Transcript
Ask a qualified installer or contractor to install this product. Do not try to install the product yourself. Improper installation can result in water or refrigerant leakage, electrical shock, fire or explosion.
Si81 - 503
Use only those parts and accessories supplied or specified by Daikin. Ask a qualified installer or contractor to install those parts and accessories. Use of unauthorized parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage, electrical shock, fire or explosion.
For any inquiries, contact your local distributor.
Service Manual / Convenience Pack
Read the User's Manual carefully before using this product. The User's Manual provides important safety instructions and warnings. Be sure to follow these instructions and warnings.
Convenience Pack Cautions on product corrosion 1. Air conditioners should not be installed in areas where corrosive gases, such as acid gas or alkaline gas, are produced. 2. If the outdoor unit is to be installed close to the sea shore, direct exposure to the sea breeze should be avoided and choose an outdoor unit with anti-corrosion treatment.
[Applied Models]
lLRYCP14DY1
Dealer Head Office: Umeda Center Bldg., 2-4-12, Nakazaki-Nishi, Kita-ku, Osaka, 530-8323 Japan
http://www.daikin.com/global/ c All rights reserved
The specifications, designs, and information in this brochure are subject to change without notice.
Printed in Singapore 03/2006 COS
Si81-503
Tokyo Office: JR Shinagawa East Bldg., 2-18-1, Konan, Minato-ku, Tokyo, 108-0075 Japan
Si81-503
Contents 1. Electrical and Functional Parts................................................................1 1.1 Layout and Functions of Functional Parts ................................................1 1.2 List of Electrical and Functional Parts ......................................................4
2. Operation Modes.....................................................................................6 2.1 2.2 2.3 2.4 2.5
Operation Zones and Operation Mode No. ..............................................6 Operation Modes and Frequency of Occurrence .....................................7 Degree of Succession of Operation Modes..............................................8 Refrigerant Flow while in Basic Mode ....................................................12 Refrigerant Flow by Mode ......................................................................16
3. Functions and Operation.......................................................................41 3.1 3.2 3.3 3.4 3.5
Flow Chart for Operation ........................................................................41 Overview of Basic Control ......................................................................42 Control of Functional Parts by Operation Mode .....................................43 Details on Each Control..........................................................................49 Control of Booster Unit (LCBKP1AR).....................................................64
4. Troubleshooting ....................................................................................66 4.1 4.2 4.3 4.4 4.5 4.6 4.7
Initial Checking at Servicing ...................................................................66 Troubleshooting by Remote Controller/LED Lamps...............................68 Flow Chart for Troubleshooting-Indoor Unit System ..............................73 Flow Chart for Troubleshooting-Outdoor Unit System ...........................88 Flow Chart for Troubleshooting-Booster Unit System ..........................138 Troubleshooting by RAM Monitor.........................................................158 Troubleshooting by ST Controller.........................................................161
5. Maintenance........................................................................................177 5.1 5.2 5.3 5.4 5.5 5.6 5.7
Procedure for Removal of Parts from Refrigerant System ...................177 Procedure for Removal-LRYCP14DY1 ................................................184 Procedure for Removal-LCBKP1AR ....................................................194 Procedure of Removal-BRR2A1R........................................................195 Procedure of Removal-BRR3A1V1R ...................................................196 Procedure of Removal-BRP5A1V1 ......................................................197 Emergency operation when compressor has poor insulation...............198
6. Common Item......................................................................................199 6.1 6.2 6.3 6.4
AirNet System ......................................................................................199 Precautions for Servicing New Refrigerant Units .................................202 Characteristics Table............................................................................204 Airtight Tests and Vacuum Drying........................................................207
7. Appendix .............................................................................................210 7.1 System Configuration ...........................................................................210 7.2 Standard Specifications........................................................................213 7.3 Wiring Diagrams...................................................................................219
8. Parts List .............................................................................................227 8.1 8.2 8.3 8.4 8.5 Table of Contents
LRYCP14DY1 ......................................................................................228 LCBKP1AR...........................................................................................235 BRR2A1R.............................................................................................237 BRR3A1V1R ........................................................................................240 BRP5A1V1 ...........................................................................................241 i
Si81-503
ii
Table of Contents
Si81-503
Electrical and Functional Parts
1. Electrical and Functional Parts 1.1
Layout and Functions of Functional Parts Outdoor Unit
15
25
34
23
36
16
12 35
14
7
13
6
10
5
9
4 11
29
17
30 19
27
33
18 20
26 8 22 32 31 42
40
41 28
3 24 39
2 21
43 1
38 3D050258
Convenience Pack
1
Electrical and Functional Parts
Si81-503
Outdoor Unit (LRYCP14DY1) No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Outdoor Unit
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
35
2
Name
Symbol
Function An inverter-driven compressor, which runs at operating frequencies in the range of 62 Hz to 210 Hz. A compressor, which runs with commercial power supply. Used for Refrigerator / Standard compressor 1 M2C Freezer air conditioning. A compressor, which runs with commercial power supply. Used mainly for air Standard compressor 2 M3C conditioning. Four way valve (Main) Y1R Used to select the passage for Cooling or Heating of air conditioner. Used to select the passage for Heat Recovery “Provided” or “Not Provided” while Four way valve (Sub) Y2R in heating operation. Used to select the passage for Refrigerator / Freezer or Air Conditioner on the Four way valve (Suction) Y3R standard compressor (M2C). While in heating operation, used to keep the suction superheated degree (SH) Electronic expansion valve (Main) Y1E constant. Used to keep the superheated degree (SH) on the Refrigerator / Freezer side Electronic expansion valve (Injection) Y2E constant. Solenoid valve 1 Y1S This valve is energized or de-energized while in (oil return) operation. Solenoid valve 2 Y2S This valve is energized or de-energized while in (oil return) operation. Solenoid valve 3 Y3S This valve is energized or de-energized while in (oil return) operation. Solenoid valve 4 Y4S This valve is energized or de-energized while in (oil return) operation. Solenoid valve 5 Y5S This valve is energized or de-energized while in (oil return) operation. Solenoid valve 6 Y6S This valve is energized or de-energized while in (oil return) operation. Solenoid valve 7 Y7S This valve opens or closes under high pressure control during heating operation. Solenoid valve 8 Y8S This valve opens or closes under high pressure control during heating operation. High pressure sensor S1NPH Use to detect a high pressure and control the outdoor unit fan. Low pressure sensor 1 S1NPL Used to detect a low pressure and control the compressor on the Refrigerator / Freezer side. Used to detect a low pressure and control the compressor on the air conditioning Low pressure sensor 2 S2NPL side. This switch is activated when a high pressure reaches the 3.25 MPa set High pressure switch S1PH pressure, thus stopping the inverter compressor (M1C). High pressure switch S2PH This switch is activated when a high pressure reaches the 3.25 MPa set pressure, thus stopping the standard compressor (M2C). This switch is activated when a high pressure reaches the 3.25 MPa set High pressure switch S3PH pressure, thus stopping the standard compressor (M3C). This switch is activated when a low pressure reaches the 0.0-MPa set pressure, Low pressure switch S1PL thus stopping the standard compressor (M2C). Outdoor air thermistor R1T Used to detect outdoor temperature and control the fan operation. Used to detect the discharge pipe temperatures of M1C and M2C compressors Discharge pipe thermistor R3-1T and control over discharge pipe temperatures of these compressors for protection. Used to detect the discharge pipe temperatures of M3C compressor and control Discharge pipe thermistor R3-2T over discharge pipe temperatures of this compressor for protection. Suction pipe thermistor R4-1T Used to detect the suction pipe temperatures of M1C and M2C compressors and protect these compressors. Used to detect the suction pipe temperatures of M3C compressor and protect Suction pipe thermistor R4-2T this compressor. Used to operate a fan on the right for heat exchange through an air heat Fan motor M1F exchanger. Fan motor M2F Used to operate a fan on the left for heat exchange through an air heat exchanger. Used to remove moisture from refrigerant. Since components of particularly low Drier — evaporation pressure may freeze moisture at the needle part of the expansion valve resulting in clogging, this drier is provided. Ball valve (Receiver on secondary — Used to service. side) Ball valve (Heat exchanger on — Used to service. primary side) Used to compensate the variations in handling of refrigerant, thus providing stable Liquid receiver — operating conditions at all times. In order to repair any part in the refrigerant circuit, this receiver collects the refrigerant and facilitates the repairing of the part. Refrigerant gas discharged from the compressor contains lubricating oil in the compressor. If the amount of this lubricating oil is large, the oil quantity in the compressor will become short, which may result in defective lubrication. Oil separator — Furthermore, this oil stains the heat transfer surface of condenser or evaporator and reduces the effectiveness of the heat exchanger. To avoid that, an oil separator is installed in close proximity to the discharge pipe of the compressor, where oil is separated and collected to return to the compressor. Inverter compressor
M1C
Convenience Pack
Si81-503
Electrical and Functional Parts
Outdoor Unit
No.
Name
Symbol
36
Fusible plug
—
38 39 40 41 42 43
Stop valve Stop valve Stop valve Service port Service port Service port
— — — — — —
Function When the refrigerant of the receiver unit reaches a temperature of 70 to 75°C, the fusible head of plug will melt, thus discharging the refrigerant of high temperature and high pressure. Used for air conditioning-side gas. Used for liquid. Used for Refrigeration gas. Used for Air conditioning-side gas (of low pressure). Used for liquid (of high pressure). Used for Refrigeration / Freezing-side gas (of low pressure).
3
1
2
63H
Booster Unit (LCBKP1AR)
Booster Unit
No.
Name
Symbol
1
Inverter compressor
M1C
2
High pressure switch
S1PH
3
Service port
Convenience Pack
—
Function Operating frequency: 168 Hz for freezer showcase of 5 feet in length/183 Hz for freezer showcase of 7 feet in length This switch is activated when a high pressure reaches the 1.8 MPa set pressure, thus stopping the inverter compressor (M1C). Used for high pressure measurement and pressurized inspection on the booster unit.
3
Electrical and Functional Parts
1.2
Si81-503
List of Electrical and Functional Parts Outdoor Unit
Item
Symbol
Type/Specification
LRYCP14DY1 Inverter compressor Compressor
Motor
Printed circuit board
M1C
Standard compressor
M2C, M3C
JT170FAKSYE@P3
Overcurrent relay (for M2C, M3C)
K2S, K3S
AC 400V CLK-20JT-P12 (OC : 13A)
Fan motor (A3P)
M1F
DC 300W 8P UGBTEF-T
Fan motor (A4P)
M2F
DC 280W 6P ECW8601BD
Main PCB
A1P
EB0558
Sub PCB
A2P
EB0560
PCB for fan driver
A3P, A4P
PC0005H
PCB for inverter
A5P
PC0503
PCB for current sensor
A6P, A7P
EC0074
Electronic expansion valve Main unit (Main)
Coil
Electronic expansion valve Main unit
Functional parts
Pressurerelated
Thermistor and the like
4
JT1FAVDKSYR@P3
Y1E Y2E
EKV-40D77 Bore : φ4.0 EKV-MOZS188B0 EKV-26D35 Bore : φ2.6
(Injection)
Coil
Solenoid valve
Main unit
Y1S, Y2S
NEV-202DXF φ1.9
(Oil return)
Coil
Y3S, Y5S
AC220-240V
Solenoid valve
Main unit
(Oil return)
Coil
Solenoid valve
Main unit
(Liquid)
Coil
Four way valve
Main unit
(Main)
Coil
Four way valve
Main unit
(Sub)
Coil
Four way valve
Main unit
(Suction)
Coil
Y4S, Y6S, Y7S Y8S Y1R Y2R Y3R
EKV-MOZS190B0
NEV-202DXF φ1.9 AC220-240V NEV-603DXF AC220-240V VT60100 AC220-240V VT40100 AC220-240V VT40100 AC220-240V +0
Pressure switch (for high pressure)
S1PH~S3PH
ACB-1TB24W OFF: 3.25 –0.1 MPa, ON : 2.5±0.15MPa
Pressure switch (for low pressure)
S1PL
LCB-92 OFF: 0±0.02 MPa, ON: 0.06±0.03 MPa
Pressure sensor (for high pressure)
S1NPH
0~3.33MPa PS8050A
Pressure sensor (for low pressure)
S1NPL~S2NPL
0~0.98MPa PS8050A
Fusible plug
—
70~75°C FPGD-3D
For radiator fin (A5P)
R1T
3.5~360kΩ 20kΩ (25°C)
For outdoor air (A1P)
R1T
3.5~360kΩ 20kΩ (25°C)
For discharge pipe
R3-1T, R3-2T
3.5~360kΩ 230kΩ (25°C)
For suction pipe
R4-1T, R4-2T
3.5~360kΩ 20kΩ (25°C)
For fuse (A1P)
F1U, F2U
250 VAC, 10A, Class B
For fuse (A2P)
F1U, F2U
250 VAC, 10A, Class B
Convenience Pack
Si81-503
Electrical and Functional Parts
Booster Unit Item
Symbol
Type/Specification
LCBKP1AR Compressor
Inverter compressor
M1C
2YC45CXD
Pressurerelated
Pressure switch (for high pressure)
S1PH
ACB-JB167 OFF: 1.8 –0.1 MPa, ON : 1.4 ± 0.15MPa
Symbol
Type/Specification
+0
Inverter Box Item
BRR2A1R Printed circuit board
Control PCB
A1P
—
Inverter PCB
A2P
—
Fan
Cooling fan motor
M1F
4715PS-20T-B20-B00
Relay
Magnetic relay (alarm)
K1R
LY2F-ACA AC200V 2C
Magnetic relay (alarm)
K2R
MY2ZF AC200V 2C
Magnetic relay (fan, solenoid valve)
K3R
LY2F-ACA AC200V 2C
Thermistor for radiator fin (A2P)
R1T
Fuse (A1P)
F1U
250 VAC, 5A, Class B
Fuse (A2P)
F200U
250 VAC, 3A, Class B
Fuse
F1U
250 VAC, 1A, Class B
Fuse (A4P)
F1U, F2U
250 VAC, 4A, Class T
Thermistor, etc.
Defrost Control Board Item
Symbol
Type/Specification
BRR3A1V1R Printed circuit board
Defrost control PCB
Relay
Magnetic relay
K4R~K7R
LY2F-ACA AC200V 2C
Magnetic relay (defrost heater)
—
CLK15J40P6 AC200V-20A MY2ZF AC200V 2C
A1P
—
Magnetic relay
—
Fuse
F1U
250 VAC, 6.3A, Class T
Fuse
F2U, F3U
250 VAC, 5A, Class B
Convenience Pack
5
Operation Modes
Si81-503
2. Operation Modes 2.1
Operation Zones and Operation Mode No.
"Operation Mode No." shown in figure below are imparted to operation zones (see figure below), which are determined according to "air conditioning loads" and "refrigerator / Freezer loads". These "Operation Mode No." are used in the description of operation modes on the following page and later, which should be put to use.
When an air conditioner is in cooling operation Refrigerator / Freezer load, high
Rerrigerator / Freezer load
24
Refrigerator / Freezer load, zero
29
8, 11, 12
30 35
6, 7
0
Air conditioning load, zero
Refrigerator / Freezer load, high
17
5
Air conditioning load
Air conditioning load, high
When an air conditioner is in heating load
Rerrigerator / Freezer load
59
Refrigerator / Freezer load, zero
74 64
52 75 80
0
Air conditioning load, zero 6
65, 70
43, 46, 47
41, 42
Air conditioning load
40 Air conditioning load, high Convenience Pack
Si81-503
2.2
Operation Modes
Operation Modes and Frequency of Occurrence
The following table shows the frequency of occurrence of each operation mode for the "Operation Mode No." imparted in the previous page. : Normally, the unit is operated in this operation mode. : Normally, these modes have low frequency of occurrence but will occur if the loads fluctuate. : Normally, these modes only occur on very rare occasion (example: if thermostat ON is requested while in standby mode and while in back-up operation).
Classification of operation modes Operating Cooling compressor only
DC INV COMP. + STD COMP.1
Cooling Cooling Cooling Refrigerating Heating = > < only only Refrigerating Refrigerating Refrigerating
8
43
29
DC INV COMP.
100% Heating Heating Heating heat > >> < recovery Refrigerating Refrigerating Refrigerating only
30
DC INV COMP. +STD COMP.1 +STD COMP.2
17
DC INV COMP. STD COMP.2
24
52
11
STD COMP.1 STD COMP.2
5
STD COMP.2
6
STD COMP.1
7
Heating surplus
64
74
65
75
70
80
59
46
12
40
47
41 35
42
DC INV COMP. : Inverter compressor STD1 COMP. : Standard compressor 1 STD2 COMP. : Standard compressor 2
Convenience Pack
7
Operation Modes
2.3
Si81-503
Degree of Succession of Operation Modes
The operation modes can be changed to Mode Nos. marked with passed through other mode and then changed.
in table below. Any other mode changes are
Change of Cooling mode → Cooling mode
Operation Mode No. after change 0
5
6
7
8
11
12
17
24
29
30
35
0 5
Operation Mode No. before change
6 7 8 11 12 17 24 29 30 35
8
Convenience Pack
Si81-503
Operation Modes
Change of Heating mode → Cooling mode
Operation Mode No. after change 0
5
6
7
8
11
12
17
24
29
30
35
40 41 42
Operation Mode No. before change
43 46 47 52 59 64 65 70 74 75 80
Convenience Pack
9
Operation Modes
Si81-503
Change of Cooling mode → Heating mode
Operation Mode No. after change 40
41
42
43
46
47
52 59
64
65
70
74
75
80
0 5
Operation Mode No. before change
6 7 8 11 12 17 24 29 30 35
10
Convenience Pack
Si81-503
Operation Modes
Change of Heating mode → Heating mode
Operation Mode No. after change 40
41
42
43
46
47
52 59
64
65
70
74
75
80
40 41 42
Operation Mode No. before change
43 46 47 52 59 64 65 70 74 75 80
Convenience Pack
11
12
Refrigerator showcase
Air conditioner
Low temperature gas
Low temperature liquid
Overview of Convenience Pack ZEAS-AC Piping Diagram
Booster unit
Freezer showcase
Air conditioner
High temperature liquid Freezing gas
DC INV
STD2
Outdoor unit
STD1
Priority of startup of compressors Refrigerator / Freezer side : Inverter compressor (DC INV) ‚ Standard compressor 1 (STD1) Air conditioner side : Standard compressor 1 (STD1) ‚ Standard compressor 2 (STD2)
2.4
High temperature gas
In cooling operation:
Operation Modes Si81-503
In cooling operation
Refrigerant Flow while in Basic Mode
Convenience Pack
Convenience Pack
Booster unit
Freezer showcase
Air conditioner
High temperature gas
In heating operation: (Between seasons)
High temperature liquid
Refrigerator showcase
Air conditioner
Low temperature gas
Low temperature liquid Freezing gas
DC INV
STD2
Outdoor unit
STD1
Priority of startup of compressors Refrigerator / Freezer side : Inverter compressor (DC INV) ‚ Standard compressor 1 (STD1) Air conditioner side : Inverter compressor (DC INV) ‚ Standard compressor 1 (STD1) Standard compressor 2 (STD2) is not used.
Si81-503 Operation Modes
In heating operation (between seasons)
13
14
Booster unit
Freezer showcase
Air conditioner
High temperature gas
Air conditioner
Low temperature gas
Refrigerator showcase
High temperature liquid
In heating operation: (Between-seasons to winter season) Low temperature gas Freezing gas
DC INV
STD2
Outdoor unit
STD1
Priority of startup of compressors Refrigerator / Freezer side : Inverter compressor (DC INV) ‚ Standard compressor 1 (STD1) Air conditioner side : Inverter compressor (DC INV) ‚ Standard compressor 1 (STD1) Standard compressor 2 (STD2) is not used.
Operation Modes Si81-503
In heating operation (Between-seasons to winter season)
Convenience Pack
Convenience Pack
Booster unit
Freezer showcase
Air conditioner
High temperature gas
In heating operation: (Winter season)
Air conditioner
Low temperature gas
Refrigerator showcase
High temperature liquid
Low temperature liquid Freezing gas
DC INV
STD2
Outdoor unit
STD1
Priority of startup of compressors Refrigerator / Freezer side : Inverter compressor (DC INV) ‚ Standard compressor 1 (STD1) Air conditioner side : Standard compressor 1 (STD1) ‚ Standard compressor 2 (STD2)
Si81-503 Operation Modes
In heating operation (Winter season)
15
16
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Stopping compressor
Flare connection
SV Solenoid valve
Outdoor unit
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Y1R
Cooling Mode 5
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
: High load (in midsummer and others)
Y1R (4-way valve A) OFF Y1S (SV1) Oil return control Y2R (4-way valve B) OFF Y2S (SV2) Oil return control Y3R (4-way valve C) ON Y3S (SV3) OFF Y4S (SV4) Oil return control Y5S (SV5) OFF Y6S (SV0) OFF Y7S (SV9) OFF Y2R Y8S (SV10) OFF Y1E (EV1) OFF Y2E (EV2) OFF
2.5
Oil separator
: High pressure
Air conditioner side
Refrigerator / Freezer side : All thermostats OFF (in defrost operation)
Operation Modes Si81-503
Refrigerant Flow by Mode
Convenience Pack
Convenience Pack
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Stopping compressor
Flare connection
SV Solenoid valve
Outdoor unit
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Cooling Mode 6
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
Oil separator
: High pressure
Remarks
Air conditioner side
Y1R (4-way valve A) OFF Y1S (SV1) OFF Y2R (4-way valve B) OFF Y2S (SV2) Oil return control : STD1 compressor in a standby or malfunction state Y3R (4-way valve C) OFF Y3S (SV3) OFF Y4S (SV4) Oil return control : STD2 in operation as a backup for STD1 Y5S (SV5) OFF Y6S (SV0) OFF Y7S (SV9) OFF Y2R Y8S (SV10) OFF Y1E (EV1) OFF Y1R Y2E (EV2) OFF
Refrigerator / Freezer side : All thermostats OFF (in defrost operation)
Si81-503 Operation Modes
17
18
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Stopping compressor
Flare connection
SV Solenoid valve
Outdoor unit
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Y1R
: Low load (between-season and others)
Y1R (4-way valve A) OFF Y1S (SV1) Oil return control Y2R (4-way valve B) OFF Y2S (SV2) OFF Y3R (4-way valve C) ON Y3S (SV3) OFF Y4S (SV4) Oil return control Y5S (SV5) OFF Y6S (SV0) OFF Y7S (SV9) OFF Y2R Y8S (SV10) OFF Y1E (EV1) OFF Y2E (EV2) OFF
Cooling Mode 7
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
Oil separator
: High pressure
Air conditioner side
Refrigerator / Freezer side : All thermostats OFF (in defrost operation)
Operation Modes Si81-503
Convenience Pack
Convenience Pack
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Stopping compressor
Flare connection
SV Solenoid valve
Outdoor unit
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Y1R (4-way valve A) OFF Y1S (SV1) Oil return control Y2R (4-way valve B) OFF Y2S (SV2) OFF Y3R (4-way valve C) ON Y3S (SV3) Oil return control Y4S (SV4) OFF : Modes with high frequency of occurrence between seasons, Y5S (SV5) Oil return control Outdoor unit's heat exchanger for heating in defrosting operation Y6S (SV0) Oil return control Y7S (SV9) OFF Y2R Y8S (SV10) OFF Y1E (EV1) OFF Y1R Y2E (EV2) ON
: Low load (between-seasons, and others)
Cooling Mode 8
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
Oil separator
: High pressure
Remarks
Air conditioner side
Refrigerator / Freezer side : Low load (in thermostat ON-OFF operation)
Si81-503 Operation Modes
19
20
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Stopping compressor
Flare connection
SV Solenoid valve
Outdoor unit
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Cooling Mode 11
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
Oil separator
: High pressure
Remarks
Air conditioner side
Y1R (4-way valve A) OFF Y1S (SV1) OFF Y2R (4-way valve B) OFF Y2S (SV2) Oil return control : STD1 compressor in a standby or malfunction state Y3R (4-way valve C) OFF Y3S (SV3) Oil return control Y4S (SV4) Oil return control : STD2 in operation as a backup for STD1, Y5S (SV5) Oil return control Outdoor unit's heat exchanger for heating in defrosting operation Y6S (SV0) Oil return control Y7S (SV9) OFF Y2R Y8S (SV10) OFF Y1E (EV1) OFF Y1R Y2E (EV2) ON
Refrigerator / Freezer side : Low load (in thermostat ON-OFF operation)
Operation Modes Si81-503
Convenience Pack
Convenience Pack
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Stopping compressor
Flare connection
SV Solenoid valve
Outdoor unit
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Cooling Mode 12
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
Oil separator
: High pressure
Remarks
Air conditioner side
Y1R (4-way valve A) OFF Y1S (SV1) Oil return control Y2R (4-way valve B) OFF Y2S (SV2) Oil return control : Low load (between-seasons and others) Y3R (4-way valve C) OFF Y3S (SV3) Oil return control Y4S (SV4) OFF : STD1 in operation as a backup for INV compressor Y5S (SV5) OFF Y6S (SV0) Oil return control Y7S (SV9) OFF Y2R Y8S (SV10) OFF Y1R Y1E (EV1) OFF Y2E (EV2) ON
Refrigerator / Freezer side : INV compressor in malfunction sate (in retry standby mode)
Si81-503 Operation Modes
21
22
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Stopping compressor
Flare connection
SV Solenoid valve
Outdoor unit
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Cooling Mode 17
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
Oil separator
: High pressure
Remarks
Air conditioner side
Y1R (4-way valve A) OFF Y1S (SV1) Oil return control Y2R (4-way valve B) OFF Y2S (SV2) Oil return control : High load (in midsummer and others) Y3R (4-way valve C) ON Y3S (SV3) Oil return control Y4S (SV4) Oil return control : Modes with high frequency of occurrence in summer season Y5S (SV5) OFF Y6S (SV0) Oil return control Y7S (SV9) OFF Y2R Y8S (SV10) OFF Y1E (EV1) OFF Y1R Y2E (EV2) ON
Refrigerator / Freezer side : Low load to High load (in thermostat ON-OFF operation)
Operation Modes Si81-503
Convenience Pack
Convenience Pack
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Stopping compressor
Flare connection
SV Solenoid valve
Outdoor unit
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Cooling Mode 24
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
Oil separator
: High pressure
Remarks
Air conditioner side
Y1R (4-way valve A) OFF Y1S (SV1) OFF Y2R (4-way valve B) OFF Y2S (SV2) Oil return control : Low load to High load (between-seasons and others) Y3R (4-way valve C) OFF Y3S (SV3) Oil return control Y4S (SV4) OFF : Modes with high frequency of occurrence in summer season Y5S (SV5) Oil return control Y6S (SV0) Oil return control Y2R Y7S (SV9) OFF Y8S (SV10) OFF Y1R Y1E (EV1) OFF Y2E (EV2) ON
Refrigerator / Freezer side : High load (Pull down after defrost operation, and others)
Si81-503 Operation Modes
23
24
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
STD 1
LPS
HPS
Service port on stop valve
Thermostatic expansion valve
Check valve with spring
S
S
Y3R
HPS
Y1E
Stopping compressor
Flare connection
SV Solenoid valve
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS
Outdoor unit
Y1R (4-way valve A) OFF Y1S (SV1) OFF Y2R (4-way valve B) OFF Y2S (SV2) OFF Y3R (4-way valve C) OFF Y3S (SV3) Oil return control Y4S (SV4) OFF Y5S (SV5) Oil return control Y6S (SV0) Oil return control Y2R Y7S (SV9) OFF Y8S (SV10) OFF Y1E (EV1) OFF Y2E (EV2) ON
Cooling Mode 29
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
INV
DC
G
Y1R
: Modes with high frequency of occurrence
Remarks
Heat pump indoor unit
: Low pressure
Oil separator
: High pressure
: Thermostat OFF, Remote controller OFF
Air conditioner side
Refrigerator / Freezer side : High load (Pull down, and others)
Operation Modes Si81-503
Convenience Pack
Convenience Pack
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Stopping compressor
Flare connection
SV Solenoid valve
Outdoor unit
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Cooling Mode 30
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
Oil separator
: High pressure
Remarks
Air conditioner side
Y1R (4-way valve A) OFF Y1S (SV1) OFF Y2R (4-way valve B) OFF Y2S (SV2) Oil return control : Thermostat OFF, Remote controller OFF Y3R (4-way valve C) OFF Y3S (SV3) Oil return control Y4S (SV4) OFF : Modes with high frequency of occurrence Y5S (SV5) Oil return control Outdoor unit's heat exchanger for heating in defrosting operation Y6S (SV0) Oil return control Y7S (SV9) OFF Y2R Y8S (SV10) OFF Y1E (EV1) OFF Y1R Y2E (EV2) ON
Refrigerator / Freezer side : Low load (in thermostat ON-OFF operation)
Si81-503 Operation Modes
25
26
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Stopping compressor
Flare connection
SV Solenoid valve
Outdoor unit
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Cooling Mode 35
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
Oil separator
: High pressure
Remarks
Air conditioner side
Y1R (4-way valve A) OFF Y1S (SV1) Oil return control Y2R (4-way valve B) OFF Y2S (SV2) OFF : Thermostat OFF, Remote controller OFF Y3R (4-way valve C) OFF Y3S (SV3) Oil return control Y4S (SV4) OFF : STD1 in operation as a backup for INV compressor Y5S (SV5) OFF Y6S (SV0) Oil return control Y7S (SV9) OFF Y2R Y8S (SV10) OFF Y1R Y1E (EV1) OFF Y2E (EV2) ON
Refrigerator / Freezer side : INV compressor in malfunction sate
Operation Modes Si81-503
Convenience Pack
Convenience Pack
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Stopping compressor
Flare connection
SV Solenoid valve
Outdoor unit
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Y1R
Y1R (4-way valve A) ON Y1S (SV1) Oil return control Y2R (4-way valve B) OFF Y2S (SV2) Oil return control Y3R (4-way valve C) ON Y3S (SV3) OFF Y4S (SV4) Oil return control Y5S (SV5) OFF Y6S (SV0) OFF Y7S (SV9) OFF Y2R Y8S (SV10) ON Y1E (EV1) ON Y2E (EV2) OFF
Heating Mode 40
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
: Heat exchanger of outdoor unit becomes evaporator
Remarks
Oil separator
: High pressure
: High load (between-seasons and others)
Air conditioner side
Refrigerator / Freezer side : All thermostats OFF (in defrost operation)
Si81-503 Operation Modes
27
28
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Stopping compressor
Flare connection
SV Solenoid valve
Outdoor unit
Y1S (SV1) OFF Y2S (SV2) Oil return control Y3S (SV3) OFF Y4S (SV4) Oil return control Y5S (SV5) OFF Y6S (SV0) OFF Y7S (SV9) OFF Y8S (SV10) ON Y1E (EV1) ON Y2E (EV2) OFF
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Y1R
Y2R
Y1R (4-way valve A) ON Y2R (4-way valve B) OFF Y3R (4-way valve C) OFF
Heating Mode 41
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
Oil separator
: High pressure
Refrigerator / Freezer side : All thermostats OFF (in defrost operation) Air conditioner side : STD1 compressor in a standby or malfunction state Remarks : Heat exchanger of outdoor unit becomes evaporator STD2 in operation as a backup for STD1
Operation Modes Si81-503
Convenience Pack
Convenience Pack
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Outdoor unit
Stopping compressor
Flare connection
SV Solenoid valve
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Y1R
Y1R (4-way valve A) ON Y1S (SV1) Oil return control Y2R (4-way valve B) OFF Y2S (SV2) OFF Y3R (4-way valve C) ON Y3S (SV3) OFF Y4S (SV4) Oil return control Y5S (SV5) OFF Y6S (SV0) OFF Y7S (SV9) OFF Y2R Y8S (SV10) ON Y1E (EV1) ON Y2E (EV2) OFF
Heating Mode 42
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
Remarks
Oil separator
: High pressure
: Low load (between-seasons and others) : Heat exchanger of outdoor unit becomes evaporator
Air conditioner side
Refrigerator / Freezer side : All thermostats OFF (in defrost operation)
Si81-503 Operation Modes
29
30
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Stopping compressor
Flare connection
SV Solenoid valve
Outdoor unit
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Y1R
Y1R (4-way valve A) ON Y1S (SV1) Oil return control Y2R (4-way valve B) OFF Y2S (SV2) OFF Y3R (4-way valve C) ON Y3S (SV3) Oil return control Y4S (SV4) OFF Y5S (SV5) Oil return control Y6S (SV0) Oil return control Y7S (SV9) OFF Y2R Y8S (SV10) ON Y1E (EV1) ON Y2E (EV2) ON
Heating Mode 43
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
Oil separator
: High pressure
Refrigerator / Freezer side : Low load (thermostat in ON-OFF operation) Air conditioner side : High load (between-seasons and others) Remarks : Heat exchanger of outdoor unit becomes evaporator Heating load>Refrigerating load, Modes with high frequency of occurrence
Operation Modes Si81-503
Convenience Pack
Convenience Pack
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Stopping compressor
Flare connection
SV Solenoid valve
Outdoor unit
Y1S (SV1) OFF Y2S (SV2) Oil return control Y3S (SV3) Oil return control Y4S (SV4) Oil return control Y5S (SV5) Oil return control Y6S (SV0) Oil return operation Y7S (SV9) OFF Y8S (SV10) ON Y1E (EV1) ON Y2E (EV2) ON
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Y1R
Y2R
Y1R (4-way valve A) ON Y2R (4-way valve B) OFF Y3R (4-way valve C) OFF
Heating Mode 46
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
Oil separator
: High pressure
Refrigerator / Freezer side : Low load (thermostat in ON-OFF operation) Air conditioner side : STD1 compressor in a standby or malfunction state Remarks : Heat exchanger of outdoor unit becomes evaporator, Heating load>Refrigerating load, STD2 in operation as a backup for STD1
Si81-503 Operation Modes
31
32
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Stopping compressor
Flare connection
SV Solenoid valve
Outdoor unit
Y1S (SV1) Oil return control Y2S (SV2) Oil return control Y3S (SV3) Oil return control Y4S (SV4) OFF Y5S (SV5) OFF Y6S (SV0) Oil return control Y7S (SV9) OFF Y8S (SV10) ON Y1E (EV1) ON Y2E (EV2) ON
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Y1R
Y2R
Y1R (4-way valve A) ON Y2R (4-way valve B) OFF Y3R (4-way valve C) OFF
Heating Mode 47
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
Oil separator
: High pressure
Refrigerator / Freezer side : INV compressor in malfunction state Air conditioner side : High load (winter and others) Remarks : Heat exchanger of outdoor unit becomes evaporator Heating load>Refrigerating load, STD1 in operation as a backup for INV compressor
Operation Modes Si81-503
Convenience Pack
Convenience Pack
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Y1S (SV1) Oil return control Y2S (SV2) Oil return control Y3S (SV3) Oil return control Y4S (SV4) Oil return control Y5S (SV5) OFF Y6S (SV0) Oil return control Y7S (SV9) OFF Y8S (SV10) ON Y1E (EV1) ON Y2E (EV2) ON
Stopping compressor
Flare connection
SV Solenoid valve
Outdoor unit
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Y1R
Y2R
Y1R (4-way valve A) ON Y2R (4-way valve B) OFF Y3R (4-way valve C) ON
Heating Mode 52
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
Oil separator
: High pressure
Refrigerator / Freezer side : Low load (thermostat in ON-OFF operation) Air conditioner side : High load (in midwinter and others) Remarks : Heat exchanger of outdoor unit becomes evaporator Heating load>Refrigerating load, Modes with high frequency of occurrence
Si81-503 Operation Modes
33
34
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Stopping compressor
Flare connection
SV Solenoid valve
Outdoor unit
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Y1R
Y1R (4-way valve A) ON Y1S (SV1) OFF Y2R (4-way valve B) OFF Y2S (SV2) Oil return control Y3R (4-way valve C) OFF Y3S (SV3) Oil return control Y4S (SV4) OFF Y5S (SV5) Oil return control Y6S (SV0) Oil return control Y7S (SV9) OFF Y2R Y8S (SV10) ON Y1E (EV1) ON Y2E (EV2) ON
Heating Mode 59
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
Oil separator
: High pressure
Refrigerator / Freezer side : High load (pull down after defrost operation and others) Air conditioner side : High load (in midwinter and others) Remarks : Heat exchanger of outdoor unit becomes evaporater, Heating load>Refrigerating load, Modes with high frequency of occurrence
Operation Modes Si81-503
Convenience Pack
Convenience Pack
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Stopping compressor
Flare connection
SV Solenoid valve
Outdoor unit
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Y1R
Y1R (4-way valve A) ON Y1S (SV1) OFF Y2R (4-way valve B) OFF Y2S (SV2) OFF Y3R (4-way valve C) OFF Y3S (SV3) Oil return control Y4S (SV4) OFF Y5S (SV5) Oil return control Y6S (SV0) Oil return control Y7S (SV9) High pressure control Y8S (SV10) High pressure control Y2R Y1E (EV1) OFF Y2E (EV2) ON
Heating Mode 64
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
Oil separator
: High pressure
Refrigerator / Freezer side : High load (pull down and others) Air conditioner side : High load (in midwinter and others) Remarks : Heat exchange for outdoor unit is not used, Heating load=Refrigerating load, Modes with high frequency of occurrence
Si81-503 Operation Modes
35
36
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Stopping compressor
Flare connection
SV Solenoid valve
Outdoor unit
Y1S (SV1) OFF Y2S (SV2) Oil return control Y3S (SV3) Oil return control Y4S (SV4) OFF Y5S (SV5) Oil return control Y6S (SV0) Oil return control Y7S (SV9) High pressure control Y8S (SV10) High pressure control Y1E (EV1) OFF Y2E (EV2) ON
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Y1R
Y2R
Y1R (4-way valve A) ON Y2R (4-way valve B) OFF Y3R (4-way valve C) OFF
Heating Mode 65
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
Oil separator
: High pressure
Refrigerator / Freezer side : Low load (thermostat in ON-OFF operation) Air conditioner side : Low load (between-seasons and others) Remarks : Heat exchange for outdoor unit is not used, Heating load=Refrigerating load, Modes with high frequency of occurrence
Operation Modes Si81-503
Convenience Pack
Convenience Pack
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Stopping compressor
Flare connection
SV Solenoid valve
Outdoor unit
Y1S (SV1) Oil return control Y2S (SV2) OFF Y3S (SV3) Oil return control Y4S (SV4) OFF Y5S (SV5) OFF Y6S (SV0) Oil return control Y7S (SV9) High pressure control Y8S (SV10) High pressure control Y1E (EV1) OFF Y2E (EV2) ON
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Y1R
Y2R
Y1R (4-way valve A) ON Y2R (4-way valve B) OFF Y3R (4-way valve C) OFF
Heating Mode 70
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
Oil separator
: High pressure
Refrigerator / Freezer side : INV compressor in malfunction state Air conditioner side : Low load (between-seasons and others) Remarks : Heat exchange for outdoor unit is not used, Heating load=Refrigerating load STD1 in operation as a backup for INV compressor
Si81-503 Operation Modes
37
38
C
G
Thermistor
Refrigerant filter
Sight glass
C
Service port (Gauge joint with check valve)
Electronic expansion valve
Drier/Filter
DC INV
HPS
G
Y2E SV
Y3R
HPS
STD 1
LPS
Service port on stop valve
Thermostatic expansion valve
Y1E
Stopping compressor
Flare connection
SV Solenoid valve
Outdoor unit
Y1S (SV1) OFF Y2S (SV2) OFF Y3S (SV3) Oil return control Y4S (SV4) OFF Y5S (SV5) Oil return control Y6S (SV0) Oil return control Y7S (SV9) OFF Y8S (SV10) OFF Y1E (EV1) OFF Y2E (EV2) ON
Operating compressor
Capillary tube
Check valve
C
STD 2
HPS HPS
Check valve with spring
S
S
INV
DC
G
Y1R
Y2R
Y1R (4-way valve A) ON Y2R (4-way valve B) ON Y3R (4-way valve C) OFF
Heating Mode 74
Service port (Charging hose joint)
Pressure sensor
Booster unit
Freezer
SV
Refrigerator
SV
Heat pump indoor unit
: Low pressure
Oil separator
: High pressure
Refrigerator / Freezer side : High load (pull down after defrost operation and others) Air conditioner side : Low load (between-seasons and others), Thermostat OFF, Remote controller OFF Remarks : Heat exchanger of outdoor unit becomes condenser, Heating load, and <" represents the comparison of quantities of operating compressors.
Convenience Pack
43
Functions and Operation
Si81-503
Cooling Mode Cooling > Refrigerating 17
Cooling < Refrigerating 24
29
30
35
ON
ON
ON
—
Refrigeration —
ON
ON
—
ON
Air conditioning ON
—
—
—
—
I/O M1C (Compressor Refrigeration) M2C (Compressor)
Outdoor unit
ON
Refrigerating only
M3C (Compressor Air conditioning)
ON
ON
—
—
—
Y1R (4-way valve, main)
OFF
OFF
OFF
OFF
OFF
Y2R (4-way valve, sub)
OFF
OFF
OFF
OFF
OFF
Y3R (4-way valve, suction)
ON
OFF
OFF
OFF
OFF
Y1S(SV1)
Oil return control
OFF
OFF
OFF
Oil return control
Y2S(SV2)
Oil return control
Oil return control
OFF
Oil return control
OFF
Y3S(SV3)
Oil return control
Oil return control
Oil return control
Oil return control
Oil return control
Y4S(SV4)
Oil return control
OFF
OFF
OFF
OFF
Y5S(SV5)
OFF
Oil return control
Oil return control
Oil return control
OFF
Y6S(SV0)
Oil return control
Oil return control
Oil return control
Oil return control
Oil return control
Y7S(SV9)
OFF
OFF
OFF
OFF
OFF
Y8S(SV10)
OFF
OFF
OFF
OFF
OFF
Y1E(EV1)
OFF
OFF
OFF
OFF
OFF
Y2E(EV2)
SH1 control Td1 control
SH1 control Td1 control
SH1 control Td1 control
SH1 control Td1 control
SH1 control Td1 control
Outdoor unit fan (M1F, M2F)
High pressure control
High pressure control
High pressure control
High pressure control
High pressure control
Indoor unit EV
Indoor unit SH control, Td2 control
Indoor unit SH control, Td2 control
OFF
OFF
OFF
Indoor unit fan
Not determined
Not determined
Not determined
Not determined
Not determined
Indoor unit
"Refrigerating" includes freezing. "=, >, and <" represents the comparison of quantities of operating compressors.
44
Convenience Pack
Si81-503
Functions and Operation
3.3.2 Heating Mode Heating Mode
Heating > Refrigerating
41
42
43
46
47
—
—
—
ON
ON
—
Refrigeration —
—
—
—
—
ON
Air conditioning ON
—
ON
ON
—
—
I/O M1C (Compressor Refrigeration) M2C (Compressor)
Heating only 40
M3C (Compressor Air conditioning)
ON
ON
—
—
ON
ON
Y1R (4-way valve, main)
ON
ON
ON
ON
ON
ON
Y2R (4-way valve, sub)
OFF
OFF
OFF
OFF
OFF
OFF
Y3R (4-way valve, suction)
ON
OFF
ON
ON
OFF
OFF
Y1S (SV1)
Oil return control
OFF
Oil return control
Oil return control
OFF
Oil return control
Y2S (SV2)
Oil return control
Oil return control
OFF
OFF
Oil return control
Oil return control
Y3S (SV3)
OFF
OFF
OFF
Oil return control
Oil return control
Oil return control
Y4S (SV4)
Oil return control
Oil return control
Oil return control
OFF
Oil return control
OFF
Y5S (SV5)
OFF
OFF
OFF
Oil return control
Oil return control
OFF
Y6S (SV0)
OFF
OFF
OFF
Oil return control
Oil return control
Oil return control
Y7S(SV9)
OFF
OFF
OFF
OFF
OFF
OFF
Y8S(SV10)
ON
ON
ON
ON
ON
ON
Y1E (EV1)
SH2 control Td1, Td2 control
SH2 control Td2 control
SH2 control Td1 control
SH2 control Td1 control
SH2 control Td2 control
SH2 control Td2 control
Y2E (EV2)
OFF
OFF
OFF
SH1 control Td1 control
SH1 control Td1 control
SH1 control Td1 control
Outdoor unit fan (M1F, M2F)
High pressure control
High pressure control
High pressure control
High pressure control
High pressure control
High pressure control
Indoor unit EV
Indoor unit SC control
Indoor unit SC control
Indoor unit SC control
Indoor unit SC control
Indoor unit SC control
Indoor unit SC control
Indoor unit fan
Not determined High pressure control
Not determined High pressure control
Not determined High pressure control
Not determined High pressure control
Not determined High pressure control
Not determined High pressure control
Outdoor unit
Indoor unit
"Refrigerating" includes freezing. "=, >, and <" represents the comparison of quantities of operating compressors.
Convenience Pack
45
Functions and Operation
Si81-503
Heating Mode I/O M1C (Compressor Refrigeration) M2C (Compressor)
Outdoor unit
Heating >> Refrigerating
Heating < Refrigerating
52
59
ON
ON
Refrigeration —
ON
Air conditioning ON
—
M3C (Compressor Air conditioning)
ON
ON
Y1R (4-way valve, main)
ON
ON
Y2R (4-way valve, sub)
OFF
OFF
Y3R (4-way valve, suction)
ON
OFF
Y1S (SV1)
Oil return control
OFF
Y2S (SV2)
Oil return control
Oil return control
Y3S (SV3)
Oil return control
Oil return control
Y4S (SV4)
Oil return control
OFF
Y5S (SV5)
OFF
Oil return control
Y6S (SV0)
Oil return control
Oil return control
Y7S (SV9)
OFF
OFF
Y8S (SV10)
ON
ON
Y1E (EV1)
SH2 control Td2 control
SH2 control Td2 control
Y2E (EV2)
SH1 control or Td1 control
SH1 control or Td1 control
Outdoor unit fan (M1F, M2F)
High pressure control
High pressure control
Indoor unit EV
Indoor unit SC control
Indoor unit SC control
Indoor unit fan
Not determined High pressure control
Not determined High pressure control
Indoor unit
"Refrigerating" includes freezing. "=, >, and <" represents the comparison of quantities of operating compressors.
46
Convenience Pack
Si81-503
Functions and Operation
3.3.3 Heating (Heat Recovery) Mode Heating (Heat Recovery) Mode
100% Heat recovery only
Heating surplus
64
65
70
74
75
80
ON
ON
—
ON
ON
—
—
ON
ON
—
ON
Heat recovery
Heat recovery
Heat recovery
Heat recovery
Heat recovery
Heat recovery
Y1R (4-way valve, main)
ON
ON
ON
ON
ON
ON
Y2R (4-way valve, sub)
OFF
OFF
OFF
ON
ON
ON
Y3R (4-way valve, suction)
OFF
OFF
OFF
OFF
OFF
OFF
Y1S (SV1)
OFF
OFF
Oil return control
OFF
OFF
Oil return control
Y2S (SV2)
OFF
Oil return control
OFF
OFF
Oil return control
OFF
Y3S (SV3)
Oil return control
Oil return control
Oil return control
Oil return control
Oil return control
Oil return control
Y4S (SV4)
OFF
OFF
OFF
OFF
OFF
OFF
Y5S (SV5)
Oil return control
Oil return control
OFF
Oil return control
Oil return control
OFF
Y6S (SV0)
Oil return control
Oil return control
Oil return control
Oil return control
Oil return control
Oil return control
Y7S (SV9)
High pressure High pressure High pressure OFF control control control
OFF
OFF
Y8S (SV10)
High pressure High pressure High pressure OFF control control control
OFF
OFF
Y1E (EV1)
OFF
OFF
OFF
OFF
OFF
OFF
Y2E (EV2)
SH1 control Td1 control
SH1 control Td1 control
SH1 control Td1 control
SH1 control Td1 control
SH1 control Td1 control
SH1 control Td1 control
Outdoor unit fan (M1F, M2F)
Fin control of Fin control of High DC DC pressure compressor compressor control
High pressure control
High pressure control
High pressure control
Indoor unit EV
Indoor unit SC control
Indoor unit SC control
Indoor unit SC control
Indoor unit SC control
Indoor unit SC control
Indoor unit SC control
Indoor unit fan
Capacity control High pressure control
Capacity control High pressure control
Capacity control High pressure control
Not determined
Not determined
Not determined
I/O M1C (Compressor Refrigeration)
Refrigeration ON M2C (Compressor)
Air conditioning
M3C (Compressor Air conditioning)
Outdoor unit
Indoor unit
"Refrigerating" includes freezing.
Convenience Pack
47
Functions and Operation
Si81-503
Mode
All stop 0
I/O M1C (Compressor Refrigeration)
—
Refrigeration — M2C (Compressor)
Outdoor unit
Air conditioning —
M3C (Compressor Air conditioning)
—
Y1R (4-way valve, main)
Conditions before stop
Y2R (4-way valve, sub)
Conditions before stop
Y3R (4-way valve, suction)
OFF
Y1S (SV1)
OFF
Y2S (SV2)
OFF
Y3S (SV3)
OFF
Y4S (SV4)
OFF
Y5S (SV5)
OFF
Y6S (SV0)
OFF
Y7S (SV9)
OFF
Y8S (SV10)
OFF
Y1E (EV1)
OFF
Y2E (EV2)
OFF
Outdoor unit fan (M1F, M2F)
Residual control OFF
Indoor unit EV
Not determined
Indoor unit fan
Not determined
Indoor unit
48
Convenience Pack
Si81-503
3.4
Functions and Operation
Details on Each Control
3.4.1 Stop due to Malfunction To protect compressors, if any of the following items exceeds the criterion, thermostat concerned will turn OFF. If the number of cumulative thermostat OFF times exceed the number of retry times, the system will make a stop due to malfunction. Number of retry times
No.
Item
Malfunction code
1
STD compressor overcurrent
E0
Overcurrent relay
13A
2
2
Abnormal high pressure level
E3
High pressure switch
3.25MPa or more
0
3
Abnormal low pressure level on refrigeration side
E4
Low pressure sensor LP1
4
Abnormal low pressure level on air conditioning side
E4
Low pressure sensor LP2
5
Abnormal low pressure level on STD compressor 1
E4
Low pressure switch
6
Lock of INV compressor
E5
7
Malfunction of electronic expansion valve
8
Malfunction of freezer
Detector
Criteria
LP1< 0.03MPa continues for 1 consecutive second. LP2< 0.03MPa continues for 2 consecutive seconds. LP2< 0.05MPa continues for 10 consecutive seconds. · STD compressor 1 = ON · LP1' [*2] & < 0MPa continues for 10 consecutive second.
Remarks Operating the compressor for 10 consecutive minutes or more clears the number of retry times.
10
Operating the compressor for 2 consecutive minutes or more clears the number of retry times.
10
Operating the compressor for 1 consecutive minute or more clears the number of retry times.
0
*2: LP1' represents the low pressure of STD compressor 1.
INV PC board
4
Operating the compressor for 10 cumulative minutes or more clears the number of retry times.
E9
Main PC board
0
EJ
Main PC board A - C contact
ON between A and C
Infinite Automatic reset
135°C or more 9
Discharge pipe temperature
F3
Discharge pipe thermistor
120°C or more × 15 seconds
14
Operating the compressor for 10 cumulative minutes or more reduces the number of retry times in decrements of 1.
115°C or more × 90 seconds When 3 or more sensors among the sensors shown left malfunction: (Even if 2 sensors malfunction, the compressor will keep running.)
0
—
—
of 10 Malfunctions three sensors
H0
Outdoor air thermistor Suction pipe thermistor Discharge pipe thermistor High pressure sensor Low pressure sensor
11 Disconnection of HPS
H3
Main PC board Sub PC board
Actuation of HPS
0
Main PC board
· STD compressor 1 & = OFF · Actuation of LPS
0
of 12 Disconnection LPS
Convenience Pack
H4
49
Functions and Operation
No.
Item
Si81-503
Malfunction code
Detector
Criteria
Number of retry times
Inverter fin 13 temperature rise
L4
INV PC board
94°C
9
Instantaneous 14 overcurrent of INV compressor
L5
INV PC board
36A
3
of 15 Overcurrent INV compressor
L8
INV PC board
16.5A × 5 seconds or 13A × 260 seconds*
9
startup of 16 Faulty INV compressor
L9
INV PC board
Malfunction of L5, L8 or else at startup.
14
LC
INV PC board
—
P1
INV PC board
± 10V between L1-L2, L2-L3, and L3-L1
of fin 19 Malfunction thermistor
P4
INV PC board
—
20 Reverse phase
U1
Main PC board
—
0
Abnormal 21 voltage level of INV compressor
U2
INV PC board
380 VDC
9
22 High pressure
—
High pressure sensor
2.94MPa or more
9
Malfunction of transmission 17 between control PC board and INV PC board Imbalance of 18 INV compressor voltage
Remarks Operating the compressor for 1 cumulative minute or more reduces the number of retry times in decrements of 1. Operating the compressor for 10 cumulative minutes or more clears the number of retry times. Operating the compressor for 1 cumulative minute or more reduces the number of retry times in decrements of 1. Operating the compressor for 1cumulative minute or more clears the number of retry times.
Continuing for 15 seconds or more: Retry for 1 minute or more gives an Infinite Continuing alarm. Then, the system is automatically reset. 9
Operating the compressor for 10 cumulative minutes clears the number of retry times.
Infinite Automatic reset
Operating the compressor for 10 cumulative minutes clears the number of retry times. Operating the compressor for 1 cumulative minute or more reduces the number of retry times in decrements of 1.
*Used as a backup when a PC board gets faulty.
50
Convenience Pack
Si81-503
Functions and Operation
3.4.2 Restart Standby In order to prevent the frequent ON/OFF operations of compressor, once the compressor has stopped running, it will not restart for a set period of time. Stop condition
Stop with forced thermostat OFF (Restart standby)
Stop time
INV compressor: 1 minute at minimum, 6 minutes at maximum STD compressor: 1 minutes at minimum, 30 minutes at maximum
Resetting method
Automatic resetting
3.4.3 Startup Control Judgment of thermostat ON/OFF [Refrigerator/Freezer thermostat ON conditions]
&
[Air conditioner thermostat ON conditions] Thermostat ON demand from indoor unit was received.
· LP1 > 0.245MPa Outdoor temperature Ta < –5˚C OR & 5 minutes elapsed after the refrigerator/ [Air conditioner thermostat OFF conditions] Freezer side compressor stopped. The compressor for refrigerator/Freezer side · When thermostat OFF demand from indoor unit completes the restart standby period. is received;
[Refrigerator/Freezer thermostat OFF conditions] Low pressure (LP1) < 0.098MPa LP1: Low pressure on refrigerator/Freezer side (Pressure detected with the low pressure sensor1 [S1NPL].)
Startup control [Refrigerator/Freezer]
OR
· In cooling operation: When LP2 < 0.196MPa continues for 2 consecutive minutes; · In heating operation: When LP2 < 0.098MPa continues for 2 consecutive minutes; or · When protection control (e.g. low pressure protection control) is activated: LP2: Low pressure on the air conditioning side (Pressure detected with the low pressure sensor [S2NPL].)
[Air conditioner (cooling)] Normally, to be 1.3 times as large as "a".
Residual fan control
Air flow rate corresponding to outdoor temperature
Outdoor unit fan
High pressure control 96Hz 0Hz
62Hz 15sec
15 sec
OFF
Compressor in stop mode
ON Compressor OFF
ON Refrigerator operation output
a
0
68Hz INV compressor
EV opens at 32 pls/sec.
EV
For 1.5 minutes
15~30sec
[Air conditioner (heating)]
EV opens at 10 pls/sec. EV
Normally, to be 1.3 times as large as "a".
a
0
ON Compressor OFF
10~25sec
Convenience Pack
51
Functions and Operation
Si81-503
Functions of R1 signal and R2 signal R1 signal: Operation enable signal from outdoor unit to refrigerator R2 signal: Operation enable signal from outdoor unit to freezer unit
R1 signal OFF (Solenoid valve for refrigerator showcase is OFF.)
7 When startup (within 1.5 minutes after the startup of the compressor for refrigerator unit): · RUN SW: ON ·& · LP1 < 0.196MPa 7 Except when startup: · Completion of restart standby ·& · LP1 < 0.196MPa
R1 signal ON (Solenoid valve for refrigerator showcase is ON.)
7 When startup (within 1.5 minutes after the startup of the compressor for refrigerator): · RUN SW: OFF · OR · LP1> 0.294MPa 7 Except when startup: · RUN SW: OFF · OR · The compressor for the refrigerating unit stops. · The compressor for the refrigerator/Freezer side is in operation. & · RUN SW: ON R2 signal ON (Solenoid valve for Freezer showcase is ON.) · RUN SWITCH: OFF
R2 signal OFF (Solenoid valve for freezer showcase is OFF.)
&
· The compressors for the refrigerator/Freezer side both stop due to malfunction.
Furthermore, when a malfunction occurs, the R2 signal will be output as shown below. ×
8
×
INV compressor (M1C)
STD compressor (M2C) 8
×
×
STD compressor (M2C)
INV compressor (M1C)
8: In normal operation × : Determination of ↓ malfunction R2 signal ON
52
¨ : Retry, stand by ↓
↓
ON OFF
R2 signal
¨
¨
¨
Thermostat OFF on Thermostat ON on Thermostat OFF refrigerator/Freezer side Air conditioning side (Guard timer) ↓
↓
↓
ON
OFF
OFF
Convenience Pack
Si81-503
Functions and Operation
3.4.4 Capacity control Electronic expansion valve control
Indoor unit
Outdoor unit
Electronic expansion valve (EV)
Main electronic expansion valve (EV1)
In cooling operation
In heating operation
The valve opening is controlled according to Td, LP2 and SH2 of the outdoor unit.
The valve opening is forcedly commanded from the outdoor unit in the case of Hp rise or mode change on the indoor unit. (While in normal operation, the valve opening is controlled individually on the indoor unit.)
The valve is fully closed.
When outdoor unit heat exchange is conducted with an evaporator, the valve opening is controlled according to Td and SH2. · Targeted Td = 94°C (when Td ≥ 90°C) · Targeted SH2 = 5°C (Td < 90°C) When the outdoor unit heat exchange is conducted with a condenser: Fully closed When the outdoor unit heat exchanger is not used: Fully closed
Injection electronic The valve opening is controlled so that the SH2 (suction gas superheated degree) falls in the expansion valve range of 4 to 20°C. (EV2)
* SH2 (Suction gas superheated degree) = TS2 (Suction pipe temperature on the refrigerator/Freezer side : R4–1T) –Te2 (Equivalent saturated temperature of the pressure sensor on the refrigerator/Freezer side : S1NPL)
Convenience Pack
53
Functions and Operation
Si81-503
Control of number of operating compressors This control is used for ON/OFF selection of INV compressor (INV), STD compressor 1 (NON1) and STD compressor 2 (NON2) according to A to X conditions shown below. [When the refrigerating unit is [In cooling operation] [In heating operation] in operation] D
I NV
D
I NV NON2
I NV M
A B
I NV NON1
E
U
NON2
T
I NV
C
I NV NON2
A N
B
V
D
I NV NON2
A
N
F
C
I NV NON1
E
U
B
V
NON2
T
I NV NON1
E
N
Y U
NON2
T S
S O H
G
NON1
L J
X
O
O
P
P
P
I NV NON1 NON2
Q
NON1
R
L J
K
I NV NON1 NON2
W
ALL OFF
A: Refrigerator/Freezer load: High B: Refrigerator/Freezer load: Low INV: HPS becomes activated. NON1: HPS becomes activated.
J
NON1 NON2
ALL OFF
B: Air conditioner thermostat: OFF INV: HPS becomes activated. NON1: HPS becomes activated.
B: Air conditioner thermostat: OFF Air conditioner load: Low INV: HPS becomes activated. NON1: HPS becomes activated.
C: Air conditioner load: High & NON1: Malfunction
G: Refrigerator/Freezer thermostat: ON
E: INV: HPS becomes activated.
H: Refrigerator/Freezer thermostat: OFF
I: Air conditioner thermostat ON Air conditioner load: High
J: NON2: HPS becomes activated.
&
Refrigerator/Freezer thermostat: ON INV: Malfunction INV: Guard timer operates for 2 minutes or more.
ALL OFF
NON1 NON2
A: Air conditioner load: High
D: Air conditioner thermostat: OFF & NON2: HPS becomes activated.
L:
I NV NON1 NON2
K
A: Air conditioner thermostat: ON
F: Refrigerator/Freezer thermostat: ON
K: Refrigerator/Freezer thermostat: OFF NON1: HPS becomes activated.
R
L
I
D: NON2: HPS becomes activated. E: INV: HPS becomes activated. Refrigerator / Freezer thermostat: ON
Q
NON1
K
I
NON1 NON2
V
J: Air conditioner thermostat: OFF NON2: HPS becomes activated. K: Air conditioner thermostat: OFF NON1: HPS becomes activated.
C: Air conditioner load: High & NON1: Malfunction D: Air conditioner thermostat OFF Air conditioner load: Low NON2: HPS becomes activated. E: INV: HPS becomes activated. I: Air conditioner load: High J: Air conditioner thermostat: OFF Air conditioner load: Low NON2: HPS becomes activated.
L: Air conditioner thermostat: ON
K: Air conditioner thermostat: OFF NON1: HPS becomes activated.
N: INV: HPS becomes activated.
L: Air conditioner thermostat: ON
O: Air conditioner load: High
N: INV: HPS becomes activated.
P: Air conditioner thermostat: OFF Air conditioner load: Low NON1: HPS becomes activated.
O: Air conditioner load: High
M: Refrigerator/Freezer thermostat: ON N: Refrigerator/Freezer thermostat: OFF INV: HPS becomes activated. O:
Refrigerator/Freezer thermostat: ON INV: Malfunction & INV: Guard timer operates for 2 minutes or more.
Q: Air conditioner thermostat: OFF NON2: HPS becomes activated.
P: N: Refrigerator/Freezer thermostat: OFF NON1: HPS becomes activated.
R: Air conditioner thermostat ON & NON1: Malfunction
T: Refrigerator/Freezer load: Low NON2: HPS becomes activated.
S: Air conditioner thermostat: ON Air conditioner load: High
U: Refrigerator/Freezer load: High
T: Air conditioner load: Low Air conditioner thermostat: OFF NON2: HPS becomes activated.
V: Refrigerator/Freezer load: Low INV: HPS becomes activated. NON1: HPS becomes activated. W: Refrigerator/Freezer thermostat: ON X: Refrigerator/Freezer thermostat: OFF
U: Air conditioner load: High V: INV: HPS becomes activated. NON1: HPS becomes activated.
P: Air conditioner thermostat: OFF Air conditioner load: Low NON1: HPS becomes activated. Q: Air conditioner thermostat: OFF NON2: HPS becom es activated. R: Air conditioner thermostat: ON & NON1: Malfunction S: Air conditioner load: High T: Air conditioner load: Low Air conditioner thermostat: OFF NON2: HPS becomes activated. U: Air conditioner load: High V: INV: HPS becomes activated. NON1: HPS becomes activated. Y: Air conditioner thermostat: OFF
54
Convenience Pack
Si81-503
Functions and Operation
Compressor step control In order to control the capacity, control the INV compressor in the following 18 steps.(No3 to No20) Step No.
INV compressor Hz (DC)
Step No.
INV compressor Hz (DC)
0 3 4 5 6 7 8 9 10 11
0 62 68 74 81 88 96 104 110 116
12 13 14 15 16 17 18 19 20
124 133 143 158 165 177 189 202 210
Step control of outdoor unit fan Conduct the step control of outdoor unit fan so that the high pressure HP falls in the range shown below. In cooling operation (Thermostat ON) : 0.98 to 1.56MPa In heating operation (Thermostat ON) : 1.86 to 2.35MPa (or 1.76 to 2.15MPa for Mode 74, 75 or 80) Units:rpm Step No.1 fan revolutions No.2 fan revolutions
1 250 0
2 350 0
3 450 0
4 550 0
5 650 0
6 750 0
7 250 350
Step No.1 fan revolutions No.2 fan revolutions
8 350 450
9 450 550
10 550 650
11 580 820
12 780 820
13 850 950
14 895 1040
Convenience Pack
55
Functions and Operation
Si81-503
3.4.5 Protection Control Low pressure protection control In order to protect compressors from damage due to abnormal drop of low pressure, the following stepping down control and protection control are conducted. [Refrigerator / Freezer side]
Normal operation (M1C+M2C) LP1> 0.245MPa
· INV compressor: 1.5-min. elapse after stop · STD compressor 1: 5 to 10-min. elapse after stop (The periods of time shown above vary.)
LP1 < 0.147MPa STD compressor 1 (M2C): OFF ( ) LP1 < 0.122MPa INV compressor (M1C): 62 Hz LP1 < 0.098MPa
OR
· INV compressor: After a lapse of 1 minutes · STD compressor 1: After a lapse of 1 to 10 minutes Varies with previous operation times
Stop with thermostat OFF
· LP1<0.03MPa continues for 1 consecutive sec.
Under this condition, the STD compressor disables operation on the refrigerator/Freezer side but enables operation on air conditioner side. (Only operation mode on the refrigerator/Freezer side becomes not functional.)
Compressors stop (in retry) Stop 11 times
Stop due to malfunction: E4 is displayed.
56
· Unit can be restarted through the remote controller, RUN switch, or resetting power supply.
Convenience Pack
Si81-503
Functions and Operation
[Air conditioner side]
Normal operation (M2C+M3C)
Cooling &
&
· LP2 < A MPa (8 cumulative min.) OR · LP2 < B MPa (35 cumulative min.)
After a lapse of restart standby time (1 to 10 minutes )
Heating SH2 < 5 Hp ≥ 1.96 & LP2 < 0.12 OR Hp ≥ 2.16 & LP2 < 0.2 Hp ≥ 1.76 & LP2 < 0.098
OR
· LP2 < 0.05MPa continues for 10 consecutive sec. · LP2 < 0.03MPa continues for 2 consecutive sec.
STD compressor 2: OFF LP2 < C MPa: 2 consecutive min.
After a lapse of restart standby time (1 to 10 min. )
STD compressor: OFF
Compressors stop Stop 11 times
Stop due to malfunction: E4 is displayed.
This period of time varies with continuous operating time before the STD compressors stop. Under this condition, the STD compressor disables operation on the air conditioner side but enables operation on refrigerator/ Freezer side.
· Unit can be restarted through the remote controller, RUN switch, or resetting power supply.
Values of A, B, and C Cooling 50Hz Heating 50Hz
Convenience Pack
A
B
C
0.25 —
0.32 —
0.196 0.098
57
Functions and Operation
Si81-503
High pressure protection control When a malfunction occurs, in order to avoid activating protection devices due to increase in high pressure and protect compressors from transient increase in high pressure, the high pressure protection control is conducted.
Normal operation
&
HP ≥ 2.94MPa
STD compressor 2: OFF
Untill 10 times stop
&
&
STD compressor 1 or 2: ON
· A lapse of 5 sec. · HP ≥ 2.94MPa
STD compressor 1: OFF · A lapse of 5 sec. · HP ≥ 2.94MPa
INV compressor: 5 steps down every 5 min. (to Step 1)
· A lapse of 3 to 10 min. · HP < 2.65MPa
&
· A lapse of 3 to 10 min. · HP < 2.65MPa
INV compressor: 1 step up every 1 min.
HP < 2.94MPa
HP ≥ 2.94MPa HP ≥ 2.94MPa
INV compressor stop
&
· 11 times stop · HPS actuated (S1PH)
Stop due to malfunction: E3 is displayed.
58
· Unit can be restarted through the remote controller, RUN switch, or resetting power supply.
Convenience Pack
Si81-503
Functions and Operation
Discharge pipe protection control When a malfunction occurs, or in order to protect the internal temperature of compressors from transient increase in discharge pipe temperature, the discharge pipe temperature protection control is conducted. [Refrigerator / Freezer side] Td1 > 145˚C
Normal operation
INV compressor
& OR
· Td1 > 100˚C · Td1: Sudden rise
· Td1 ≤ 100˚C · 1.5 to 6 min. lapse of restart standby time
INV compressor: 1 step down every 15 sec.
OR
STD compressor 1
· Td1 > 120˚C 15 consecutive sec. · Td1 > 115˚C 90 consecutive sec. · Td1 > 125˚C
&
INV compressor: OFF STD compressor 1: OFF
· Td1 ≤ 100˚C · 4 to 10 min. lapse of restart standby time
Td1: Temperature (˚C) detected by discharge pipe thermistor(R3-1T) Stop 15 times
Stop due to malfunction: F3 is displayed.
· Unit can be restarted through the remote controller, RUN switch, or resetting power supply.
[Air conditioner side]
Normal operation
OR
· Td2 > 100˚C · Td2: Sudden rise
A lapse of restart standby time
STD compressor 2: OFF
&
· Td2 ≤ 100˚C · 4 to 10 min. lapse of restart standby time
· Td2 > 120˚C 15 consecutive sec. OR · Td2 > 115˚C 90 consecutive sec. · Td2 > 135˚C Td2: Temperature (˚C) detected by discharge pipe thermistor(R3-2T)
STD compressor 2 OFF Stop15 times
Stop due to malfunction: F3 is displayed. · Unit can be restarted through the remote controller, RUN switch, or resetting power supply.
Convenience Pack
59
Functions and Operation
Si81-503
STD Compressor Overload Protection STD compressor: ON
· OC is activated (13A).
· 30 min. lapse after stop
STD compressor: OFF Stop 3 times
Stop due to malfunction: E0 is displayed.
· Unit can be restarted through the remote controller, RUN switch, or resetting power supply.
Inverter protection control In order to prevent the inverter from tripping when a malfunction occurs or transient overcurrent of inverter and rise in fin temperature, inverter current protection control and inverter fin temperature control are conducted. [Inverter current protection control]
Normal operation Inverter current > 13A
&
· A lapse of 3 min. · Inverter current < 13A
No
& Does the INV compressor run at a minimum frequency (i.e., 62 Hz)?
A lapse of 5 min. INV compressor: 1 step up every 1 min.
Inverter current < 10A
Yes INV compressor: 1 step down every 15sec.
· Inverter upper limit Hz = 210 Hz · Inverter current < 10A
INV compressor: 62 Hz
STD compressor: OFF
· Inverter current > 16.5A continues for 5 consecutive sec. OR · Inverter current > 13.0A continues for 260 consecutive sec.
Restart standby for 1 to 6 min.
INV compressor stops.
Stop 10 times
Stop due to malfunction: L8 is displayed.
60
Stop 3 times
Stop due to malfunction: L9 is displayed.
· Unit can be restarted through the remote controller, RUN switch, or resetting power supply.
Convenience Pack
Si81-503
Functions and Operation
[Inverter fin temperature protection control]
Normal operation Tf > 94˚C
Outdoor unit fan: 1 step up every 1 min.
· A lapse of 3 min. · Exceeding 94˚C
No
Does the INV compressor run at a minimum frequency (i.e., 62 Hz)?
&
A lapse of 5 min.
· Inverter upper limit Hz = 210 Hz · Tf < 80˚C
INV compressor: 1 step up every 1 min.
Tf < 80˚C
INV compressor: 62 Hz
Yes INV compressor: 1 step down every 15 Sec.
STD compressor: OFF
Restart standby for 1 to 6 min.
Tf > 94˚C
INV compressor stops. Stop 10 times
Stop due to malfunction: L4 is displayed.
Convenience Pack
· Unit can be restarted through the remote controller, RUN switch, or resetting power supply.
61
Functions and Operation
Si81-503
3.4.6 Other Control Control of SV9 and SV10 during heat recovering SV9 and SV10 open or close under high pressure control (aiming at 1.9 to 2.3 MPa). Defrost control In heating operation, to thaw frost deposited on the outdoor unit heat exchanger, defrosting operation is conducted.
Normal operation
OR
· LP2<0.25MPa continues for cumulative 60 minutes or more. · LP2<0.25MPa continues for cumulative 30 minutes or more. (When the previous defrosting operation completes prematurely)
OR
· Hp>1.5MPa · Hp>1.2MPa continues for 4 minutes. · Hp>1.0MPa continues for 7 minutes. · Hp>0.9MPa continues for 12 minutes. · A lapse of 17 minutes
Defrosting operation · Mode43 → Mode75 (When the condition A is satisfied → Mode8) · Mode46, 52 → Mode75 (When the condition A is satisfied → Mode11) · Mode47 → Mode80 · Mode59 → Mode74 Condition A (Reverse cycle condition) · The previous defrosting operation OR completes prematurely. · INV compressor<100 Hz
Refrigerant recovery operation While in each operation mode shown below, to recover the refrigerant accumulated, the refrigerant recovery operation is conducted. A. Refrigerant recovery 1: Use to recover the refrigerant accumulated in the indoor unit and the suction pipe. AND
· LP2>0.4MPa or more continues for consecutive 5 minutes. · Hp<2.4MPa
The system operates in operation mode 29, 30, or 35.
STD compressor 2: ON OR
· LP2<0.2MPa · Hp>2.6MPa · A lapse of 2 minutes
LP2: Low pressure (MPa) on the STD compressor 2 side
B. Refrigerant recovery 2: In heat recovery operation, used to recover the refrigerant accumulated in the outdoor unit heat exchanger. · LP2 > Ta saturated pressure –0.01Mpa continues for consecutive 5 minutes. AND · Hp < 2.4MPa · LP2 > 0.3MPa The system operates in operation mode 64, 65, or 70.
STD compressor 2: ON (Pc-R2T) < 5˚C Pc: High-pressure equivalent saturated temperature (˚C) R2T: Indoor unit liquid pipe temperature (˚C) R3T: Indoor unit gas pipe temperature (˚C)
62
Convenience Pack
Si81-503
Functions and Operation
C. Refrigerant recovery 3: When being used as condenser both on the indoor and outdoor units, used to recover the refrigerant accumulated in the indoor unit. · 20 minutes under Pc – R2T > 2˚C elapse. AND · Hp < 2.4MPa · Indoor units all stop. The system operates in operation mode 74, 75, or 80.
Four way valve (Y2R): OFF OR
· (Pc – R2T) < 5˚C · A lapse of 3 minutes
D. Refrigerant recovery 4: In heat recovery operation, used to recover the refrigerant accumulated in the liquid receiver.
OR
· Ta < –10˚C & the mode concerned continues for cumulative operating time of 60 minutes or more. · Ta < 0˚C & the mode concerned continues for cumulative operating time of 70 minutes or more. · Ta < 10˚C & the mode concerned continues for cumulative operating time of 80 minutes or more. · The mode concerned continues for cumulative operating time of 90 minutes or more.
The system operates in operation mode 64, 65, or 70.
Four way valve (Y2R): ON A lapse of 3 minutes
Indoor unit control (for refrigerant recovery in heating operation) 1. Indoor unit fan forced ON: With the heating-use remote controller turned OFF, the indoor unit fan also turns ON in order to recover the refrigerant accumulated in the indoor unit. 2. Indoor unit fan forced H tap: In order to prevent high pressure cut and smooth transient refrigerant performance, even through the remote controller is set to L tap in heating operation, the indoor unit fan is forcedly set to H tap. Fan control 1. Indoor unit fan forced ON 2. Indoor unit fan forced H tap
Remarks Refrigerant recovery control 3 Example) Mode 75 → 65 · When the indoor unit conducts hot startup control to change heating mode: (Within 4 minutes for startup and defrost resetting, respectively) Example) Mode 64 → 65, 65 → 64 · When mode for Cool/Heat selection is set as shown below: Example) Mode 64 → 29, 65 → 30 · To change mode from surplus heating mode to heat recovery operation mode: Example) Mode 75 → 65 · To change the number of operating compressors related to NON inverter compressors: Example) Mode 64 → 59 Refrigerant recovery control 2 Example) Mode 64 →59
Emergency operation If a malfunction occurs on any of the following applicable compressors and then the malfunction is determined, the system will automatically select other operative compressor. Compressor in malfunction INV compressor STD compressor
Refrigerator/ Freezer Air conditioner (cooling) Air conditioner (heating) Booster compressor
Convenience Pack
Emergency operation procedure If the malfunction is determined, operate only the STD compressor 1 to cool the showcase (while in operation mode 12, 35, 70, or 80). If the malfunction is determined, operate only the INV compressor to cool the showcase (while in operation mode 8, 11, or 30). If the malfunction is determined, operate only the normal STD compressor to conduct cooling operation (while in operation mode 6, 7, 8, or 11). If the malfunction is determined, operate only the normal STD compressor to conduct heating operation (while in operation mode 41, 42, 43, or 46). If the malfunction is determined, reduce the targeted low pressure and increase the operating frequency to cool the freezer.
63
Functions and Operation
3.5
Si81-503
Control of Booster Unit (LCBKP1AR)
3.5.1 Basic Control Flow
3.5.2 Stop due to Malfunction To protect compressors, if any of the following items exceeds the criterion, thermostat will turn OFF, and a malfunction will be determined according to the number of retry times.
3
Item Inverter fin temperature rise Compressor overcurrent Failure in compressor start up
4
Compressor lock
Inverter PC board
—
3
5
Insufficient voltage to compressor Instantaneous overcurrent on compressor
Inverter PC board
—
10
Inverter PC board
—
10
1 2
6
Detector
Measured value
Number of retry times
Inverter PC board
85°C
5
Inverter PC board
—
10
Inverter PC board
—
20
3.5.3 Startup Standby In order to prevent the frequent ON/OFF operations of compressor, once the compressor has stopped running, it will not restart for a set period of time. Standby time: 1 min.
64
Convenience Pack
Si81-503
Functions and Operation
3.5.4 Startup / Stop Control Max 20min
Stop
Standby time: 1 min.
STEP20 *STEP15
2 min
2 min STEP up once every 30 sec.
STEP4
STEP up once every 30 sec.
STEP0 Closes between T1 and T2 ON S/C thermostat OFF ON R2 signal OFF ON Booster power supply OFF
*While in capacity setting 1, set the compressor operating frequency to STEP 17. In order to prevent the backflow of liquid, this control is used to open or close the solenoid valve when starting the compressor. For a period of one minute at the startup, repeat the ON/OFF operations of the compressor several times.
3.5.5 Compressor Step Control In order to control the capacity, control the INV compressor in the following steps. Step 0 4 5
Frequency 0 66 77
Step 12 13 14
Frequency 139 143 155
6 7 8 9 10 11
85 94 103 112 121 130
15 16 17 18 19 20
168 175 183 190 195 202
Convenience Pack
65
Troubleshooting
Si81-503
4. Troubleshooting 4.1
Initial Checking at Servicing
Symptoms and check details Check points and details Temperature inside Is the outdoor unit running? the showcase is at Is the sight glass liquid-sealed (not flushed)? Has the color of the indicator turned dry (green)? abnormal level. Is the booster unit running? Is the power supplied to the outdoor unit, inverter box, showcase, and timer box? Is the showcase's fan running? Is the showcase's solenoid valve operating properly? (No broken wires?) Is the showcase's thermostatic expansion valve operating properly? (No broken capillaries?) Is the defrost operation conducted properly? (No excessive frosting?) Is the outdoor unit heat exchanger blocked with dust or the like? Is the air curtain blocked at the air outlet or inlet of showcase? Is the fan of the inverter box running? Is the air inlet or outlet not blocked? Equipment does not Check to be sure the malfunction code on the remote controller. run. Check to be sure the malfunction LED display for the booster unit on the inverter box.
The following symptoms are not malfunctions Symptoms Causes Equipment does not When the equipment is restarted immediately after The equipment is controlled in an affordable way. operate. it stops The equipment will automatically start running after a lapse of 1 to 5 min. Immediately after power supply is turned ON The equipment is kept in standby mode until the microcomputer gets ready for operation. Wait for a period of approx. 2 min. Sounds are This is a sound produced when gas (refrigerant) produced. A faint continuous hissing sound produced while in flows to the outdoor unit or booster unit. refrigerating operation This is a sound produced when gas (refrigerant) A faint continuous hissing sound produced stops flowing or the flow is changed. immediately after startup or stop of the unit This sound is produced through changing the An operating sound changes in the tone interval. compressor operating frequency. The outdoor unit fan While in operation The fan speed is controlled in order to put the does not run. equipment into optimum operating conditions.
Guideline for right operating conditions Items High pressure
Measuring methods Measure with a service checker or pressure gauge in a stable state 20 minutes or more after starting operation.
Right ranges 1.6 to 2.2 MPa (16 to 22 kgf/cm2) (Only in heating operation)*1
Low pressure LP1 (refrigerating unit side)
Measure with a service checker or pressure gauge in a stable state 20 minutes or more after starting operation.
0.1 to 0.4 MPa (1 to 4 kgf/cm2)
Low pressure LP2 (air conditioner side)
Measure with a service checker or pressure gauge in a stable state 20 minutes or more after starting operation.
0.3 to 0.6 MPa (3 to 6 kgf/cm2) (Only in cooling operation)*1
(Tc+20) to 120°C Tc: High-pressure equivalent saturation condensing temperature Te+(2 to 20)°C Suction pipe Measure with a surface thermometer Te: Low-pressure equivalent temperature (in places insensitive to injection). saturation condensing temperature *1 Reference values for operating pressure are criteria for high pressure in heating operation and for low pressure in cooling operation. Furthermore, since the high pressure in cooling operation and low pressure in heating operation significantly vary with the use environments, no reference values are noted. GOOD/NO GOOD judgment is made in accordance with the operating conditions responding to operation mode and load conditions at the time of measurement. Discharge pipe temperature
66
Measure with a surface thermometer or service checker.
Convenience Pack
Si81-503
Troubleshooting
Relationship between refrigerant pressure and temperature (R-407C saturation curve)
2
(kg/cm ) MPa
20.4
2.0
Gauge pressure
R-407C (liquid side)
15.3
1.5
10.2
1.0
5.1
0.5
0
0 -40
R-407C (gas side)
-20
0
20
40
60
80
100
120
140
Temperature ˚C
Method of checking booster unit The following section shows the guideline for the discharge gas temperature, high pressure, and low pressure of the booster unit. Discharge gas temperature High pressure Low pressure
70°C~100°C 0.147MPa~0.441MPa –0.002MPa~0.017MPa
If the discharge gas temperature falls in the abnormal range, immediately stop the booster unit and check it for the following points. If the discharge gas of the booster unit is low in temperature. Check whether or not the pressure equalizer pipes are connected, the feeler bulbs are mounted in the proper way (e.g. disconnected or not insulated), or else. If the discharge gas of the booster unit is high in temperature. Check whether or not the unit is excessively frosted due to faulty defrosting operation, the equalizer pipes are connected to proper position (i.e., to the downstream side from the feeler bulb position), the set temperature is too low (i.e., below –25°C), the expansion valve is blocked due to moisture choke (color of indicator: green (normal)/yellow (abnormal), the refrigerant is charged by a proper quantity (sight glass: liquid sealed), or else. However, the discharge gas temperature, high pressure, and low pressure of the booster unit may fall outside the guideline aforementioned according to the types of showcases, set temperature, and the length of connection piping. Procedure for forced backup operation on outdoor unit
Operating the main circuit breaker twice makes it possible to conduct the forced backup operation (i.e., to prohibit the operation of compressors having a failure in insulation and only to forcedly run operable compressors). Since users are also able to conduct the forced backup operation, it is recommended to use this function.
Convenience Pack
67
Troubleshooting
Si81-503
1. Set the main circuit breaker of the outdoor unit to ON, and then the air conditioning remote controller to ON. Restarting operation will make automatic judgment on the insulation conditions of parts concerned again. ↓ "Malfunction judgment": The main circuit breaker will be set to OFF again.
→
"Normal judgment": The operation will be continued.
2. Set the main circuit breaker to ON, and then the air conditioning remote controller to ON again. (The forced backup operation will be initiated.) Precautions: The timing to turn OFF the circuit breaker varies with faulty parts. If the INV compressor has a failure in insulation, the circuit breaker will be immediately activated. However, if the STD compressor 1 or 2 has a failure in insulation, it may take time to activate the circuit breaker due to loads applied.
4.2
Troubleshooting by Remote Controller/LED Lamps
Apply troubleshooting through the malfunction codes by the remote controller only to malfunctions in the indoor and
outdoor unit systems. For troubleshooting in the booster unit system, make use of LED lamps on the PC boards.
4.2.1 List of Malfunction Codes by Remote Controller If operation stops due to malfunction, the remote controller’s operation LED blinks, and malfunction code is displayed. (Even if stop operation is carried out, malfunction contents are displayed when the inspection mode is entered.) The malfunction code enables you to tell what kind of malfunction caused operation to stop. See next page for malfunction code and malfunction contents.
68
Convenience Pack
Si81-503
Troubleshooting
: ON
: BLINK
Remote controller display Malfunction Operation "Check" Unit No. code lamp display A0 A1 A1 A3 A6 A7 A9 AF AH AJ C4 C5 C9 CJ E0 E1 E1 E3 E4 E5 E7 E9 EJ F3 H0 H3 H4 H7 H9 J2 J3 J5 JA JC L0 L3 L4 L5 L8 L9 LA LC P1 P4 U0 U1 U2 U4 U5 U8
Details of malfunction
Actuation of external protection device connected to indoor unit Faulty PC board on indoor unit Faulty PC board on indoor unit Malfunction of drain level control system on indoor unit Malfunction of fan motor on indoor unit Malfunction of swing flap motor on indoor unit Malfunction of drive part in electronic expansion valve on indoor unit Abnormal drain level on indoor unit Malfunction of air cleaner on indoor unit or dirty air cleaner Faulty capacity setting on indoor unit
* * * * * * * * * *
Malfunction of thermistor system for heat exchange on indoor unit (Faulty contact, wire disconnection, short circuit, faulty thermistor)
*
Malfunction of thermistor system for gas pipe on indoor unit (Faulty contact, wire disconnection, short circuit, faulty thermistor)
*
Malfunction of thermistor system for suction air to indoor unit (Faulty contact, wire disconnection, short circuit, faulty thermistor) Malfunction of air thermistor system on remote controller Actuation of protection device, faulty STD compressor (grounding) Faulty outdoor unit/PC board assembly Faulty outdoor unit/PC board assembly Abnormal high pressure level Abnormal low pressure level INV compressor lock Malfunction of fan motor on outdoor unit Malfunction of electronic expansion valve Malfunction of freezer (when the malfunction of booster unit system is confirmed.) Abnormal discharge pipe temperature
* *
Malfunction of 3 sensors (when three or more sensors among thermistors for outdoor air, suction pipe and discharge pipe and sensors for high pressure and low pressure malfunction) Faulty high pressure switch Faulty low pressure switch Abnormal signal from fan motor on outdoor unit Malfunction of thermistor for outdoor air Malfunction of current sensor Malfunction of thermistor for discharge pipe Malfunction of thermistor for suction pipe Malfunction of high pressure sensor Malfunction of low pressure sensor Faulty outdoor inverter P.C. board Abnormal temperature rise of outdoor switch box Rise of inverter radiation fin temperature Instantaneous overcurrent of INV compressor Abnormal current of compressor Faulty startup of inverter compressor Malfunction of outdoor unit/power unit Malfunction of transmission system Open phase/Imbalance in power supply Malfunction of fin thermistor Shortage of refrigerant, Low pressure drop due to failure to open stop valve Reverse phase, open phase Abnormal power supply voltage, instantaneous power failure Malfunction of transmission (between indoor and outdoor units) * Malfunction of transmission (between remote controller and indoor unit) * Malfunction of transmission (between main remote controller and sub remote controller) *
: OFF Page referred for details 73 74 74 75 77 79 81 83 84 85
86 86 86 87 88 89 89 90 92 95 97 99 100 101 103 105 106 107 108 109 108 108 110 111 — 112 113 114 116 118 — 120 122 124 125 126 127 — 128 129
U9
Malfunction of transmission (between other indoor units in the same system and outdoor unit/heat source unit)
130
UA
Improper combination of indoor and outdoor units (model (having wrong applicable refrigerant)/number of units)
132
Convenience Pack
69
Troubleshooting
Si81-503
: BLINK
: ON
Remote controller display Malfunction Operation "Check" Unit No. code lamp display UC UE UF UH
Details of malfunction
Duplication of centralized address Malfunction of transmission (between indoor unit and centralized controller) System has not been set yet Faulty system line
*
: OFF Page referred for details 133 134 136 137
Malfunction codes (ex. ) In the case of malfunction codes in outline characters on a colored background, the system is able to run. Remote controller display *1) In case of malfuction with * mark, refrigerator/Freezer system only operates.
4.2.2 Troubleshooting by LED Lamps on PC Board A. Troubleshooting of Outdoor Unit System On this outdoor unit, through the operation of pushbutton switches on the PC board, malfunction codes are displayed by LEDs. [Setting procedure] (Pushbutton switches) 1. Press the MODE button (BS1). 2. Press the SET button (BS2) 15 times. 3. Pressing the RETURN button (BS3) will display the first digit of a malfunction code by LED. 4. Pressing the SET button (BS2) will display the second digit of the malfunction code by LED. 5. Pressing the MODE button (BS1) will put system back into the former state.
MODE
SET
: ON LED display (Press the BS3 switch once.)
(Press the BS2 switch once.)
A 20 21 22 23 24 25 26 A 20 21 22 23 24 25 26
Remote controller display
RETURN
: BLINK
RESET
: OFF
Details of malfunctions
Actuation of external protection device connected to indoor unit Faulty PC board on indoor unit Malfunction of drain level control system on indoor unit
Malfunctions in indoor unit system
Malfunction of fan motor on indoor unit Malfunction of swing flap motor on indoor unit Malfunction of drive part in electronic expansion valve on indoor unit Abnormal drainlevel on indoor unit Malfunction of air cleaner on indoor unit Faulty capacity setting on indoor unit Malfunction of thermistor system for heat exchange on indoor unit Malfunction of thermistor system for gas pipe on indoor unit Malfunction of thermistor system for suction air to indoor unit Malfunction of discharge air temperature from indoor unit Malfunction of air thermistor system on remote controller
70
Convenience Pack
Si81-503
Troubleshooting
: ON LED display (Press the BS3 switch once.)
(Press the BS2 switch once.)
A 20 21 22 23 24 25 26 A 20 21 22 23 24 25 26
Remote controller display
: BLINK
: OFF
Details of malfunctions
Actuation of protection device Faulty setting with outdoor unit/PC board assembly Abnormal high pressure level Abnormal low pressure level Compressor motor lock Malfunction of fan motor on outdoor unit Abnormal electronic expansion valve Abnormal discharge pipe temperature Malfunction of three sensors
Malfunctions in outdoor unit system
Faulty high pressure switch Faulty low pressure switch Malfunction of fan motor signal on outdoor unit Malfunction of thermistor for outdoor air Malfunction of current sensor Malfunction of thermistor for discharge pipe Malfunction of thermistor for suction pipe Malfunction of high pressure sensor Malfunction of low pressure sensor Abnormal temperature inside switch box Temperature rise of inverter radiation fin Malfunction of INV compressor Abnormal current of compressor Faulty startup of compressor Malfunction of transmission system (between inverter and control PC board) Open phase/Imbalance in power supply
Malfunctions in system line
Malfunction of radiation fin thermistor
Convenience Pack
Refrigerant shortage Reverse phase Abnormal power supply voltage Malfunction of transmission between indoor and outdoor units
71
Troubleshooting
Si81-503
B. Troubleshooting of Booster Unit System Setting the dip switch (DS3-2) in the inverter box to ON will display the details of malfunctions by LEDs. Furthermore, the history of malfunctions is kept displayed until power supply is turned OFF. LED display
Inverter box system
LED1
72
LED2
LED3
LED4
Remote controller display
Page referred for details
Details of malfunctions
Faulty PC board
138
Actuation of HPS
139
Compressor lock
140
Temperature rise of radiation fin
142
Instantaneous overcuurent of DC output
143
Electronic thermal
145
Stall prevention
146
Malfunction of transmission (between inverter and control PC board)
148
Malfunction of thermistor for PC board
149
Malfunction of thermistor for radiation fin
150
Faulty capacity setting
151
Refrigerant shortage
152
Abnormal power supply voltage
153
Malfunction of AirNet transmission
155
Convenience Pack
Si81-503
4.3
Troubleshooting
Flow Chart for Troubleshooting-Indoor Unit System
4.3.1 Malfunction of External Protection Device Remote Controller Display
A0
Applicable Models
All indoor units
Methods of Malfunction Detection
Detect the malfunction at the external input terminals of the indoor unit thorough open and short circuit between the terminals.
Malfunction Decision Conditions
When the circuit between the external input terminals becomes open with "external ON/OFF input" set on the remote controller
Supposed Causes
Actuation of external protection device Faulty field setting Faulty indoor unit PC board
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
The external protection device is connected to terminals T1 and T2 on the terminal block of the indoor unit.
YES
Probe the cause of actuation of the external protection device and then take countermeasures against it.
NO
Check the setting of "external ON/OFF input" for field settings with the remote controller. The setting position is set to "03".
YES
Change the setting position to 01 or 02.
NO Replace the indoor unit PC board.
Convenience Pack
73
Troubleshooting
Si81-503
4.3.2 Faulty PC Board Assembly on Indoor Unit Remote Controller Display
A1
Applicable Models
All indoor units
Methods of Malfunction Detection
Check data from E2PROM.
Malfunction Decision Conditions
When data could not be properly received from E2PROM
Supposed Causes
Faulty indoor unit PC board
E2PROM: A type of non-volatile memory, which maintains the memory contents even if power supply is turned OFF.
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Turn power supply OFF once and then ON again.
Is the system reset normally?
NO
YES
External factor other than the defect in the PC board assembly (e.g. noise) is supposed to cause this trouble. Replace the indoor unit PC board.
74
Convenience Pack
Si81-503
Troubleshooting
4.3.3 Malfunction of Drain Level Control System (33H or S1L) Remote Controller Display
A3
Applicable Models
All indoor units
Methods of Malfunction Detection
By detection of float switch OFF
Malfunction Decision Conditions
When the float switch turns OFF even though there are no conditions to raise water level
Supposed Causes
Convenience Pack
230V power is not supplied. Faulty float switch or short circuit connector Faulty drain pump Clogged or inverse drafted drain pipe Faulty indoor unit PC board Faulty contact of connector
75
Troubleshooting
Si81-503
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Is the power supply voltage 230V?
NO
Set the power supply voltage to 230V.
YES The float switch is connected to X8A (X15A) on the indoor unit PC board.
NO
YES The contact of the float switch is short-circuited. (Disconnect X8A (X15A) and check the continuity.)
CN8 has a short circuit connector.
NO
Mount a short circuit connector or float switch and then resume operation.
YES
YES
NO
If X8A (X15A) on the indoor unit PC board is directly short-circuited, the system returns to normal state.
NO
Faulty indoor unit PC board
YES Faulty contact of connector
Water are left on the drain pan.
NO
YES
The float switch functions normally.
NO
Replace the float switch.
YES Rectify the sticking point of the float switch and then resume operation.
The drain pump is connected to the terminals Y1 and Y2 or to X25A on the indoor unit PC board.
NO
Connect the drain pump and then resume operation.
YES
When the power supply to the indoor unit is reset, the drain pump runs.
YES
Check drain piping for any clogging or inverse draft.
NO
230V power is applied between the terminal Y1 and Y2 or to X25A. (Measure this voltage within five minutes after power supply is reset.)
NO
Replace the indoor unit PC board.
YES Replace the drain pump or check if for dust caught.
76
Convenience Pack
Si81-503
Troubleshooting
4.3.4 Malfunction of Indoor Unit Fan Motor Remote Controller Display
A6
Applicable Models
Indoor units (FXF100 · 125LVE)
Methods of Malfunction Detection
Detection of abnormal fan speed by a signal from the fan motor
Malfunction Decision Conditions
When fan speed does not increase
Supposed Causes
Convenience Pack
Broken wire, short circuit or disconnection of connector in fan motor harness Faulty fan motor (broken wire or poor insulation) Abnormal signal from fan motor (defective circuit) Faulty PC board Instantaneous fluctuation of power supply voltage Fan motor lock (Caused by motor or other external factors) Fan does not run due to the entanglement of foreign matters around the fan.
77
Troubleshooting
Si81-503
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Turn off the power supply.
YES Is there any foreign matter around the fan?
YES
Remove foreign matters.
NO
Is the harness from the NO fan motor properly connected to X20A connector on A1P?
NO
Connect properly.
YES
By disconnecting the connector between NO the fan motor and A1P disconnected, the fan can be lightly turned by hands.
NO
Replace the fan motor.
YES
Check for the fan motor connector. (*1)
Do resistance NO values between all wires exceed reference values? (*1) YES
NO
Replace the fan motor.
Replace the indoor unit PC board.
*1: Turn power supply OFF. With the fan motor's connector disconnected, measure resistance between all pins and check to be sure the resistance exceeds the values listed below.
1 White 2 Orange 3 Brown 4 Blue 5
Criteria Measuring point 1MΩ or more 1-4 2-4 100kΩ or more 3-4 100Ω or more 4-7 100kΩ or more
6 7 Red
78
Convenience Pack
Si81-503
Troubleshooting
4.3.5 Malfunction of Swing Flap Motor (MA) Remote Controller Display
A7
Applicable Models
All indoor units
Methods of Malfunction Detection
Detect using the ON/OFF operation of limit switch when the motor runs.
Malfunction Decision Conditions
When the ON/OFF operation of the limit switch for positioning use cannot be reversed even though the swing flap motor is energized for a fixed period of time (approx. 30 seconds)
Supposed Causes
Convenience Pack
Faulty swing motor Faulty relay cable (power supply or limit switch) Faulty mechanism of airflow direction adjustment flap cam Faulty indoor unit PC board
79
Troubleshooting
Si81-503
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Is the power supply voltage 230V?
NO
Set the power supply voltage to 230V.
YES Does the indoor unit incorporate the swing flap function?
NO
Replace the indoor unit PC board.
YES By turning power supply OFF once and then ON again, the swing motor can run.
YES
NO
The connector is connected to X9A on the indoor unit PC board.
NO Connect the connector to X9A and resume operation.
YES
The limit switch functions normally.
NO Replace the swing motor.
YES The relay cable is short-circuited or broken. Turn the swing flap ON and use the remote controller to stop and then start it again. In this case, 200V power is applied to X6A on the indoor unit PC board. (Measure this voltage within 30 seconds after power supply is reset.)
YES
Replace the limit switch relay cable.
NO NO
Replace the indoor unit PC board.
YES
The relay cable is broken.
YES Replace the power supply relay cable.
NO Remove the cam mechanism of swing flap from the swing motor and resume operation. In this case, the motor runs normally.
NO Replace the swing motor.
YES Disassemble the cam mechanism once and then reassemble it to run.
80
Convenience Pack
Si81-503
Troubleshooting
4.3.6 Malfunction of Drive Part (Y1E) in Electronic Expansion Valve Remote Controller Display
A9
Applicable Models
All indoor units
Methods of Malfunction Detection
Check the coil conditions of the electronic expansion valve with the microcomputer.
Malfunction Decision Conditions
When the PIN input of the coils of the electronic expansion valve is not normal at the time of initializing the microcomputer
Supposed Causes
Faulty drive part in electronic expansion valve Faulty indoor unit PC board Faulty relay cable
Convenience Pack
81
Troubleshooting
Si81-503
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
The electronic expansion valve is connected to X7A on the indoor unit PC board.
NO
After connection, turn power supply OFF once and then ON again to resume operation.
YES
This drive part is normal when checking the electronic expansion valve for the coil in the drive part. (*1)
NO
Replace the drive part in the electronic expansion valve.
YES
The relay cable is short-circuited or broken.
YES
Replace the relay cable.
NO
If the drive part does not run even by turning power supply OFF once and then ON again, replace the indoor unit PC board.
*1: Method of checking the coil in the drive part of the electronic expansion valve Remove the electronic expansion valve from the PC board and then check continuity between connector pins to make judgment. (In the case of normal part) Pin No.
White
White
Yellow
5
Orange
Blue
¡ Approx. 300Ω
Yellow Orange
5
Red
Brown
5
¡
5
¡
Approx. 150Ω
Approx. 300Ω
5
5 ¡
Approx. 150Ω Blue Red
5
¡
Approx. 150Ω
5 ¡
Approx. 150Ω
5
Brown
¡ : With continuity 5 : Without continuity
82
Convenience Pack
Si81-503
Troubleshooting
4.3.7 Abnormal Drain Level Remote Controller Display
AF
Applicable Models
All indoor units
Methods of Malfunction Detection
Detect water leaks from the humidifier system through the ON/OFF operation of float switch on the compressor not in operation.
Malfunction Decision Conditions
When the float switch changes from ON to OFF while the compressor is not in operation
Supposed Causes
Water leaks from the humidifier unit (option) Faulty construction of drain piping (example: inverse slope) Faulty indoor unit PC board
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Field drain piping has a failure in construction such as inverse slope.
YES
Rectify the drain piping.
NO
The humidifier unit (option) is incorporated in the indoor unit.
YES
Check the humidifier unit for any water leak.
NO Faulty indoor unit PC board.
Convenience Pack
83
Troubleshooting
Si81-503
4.3.8 Malfunction or Stain on Air Cleaner Remote Controller Display
AH
Applicable Models
All indoor units
Methods of Malfunction Detection
Input operation signals or discharge pulse signals from the air cleaner and then detect this malfunction. * Even if the malfunction is detected, the air conditioner will not stop but only the air cleaner will stop.
Malfunction Decision Conditions
Operating and 1. When discharge pulses are transmitted from the air cleaner 10 times 2. When no operation signals are transmitted from the air cleaner for a period of 20 seconds
Supposed Causes
Malfunction of air cleaner (option) Faulty indoor unit PC board Dirty filter in air cleaner
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
The air cleaner is built in the indoor unit.
NO
Replace the indoor unit PC board.
YES
Does the dust-collecting element in the air cleaner get dirty?
NO
Clean the dust-collecting element.
YES
Turn power supply OFF once and then ON again.
Is "AH" displayed on the remote controller?
YES
Defect in the air cleaner is supposed to cause this trouble.
NO
External factor other than the defect in the air cleaner (e.g. noise) is supposed to cause this trouble.
84
Convenience Pack
Si81-503
Troubleshooting
4.3.9 Faulty Capacity Setting Remote Controller Display
AJ
Applicable Models
All indoor units
Methods of Malfunction Detection
Capacities are determined according to the resistance of the memory built in the memory IC on the indoor unit PC board and of the capacity setting adapter. Make judgment on whether the resistance is normal or abnormal.
Malfunction Decision Conditions
Operating and 1. When the capacity code is not stored in the PC board and the capacity setting adapter is not connected 2. When a capacity that the model concerned does not have is set
Supposed Causes
Failure to mount the capacity setting adapter Faulty indoor unit PC board
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
The indoor unit PC board was replaced with a spare PC board.
NO
Replace the indoor unit PC board.
YES
The model concerned is needed to mount the capacity setting adapter at replacement of the PC board.
NO
Replace the indoor unit PC board.
YES Mount the capacity setting adapter.
Convenience Pack
85
Troubleshooting
Si81-503
4.3.10 Malfunction of Thermistors for Indoor Units Remote Controller Display
C4, C5, C9
Applicable Models
All indoor units
Methods of Malfunction Detection
Detect the malfunction according to temperatures detected with the thermistor for indoor units.
Malfunction Decision Conditions
When the thermistor for heat exchange has broken wires in it or is short-circuited while in operation
Supposed Causes
Faulty thermistor for heat exchanger and suction air thermistor Faulty connection of thermistor Faulty indoor unit PC board
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Check the connector for connection.
Normal? (*1)
NO
Connect properly.
YES Disconnect the thermistor from the indoor unit PC board and measure resistance with a multiple meter.
Normal? (*2)
NO
Replace the thermistor.
YES Replace the indoor unit PC board.
*1. Malfunction code and target thermistor Malfunction code C4 C5 C9
Target thermistor Heat exchanger liquid pipe thermistor Heat exchanger gas pipe thermistor Suction air thermistor
Electrical symbol R2T R3T R1T
*2. 3.56 Ω to 360 kΩ
86
Convenience Pack
Si81-503
Troubleshooting
4.3.11 Malfunction of Sensor on Remote Controller Remote Controller Display
CJ
Applicable Models
All indoor units
Methods of Malfunction Detection
Even if the malfunction occurs, the unit can run under the temperature control through the sensor of indoor unit suction air temperature. Detect the malfunction according to temperatures detected with the air temperature sensor on the remote controller.
Malfunction Decision Conditions
When the thermistor for air temperature on the remote controller has broken wires in it or is short-circuited while in operation
Supposed Causes
Faulty thermistor on the remote controller Faulty remote controller PC board
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Turn power supply OFF once and the ON again.
Is "CJ" displayed on the remote controller?
YES
Replace the remote controller.
NO External factor other than the defect in the sensor on remote controller (e.g. noise) is supposed to cause this trouble.
Convenience Pack
87
Troubleshooting
4.4
Si81-503
Flow Chart for Troubleshooting-Outdoor Unit System
4.4.1 Actuation of Protection Device Remote Controller Display
E0
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
The protection device input circuit detects the actuation of each individual protection device.
(Unified detection of each protection device) Detect the actuation of the external earth leakage circuit breaker on the control board when
the circuit breaker turns ON again. Malfunction Decision Conditions
Actuation of overcurrent relay for STD compressor
(Operating current: 13A) The earth leakage circuit breaker is actuated again (within 10 seconds) after the STD
compressor starts running when the external earth leakage circuit breaker turns ON again. Supposed Causes
Actuation of protection device on outdoor unit Faulty outdoor unit PC board (A1P or A2P) Instantaneous power failure Poor insulation in compressor motor Faulty earth leakage circuit breaker
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Are connectors of each protection device connected to the outdoor unit PC board?
NO
Connect the connector and then resume operation.
YES
Contacts of overcurrent relays (K2S or K3S) are open.
YES
NO
Grounding / short circuit of the STD compressor concerned
YES
Poor insulation in compressor * Check to be sure the compressor concerned while in service mode.
NO
The device operated normally when turning power supply ON again and resume operation.
Actuation of overcurrent relays in magnet switches for compressor Supposed causes 2Faulty compressor 2Abnormal power supply voltage 2Faulty magnet switch
YES
Instantaneous power failure occurred or the protection device was actuated before.
NO Replace the outdoor unit PC board. (A1P or A2P)
88
Convenience Pack
Si81-503
Troubleshooting
4.4.2 Faulty PC Board Assembly on Outdoor Unit Remote Controller Display
E1
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Microcomputer checks whether E2PROM is normal.
Malfunction Decision Conditions
The malfunction is decided if the E2PROM becomes faulty when turning power supply ON.
Supposed Causes
Faulty main PC board on outdoor unit
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Turn power supply OFF once and then ON again.
Is the system reset normally?
NO
YES
External factor other than the defect in the PC board assembly (e.g. noise) is supposed to cause this trouble. Replace the main PC board on outdoor unit.
Convenience Pack
89
Troubleshooting
Si81-503
4.4.3 Abnormal High Pressure Level Remote Controller Display
E3
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
The protection device circuit checks continuity in the high pressure switch.
Malfunction Decision Conditions
When the high pressure switch is actuated Operating pressure: 3.25MPa
Supposed Causes
90
Faulty high pressure switch Wire broken in high pressure switch harness Faulty connection of high pressure switch connector Dirty outdoor unit heat exchanger Faulty outdoor unit fan Refrigerant overcharged Failure to open the stop valve Faulty actuation of Y7S, Y8S
Convenience Pack
Si81-503
Troubleshooting
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Is the stop valve open?
NO
Open the stop valve.
YES Are high pressure switches (S1PH to S3PH) connected to the outdoor unit PC board?
NO
Connect properly.
YES Turn power supply OFF and stop the compressor for a period of 10 minutes. Then, check the following.
Is there continuity in the high pressure switches (S1PH to S3PH)?
NO
Replace high pressure switches with no continuity.
YES Turn ON power supply and resume operation.
Malfunction code "H3" is displayed.
YES
Replace the outdoor unit PC board.
NO
Malfunction code "E3" is displayed.
NO
Keep the system running.
YES
High pressure level is abnormally high.
NO
Convenience Pack
YES
Check to be sure the stain on the outdoor unit heat exchanger and over-charge of refrigerant. Replace the outdoor unit PC board.
91
Troubleshooting
Si81-503
4.4.4 Abnormal Low Pressure Level Remote Controller Display
E4
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Detect the malfunction according to pressures detected with the low pressure sensor. Detect the malfunction with low pressure switch
Malfunction Decision Conditions
When low pressure is kept at a level of 0.049MPa or less for 10 consecutive seconds while
Supposed Causes
92
the compressor is running When the low pressure switch actuated
Abnormal drop of low pressure to 0.049MPa or less Faulty low pressure sensor Replacement of PC board (A1P or A2P) Failure to open the stop valve
Convenience Pack
Si81-503
Troubleshooting
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Is the stop valve open?
NO
Open the stop valve.
YES Measure the voltage between and of the connector section for the low pressure sensor. (*1)
Is the voltage of the sensor - characteristics of pressure normal? (*2)
NO
Replace the low pressure sensor.
YES Check to be sure the AirNet data 30 minutes before the malfunction occurred.
Low pressure is 0.05MPa or less when the compressor stops due to malfunction.
NO
If the air conditioner is concerned, replace the sub PC board (A2P). If the refrigerator/freezer is concerned, replace the main PC board (A1P).
YES Set the OPERATION switch to ON again.
Malfunction code "E9" is displayed.
YES
Replace the coils of the electronic expansion valve.
NO Is the operating sound (i.e. tick tock) of the electronic expansion valve heard?
NO
Is the connection of coils of the electronic expansion valve normal?
NO
Connect properly.
YES Replace the main body of the electronic expansion valve. Is the sight glass sealed?
NO
Recharge refrigerant for sealing.
YES If the air conditioner is concerned, replace the sub PC board (A2P). If the refrigerating unit is concerned, replace the main PC board (A1P).
Convenience Pack
93
Troubleshooting
Si81-503
*1
Voltage measuring point PC board (A1P or A2P)
Connector for low pressure sensor (Blue) Red
Microcomputer A/D input
Black White
Low pressure sensor
+5V
Measure voltage (DC) between these pins.
*2
94
For the "Voltage Characteristics of Pressure Sensors", refer to information on page 206.
Convenience Pack
Si81-503
Troubleshooting
4.4.5 Inverter Compressor Motor Lock Remote Controller Display
E5
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Inverter PC board retrieves the position signals from UVWN line connected between the
inverter and compressor, and detects the position signal pattern. Detect the actuation of the external earth leakage circuit breaker on the control board when
the circuit breaker turns ON again. Malfunction Decision Conditions
The position signals with 3 times cycle as imposed frequency are detected when
Supposed Causes
Convenience Pack
compressor motor operates normally, but 2 times cycle when compressor motor locks. When the position signals in 2 times cycle are detected. The earth leakage circuit breaker is actuated again (within 10 seconds) after the inverter compressor starts running when the external earth leakage circuit breaker turns ON again. Inverter compressor lock Faulty electrical insulation of inverter compressor motor Incorrect UVWN wiring Faulty inverter PC board Faulty earth leakage breaker
95
Troubleshooting
Si81-503
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Is the UVWN wiring normal?
NO
Connect properly.
YES
* Grounding and short-circuit of the STD compressor concerned
YES
NO
The Inverter compressor operates normally when power supply is turned ON again.
YES
Poor insulation in compressor * Check to be sure the compressor concerned while in service mode.
Instantaneous power failure occurred or the protection device was actuated before.
NO
Are inverter output voltages the same for 3 phases?
NO
Replace the inverter PC board.
YES
Does low or high pressure vary even for a moment when restarting compressor?
YES
NO
Replace the compressor.
96
Convenience Pack
Si81-503
Troubleshooting
4.4.6 Malfunction of Fan Motor on Outdoor Unit Remote Controller Display
E7
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Malfunction of fan motor system is detected according to the fan speed detected with hall IC while the fan motor is in operation.
Malfunction Decision Conditions
When the fan runs at a speed less than a specified speed for a period of 15 seconds or more
Supposed Causes
Convenience Pack
under the fan motor running conditions When connector detecting fan speed is disconnected
Defective fan motor Failure to insert a harness and connector between the fan motor and the PC board The fan does not run due to the entanglement of foreign matters around the fan Clearing condition: Operate for a period of 1 minute (normal)
97
Troubleshooting
Si81-503
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
YESoff Connectors come from the fan motor.
YES
Insert the connector
NO
YES Is there any foreign matter around the fan?
YES
Remove the foreign matter.
NO
Can the fan be NO lightly rotated by hand?
NO
Replace the fan motor on the outdoor unit.
YES NO Is the fan concerned (*1) inspected or shortcircuited/grounded?
YES
Poor insulation in fan motor. Replace the fan motor.
Set the OPERATION switch to OFF and then turn OFF the power supply circuit breaker. After that, turn ON the power supply circuit breaker again and then set the OPERATION switch to ON.
NO The fan concerned operates normally.
YES
NO Interchange X1A and 2A on A3P and X1A and X2A on A4P and then operate the fan.
Only the fan on the same YES side before interchanging runs.
YES
Since instantaneous power failure occurred or the protection device was actuated before, remove the cause of actuation of the protection device.
Replace the fan motor.
NO Replace the PC board for fan drive use, A3P or A4P.
*1 Check to be sure the fan concerned while in service mode.
98
Convenience Pack
Si81-503
Troubleshooting
4.4.7 Malfunction of Electronic Expansion Valve Remote Controller Display
E9
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Check the connector for disconnection. Check the coil of the electronic expansion valve for continuity.
Malfunction Decision Conditions
The malfunction is decided if no common power is supplied when turning power supply ON.
Supposed Causes
Faulty electronic expansion valve Broken wires in the harness of the electronic expansion valve Faulty connection of connector to the electronic expansion valve External factor (e.g. noise) Faulty outdoor unit PC board (A1P or A2P)
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Turn power supply OFF once and then ON again.
YES
Is the system reset normally?
External factor other than the defect in the electronic expansion valve (e.g. noise) is supposed to cause this trouble.
NO Are the coils of the electronic expansion valve connected to the outdoor unit PC boards (A1P, A2P)? YES
NO
Connect properly.
Is the coil resistance of the electronic expansion valve normal (40 to 50Ω)? (* )
NO
Replace the coil of the electronic expansion valve.
YES Replace the main PC board.
*
Measure the resistance between pins of the connector, and make sure the resistance falls in the range of 40 to 50Ω. 1 2 3 4 5
Convenience Pack
Measuring points 1–5 2–5 3–5 4–5
99
Troubleshooting
Si81-503
4.4.8 Malfunction of Freezing Remote Controller Display
EJ
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Detect through inputting no-voltage contact signal transmitted from the booster unit to the
Malfunction Decision Conditions
When the main PC board is short-circuited between A and C of X1A.
Supposed Causes
Determined malfunction of booster unit Erroneous wire connection Faulty main PC board
main PC board (A1P). Inverter box BRR2A1R
(
to short-circuit between A and C: ( Conditions · When the malfunction code (E1 to U4) of the booster unit block is determined
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Is the booster unit operating normally?
NO
To Troubleshooting of booster unit (on page 72)
YES
Is the connection wiring (between the outdoor unit and the booster) correct?
NO
Correct the connection wiring.
YES
Is the relay (K2R) in the inverter box BRR2A1R normal?
NO
Replace the relay.
YES
Are there any external factors (e.g. noises) other than failure?
NO
Remove external factors.
YES Replace the control PC board.
100
Convenience Pack
Si81-503
Troubleshooting
4.4.9 Abnormal Discharge Pipe Temperature Remote Controller Display
F3
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Detect the malfunction according to temperatures detected with the sensor for discharge pipe temperature.
Malfunction Decision Conditions
When the discharge pipe temperature rises to an abnormally high level When the discharge pipe temperature rises suddenly
Supposed Causes
(
Convenience Pack
(
· 135°C or more · 120°C or more: 15 seconds · 115°C or more: 90 seconds
Faulty discharge pipe thermistor Faulty connection of connector of discharge pipe thermistor Refrigerant shortage Faulty compressor Disconnection of discharge pipe temperature thermistor from piping Faulty outdoor unit PC board (A1P)
101
Troubleshooting
Si81-503
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Is the discharge pipe thermistor mounted to the discharge pipe?
NO
Mount the thermistor and then resume operation again.
YES
Are the characteristics of the discharge pipe thermistor normal? (*1)
NO
Replace the discharge pipe thermistor.
YES
Check to be sure the AirNet data 30 minutes before the malfunction occurred.
Did the discharge pipe temperature exceed the malfunction decision conditions?
NO
YES
Does the current reach approximately 12A while the compressor is running?
YES
If the air conditioner is concerned, replace the sub PC board (A2P). If the refrigerator/freezer is concerned, replace the main PC board (A1P). Replace the compressor.
ON
Set the OPERATION switch to ON again.
Is the sight glass sealed?
NO
Recharge refrigerant until the sight glass is sealed.
YES
The refrigerant system has clogging.
YES
Remedy the clogging.
ON If the air conditioner is concerned, replace the sub PC board (A2P). If the refrigerator/freezer is concerned, replace the main PC board (A1P).
*1 For "Temperature & Resistance Characteristics of Thermistor", refer to information on page 205.
102
Convenience Pack
Si81-503
Troubleshooting
4.4.10 Malfunction of Three Sensors Remote Controller Display
H0
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Detect the malfunction according to values detected with the sensors shown below. 1. Outdoor air thermistor 2. Suction pipe thermistor 3. Discharge pipe thermistor 4. High pressure sensor 5. Low pressure sensor
Malfunction Decision Conditions
When three sensors out of the five sensors detect abnormal values
Supposed Causes
Convenience Pack
Faulty thermistor Faulty pressure sensor Faulty connection of connector Faulty main PC board (A1P)
103
Troubleshooting
Si81-503
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Check the history of malfunction codes on the remote controller or outdoor unit PC board. (*1) (This history can also be checked on AirNet.)
Check to be sure the connection of applicable sensor responding to the malfunction code.
The connection of the connector is normal.
NO
Connect properly.
YES
Measure the characteristic of the applicable sensor. (*2)
The characteristic of the sensor is normal.
NO
Replace the applicable sensor.
YES Replace the main PC board (A1P). (If any sensor is normal on the "JC" display, replace the PC board A2P.)
*1. Malfunction code and applicable sensor Malfunction code H9 J3 J5 JA JC
Applicable sensor Outdoor air thermistor Suction pipe thermistor Discharge pipe thermistor High pressure sensor Low pressure sensor
*2. For details on the characteristic of sensor, refer to information in the tables shown below. "Temperature & Resistance Characteristics of Thermistor" → p. 205 "Voltage Characteristics of Pressure Sensor" → p. 206
104
Convenience Pack
Si81-503
Troubleshooting
4.4.11 Faulty high pressure switch Remote Controller Display
H3
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Detect the continuity in the high pressure switch through the protection device circuit.
Malfunction Decision Conditions
When there is no continuity in the high pressure switch at the compressor stop.
Supposed Causes
Faulty high pressure switch Wire broken in high pressure switch harness Faulty connection of high pressure switch connector Faulty outdoor unit PC board Broken wires in lead wire
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Is the connector (X3A, X4A) for HPS protection properly connected to the outdoor unit PC board?
NO
Connect properly.
YES Conduct the next check when 10 minutes elapse after the compressors stops.
Does the high pressure switch have continuity?
NO
Replace the high pressure switch which has no continuity.
YES
Does the lead wire have continuity?
NO
Replace the lead wire.
YES Replace the outdoor unit PC board.
Convenience Pack
105
Troubleshooting
Si81-503
4.4.12 Faulty low pressure switch Remote Controller Display
H4
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Open contact side
Detect the malfunction through checking whether or not there is continuity in the low pressure switch.
Malfunction Decision Conditions
When there is no continuity in the low pressure switch at the startup of the compressor.
Supposed Causes
Faulty low pressure switch Wire broken in low pressure switch harness Faulty connection of low pressure switch connector Faulty outdoor unit PC board Insufficient amount of refrigerant Failure to open the stop valve Faulty electronic expansion valve Clogged check valve
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Is the connector of the low pressure switch properly connected to the outdoor unit PC board?
NO
Connect properly.
YES Conduct the next check when 10 minutes elapse after the compressors stops.
Does the low pressure switch have continuity?
NO
Replace the low pressure switch.
YES
Does the lead wire have continuity?
NO
Replace the lead wire.
YES Replace the outdoor unit PC board.
106
Convenience Pack
Si81-503
Troubleshooting
4.4.13 Abnormal Signal From Fan Motor on Outdoor Unit Remote Controller Display
H7
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Detect the malfunction according to abnormal signals from the fan motor.
Malfunction Decision Conditions
When abnormal signal is detected at the time when the fan motor starts running.
Supposed Causes
Abnormal signal from fan motor (defective circuit) Broken wires or short circuit in lead wire of fan motor, or connector disconnected Faulty inverter PC board
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Shut down power supply.
Is the connector (X2A) of the fan motor properly connected to the PC board?
NO
Connect properly.
YES Check the connector of the fan motor. (*1)
Is resistance balanced between lead wires Vcc and UVW and between GND and UVW, of the fan motor?
NO
YES
*1:
Replace the fan motor.
Replace the inverter PC board.
Disconnect the connector (X2A) from the motor and measure the following resistance. X2A
Convenience Pack
5 Gray
GND
4 Pink
Vcc
3 Orange
W
2 Blue
V
1 Yellow
U
Measure resistance between Vcc - UVW and GND - UVW, respectively.
107
Troubleshooting
Si81-503
4.4.14 Malfunction of Thermistor for Outdoor Air Remote Controller Display
H9,J3,J5
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Detect the malfunction according to temperatures detected with the thermistor for outdoor air. · Thermistor of outdoor air · Thermistor of discharge pipe · Thermistor of suction pipe
Malfunction Decision Conditions
When the thermistor has broken wires in it or is short-circuited while in operation
Supposed Causes
Faulty thermistor Faulty connection of connector Faulty main PC board
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Check the connection of the connector.
Normal?
NO
Connect properly.
YES
Pull out the thermistor from the main PC board and then measure resistance with a multi-tester.
Normal?
NO
Replace the thermistor.
YES Replace the main PC board.
∗ For "Temperature & Resistance Characteristics of Thermistor", refer to information on page 205. H9: Faulty thermistor of outdoor air J3: Faulty thermistor of discharge pipe J5: Faulty thermistor of suction pipe
108
Convenience Pack
Si81-503
Troubleshooting
4.4.15 Malfunction of Current Sensor Remote Controller Display
J2
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Detect the malfunction according to currents detected with the current sensor.
Malfunction Decision Conditions
When the current sensor has broken wires in it or is short-circuited while in operation
Supposed Causes
Faulty current sensor Faulty connection of connector Faulty wiring to compressor Faulty main PC board
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Is the connector for the current sensor properly connected?
NO
Connect properly.
YES
Is the current sensor mounted to the wire of the phase T?
NO
Properly mount the current sensor.
YES
There is continuity but no short circuit between the main PC board (X38A) and the current sensor PC board (X1A).
NO
Replace the current sensor connection wire.
YES
Replace the current sensor.
Is the malfunction reproduced?
YES
Replace the main PC board.
NO Continue running the system.
Convenience Pack
109
Troubleshooting
Si81-503
4.4.16 Malfunction of High Pressure Sensor Remote Controller Display
JA
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Detect the malfunction according to pressures detected with the high pressure sensor.
Malfunction Decision Conditions
When the high pressure sensor has broken wires in it or is short-circuited while in operation Normal range: 0.01 ∼ 3.38MPa
Supposed Causes
Faulty high pressure sensor Connection with low pressure sensor the other way Faulty main PC board (A1P) on outdoor unit
(
(
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
The connector (S1NPH) for high pressure sensor is connected to the main PC board (A1P) on the outdoor unit.
NO
Connect the high pressure sensor and then resume operation.
YES Measure the voltage between and of the connector section for the high pressure sensor. (*1)
NO
Does the voltage fall in the range of 0.5 to 4.0 V?
Replace the high pressure sensor.
YES Replace the outdoor unit main PC board (A1P).
*1
Voltage measuring point Main PC board on outdoor unit (A1P) Connector for high pressure sensor (Red) Red Black
Microcomputer A/D input
White
High pressure sensor
+5V
Measure voltage (DC) between these pins.
*2 110
For the "Voltage Characteristics of Pressure Sensors", refer to information on page 206. Convenience Pack
Si81-503
Troubleshooting
4.4.17 Malfunction of Low Pressure Sensor Remote Controller Display
JC
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Detect the malfunction according to pressures detected with the low pressure sensor.
Malfunction Decision Conditions
When the low pressure sensor has broken wires in it or is short-circuited while in operation Normal range: –0.01 ∼ +1.18MPa
Supposed Causes
Faulty low pressure sensor Connection with high pressure sensor the other way Faulty outdoor unit PC board (A1P or A2P)
(
(
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
The connector (X30A) for low pressure sensor is connected to the outdoor unit PC board (A1P, A2P).
NO
Connect the low pressure sensor and then resume operation.
YES Measure the voltage between and of the connector section for the low pressure sensor. (*1)
NO
Does the voltage fall in the range of 0.5 to 4.0 V?
Replace the low pressure sensor.
YES Replace the control PC board (A1P).
*1
Voltage measuring point Outdoor unit PC board (A1P or A2P) +5V
Red Black Microcomputer A/D input
White
Low pressure sensor
(Blue)
Measure voltage (DC) between these pins.
*2 Convenience Pack
For the "Voltage Characteristics of Pressure Sensors", refer to information on page 206. 111
Troubleshooting
Si81-503
4.4.18 Temperature Rise Inside Inverter Box Remote Controller Display
L3
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Detect temperatures inside the inverter box with thermistor.
Malfunction Decision Conditions
The thermal relay is activated when the temperature reaches 80°C or more.
Supposed Causes
Actuation of thermal relay for the inverter box (Actuated when the temperature reaches 80°C
or more) Faulty inverter PC board Faulty thermistor for inverter box
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
The temperature inside the inverter box has reached 80˚C or more.
YES
NO
Faulty radiation from power unit 2Clogged air inlet 2Dirty radiation fin 2High outdoor temperature
Measure resistance of the thermistor for the inverter box.
Is the resistance of the thermistor normal?
NO
Replace the inverter.
YES
Can the thermal relay be reset?
NO
Replace the inverter unit.
YES Reset and then run the system.
112
Convenience Pack
Si81-503
Troubleshooting
4.4.19 Rise of Radiation Fin Temperature Remote Controller Display
L4
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Detect the fin temperature with the thermistor for the radiation fin.
Malfunction Decision Conditions
When the radiation fin temperature excessively rises on the inverter due to faulty radiation
Supposed Causes
Actuation of fin thermal Faulty thermistor for radiation fin High outdoor temperature (including short circuit) Inadequate cooling of radiation fin on inverter Clogged air inlet Dirty radiation fin Faulty fan motor
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Is it supposed that the fin temperature was high? ∗Refer to detected value shown in table below.
YES
Remedy the cause.
NO
Check the LED on the main PC board (about whether or not the temperature inside fin is abnormal).
NO
Check the main PC board or remote controller.
YES
Is it possible to reset?
NO
YES
Refer to information on checking of "Fin thermistor" on page 124.
Reset
∗Detected value of radiation fin temperature Detect 94°C
Convenience Pack
Reset 80°C
113
Troubleshooting
Si81-503
4.4.20 Malfunction of INV Compressor Remote Controller Display
L5
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Detect the malfunction by converting current passing through the power transistor to voltage with CT1 (DC sensor).
Malfunction Decision Conditions
When an overcurrent (of DC 36A) passes through the power transistor (The power transistor is activated even when an instantaneous overcurrent passes through it.)
Supposed Causes
Power Transistor (On Inverter PC Board)
Judgement by continuity check using analogue tester. (1) Do not touch the charging part (High voltage) for 10 minutes after power cut. (2) In case of touching the charging part, make sure to check that the power supply voltage to power transistor is lower than 50 Volts. (3) Before checking, disconnect the electric wiring connected to the power transistor and compressor. (4) Follow the measurement as shown below procedure.
Faulty compressor coil (example: broken wire, poor insulation) Faulty startup of compressor (mechanical lock) Faulty inverter PC board Instantaneous fluctuations in power supply voltage Faulty compressor (if the compressor has damage to bearing) Failure to open stop valve
*In the case of continuity, the resistance must be the same for all phases. (Decision) If other than given above, the power unit is defective and must be replaced. Note:
114
If using a digital tester, ∞ and continuity may be reversed.
Convenience Pack
Si81-503
Troubleshooting
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Check the installation conditions.
Is the stop valve open?
NO
Open the stop valve.
YES
There are broken wires in the coil of the compressor or poor insulation.
YES
Replace the compressor.
NO Turn the main power supply OFF and then disconnect the inverter from the compressor.
Check the power transistor (IGBT) for continuity. The continuity is normal. *1
NO
Replace the inverter PC board.
YES
While unit in running with compressor lines disconnected, the inverter output voltages increase nearly at the same speed on each phase (*) (U-V, V-W, and W-U) YES
NO Replace the inverter PC * board. If the unit runs with compressor input line disconnected, the unit will stop due to malfunction after a lapse of five seconds. Therefore, check an increase in voltage for a period of the five seconds.
Check the power supply voltage.
There is an instantaneous power drop.
YES
Rectify the power supply.
NO Check the compressor for unusual sounds, vibrations, operating conditions, and others according to the diagnosis.
*1 Refer page 114 for detail.
Convenience Pack
115
Troubleshooting
Si81-503
4.4.21 Abnormal Current of Compressor Remote Controller Display
L8
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Detect the malfunction by converting current passing through the power transistor to voltage
Malfunction Decision Conditions
When an overload is detected on the compressor (except at startup) + Detected value through electronic thermal 16.5A × 5 seconds or 13A × 260 seconds
Supposed Causes
116
with CT1 (DC sensor). Detect fluctuations in position signal with the inverter PC board.
Overloaded compressor (in operation) Broken wire in compressor coil Faulty inverter PC board Faulty compressor (if the compressor has damage to bearing)
Convenience Pack
Si81-503
Troubleshooting
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Secondary currents on (for details, the inverter exceeds A YES refer to table shown below) in each phase.
H
YES
NO
*Judge malfunction from the AirNet data 30 minutes before the malfunction occurred to take countermeasures against it. · Take countermeasures against the high pressure drop. · Replace the compressor.
Turn the main power supply OFF and then disconnect the inverter from the compressor.
Check the power NO transistor (IGBT) for continuity. The continuity is normal. *1
NO
Replace the inverter PC board.
YES
While unit in running with compressor NO lines disconnected, the inverter output voltages increase nearly at the same speed on each phase (*) (U-V, V-W, and W-U) YES
NO * If the unit runs with compressor input line disconnected, the unit will stop due to malfunction after a lapse of five seconds. Therefore, check an increase in voltage for a period of the five seconds.
Replace the inverter PC board.
Check the compressor for unusual sounds, vibrations, operating conditions, and others according to the diagnosis.
+Detected value by electronic thermal Detected value 16.5A × 5 sec. or 13A × 260 sec.
* If this malfunction code occurs concurrently with "E5", "L5", "L9" or else, the compressor is most likely to be faulty. *1 Refer page 114 for detail.
Convenience Pack
117
Troubleshooting
Si81-503
4.4.22 Faulty Startup of Compressor Remote Controller Display
L9
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Detect the malfunction by converting current passing through the power transistor to voltage
Malfunction Decision Conditions
When an overload is detected on the compressor at startup When the position signals fluctuate
Supposed Causes
Faulty compressor (lock) Faulty inverter Failure to open stop valve
118
with CT1 (DC sensor). Detect fluctuations in position signal with the inverter PC board.
Convenience Pack
Si81-503
Troubleshooting
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Reset the power supply and then restart operation.
NO Is the operation normal?
YES
Keep the system running.
NO
Is the connection between NO the compressor and the terminal section normal?
NO
Connect the terminal section properly.
YES
Blowout of the capacitor on the inverter PC board
YES
Replace the inverter PC board.
NO
Secondary YES currents on the inverter exceeds 15A in each phase.
YES
NO
The compressor is overloaded. The compressor and refrigerant system should be checked.
Turn the main power supply OFF and then disconnect the inverter from the compressor.
Check the power transistor (IGBT) NO for continuity. The continuity is normal. *1 YES While unit in running with compressor NO lines disconnected, the inverter output voltages increase nearly at the same speed on each phase (*) (U-V, V-W, and W-U) YES
NO
NO * If the unit runs with compressor input line disconnected, the unit will stop due to malfunction after a lapse of five seconds. Therefore, check an increase in voltage for a period of the five seconds.
Replace the inverter PC board.
Replace the inverter PC board.
Check the compressor for unusual sounds, vibrations, operating conditions, and others according to the diagnosis.
*1 Refer page 114 for detail.
Convenience Pack
119
Troubleshooting
Si81-503
4.4.23 Malfunction of Transmission System (Between Inverter and Control PC Board) Remote Controller Display
LC
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Check transmission conditions between the inverter PC board and the main PC board using a microcomputer.
Malfunction Decision Conditions
When no normal transmission is conducted for a period of 1 minute or more.
Supposed Causes
120
Faulty connection between inverter PC board and main PC board Faulty main PC board (transmission section) Faulty inverter PC board Faulty noise filter External factor (example: noise)
Convenience Pack
Si81-503
Troubleshooting
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Are the inverter and fan driver PC boards surely connected to the main PC board? (*1)
NO
Connect the transmission wiring and then resume operation.
YES
The transmission wiring between the inverter and fan driver PC boards and the main PC board is broken.
YES
Rectify the broken wire and then resume operation.
NO
Is the microcomputer normal monitor (green) on the fan driver PC board blinking?
NO
YES
The microcomputer normal monitor (green) on the inverter PC board is blinking.
YES
Check power supply to the sub PC board. Check the connector for connection.
Replace the main PC board or inverter PC board.
NO
The voltage between red and white of the connector X1A on the inverter PC board is 400 V.
YES
NO
Replace the inverter PC board. ↓ If the malfunction is reproduced, replace the main PC board.
Check the noise filter (Z1F) for broken wires and the inverter unit for the wiring on the power supply side.
*1 Symbol on PC board Main PC board A1P
Convenience Pack
Inverter PC board A5P
Fan driver PC board A3P, A4P
121
Troubleshooting
Si81-503
4.4.24 Open Phase / Power Supply Imbalance Remote Controller Display
P1
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Detect according to the voltage waveform of main circuit capacitor incorporated in the inverter.
Malfunction Decision Conditions
When the aforementioned voltage waveform becomes identical with that at the power supply open phase
Supposed Causes
122
Open phase Voltage imbalance between phases Faulty main circuit capacitor Power unit (broken wire in diode module) Faulty control PC board Faulty K1M Improper main circuit wiring
Convenience Pack
Si81-503
Troubleshooting
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Check LED NOboard on the outdoor unit PC (open phase)
NO
Other factor than open phase/power supply imbalance
YES
Open phase ofYES power supply voltage
YES
Field factor
NO
There is significant voltage YES imbalance between phases.
(Note) Guideline: ±10V between phases, L1-L2, L2-L3, L3-L1
Field factor
NO Replace the MS, K1M.
NO Check the main circuit wiring. (Note) Check wiring between power supply and inverter for any faulty contact, broken wire, K1M deposited or fused.
YES
NO
Rectify the wiring.
YES
YES Faulty diode module (open, broken wire)
YES
Replace the power unit.
NO Faulty main PC board
Convenience Pack
123
Troubleshooting
Si81-503
4.4.25 Malfunction of Thermistor for Radiation Fin Remote Controller Display
P4
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Detect the malfunction according to temperatures detected with the thermistor for radiation fin.
Malfunction Decision Conditions
When the open or short circuit is detected on the radiator fin thermistor
Supposed Causes
Faulty thermistor for radiation fin Faulty inverter PC board
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Check the thermistor for radiation fin for resistance at an ambient temperature.
Normal? (*1)
NO
YES
Is it possible to be reset?
YES
NO
Replace the inverter PC board. Be noted that the fin thermistor cannot be replaced separately.
Replace the inverter PC board. * Continuous operation can be kept on.
Reset
*1
124
For "Temperature & Resistance Characteristics of Thermistor", refer to information on page 205.
Convenience Pack
Si81-503
Troubleshooting
4.4.26 Refrigerant shortage (malfunction) Remote Controller Display
U0
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Detect that the refrigerant shortage, according to the discharge pipe temperature.
Malfunction Decision Conditions
Judge and detect that the system refrigerant shortage using a microcomputer. + The malfunction is not decided, while retry is repeated.
&
· EV2 is fully open. (refrigerating unit) The indoor unit EV is set to 2000 pulse (cooling). The outdoor unit EV is set to 1480 pulse (heating). · 117˚C × 20 seconds OR · 115˚C × 120 seconds · 140˚C instantaneously
Supposed Causes
Failure to open stop valve Shortage of refrigerant Clogged refrigerant piping system
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
NO
Is the stop valve open?
Open the stop valve.
YES Is the amount of refrigerant appropriate? (Check the level through the sight glass.) Refer to information "Test operation" on installation manual.
NO
Set the amount of refrigerant to the proper level.
YES
F3 is displayed on AirNet.
NO
YES
Insulation of the compressor is proper.
NO
Replace the compressor.
YES
Has the nameplate burnt or come off?
YES
Replace the compressor.
NO Replace the discharge pipe thermistor.
+ Convenience Pack
Only an alarm is given, but system will not stop running. 125
Troubleshooting
Si81-503
4.4.27 Reverse Phase, Open Phase Remote Controller Display
U1
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Detect each phase through the reverse phase detection circuit and make judgment on correct phase or reverse phase.
Malfunction Decision Conditions
The malfunction is decided if the system has a reverse phase or open phase at the time of turning power supply ON.
Supposed Causes
Reverse-phase power supply Open-phase power supply Faulty control PC board (main PC board)
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
An open phase is found at the power supply terminal block (X1M) for the outdoor unit.
YES
Rectify the open phase. The filed power supply unit should be checked.
NO
By interchanging phases of the power supply line in 1 place, the system conducts normal operation. NO
YES
Reverse-phase power supply Countermeasure is completed by interchanging the phases. Replace the main PC board.
126
Convenience Pack
Si81-503
Troubleshooting
4.4.28 Abnormal Power Supply Voltage Remote Controller Display
U2
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Detect the voltage of main circuit capacitor incorporated in the inverter and the power supply voltage.
Malfunction Decision Conditions
When the DC voltage is 380 V or less
Supposed Causes
Abnormal power supply voltage Instantaneous power failure Open phase Faulty inverter PC board Faulty main PC board Faulty K1M Faulty wiring in main circuit
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Restart
The magnetic contactor (K1M) can turn ON. YES
NO
NO
Abnormal power supply is reproduced. YES
NO
YES
Replace the magnetic contactor (K1M).
NO Is the voltage between P-N terminals gradually rising to 556 VDC after turning ON?
While the compressor is running, the voltage between P-N terminals on the power unit is 380 VDC or more. YES
Is a voltage of 230V ±10% applied to the coil of K1M?
YES
Replace the inverter PC board.
NO Is a voltage of 230V applied to X1A on the inverter PC board? NO Is a voltage of 230V applied to X5A on the main PC board side of outdoor unit? YES
YES
NO
Replace the inverter PC board.
Replace the main PC board.
Check the transmission wiring between the main PC board and the inverter PC board. Make an offer to an electric power company for improvement of power supply.
Convenience Pack
127
Troubleshooting
Si81-503
4.4.29 Malfunction of Transmission (between Remote Controller and Indoor Unit) Remote Controller Display
U5
Applicable Models
All indoor units
Methods of Malfunction Detection
Use a microcomputer to check whether or not normal transmission is accomplished between the indoor unit and the remote controller.
Malfunction Decision Conditions
When no normal transmission is accomplished for a period of 2 minutes or more.
Supposed Causes
Malfunction of transmission between indoor unit and remote controller Connection of two Master remote controllers (when using two remote controllers) Faulty indoor unit PC board Faulty remote controller PC board Malfunction of transmission due to noise
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Two-remote-controller control
YES
NO
YES
Multi-core cables are used for the transmission wiring between indoor unit and the remote controller.
YES
NO
NO The microcomputer normal monitors on indoor unit PC board are all blinking.
On both remote controllers, the SS1 is set to "Main".
Turning power supply OFF once, the system returns to normal operation.
NO
Set either remote controller to "Sub" and turn power supply OFF once and then ON again to resume operation.
Replace the indoor unit PC board.
YES The malfunction may be caused by noise. Check around the system and then resume operation. YES
Change to 2-core, individual wiring.
NO Faulty remote controller PC board or faulty indoor unit PC board. Replace either PC board.
128
Convenience Pack
Si81-503
Troubleshooting
4.4.30 Malfunction of Transmission (between Main and Sub Remote Controller) Remote Controller Display
U8
Applicable Models
All indoor units
Methods of Malfunction Detection
In the case of two-remote-controller control, use a microcomputer to check whether or not normal transmission is accomplished between the indoor unit and the remote controller (between the Main and Sub remote controllers).
Malfunction Decision Conditions
When no normal transmission is accomplished for a period of 2 minutes or more.
Supposed Causes
Malfunction of transmission between Main and Sub remote controllers Connection of two Sub remote controllers Faulty remote controller PC board
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Two-remote-controller control
NO
YES
YES
On both remote controllers, the SS1 is set to "Sub". YES
SS1 on the remote controller PC board is set to "Main".
NO
NO
Set the SS1 to "Main". Turn power supply OFF once and then ON again to resume operation.
Turn power supply OFF once and then ON again to resume operation. If a malfunction occurs, replace the remote controller PC board. Set either remote controller to "Main". Turn power supply OFF once and the ON again to resume operation.
Convenience Pack
129
Troubleshooting
Si81-503
4.4.31 Malfunction of Transmission (between Indoor and Outdoor Units in a Same Single System) Remote Controller Display
U9
Applicable Models
All indoor units
Methods of Malfunction Detection
Detect the malfunction according to transmission from the indoor unit in a single system.
Malfunction Decision Conditions
When a failure occurs with the indoor unit in a single system
Supposed Causes
130
Malfunction of transmission between indoor and outdoor units in other systems Malfunction of electronic expansion valve in other systems Faulty indoor unit PC board in other systems Faulty connection of transmission wiring between indoor and outdoor units
Convenience Pack
Si81-503
Troubleshooting
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
2 minutes have elapsed since "U9" was displayed.
NO
Re-diagnose according to a display after a lapse of 2 minutes or more.
YES Run all indoor units.
The display "UA" is blinking on the remote controllers of other units in one and the same refrigerant system.
YES
Refer to troubleshooting for the malfunction code "UA".
NO The display "A1" is blinking on the remote controllers of other units in the same refrigerant system.
YES
Refer to troubleshooting for the malfunction code "A1".
NO The display "A9" is blinking on the remote controllers of other units in the same refrigerant system.
YES Refer to troubleshooting for the malfunction code "A9".
NO The display "U4" is blinking on the remote controllers of other units in the same refrigerant system. NO
Convenience Pack
YES
Refer to troubleshooting for the malfunction code "U4".
Refer to troubleshooting for the malfunction code "U5".
131
Troubleshooting
Si81-503
4.4.32 Improper Combination of Indoor and Outdoor Units Improper Combination of Indoor Unit and Remote Controller Remote Controller Display
UA
Applicable Models
Outdoor unit (LRYCP14DY1)
Methods of Malfunction Detection
Detect according to the number of indoor units connected.
Malfunction Decision Conditions
When the number of indoor units connected falls outside the permissible range
Supposed Causes
Excess of indoor units connected Faulty outdoor unit PC board
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
The number of indoor units connected to the same refrigerant system as that to which indoor units with "UA"displayed are connected does not exceed the permissible number of units.
NO
Since the number of indoor units in the same refrigerant system exceeds the permissible range, change the number.
YES Press and hold the WIRING CHECK button on the outdoor unit PC board for a period of 5 seconds or more.
Is the malfunction reproduced?
NO
Normal
YES Replace the main PC board on the outdoor unit.
+
132
The number of indoor units connectable to a single outdoor unit varies with the models of the outdoor units.
Convenience Pack
Si81-503
Troubleshooting
4.4.33 Address Duplication of Centralized Remote Controller Remote Controller Display
UC
Applicable Models
All indoor units
Methods of Malfunction Detection
Detect under address signals of centralized remote controller.
Malfunction Decision Conditions
When the same address as the centralized remote controller of the indoor unit concerned is detected on other indoor unit.
Supposed Causes
Address duplication of centralized remote controller Faulty indoor unit PC board
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Centralization-related equipment is connected to the indoor unit. NO
YES
Address duplication of centralized remote controller Settings should be changed so that no address duplication is caused. Replace the indoor unit PC board.
Convenience Pack
133
Troubleshooting
Si81-503
4.4.34 Malfunction of Transmission between Indoor Unit and Central Remote Controller Remote Controller Display
UE
Applicable Models
All indoor units Central remote controller
Methods of Malfunction Detection
Use a microcomputer to check whether or not normal transmission is accomplished between the indoor unit and the central remote controller.
Malfunction Decision Conditions
When no normal transmission is accomplished for a fixed period of time
Supposed Causes
134
Malfunction of transmission between centralized controller and indoor unit Disconnection of connector for settings of master controller Faulty PC board of central remote controller Faulty indoor unit PC board
Convenience Pack
Si81-503
Troubleshooting
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Has an indoor unit once connected been disconnected or changed in address?
YES
Reset power supplies to all central equipment simultaneously.
NO
Is power supply to indoor units with malfunction code displayed turned ON?
NO
Turn power supply to indoor unit ON.
YES
Are there any broken wires or wrong wire connections in transmission wiring?
NO
Fix the wiring properly.
YES
Is transmission with all indoor units malfunctioning?
NO
Is the setting of group No. of the malfunctioning indoor unit made?
NO
Make setting of the group No. properly.
YES
YES
Replace the indoor unit PC board. Are there any broken wires or wrong wire connections in transmission wiring with the master controller?
NO
Fix the wiring properly.
YES
Is the connector for master NO control settings on the master controller disconnected?
Connect the connector properly.
YES
Replace the central PC board.
Convenience Pack
135
Troubleshooting
Si81-503
4.4.35 System is not Set yet Remote Controller Display
UF
Applicable Models
Outdoor unit (LRYCP14DY1) All indoor units
Methods of Malfunction Detection
Detect through the operation for checking wrong wiring connections.
Malfunction Decision Conditions
When the number of indoor units by transmission mismatches with that after the temperature changes
Supposed Causes
Wrong connection of indoor-outdoor or outdoor-outdoor transmission wiring Failure in operation for checking wrong wiring connections Faulty indoor unit PC board Failure to open stop valve
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Is the stop valve open?
NO
Open the stop valve.
YES
Was the operation for checking wrong wiring connections conducted?
NO
YES Is the indoor-outdoor or outdoor-outdoor transmission wiring normal? YES
Is the indoor-outdoor or outdoor-outdoor transmission wiring normal?
YES
Replace the indoor unit PC board.
NO
NO
After rectifying wrong wiring, press and hold the RESET button (BS5) on the outdoor unit PC board for a period of 5 seconds. * The unit does not run for a maximum period of 12 minutes. The judgment according to the operation for checking wrong wiring connections may have been failed.
Conduct the operation for checking wrong wiring connections after the outdoor unit stops running for a period of 12 hours or more or all indoor unit connected run in FAN mode for a period of 1 hour or more, which, if not heeded, may result in wrong judgment.
136
Convenience Pack
Si81-503
Troubleshooting
4.4.36 Faulty System Line Remote Controller Display
UH
Applicable Models
Outdoor unit (LRYCP14DY1) All indoor units
Methods of Malfunction Detection
Detect under address signals.
Malfunction Decision Conditions
When the address settings are not made yet
Supposed Causes
Wrong connection of indoor-outdoor or outdoor-outdoor transmission wiring Faulty indoor unit PC board Faulty outdoor unit PC board
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Does this malfunction occur when the indoor and outdoor units are energized for the first time after installation or the replacement of indoor unit or outdoor unit PC board?
YES
NO
Is the indoor-outdoor or outdoor-outdoor transmission wiring normal? (*1)
NO
Normal
YES
NO
YES Press and hold the RESET button (BS5) for a period of 5 seconds.
Is the malfunction reproduced?
Is the malfunction reproduced when 12 minutes elapsed after the indoor and outdoor units were energized?
NO
After rectifying wrong wiring, press and hold the RESET button (BS5) on the outdoor unit PC board for a period of 5 seconds. * The unit does not run for a maximum period of 12 minutes.
Normal
YES Does the malfunction "UH" occur on all indoor units in the system?
NO
Replace the indoor unit PC board.
YES Replace the main PC board on the outdoor unit.
*1 Convenience Pack
For details on proper "Indoor-Outdoor transmission wiring" and "Outdoor-Outdoor transmission wiring", refer to information in the Installation Manual. 137
Troubleshooting
4.5
Si81-503
Flow Chart for Troubleshooting-Booster Unit System
4.5.1 Faulty PC Board Remote Controller Display
E1
Outdoor Unit LED Display
A5
Applicable Models
LCBKP1AR BRR2A1R
Methods of Malfunction Detection
Microcomputer checks whether E2PROM is normal.
Malfunction Decision Conditions
The malfunction is decided if the E2PROM becomes faulty when turning power supply to E2PROM ON.
Supposed Causes
Faulty outdoor unit PC board
14
27
34
44
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Turn power supply OFF once and then ON again.
Is the system reset normally?
NO
YES
External factor other than the failure in the PC board (example: noise) is supposed to cause this trouble.
Replace the control PC board.
138
Convenience Pack
Si81-503
Troubleshooting
4.5.2 Actuation of HPS Remote Controller Display
E3
Outdoor Unit LED Display
A5
Applicable Models
LCBKP1AR BRR2A1R
Methods of Malfunction Detection
Detect the continuity in the high pressure switch through the protection device circuit.
Malfunction Decision Conditions
Operating pressure when the high pressure switch is actuated: 1.8MPa
Supposed Causes
17
27
37
44
Faulty high pressure switch Broken lead wire in high pressure switch Faulty connection of high pressure switch connector Failure to open the stop valve
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Is the stop valve open? (e.g. Stop valve on the booster discharge side and the suction stop valve of the outdoor unit)
NO
Open the stop valve.
YES
Are the connector (X60A) and the terminal block (X2M (H-H)) on the PC board (A2P) of the inverter box connected?
YES
Connect properly.
NO Turn OFF power supply to stop the compressor for a period of 10 minutes. And then, conduct the next check.
Does the high pressure switch (S1PH) have continuity?
YES
Replace the high pressure switch.
NO Replace the inverter box PC board (A2P).
Convenience Pack
139
Troubleshooting
Si81-503
4.5.3 Compressor Lock Remote Controller Display
E5
Outdoor Unit LED Display
A5
Applicable Models
LCBKP1AR BRR2A1R
Methods of Malfunction Detection
Inverter PC board retrieves the position signals from UVWN line connected between the inverter and compressor, and detects the position signal pattern.
Malfunction Decision Conditions
The position signals with 3 times cycle as high as imposed frequency are detected when compressor motor operates normally, but the signals become 2 times cycle when compressor motor locks. When the position signals in 2 times cycle are detected.
Supposed Causes
140
14
27
37
47
Compressor lock High differential pressure (0.5MPa or more) Incorrect UVWN wiring Faulty inverter PC board Failure to open the stop valve and ball valve
Convenience Pack
Si81-503
Troubleshooting
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Check the installation conditions.
Are the stop valve and ball valve open?
NO
Open the stop valve and ball valve.
YES
Is the UVWN wiring normal?
NO
Connect properly.
YES
Is high differential pressure starting? (0.5MPa or more)
YES
Remedy the cause.
NO Check and see whether compressor is short-circuited or grounded.
YES
Replace the compressor.
NO
Are inverter output voltages the same for 3 phases?
NO
Replace the inverter PC board.
YES Does low or high pressure vary even for a moment when restarting compressor?
YES
NO Replace the compressor.
Convenience Pack
141
Troubleshooting
Si81-503
4.5.4 Rise of Radiation Fin Temperature Remote Controller Display
L4
Outdoor Unit LED Display
A5
Applicable Models
LCBKP1AR BRR2A1R
Methods of Malfunction Detection
Detect the fin temperature with the thermistor for the radiation fin.
Malfunction Decision Conditions
When the radiation fin temperature excessively rises on the inverter due to faulty radiation
Supposed Causes
14
24
37
44
Actuation of fin thermal Faulty thermistor for radiation fin High outdoor temperature (including short circuit) Inadequate cooling of radiation fin on inverter Clogged air inlet Dirty radiation fin
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Is it supposed that the fin temperature was high? * Refer to detected value shown in table below. NO
Check the LED on the inverter box (about whether or not the fin temperature is abnormal).
YES
NO
Remedy the cause.
Check the outdoor unit PC board.
YES
Is it possible to reset?
NO
YES
Refer to information on malfunction of thermistor for radiation fin on the outdoor unit PC board.
Reset
*Detected value of radiation fin temperature Detect 85.0°C
142
Reset 65.0°C
Convenience Pack
Si81-503
Troubleshooting
4.5.5 Instantaneous Overcurrent of Inverter Compressor Remote Controller Display
L5
Outdoor Unit LED Display
A5
Applicable Models
LCBKP1AR BRR2A1R
Methods of Malfunction Detection
Detect the malfunction by converting current passing through the power transistor to voltage with CT1 (DC sensor).
Malfunction Decision Conditions
When an overcurrent passes through the power transistor (The power transistor is activated even when an instantaneous overcurrent passes through it.) Detected value of instantaneous overcurrent: 29 A
Supposed Causes
Convenience Pack
17
24
37
44
Faulty compressor coil (example: broken wire, poor insulation) Faulty startup of compressor (mechanical lock) Faulty inverter Instantaneous fluctuations in power supply voltage Faulty compressor (if the compressor has damage to bearing) Failure to open stop valve and ball valve
143
Troubleshooting
Si81-503
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Check the installation conditions.
NO Are the stop valve open?
NO
Open the stop valve.
YES There are YEScoil of broken wires in the motor the compressor or poor insulation.
YES
Replace the compressor.
NO Turn the main power supply OFF and then disconnect the inverter from the compressor.
Check the power transistor (IGBT) NO for continuity. The continuity is normal. *1
NO
Replace the inverter PC board.
YES
While unit in running with compressor NOinverter lines disconnected, the output voltages increase nearly at the same speed on each phase (*) (U-V, V-W, and W-U) YES
NO * If the unit runs with compressor input line disconnected, the unit will stop due to malfunction after a lapse of five seconds. Therefore, check an increase in voltage for a period of the five seconds.
Replace the inverter PC board.
Check the power supply voltage.
There YES is an instantaneous power drop.
YES
Rectify the power supply.
NO Check the compressor for unusual sounds, vibrations, operating conditions, and others according to the diagnosis.
*1 Refer page 114 for detail.
144
Convenience Pack
Si81-503
Troubleshooting
4.5.6 Electronic Thermal (Time Lag) Remote Controller Display
L8
Outdoor Unit LED Display
A5
Applicable Models
LCBKP1AR BRR2A1R
Methods of Malfunction Detection
Detect the malfunction by converting current passing through the power transistor to voltage with CT1 (DC sensor). Detect fluctuations in position signal with the inverter PC board.
Malfunction Decision Conditions
When an overload is detected on the compressor (except at startup) Detected value: 10.5 A
Supposed Causes
17
24
34
44
Overloaded compressor (while in operation) Broken wire in compressor motor coil Faulty inverter Faulty compressor (if the compressor has damage to bearing)
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Secondary currents on the inverter YES refer exceeds 10.5A (for details, to table shown below) in each phase.
YES
The compressor is overloaded. The compressor and refrigerant system should be checked.
NO Turn the main power supply OFF and then disconnect the inverter from the compressor.
Check the power transistorNO (IGBT) for continuity. The continuity is normal. *1 YES While unit in running with compressor NO wires disconnected, the inverter output voltages increase nearly at the same speed on each phase (*) (U-V, V-W, and W-U) YES
NO
Replace the inverter PC board.
NO Replace the inverter PC * board. If the unit runs with compressor input line disconnected, the unit will stop due to malfunction after a lapse of 5 seconds. Therefore, check an increase in voltage for a period of the 5 seconds. Check the compressor for unusual sounds, vibrations, operating conditions, and others according to the diagnosis.
*1 Refer page 114 for detail. Convenience Pack
145
Troubleshooting
Si81-503
4.5.7 Faulty Startup of Inverter Compressor Remote Controller Display
L9
Outdoor Unit LED Display
A5
Applicable Models
LCBKP1AR BRR2A1R
Methods of Malfunction Detection
Detect the malfunction by converting current passing through the power transistor to voltage with CT1 (DC sensor). Detect fluctuations in position signal with the inverter PC board.
Malfunction Decision Conditions
When an overload is detected on the compressor at startup When the position signals fluctuate
Supposed Causes
146
14
24
34
44
Faulty compressor (lock) Startup with differential pressure Faulty inverter Failure to open stop valve Startup with inverse differential pressure
Convenience Pack
Si81-503
Troubleshooting
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Check the installation conditions.
Are the stop valve and ball valve open?
NO
Open the stop valve and ball valve.
YES The difference between high pressure and low pressure before startup is within 0.2MPa.
NO
Faulty pressure equalization Check the refrigerant system.
YES Secondary-side currents on the inverter are 16.0 A or more in each phase.
YES
NO
The compressor is overloaded. The compressor and refrigerant system should be checked.
Turn the main power supply OFF and then disconnect the inverter from the compressor.
Check the power transistor (IGBT) for continuity. The continuity is normal. *1 YES While unit in running with compressor wires disconnected, the inverter output voltages increase nearly at the same speed on each phase (*) (U-V, V-W, and W-U) YES
NO
Replace the inverter PC board.
NO Replace the inverter PC * board. If the unit runs with compressor input line disconnected, the unit will stop due to malfunction after a lapse of five seconds. Therefore, check an increase in voltage for a period of the five seconds. Check the compressor Diagnosis of compressor such as unusual sounds, vibrations, operating conditions, and others Check the showcases Are the expansion valves for showcases normal? [Equalizer pipe/Feeler bulb]
*1 Refer page 114 for detail.
Convenience Pack
147
Troubleshooting
Si81-503
4.5.8 Malfunction of Transmission System (between Control PC Board and Inverter PC Board) Remote Controller Display
LC
Outdoor Unit LED Display
A5
Applicable Models
LCBKP1AR BRR2A1R
Methods of Malfunction Detection
Check whether or not normal transmission is conducted between the control PC board and the inverter PC board.
Malfunction Decision Conditions
When no normal transmission is conducted for a fixed period of time.
Supposed Causes
Faulty connection of transmission wiring between control PC board and inverter PC board Faulty control PC board, inverter PC board External factor (example: noise)
14
24
34
47
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Conduct the following checks on the PC board in the inverter box. Are the X3A on the control PC board and the X205A on the inverter PC board positively connected each other?
NO
Connect the transmission wiring and then resume operation.
YES The transmission wiring between the control and inverter PC boards is broken.
YES
Rectify the broken wire and then resume operation.
NO The microcomputer normal monitor (green) on the inverter PC board is blinking.
NO
Replace the inverter PC board.
YES The microcomputer normal LED on the control PC board is blinking.
NO
Replace the control PC board.
YES Check the transmission wiring for faulty connection of connector and clamp with high voltage line.
148
Convenience Pack
Si81-503
Troubleshooting
4.5.9 Malfunction of Thermistor for PC Board Remote Controller Display
P3
Outdoor Unit LED Display
A5
Applicable Models
LCBKP1AR BRR2A1R
Methods of Malfunction Detection
Detect open or short-circuited temperature sensor
Malfunction Decision Conditions
When the open or short-circuited temperature sensor is detected
Supposed Causes
Faulty sensor Faulty inverter
17
24
34
47
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
The LED display on the outdoor unit PC board is as shown in heading above.
NO
Other factor
YES
Is it possible to be reset?
NO
Faulty inverter
YES
Reset
Convenience Pack
149
Troubleshooting
Si81-503
4.5.10 Malfunction of Thermistor for Radiation Fin Remote Controller Display
P4
Outdoor Unit LED Display
A5
Applicable Models
LCBKP1AR BRR2A1R
Methods of Malfunction Detection
Detect the malfunction according to temperatures detected with the thermistor for radiation fin.
Malfunction Decision Conditions
When open or short-circuited thermistor for radiation fin is detected while the compressor stops running
Supposed Causes
Faulty thermistor (radiation fin sensor) Faulty outdoor unit PC board
14
27
34
47
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Check the LED on the outdoor unit PC board.
Does the temperature sensor for radiation fin malfunction?
NO
Other factor
YES Disconnect the connector from X207A on the inverter PC board and then check resistance when the temperature sensor reads an ambient temperature.
Normal? (See Note)
NO
Replace the thermistor.
YES
Is it possible to be reset?
NO
Replace the inverter PC board.
YES Reset
+Note; For "Temperature & Resistance Characteristics of Thermistor", refer to information on
page 205.
150
Convenience Pack
Si81-503
Troubleshooting
4.5.11 Faulty Capacity Setting Remote Controller Display
PJ
Outdoor Unit LED Display
A5
Applicable Models
LCBKP1AR BRR2A1R
Methods of Malfunction Detection
Check whether set value (factory setting) written into E2PROM is equal to the outdoor unit capacity.
Malfunction Decision Conditions
When a PC board other than that for applicable model is mounted
Supposed Causes
Faulty control PC board Improper inverter PC board mounted Improper control PC board mounted
17
27
34
47
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Is proper control PC board or inverter PC board used?
NO
Replace by a proper PC board.
YES
Replace the inverter PC board.
Convenience Pack
151
Troubleshooting
Si81-503
4.5.12 Refrigerant Shortage Remote Controller Display
U0
Outdoor Unit LED Display
A5
Applicable Models
LCBKP1AR BRR2A1R
14
24
37
47
Methods of Malfunction Detection Judge and detect that the system refrigerant shortage, using a microcomputer.
Malfunction Decision Conditions
Pressing the CHECK button on the remote controller provided in the AirNet kit will display
Supposed Causes
Refrigerant shortage Clogged refrigerant piping system
this malfunction code "U0".
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Is the refrigerant quantity appropriate?
NO
YES
Recover refrigerant. After vacuum drying, refill an appropriate quantity of refrigerant.
Check the refrigerant piping system for clogging.
Is the ball valve open?
NO
Open the ball valve.
YES
Have 5 minutes elapsed after the outdoor unit started running? YES
NO
After a lapse of 5 minutes, turn power supply to the freezer showcase and inverter box (booster unit) ON.
Replace the PC board.
152
Convenience Pack
Si81-503
Troubleshooting
4.5.13 Abnormal Power Supply Voltage Remote Controller Display
U2
Outdoor Unit LED Display
A5
Applicable Models
LCBKP1AR BRR2A1R
Methods of Malfunction Detection
Detect the abnormality according to the voltage of main circuit capacitor incorporated in the inverter and the power supply voltage.
Malfunction Decision Conditions
When the voltage of main circuit capacitor incorporated in the inverter and the power supply voltage drops (150 to 170 VAC)
Supposed Causes
Convenience Pack
14
27
37
44
Power supply voltage drop (to 180 V or less) Instantaneous power failure Open phase (phase T) Faulty wiring in main circuit Faulty outdoor unit PC board Damaged part in main circuit
153
Troubleshooting
Si81-503
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Check the LED on the outdoor unit PC board. (Inadequate voltage?)
NO
Other factor
YES Does the power supply voltage fall in the range of (AC380 or 400 or 415V) ±10%?
NO
Field factor
YES Does the secondary voltage of transformer in the inverter box fall in the range of AC200V ±10%?
NO
YES
YES Are wire connections proper?
Is the setting of transformer correct?
NO
NO
Correct the setting.
Replace the transformer. Conduct wire connections properly.
YES While the compressor isYES running, measure the voltage between P and N of power module or between + and – of electrolytic capacitor.
Is the measured voltage 220 VDC or more?
YES
Monitor voltage. (Instantaneous voltage drop)
NO Replace the inverter PC board.
154
Convenience Pack
Si81-503
Troubleshooting
4.5.14 Malfunction of Transmission on AirNet System Remote Controller Display
U4
Outdoor Unit LED Display
A5
Applicable Models
LCBKP1AR BRR2A1R
Methods of Malfunction Detection
Check whether or not normal transmission is conducted between the indoor and outdoor units using a microcomputer.
Malfunction Decision Conditions
When no normal transmission is conducted for a period of approx. 10 minutes
Supposed Causes
Convenience Pack
17
24
37
47
Faulty connection of transmission wiring between indoor and outdoor units External factor (example: noise) Open phase in power supply Faulty indoor unit PC board Faulty outdoor unit PC board
155
Troubleshooting
Si81-503
Troubleshooting Conduct the following checks on the PC board in the AirNet kit.
LED A = Blinking?
NO (ON of OFF)
Check the YES microcomputer normal LED A on the PC board provided in the AirNet kit.
Turn power supply OFF once and then ON again.
LED A = Blinking?
NO
Faulty PC board in the AirNet kit or malfunction in power supply system
YES
LED B = Blinking?
Check the YES transmission malfunction indicating LED B on the PC board provided in the AirNet kit.
NO
LED B = ON?
YES
The system is reset to normal state. External factor (example: noise) is supposed to cause the malfunction. Faulty PC board in the AirNet kit
NO (OFF)
NO
Is the microcomputer normal LED A blinking? YES
To outdoor unit (on the following page)
156
YES
Is the transmission wiring between the indoor and outdoor units connected properly?
NO
Connect properly.
Convenience Pack
Si81-503
Troubleshooting
Conduct the following checks on the PC board in the AirNet kit.
LED A = Blinking?
Check the microcomputer normal LED A on the outdoor unit PC board.
YES
NO (ON of OFF)
Turn power supply OFF once and then ON again.
LED A = Blinking?
YES
NO
LED A = ON?
YES
The system is reset to normal state. External factor (example: noise) is supposed to cause the malfunction.
Faulty outdoor unit PC board
NO (OFF) Turn power supply OFF, disconnect No. 2 line in the indoor-outdoor transmission wiring, and then turn power supply ON again.
LED A = Blinking?
YES
Faulty PC board in the AirNet kit
NO Malfunction in power supply system YES Normally LED display
Faulty PC board in the AirNet kit
NO
The system is reset to normal state. External factor (example: noise) is supposed to cause the malfunction.
Convenience Pack
157
Troubleshooting
4.6
Si81-503
Troubleshooting by RAM Monitor Using the RAM monitor makes it possible to check the following operating data. Use this monitor for troubleshooting.
SP_No. Ver
SP number Version of software (Used for updating the software fpr PC board)
[MAIN] Operation_SW Mode Abnormal Code
OPERATION switch Operation mode Malfunction code which was detected on the outdoor unit Make the malfunction code corresponding to that displayed on the remote controller by reading the codes as the following: · Upper code: 3→E, 4→H, 5→F, 6→J, 7→L, 8→P, 9→U · Lower code: Numerical code as it stands (Examples) Code "33"→E3 (Malfunction code: Abnormal high pressure level) Code "7C" →LC (Malfunction code: Malfunction of transmission system)
Power Supply Transmission
158
Normal when 5 or 9 is displayed Normal when 17 is displayed (If the numerical codes as listed above are not displayed after the power supply is turned ON (for a period of approx. 10 minutes), the wiring between the indoor and outdoor units is supposed to be faulty.→ Take countermeasures against the faulty wiring, referring to malfunction code displayed on the remote controller and others.
Convenience Pack
Si81-503
Troubleshooting
[Sensor] Amb. temp. Dis. temp1. Dis. temp2. Suc. Temp1. Suc. Temp2. HP LP1 LP2 INV. Temp
Outdoor temperature Discharge pipe temperature 1 Discharge pipe temperature 2 Suction pipe temperature 1 Suction pipe temperature 2 High pressure Low pressure 1 Low pressure 2 Fin temperature of INV PC board
[Act_Bit] SV0 SV1 SV2 SV3 SV4 SV5 SV6 SV7 SV8 SV9 SV10 20s1 20s2 20s3 R1 R2 52ci 52c1 52c2
Y6S output Y1S output Y2S output Y3S output Y4S output Y5S output Nonuse (refrigerant charge) Nonuse (heat exchanger for subcooling) Nonuse (water solenoid valve) Y7S output Y8S output Y1R output Y2R output Y3R output R1 (refrigerating) output R2 (freezer) output M1C inverter output M2C compressor output M3C compressor output
[Actuator] EV1 EV2 FanSp InvHz Fan1Now Fan2Now
Pulse of Y1E Pulse of Y2E Fan step Operating frequency of M1C Present revolution speed of M1F Present revolution speed of M2F
[Abnormal] INV_Error NON1_Error NON2_Error FAN1_Error FAN2_Error FreezerError
Convenience Pack
M1C malfunction (normal : 0, malfunction : 1) M2C malfunction (normal : 0, malfunction : 1) M3C malfunction (normal : 0, malfunction : 1) M1F malfunction (normal : 0, malfunction : 1) M2F malfunction (normal : 0, malfunction : 1) Freezer (booster unit) malfunction (normal : 0, malfunction : 1)
159
Troubleshooting
Si81-503
[RetryCount] F1_DC F2_NON1 F3_NON2 F4_Hp F5_Lp1 F6_Lp2 F7_OC1 F8_OC2 F9_DC_Lock F10_DC_Stole F11_DC_Thermal F12_DC_OC F13_DC_UnderV F14_DC_Fin F17_UMB.Power F21_Fan1.Lock F22_Fan1.Error F23_Fan1.OC F24_Fan2.Lock F25_Fan2.Error F26_Fan2.OC
Retry of M1C discharge pipe temperature (Number of times) Retry of M2C discharge pipe temperature (Number of times) Retry of M3C discharge pipe temperature (Number of times) Retry of high pressure protection (Number of times) Retry of Lp1 low pressure protection (Number of times) Retry of Lp2 low pressure protection (Number of times) Retry of M2C OC actuation (Number of times) Retry of M3C OC actuation (Number of times) Retry of M1C lock (Number of times) Retry of M1C failure in startup and position signal malfunction (Number of times) Retry of M1C overcurrent (Number of times) Retry of M1C momentary overcurrent (Number of times) Retry of M1C under voltage (Number of times) Retry of rise in temperature of INV compressor fin (Number of times) Retry of power supply voltage unbalance Retry of M1F fan lock (Number of times) Retry of M1F location signal malfunction (Number of times) Retry of M1F momentary overcurrent (Number of times) Retry of M2F fan lock (Number of times) Retry of M2F location signal malfunction (Number of times) Retry of M2F momentary overcurrent (Number of times)
[Indoor_Data] Connect. Num Running. Num MaxTH3_Ton Set-Tr MinTr_Ton
Number of connectable indoor units Number of indoor units with thermostat ON Maximum TH3 among indoor units with thermostat ON Set temperature - suction temperature Minimum suction temperature among indoor units with thermostat ON
[Indoor_EV] Main. PLS
EV impulse of indoor unit
[Current_Data] Inv2nd. Amp. NON1. Amp. NON2. Amp. Fan1_2nd. Amp. Fan2_2nd. Amp.
160
Current on the secondary side of INV compressor NON1 current NON2 current M1F secondary current M2F secondary current
Convenience Pack
Si81-503
4.7
Troubleshooting
Troubleshooting by ST Controller
4.7.1 Troubleshooting on Defrost Control Board A. Check Points at Malfunction Screen display on ST controller
On the Screen 1 for display of icons, malfunctions are displayed by changing the color of icons. While in normal operation When a malfunction occurs in transmission
Green (in any operation other than defrost) Red (in defrost operation) Blue
Icons displayed in blue are appropriate to malfunctions on the Defrost control board.
Convenience Pack
161
Troubleshooting
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LED display on PC board
1. LED displaying "Microcomputer Normal / Malfunction in Transmission over DIII-NET Network This LED displays the operating conditions of the microcomputer and malfunctions in transmission over the DIII-NET. Conditions
Microcomputer normal
LED's operation pattern
ON
BLINK Repetition of ON-OFF
ON
OFF
OFF
0.4s
Microcomputer malfunction
0.4s
0.4s
0.4s
ON
Continuous ON or Continuous OFF
Malfunction in transmission over BLINK DIII-NET and of Malfunction due to Repetition ON-OFF 4 times address duplication
OFF
or OFF
ON OFF
ON OFF
ON OFF
ON OFF
OFF
0.2s 0.2s 0.2s 0.2s 0.2s 0.2s 0.2s
1s
2. LED displaying faulty setting This LED displays malfunctions to prevent wrong operation due to faulty settings. The LED alerts to the wrong setting of DIII-NET address to “8-15 or more”. Conditions
LED's operation pattern
Normal
Continuous OFF
Malfunction
BLINK Repetition of ON-OFF
OFF
OFF
ON
0.4s
162
OFF
0.4s
ON
0.4s
OFF
0.4s
Convenience Pack
Si81-503
Troubleshooting
B. Flow Chart for Troubleshooting 1. Malfunction in transmission over DIII-NET Applicable Models
Defrost control board ST controller
Methods of Malfunction Detection
Detect malfunctions according to screen displays on the ST controller and the conditions of LED on the PC board provided in the Defrost control board.
Malfunction Decision Conditions
When the LED on the PC board provided in the Defrost control board displays "Malfunction in transmission over DIII-NET and Malfunction due to address duplication"
Supposed Causes
Convenience Pack
Faulty connection of transmission wiring Faulty connection of transmission wiring and terminal External factor (example: noise) Faulty PC board
163
Troubleshooting
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Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Defrost icon on the ST controller displays a malfunction in transmission (in blue).
Does the LED for microcomputer normal/ malfunction in transmission of DIII-NET display a malfunction in transmission?
NO
Failure in registration of defrost with the ST controller Correct the contents of the registration.
YES
Are DIII-NET addresses duplicated?
YES
NO
Is the ST controller and Defrost control board properly connected each other?
NO
Make address settings again to cause no address duplication and then turn power supply ON again.
Connect properly.
YES
Is the internal wiring of the Defrost control board properly connected?
NO
Connect properly.
YES Turn power supply ON again.
Is the system reset to normal state? NO
YES
External factor (example: noise) other than the failure is supposed to cause the malfunction. Replace PC board.
164
Convenience Pack
Si81-503
Troubleshooting
2. Faulty PC board Applicable Models
Defrost control board ST controller
Methods of Malfunction Detection
Detect malfunctions according to the conditions of LED on the PC board provided in the Defrost control board.
Malfunction Decision Conditions
When the system is not reset even by turning power supply ON again (Normally, the system is automatically reset through watchdog.)
Supposed Causes
External factor (example: noise) Faulty PC board
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
The LED for microcomputer normal/ malfunction in transmission of DIII-NET turns ON or OFF.
Turn power supply ON again.
Is the system reset to normal state? NO
YES
External factor (example: noise) other than the failure is supposed to cause the malfunction.
Replace the PC board.
Convenience Pack
165
Troubleshooting
Si81-503
3. Faulty setting Applicable Models
Defrost control board
Methods of Malfunction Detection
Detect malfunctions according to the conditions of LED on the PC board provided in the Defrost control board.
Malfunction Decision Conditions
When the LED for faulty setting displays "Malfunction"
Supposed Causes
Faulty setting of DIII-NET setting dip switch on the PC board provided in Defrost control
board Faulty PC board
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
The LED for faulty setting displays "Malfunction"
On the dip switch on the PC board, is the DIII-NET set to any address other than "8-15 or more"?
NO
Set the address to other than "8-15 or more" and then turn power supply ON again.
YES
Replace the PC board.
166
Convenience Pack
Si81-503
Troubleshooting
4. Faulty relay/Faulty wiring Applicable Models
Defrost control board
Methods of Malfunction Detection
Detect faulty cooling or faulty defrost operation on the showcase.
Malfunction Decision Conditions
When faulty cooling or faulty defrost operation occurs on the showcase even though the LED on the PC board in the Defrost control board displays the normal state
Supposed Causes
Convenience Pack
Faulty wiring between showcases Faulty wiring between showcase and Defrost control board Faulty internal wiring of Defrost control board Faulty internal relays of Defrost control board Faulty PC board
167
Troubleshooting
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Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Solenoid valve of the showcase does not properly turn ON or OFF. Defrost is not properly conducted.
Does the LED for microcomputer normal/ malfunction in transmission of DIII-NET display a malfunction in transmission?
YES
Conduct diagnosis for "Malfunction in transmission over DIII-NET".
NO
Does the LED for faulty setting display a malfunction?
YES
Conduct diagnosis for "Faulty setting".
NO
Are wiring connections between showcases and between the Defrost control board and showcases properly connected?
NO
Connect properly and then turn power supply ON again.
YES
Is the internal wiring of the Defrost control board properly connected?
NO
Connect properly and then turn power supply ON again.
YES
Is there any faulty relay?
YES
NO
Replace the faulty relay and then turn power supply ON again.
Turn power supply ON again.
Is the system reset to normal state? NO
YES
External factor (example: noise) other than the failure is supposed to cause the malfunction. Replace the PC board.
168
Convenience Pack
Si81-503
Troubleshooting
4.7.2 Troubleshooting on Showcase Interface A. Check Points at Malfunction Screen display on ST controller
On the Screen 1 for display of icons, malfunctions are displayed by changing the color of icons. While in normal operation When a malfunction occurs in showcase temperature or contact When a malfunction occurs in transmission
Red Yellow Blue
Icons displayed in blue are appropriate to malfunctions on the showcase interface.
Convenience Pack
169
Troubleshooting
Si81-503
LED display on PC board
1. LED displaying "Microcomputer Normal / Malfunction in Transmission over DIII-NET Network This LED displays the operating conditions of the microcomputer and malfunctions in transmission over the DIII-NET. Conditions
Microcomputer normal
LED's operation pattern
BLINK Repetition of ON-OFF
ON
OFF
0.4 0.4s
Microcomputer malfunction
0.4s
OFF
0.4s
0.4s
ON
Continuous ON or Continuous OFF
Malfunction in transmission over BLINK DIII-NET and of Malfunction due to Repetition ON-OFF 4 times address duplication
ON
OFF
or OFF
ON OFF
ON OFF
ON OFF
ON OFF
OFF
0.2s 0.2s 0.2s 0.2s 0.2s 0.2s 0.2s
1s
2. LED displaying faulty setting This LED displays malfunctions to prevent wrong operation due to faulty settings. The LED alerts to the wrong setting of AirNet address to "0" or "32 or more". Conditions
LED's operation pattern
Normal
Continuous OFF
Malfunction
BLINK Repetition of ON-OFF
OFF
OFF
ON
0.4s
170
OFF
0.4s
ON
0.4s
OFF
0.4s
Convenience Pack
Si81-503
Troubleshooting
B. Flow Chart for Troubleshooting 1. Malfunction in transmission over DIII-NET Applicable Models
Showcase interface ST controller
Methods of Malfunction Detection
Detect malfunctions according to screen displays on the ST controller and the conditions of LED on the PC board of the showcase interface.
Malfunction Decision Conditions
When the LED on the PC board of the showcase interface displays "Malfunction in transmission over DIII-NET and Malfunction due to address duplication"
Supposed Causes
Convenience Pack
Faulty connection of transmission wiring Faulty connection of transmission wiring and terminal External factor (example: noise) Faulty PC board
171
Troubleshooting
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Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Showcase icon on the ST controller displays a malfunction in transmission (in blue).
Do the icons of showcases connected to the same showcase interface all display a malfunction in transmission (blue)?
NO
Conduct diagnosis for "Malfunction of thermistor".
YES
Does the LED for microcomputer normal/ malfunction in transmission of DIII-NET display a malfunction in transmission?
NO
YES
Are DIII-NET addresses duplicated?
YES
NO
Is the ST controller and showcase interface properly connected each other?
NO
Failure in registration of showcase with the ST controller Correct the contents of the registration.
Make address settings again to cause no address duplication and then turn power supply ON again.
Connect properly.
YES Turn power supply ON again.
Is the system reset to normal state? NO
YES
External factor (example: noise) other than the failure is supposed to cause the malfunction. Replace the PC board.
172
Convenience Pack
Si81-503
Troubleshooting
2. Malfunction of thermistor Applicable Models
Showcase interface ST controller
Methods of Malfunction Detection
Detect malfunctions according to screen displays on the ST controller.
Malfunction Decision Conditions
When a specific thermistor among thermistors connected to the showcase interface only shows a malfunction
Supposed Causes
Faulty mounting of thermistor Faulty thermistor parts Faulty PC board
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Showcase icon on the shop controller displays a malfunction in transmission (in blue).
Do the icons of showcases connected to the same showcase interface all display a malfunction in transmission (blue)?
YES
Conduct diagnosis for "Malfunction in transmission over DIII-NET".
NO
Is the temperature detection thermistor properly connected?
NO
Connect properly.
YES
Replace the thermistor and then turn power supply ON again.
Is the system reset to normal state?
YES
Complete repairing.
NO Replace the PC board.
Convenience Pack
173
Troubleshooting
Si81-503
3. Faulty PC board Applicable Models
Showcase interface ST controller
Methods of Malfunction Detection
Detect malfunctions according to the conditions of LED on the PC board of the showcase interface.
Malfunction Decision Conditions
When the system is not reset even by turning power supply ON again (Normally, the system is automatically reset through a watchdog.)
Supposed Causes
External factor (example: noise) Faulty PC board
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
The LED for microcomputer normal/ malfunction in transmission of DIII-NET turns ON or OFF.
Turn power supply ON again.
Is the system reset to normal state?
YES External factor (example: noise) other than the failure is supposed to cause the malfunction.
NO Replace the PC board.
174
Convenience Pack
Si81-503
Troubleshooting
4. Faulty setting Applicable Models
Showcase interface
Methods of Malfunction Detection
Detect malfunctions according to the conditions of LED on the PC board of the showcase interface.
Malfunction Decision Conditions
When the LED for faulty setting displays "Malfunction"
Supposed Causes
Faulty setting of dip switch for AirNet address on showcase interface Faulty PC board
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
The LED for faulty setting displays "Malfunction"
On the dip switch on the PC board, is the AirNet set to any address other than "0" and "32 or more"? YES
NO
Set the address to other than "0" and "32 or more" and then turn power supply ON again.
Replace the PC board.
Convenience Pack
175
Troubleshooting
Si81-503
5. Malfunction of showcase Applicable Models
Showcase interface
Methods of Malfunction Detection
Detect abnormally high temperature through the showcase interface.
Malfunction Decision Conditions
Individual monitoring conditions of showcases. According to masking time and monitoring temperature.
Supposed Causes
Frosting Refrigerant shortage Failure in showcase (solenoid valve, expansion valve, and fan) Clogged drier
Troubleshooting Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Z1 (malfunction of contact) or Z2 (malfunction of upper limit of temperature) is output to AirNet.
YES Conduct forced defrost operation.
Frosting?
NO
YES Run out of gas?
NO
If a malfunction occurs on the showcase due to abnormally high temperature, since the showcase may run out of gas, check the refrigerant for sealing and flashing with liquid eye.
Replace the parts of showcase. For details, refer to information in the Service Manual of Showcase. Check the drier for clogging.
176
Convenience Pack
Si81-503
Maintenance
5. Maintenance 5.1
Procedure for Removal of Parts from Refrigerant System As the results of checking a malfunction, if the malfunction results from part(s) used in the refrigerant system, remove the part(s) referring to the procedure for refrigerant recovery shown below. Location of malfunction · Outdoor unit compressors (M1C, M2C and M3C)
Procedure for maintenance Refer to Maintenance 1.
· Solenoid valves (Y1S to Y6S) · Four way valves (Y1R to Y3R) 1
· Main electronic expansion valve (Y1E) · Injection electronic expansion valve (Y2E) · High pressure switches (S1PH and S2PH) · Drier · Low pressure switch (S1PL)
2 3 4
· Receiver
Refer to Maintenance 2.
· Solenoid valve (Y7S, Y8S) · Booster unit compressor (M1C) · Freezer showcase · Refrigerating showcase · Air conditioner indoor unit
Refer to Maintenance 3. Refer to Maintenance 4.
* Since the low pressure and high pressure sensors incorporate a check valve, these parts can be dismounted without recovering the refrigerant.
Convenience Pack
177
Maintenance
Si81-503
Solenoid valve Y7S Solenoid valve Y8S Electronic expansion valve (heating) Y1E
Liquid receiver
Service port d Four way valve Y1R Four way valve Y2R Four way valve Y3R
Pressure switch S1PL
Pressure switch (high pressure protection) S1PH Solenoid valve Y5S Solenoid valve Y2S Solenoid valve Y1S Solenoid valve Y3S
Service port a Solenoid valve Y6S Pressure sensor (low pressure) S1NPL Solenoid valve Y4S Pressure switch (high pressure protection) S1PH
Pressure sensor (low pressure) S2NPL Stop valve A Electronic expansion valve Y2E Pressure switch (high pressure protection) S3PH
Service port c
Stop valve B Drier
Stop valve C (liquid side)
STD compressor 2 M3C
STD compressor 1 M2C Service port b
Pressure switch (high pressure protection) S2PH Stop valve D (gas on refrigerating/ freezing side) INV compressor M1C
Stop valve E (gas on air conditioner side) 3D050258
178
Convenience Pack
Si81-503
Maintenance
1) Maintenance 1: Maintenance related to outdoor unit compressor
Applicable parts
Compressors (M1C, M2C and M3C), Solenoid valves (Y1S to Y6S), Four way valves (Y1R to Y3R), Main electronic expansion valve (Y1E), Injection electronic expansion valve (Y2E), High pressure switches (S1PH and S2PH), Low pressure switch (S1PL), and Drier
No continuous operations allowed Y2R Y1R
Outdoor unit Heat pump indoor unit
a
E
A HPS HPS
HPS
M1C
M2C
M3C
LPS
Refrigerating showcase
D
b
c Y3R
Y2E
F
G
S Receiver Y1E
Freezer showcase
Drier
C
d DC
B
In order to prevent liquid sealing, do not close the valve for an extended period of time.
A ··· Discharge stop valve B ··· Stop valve after receiver C ··· Liquid stop valve D ··· Gas stop valve on refrigerating showcase E ··· gas stop valve on air conditioner side a, b, c, d ··· Service port
Set the RUN switch (toggle switch) for the outdoor unit to OFF. After the outdoor unit stops, turn OFF the power supply for the outdoor unit. After that, turn OFF the power supplies for the defrost control panel, alarm panel, freezer/refrigerating showcases, and booster, respectively. Furthermore, turn OFF the remote controller for air conditioner indoor unit and then turn OFF the power supply for the air conditioner indoor unit. Close the stop valves in order of (C) → (D) → (E) → (B). Recover the refrigerant through the service port (d) until the pressure falls below 1MPa. Recover the refrigerant through the service ports (a, b, and c). ( Shaded region) Recover the refrigerant in the liquid piping through the service port (d) again. At the replacement of the compressor, replace the drier as well. (However, for the replacement of parts replaceable in a short period of time such as SVs or HPSs, the drier is not required to replace.) Concurrently with recovering the refrigerant, dismount the switch box. After recovering the refrigerant in Step above, replace or repair the maintenance parts.
Replace the drier. Conduct airtight checks.
After the completion of replacing or repairing the parts, conduct vacuuming through the service ports (a, b, and c). After that, conduct vacuuming through the service port (d). Open the stop valves in order of (B) → (E) → (D) → (C). Turn ON the power supplies for the outdoor unit, defrost control panel, alarm panel, freezer/refrigerating showcases, and indoor unit (while the remote controller remains OFF), and then set the RUN switch (toggle switch) to ON. While running the system, use the refrigerant charging kit to charge the refrigerant. Furthermore, use the charging cylinder to charge 1.0 liter of refrigerating oil. (Refer to information in "Procedure for charging of refrigerating oil/refrigerant through the use of charging cylinder and refrigerant charging kit.) After a lapse of several minutes (5 minutes), turn ON the power supply for the booster. Charge the refrigerant by the same quantity as that recovered. After the completion of charging, turn ON the remote controller. To replace the compressor or drier, be sure to replace the gasket together. (Refer to next page.) Convenience Pack
179
Maintenance
Si81-503
Cautions for replacement of compressor / drier 1. To replace the compressor or drier, be sure to procure and replace the gasket(s) together. • To fasten the gasket, apply a coating of refrigerating machine oil to the front and back side surface of the gasket(s). • Securely fasten the nut for gasket(s) in the torque range shown below. Furthermore, pay careful attention not to excessively fasten the nut for gasket(s). • Do not cause any flaws or dust to the gasket(s). • Replace the compressor or drier with no gasses jetting out from it. Drawing No. of gasket Location Compressor Drier
Q’ty required 1 (total 3) 2
Service part No. 1706635 1706628
Type KRCY 2 KRCY 5
Specification For φ 6.4 For φ 15.9
Fasting torque of nut 15.7 (14.2~17.2) N·m 68.6 (61.8~75.4) N·m
COMPRESSOR
Gasket (in one place)
Gaskets (in two places, upper and lower)
Gas flow direction
2. If the gasket is hard to be dismounted, turn the nut while pushing it toward the piping side (as shown in figure on the right).
(Turn this nut while pushing it.)
Hold the piping by hand to prevent the piping from turning.
180
Convenience Pack
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Maintenance
2) Maintenance 2: Maintenance of receiver
Applicable parts
Receiver and Solenoid valves (Y7S, Y8S)
No continuous operations allowed Y2R Y1R
Outdoor unit Heat pump indoor unit
a
E
A HPS HPS
HPS
M1C
M2C
M3C
LPS
Refrigerating showcase
D
b
c Y3R
Y2E F
G
S Receiver
Freezer showcase
Drier
C DC
Y1E
d B
In order to prevent liquid sealing, do not close the valve for an extended period of time.
A ··· Discharge stop valve B ··· Stop valve after receiver C ··· Liquid stop valve D ··· Gas stop valve on refrigerator/freezer side E ··· gas stop valve on air conditioner side a, b, c, d ··· Service port
Set the RUN switch (toggle switch) for the outdoor unit to OFF. After the outdoor unit stops, turn OFF the power supply for the outdoor unit. After that, turn OFF the power supplies for the defrost control panel, alarm panel, freezer/refrigerating showcases, and booster, respectively. Furthermore, turn OFF the remote controller for air conditioner indoor unit and then turn OFF the power supply for the air conditioner indoor unit. Close the stops valves (C) and (A). Recover the refrigerant through the service port (d) on the (B). ( Shaded region) Concurrently with recovering the refrigerant, dismount the switch box. After recovering the refrigerant in Step above, replace or repair the maintenance parts. Conduct airtight checks. After the completion of replacing or repairing the parts, conduct vacuuming through the service port (d) on the (B). After the completion of vacuuming, open the stop valves (A) and (C).
Turn ON the power supplies for the outdoor unit, defrost control panel, alarm panel, freezer/refrigerating showcases, and indoor unit (while the remote controller remains OFF), and then set the RUN switch (toggle switch) to ON. Furthermore, use the charging cylinder to charge 1.0 liter of refrigerating oil. (Refer to information in "Procedure for charging of refrigerating oil/refrigerant through the use of charging cylinder and refrigerant charging kit.) After a lapse of several minutes (5 minutes), turn ON the power supply for the booster. Charge the refrigerant by the same quantity as that recovered. After the completion of charging, turn ON the remote controller.
Convenience Pack
181
Maintenance
Si81-503
3) Maintenance 3: Maintenance of booster compressor and freezer showcase
Applicable parts
Booster compressor (MC) and Freezer showcase
The continuous operations allowed on the air conditioner and the refrigerating unit. Y2R Y1R
Outdoor unit Heat pump indoor unit
a
E
A HPS HPS
HPS
M1C
M2C
M3C
LPS
Refrigerating showcase
D
b
c Y3R
Y2E
F
G
S Receiver
Freezer showcase
Drier
C DC
Y1E
d B
C ··· Liquid stop valve D ··· Gas stop valve on refrigerator/freezer side E ··· Gas stop valve on air conditioner side F ··· Freezer inlet stop valve G ··· Booster outlet stop valve a, b, c, d ··· Service port
Close the stop valve (F). After a lapse of 1 minute, close the stop valve (G). Turn OFF the power supplies for the freezer showcase and booster, respectively. (In order to conduct maintenance on the freezer showcase, turn OFF the power supply for the defrost control panel once and then disconnect the power supply wiring for the freezer showcase.) Recover the refrigerant through the service ports on the (F) and (G). Replace or repair parts. Conduct airtight checks. After the completion of replacing or repairing the parts, conduct vacuuming through the service ports on the (F) and (G). Charge the refrigerant by the same quantity as that recovered and also 0.5 liter of oil through the service port on the (C). (Put the oil in the charging cylinder and thoroughly evacuate air from the charging cylinder. Then, while pressurizing the charging cylinder with the refrigerant, conduct the charging operation.)
After the completion of vacuuming, open the (F) and (G). After reinstalling the wirings to the freezer showcase and the defrost control panel, turn ON the power supply. Then, after a lapse of several minutes (5 minutes), turn ON the power supply for the booster.
182
Convenience Pack
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Maintenance
4)Maintenance 4: Maintenance of refrigerating showcase and air conditioner indoor unit
Applicable parts
Refrigerating showcase and Air conditioner indoor unit
No continuous operations allowed Y2R Y1R
Outdoor unit Heat pump indoor unit
a
E
A HPS HPS
HPS
M1C
M2C
M3C
LPS
Refrigerating showcase
D
b
c Y3R
Y2E
F
G
S Receiver
Freezer showcase
Y1E
Drier
C
d DC
B
C ··· Liquid stop valve D ··· Gas stop valve on refrigerator/freezer side E ··· Gas stop valve on air conditioner side F ··· Freezer inlet stop valve G ··· Booster outlet stop valve a, b, c, d ··· Service port
Turn OFF the air conditioner remote controller. Then, turn OFF the power supplies for the freezer showcase and the booster. After that, close the stop valves (F) and (G). Close the stop valve (C) to conduct pump down operation. (The compressor will automatically stop or the pump down operation will be conducted for a period of 10 minutes.) Set the RUN switch (toggle switch) for the outdoor unit to OFF. After the compressor automatically stops, close the stop valves (D) and (E), and then turn OFF all supplies for the outdoor unit, freezer showcase, refrigerating showcase, booster, air conditioner indoor unit, and defrost control panel. Recover the refrigerant through the service ports on the (C), (D), and (E). Replace or repair parts. Conduct airtight checks. After the completion of replacing or repairing the parts, conduct vacuuming through the service ports on the (C), (D), and (E), and then charge the refrigerant at the same quantity as that recovered.
After the completion of vacuuming, open the (C), (D), and (E). Except for the power supply for the booster, turn ON all power supplies for the freezer showcase and the refrigerating showcase to run the system. After a lapse of several minutes (5 minutes), turn ON the power supply for the booster. Charge the refrigerant by the same quantity as that not charged in Step above.
Convenience Pack
183
Maintenance
5.2
Si81-503
Procedure for Removal-LRYCP14DY1
5.2.1 Removal of Parts Related to Outer Plate Procedure Step 1 Unscrew the four
Warning
Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure
Points
screws that hold the front panel (upper left). 2
Unscrew the four screws that hold the front panel (upper right).
3
Push the stop valve cover down.
4
Unscrew the three screws that hold the front panel (lower left).
5
Unscrew the three screws that hold the front panel (lower right).
6
Unscrew the four screws that hold the switch box cover (on the left side).
7
Unscrew the four screws that hold the switch box cover (on the right side).
184
Convenience Pack
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Maintenance
5.2.2 Removal of Propeller Fan/Fan Motor Procedure Step 1 Remove the fan cover
Warning
Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Screw
with a single screw. 2
Points
In order to remove the propeller fan, remove the hexagon head nut and washer that hold the fan.
Hexagon head nut Washer D cut
Lock washer
3
Disconnect the connectors (two each) for fan motor from the PC board in the switch box (on the right side).
4
The connectors for the fan motor are fixed with clamps in four places.
5
Unscrew the four each screws that hold the fan motors.
Connector (red) for right fan motor
Clamp Connector (blue) for left fan motor
Convenience Pack
185
Maintenance
Si81-503
5.2.3 Removal of Switch Box Procedure
Warning
Step
Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure
Removing the front
panels in accordance with "Procedure for removal of outerplate-related parts", remove the front panels, you should see PC boards.
Points
Configuration of PC boards
Sub PC board (A2P)
Inverter PC board (A5P)
Main PC board (A1P)
Left fan motor drive PC board (A4P)
Right fan motor drive PC board (A3P)
1. Remove the switch box. 1 Disconnect cords that are fixed to the switch box. 2
Unhook both ends of the switch box and then pull out it.
Hook
186
Convenience Pack
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Maintenance
5.2.4 Removal of PC Boards Procedure
Warning
Step
Procedure
1. Remove the PC board (A1P: Main PC board). 1 Disconnect the connectors and wires connected to this PC board. 2
Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work.
While holding the locking guard spacer with a long-nose plier, detach the PC board from the switch box by left hand.
A1P
Points
Fuse (250V, 10A)
X19A (Transformer)
X20A (Transformer)
X21A (Injection motorized valve)
X37A
X35A (Low pressure switch)
X38A (Current sensor) X3A (High pressure switch 1)
X23A (Suction pipe thermistor 1)
X4A (High pressure switch 2)
X25A (Suction pipe thermistor 2)
X6A (K2S)
X26A (Discharge pipe thermistor 1) X27A (Discharge pipe thermistor 2)
X5A (Inv. PC board power supply)
X29A (Outdoor air thermistor)
X8A F2 (Indoor unit) F1 (Indoor unit) C (RUN switch) B (RUN switch)
X13A X9A
2. Remove the PC board (A2P: Sub PC board). 1 Disconnect the connectors and wires connected to this PC board. 2
While holding the locking guard spacer with a long-nose plier, detach the PC board from the switch box by left hand.
A2P
Fuse (250V, 10A)
X10A
X11A
X19A (Transformer)
X12A
X14A
X20A (Transformer)
X30A (Low pressure sensor) X31A (High pressure sensor)
X21A (Injection motorized valve)
X1A (Power supply)
X3A (High pressure switch 3)
X38A (Current sensor)
X6A (K3S)
X5A (Toggle switch)
X13A
X8A X9A
X11A X10A
Convenience Pack
X34A
X1A (Power supply)
X12A
X16A X15A F1 X14A
X30A (Low pressure sensor) F2
Transmission line
187
Maintenance
Procedure
Si81-503
Warning
Step
Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure
Points
3. Remove the PC board (A3P, A4P: Fan drive PC board). 1 Disconnect the connectors connected to this PC board. 2
Unscrew the four screws and then remove the PC board together with the base.
4. Remove the PC board (A5P: Inverter PC board). 1 Disconnect the connectors connected to this PC board. 2
X1A
X2A
X4A
Unscrew the four screws and then remove the PC board together with the base.
L1 L2 L3 U V W N X5A X3A
X10A
X11A
5. Remove the PC board (for Z1F noise filter). 1 Disconnect the connectors connected to this PC board. 2
Unscrew the four screws and then remove the PC board together with the base. L3
L1
N
L2
188
Convenience Pack
Si81-503
Maintenance
5.2.5 Removal of Four Way Valves Procedure Step
Warning
Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure
Points
Removing the front
panels in accordance with "Procedure for removal of outerplate-related parts", remove the front panels. Be sure to proceed with this work after completely discharging refrigerant. 1. Remove the four way valves. 1 Unscrew a single screw that holds the coil of the four way valve and then remove the coil.
Four way valve (Y2R: Sub)
Four way valve (Y3R: Suction)
Coil Screw
2
Strip the four brazed sections that hold the valve body of the four way valve and then remove it. (Cooling is needed.)
Coil Screw
Coil Screw
Four way valve (Y1R: Main)
Convenience Pack
189
Maintenance
Si81-503
5.2.6 Removal of Pressure Sensors/High Pressure Switches Procedure Step
Warning
Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure
Points
Removing the front
The pressure sensors can
panels in accordance with "Procedure for removal of outerplate-related parts", remove the front panels.
be removed without discharging refrigerant.
1. Remove the pressure sensors. 1 Apply two spanners to the pressure sensor to remove it.
In order to remove
the pressure switches, be sure to completely discharge refrigerant before proceeding with this work. 2. Remove the high pressure switches. 1 Strip the one brazed section and then remove the high pressure switch. (Cooling is needed.) 3. Remove the low pressure switch. 1 Strip the one brazed section and then remove the low pressure switch. (Cooling is needed.)
190
Pressure Low pressure sensor switch(S1PL) (S2NPL: Low pressure)
High pressure switch (S3PH)
Pressure sensor (S1NPH: High pressure)
High pressure switch (S2PH)
Pressure sensor (S1NPL: Low pressure)
High pressure switch (S1PH)
Convenience Pack
Si81-503
Maintenance
5.2.7 Removal of Electronic Expansion Valve/Solenoid Valves Procedure Step
Warning
Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure
Points
Removing the front
panels in accordance with "Procedure for removal of outerplate-related parts", remove the front panels. Be sure to proceed with this work after completely discharging refrigerant. 1. Remove the electronic expansion valve. 1 Pull out the coil from the electronic expansion valve upward. 2
Coil of electric expansion valve
Strip the two brazed sections that hold the main body of the electronic expansion valve and then remove the main body. (Cooling is needed.) Brazed section
2. Remove the solenoid valve. 1 Unscrew the one screw that holds the coil of the solenoid valve and remove the coil. 2
Coil of solenoid valve
Strip the two brazed sections that hold the main body of the solenoid valve and then remove the main body. (Cooling is needed.)
Screw
Brazed section
Convenience Pack
191
Maintenance
Si81-503
5.2.8 Removal of Liquid Receiver Procedure Step
Warning
Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure
Points
Be sure to proceed
with this work after completely discharging refrigerant. 1. Remove the top panel (on the left side). 1 Unscrew the four screws that hold the top plate (on the left side) and then remove the top panel.
2. Remove the motor base. 1 Unscrew the four screws that hold the motor base and then remove the motor base.
Four screws
3. Remove the liquid receiver. 1 Strip the two brazed sections. 2
192
Pull out the liquid receiver upward.
Convenience Pack
Si81-503
Maintenance
5.2.9 Removal of Compressor Procedure Step
Warning
Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure
Points
Removing the front
panels in accordance with "Procedure for removal of outerplate-related parts", remove the front panels. Be sure to proceed with this work after completely discharging refrigerant. 1. Remove the sound insulation enclosure. 1 Disconnect the five mounting strings from the sound insulation. 2 Remove the terminal cover. 3 Disconnect the compressor lead cable from the compressor terminals. 4 Remove the sound insulation A. 5 Remove the sound insulation B and C. 2. Remove the compressor. 1 Unbolt the three bolts that hold the compressor. 2
Cut the suction pipe and discharge pipe with a pipe cutter.
3
While receiving oil, remove the nut and the gasket from the oil equalizer pipe.
4
Lift and remove the compressor out.
5
Strip brazed sections from other pipes.
Convenience Pack
Sound insulation A Sound insulation B
Sound insulation C
Terminal cover
(Brown)
(Blue)
(Blue)
(Red) (Red)
(White)
(White)
INV compressor
STD compressor
193
Maintenance
5.3
Si81-503
Procedure for Removal-LCBKP1AR
5.3.1 Removal of Compressor Procedure Step
Warning
Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure
Points
Be sure to proceed
with this work after completely discharging refrigerant. 1. Remove the casing. 1 Unscrew the two each screws that hold the front and back panels and then remove these panels. 2
Unscrew the four screws that hold the side panels and then remove these panels.
CAUTION If the refrigerant gas leaks during the work, ventilate the working area. (If the refrigerant gas contacts a flame, toxic gases may be generated.)
Side panel
Front panel Refrigerant piping
2. Remove the compressor. 1 Remove the accumulator cover. 2
Remove the terminal cover of the compressor.
3
Disconnect the lead wires from the compressor terminals.
4
Remove the three mounting nuts from the compressor.
5
Strip brazed sections of the suction pipe and discharge pipe, respectively.
6
Lift the compressor so that the compressor mounting bolts can be removed and then remove the compressor.
194
Brazed section of discharge pipe
Brazed section of suction pipe Accumulator cover
Terminal cover
Compressor
Mounting nut
Convenience Pack
Si81-503
5.4
Maintenance
Procedure of Removal-BRR2A1R
5.4.1 Removal of PC Boards Procedure
Warning
Step
Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure
Points
Unscrew the four
screws that hold the front panel and then remove this panel. 1. Remove the PC board (for control). 1 Disconnect the connectors from this PC board. Push and open the two hooks of the PC board mounting plate and then remove the PC board. 2. Remove the PC board (for inverter). 1 Disconnect the connectors from this PC board. 2
Unscrew the three screws that hold the PC board.
3
Push and open the two hooks of the PC board mounting plate and then remove the PC board.
bo
ar
d
Hooks
Inv (A er te 2P r P ) C
2
Control PC board (A1P)
Screws
Hooks
Convenience Pack
195
Maintenance
5.5
Si81-503
Procedure of Removal-BRR3A1V1R
5.5.1 Removal of PC Board Procedure
196
Warning
Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work.
Convenience Pack
Si81-503
5.6
Maintenance
Procedure of Removal-BRP5A1V1
5.6.1 Removal of PC Board Procedure
Convenience Pack
Warning
Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work.
197
Maintenance
5.7
Si81-503
Emergency operation when compressor has poor insulation If the compressor stops due to malfunction, the compressor will conduct the automatic backup operation. However, if the compressor has poor insulation to trip the main circuit breaker, the automatic backup operation will not be functioned due to stop of the overall system. In this case, conduct the forced backup operation of the operable compressor in the following procedure.
Procedure for forced backup operation If INV compressor has poor insulation:
1. Set the OPERATION switch (toggle switch) of the outdoor unit to OFF. 2. Turn OFF the main circuit breaker of the outdoor unit. 3. Remove the power supply connection terminal from the INV compressor (from all U, V, W and N phases). * Make the taping to the terminals removed. 4. Turn ON the main circuit breaker of the outdoor unit and then set the OPERATION switch to ON. (The backup operation will start by the STD compressor.) Precautions · Do not conduct the reset operation shown below while in backup operating until malfunction is decided. Various reset operations · Setting the OPERATION switch of the outdoor unit to OFF/ON. · Turning OFF/ON the main circuit breaker. If STD compressor has poor insulation:
1. Set the OPERATION switch (toggle switch) of the outdoor unit to OFF. 2. Turn OFF the main circuit breaker of the outdoor unit. 3. Remove the power supply connection terminal from the STD compressor (from all U, V and W phases). * Make the taping to the terminals removed. 4. Remove the connector “X6A” (i.e., overcurrent relay of the STD compressor) on the main PC board (A2P). 5. Turn ON the main circuit breaker of the outdoor unit and then set the OPERATION switch to ON. (The backup operation will immediately start by the INV compressor.)
198
Convenience Pack
Si81-503
6.
Common Item
Common Item
6.1. AirNet System 6.1.1 Wiring Image and Components Outdoor unit DIII-NET
Indoor unit
INV box Booster unit Cooling command to refrigerator
Thermistor Cooling command for refrigeration
ST controller
Defrost control panel
Refrigerator
Refrigerator
Abnomal Output
Refrigerator
Freezer
AN relay panel
Modem Public line
Temperature thermistor ACC Showcase IF
Alarm relay panel
Showcase IF DIII-NET
Item
Remote panel
Part name
Parts required only for remote monitoring Modem, SA AirNet adapter, Dummy PC board for indoor unit Parts common to remote monitoring and equipment control
ST controller, Showcase IF
Parts required only for equipment control
Defrost control panel, Buzzer unit
6.1.2 Functions (1) Monitor (ST controller) This monitor has functions equivalent to LC used on the AirNet system, such as retrieving of equipment data, prediction of malfunctions and failures, creation of daily report data, and communications with center. 1. Monitoring of outdoor and indoor units The outdoor unit monitors the sensor values, operating conditions, control conditions and malfunction codes of the outdoor unit, and also the sensor values, operating conditions, control conditions and malfunction codes of the indoor unit, together with the indoor unit of air conditioner, over the DIII-NET network. Convenience Pack system monitors the data on indoor unit as well. 2. Monitoring of booster unit Used to monitor the operating conditions, control conditions, malfunction codes, discharge pipe temperature, and high/low pressures of the booster unit, through the "SA AirNet Adapter∗" and "Dummy PC board for indoor unit". (The discharge pipe temperature and high/low pressures are added for monitoring at a later stage.)
∗ An adapter used to monitor SkyAir unit over AirNet system.
3. Monitoring of showcase Used to monitor unified abnormalities in temperatures of all showcases through the showcase IF. A single sheet of showcase IF enables monitoring of 3 units of showcases. (2) Modem This is a communication device, which is used to transmit the prediction signals of malfunctions and failures and data on daily report detected by the ST controller to ACC center. Convenience Pack
199
Common Item
Si81-503
6.1.3 Data Browsing Information on prediction of malfunctions and failures and data on daily operation can be browsed on Web Information 2. (For details on handling, consult representatives at our Service station.) Data name Customer information Equipment information History of occurrence of malfunction and prediction Data 30 before malfunction Daily report
200
Contents Name, address, telephone number and others of customer Model, Serial No., Installation place, address data and others of air conditioner Occurrence conditions of prediction of malfunctions and failures Data on operation 30 minutes (2 hours on showcases) before prediction of malfunction and failure are detected. Sampling intervals: 1 minute (5 minutes on showcases) Daily trend data, integrated values of time and number of times, and maximum/minimum values Sampling intervals: 1 hour
Convenience Pack
Si81-503
Common Item
6.1.4 Method of Setting Repair Mode When conducting checks or repairs of equipment on site, there may be cases where needless audible alarms are given. In order to avoid the occurrences of these needless alarms, this system has a function by which no audible alarms are given to ACC center. ← Repair mode On the ST controller, either of display screen of the main unit or AirNet test operation tool can start or terminate repairs. Operating display screen of the main unit of ST controller 1. Using display screens in order shown below on the System Setting screen will display the BUTTON for service login on the System Setting screen. Select the Service Login button and enter the password dedicated to service work. A menu dedicated to service authority will be displayed on the System Setting screen. (Use "daikin" or "DAIKIN" as the password for the service authority, which does not correspond with the password of controller.) 3.
1.
2.
4.
"AirNet Setup" is displayed here.
• •
Execute "AirNet Setting" displayed on the System Setting screen and open the AirNET Setting screen. Pressing the "Repair Start" button will change the button name to "Repair Terminated". Furthermore, the display of AirNet conditions will change from "Completed to Online" to "In repair".
•
After the completion of check/repair, pressing the "Repair Terminated" button will change the button name to "Repair Start", thus returning the AirNet conditions to "Completed to Online". • • • •
At repair start, the system gives a repair alarm to ACC, thus notifying ACC that the unit is brought to "In repair" mode. While in "In repair" mode, the system gives no alarms to alert to malfunction, prediction, and time tone. Upon termination or repair, the system gives a repair alarm to ACC, thus notifying ACC that the repair is terminated. Even if you fail to cancel the repair, the repair will be automatically terminated six hours after starting the repair.
Operation with AirNet test operation tool
• •
Pressing the "Repair Start" button on the Main screen will enter "In repair" mode. Terminating the NSC AirNet test operation tool will terminate repair. A personal computer, software dedicated to AirNet, LAN card, and others will be required.
Convenience Pack
201
Common Item
Si81-503
6.2. Precautions for Servicing New Refrigerant Units Compared to the conventional refrigerant R-22, the new refrigerant R-407C is used under higher working pressure and needs a different type of refrigerating oil. Consequently, some of service tools and piping materials required for piping work should be different from conventional ones. Refrigerant Refrigerating oil Condensing pressure
Conventional refrigerant R-22 (Single-component refrigerant) Mineral oil (SUNISO) 1.84MPa (18.8 kg/cm2)
New refrigerant R-407C (Mixture refrigerant) Synthetic (Ether) oil 2.01MPa (20.5 kg/cm2)
Service Tools Service work for the refrigerant system on units using new refrigerant needs some dedicated tools. Referring to table shown below, select proper service tools. Typical tools and equipment used for piping work and compatibility Compatibility with conventional (R-22 refrigerant use) tool
Tool
Work process/Intended use
Pipe cutter Flaring tool
Used to cut pipes. Used to flare pipes.
Compatible, possible to be appropriated
Used to apply to flare sections.
Use dedicated ether, ester or alkylbenzene oil or their mixture.
Used to connect flare nuts. Used to expand pipes for connection. Used to bend pipes. Used to prevent oxidation in pipes. Used to braze pipes.
Compatible, possible to be appropriated
Refrigerating oil Torque wrench
Refrigerant piping work
Pipe expander Pipe bender Nitrogen gas Welder Gauge manifold
Airtight test
Charge hose
Airtight test Refrigerant additional charging
Vacuum pump
Vacuum drying
Charging cylinder Refrigerant weighing instrument Gas leak detector
Due to high pressure of new refrigerant, dedicated tools are needed to prevent the entry of impurities. Compatible, possible to be appropriated (Keep close attention so that no oil will flow back to the unit while the pump stops running.) Not needed as refrigerant is charged with the use of weighing instrument.
Refrigerant charging
Compatible, possible to be appropriated
Used for vacuuming, refrigerant refilling, and operation checking.
Used to check gas leaks.
Dedicated detector is needed. (Detector used for R-134a is applicable.)
For brazing connection
• •
New refrigerants require more stringent attention to prevent the entry of impurities in the refrigerants. Therefore, in order to braze pipes, be sure to flush the pipes with nitrogen gas. Besides brazing, to prevent the entry of impurities in the piping system, not only conduct positive preparation works and vacuum drying but also step up control on construction compared to the conventional one.
For flaring
• •
Using pipes of thicker wall thickness produces larger burr at the pipe cut sections. Therefore, be sure to finish the cut sections by positive chamfering (filing). Furthermore, pay utmost attention not to leave swarf in the pipes. Apply an appropriate amount of refrigerating oil to the inside and outside surfaces of flared section to prevent leaks. Furthermore, be sure to use synthetic oil (e.g. ether oil, ester oil, alkylbenzene oil, or their mixture) for the refrigerating oil.
For refrigerant charging
•
Be sure to charge the unit with new refrigerant in a liquid state through the service port of the liquid-side stop valve (on the outdoor unit). For charging refrigerant, conduct vacuum drying with the use of a vacuum pump. NEVER purge air through the pipe.
202
Convenience Pack
Si81-503
Common Item
Airtight tests
•
Complying with the High Pressure Gas Safety Law, be sure to conduct airtight tests on all units that have a legal refrigeration capacity of 3 tons or more. Conduct servicing work on units using a new refrigerant without fail, in accordance with information above, which, if not heeded, could result in malfunctions. Furthermore, for details on handling, work, and tools for new refrigerants, refer to information in "SM-25 R-407C and R-410A Refrigerants manual for Refrigeration piping and management" issued by our company.
Convenience Pack
203
Common Item
Si81-503
6.3. Characteristics Table 6.3.1 Characteristics of Refrigerant (R-407C)
Pressure MPa 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.85 0.90 0.95
204
Temperature Liquid side Gas side
°C
°C
— — — — — — — — — –1.1
–37.0 –28.9 –21.4 –16.3 –11.5 –7.6 –3.7 –0.6
1.4 3.9 6.4 8.7 10.6 12.6 14.5 16.5 18.4 20.2
2.5 5.4 7.9 10.3 12.7 14.9 16.8 18.7 20.6 22.5 24.4 26.1
Temperature
Pressure MPa
Liquid side
1.00 1.05 1.10 1.15 1.20 1.25 1.30 1.35 1.40 1.45 1.50 1.55 1.60 1.65 1.70 1.75 1.80 1.85 1.90 1.95
21.7 23.2 24.7 26.3 27.8 29.3 30.9 32.0 33.2 34.4 35.6 36.8 38.1 39.3 40.5 41.7 42.9 44.1 45.0 46.0
°C
Temperature
Gas side
Pressure MPa
Liquid side
Gas side
27.5 29.0 30.5 32.0 33.5 34.9 36.4 37.6 38.7 39.9 41.1 42.2 43.4 44.6 45.7 46.9 48.1 49.2 50.0 50.9
2.00 2.05 2.10 2.15 2.20 2.25 2.30 2.35 2.40 2.45 2.50 2.60 2.70 2.80 2.90 3.00 3.10 3.20 3.30 3.40
46.9 47.9 48.9 49.8 50.8 51.8 52.7 53.7 54.7 55.6 56.6 58.4 60.0 61.6 63.2 64.9 66.5 68.1 69.8 71.4
51.9 52.8 53.7 54.6 55.6 56.5 57.4 58.3 59.2 60.2 61.1 62.8 64.3 65.9 67.4 68.9 70.5 72.0 73.5 75.1
°C
°C
°C
Convenience Pack
Si81-503
Common Item
6.3.2 Temperature & Resistance Characteristics of Thermistor Thermistor kΩ
Temperature
A
B
C
–10 –8 –6 –4 –2
112.0 100.4 90.2 81.1 73.0
— — 88.0 79.1 71.1
— — — — —
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58
65.8 59.4 53.7 48.6 44.1 40.0 36.3 33.0 30.1 27.4 25.0 22.9 20.9 19.1 17.5 16.1 14.8 13.6 12.5 11.5 10.6 9.8 9.1 8.4 7.8 7.2 6.7 6.7 6.2 5.7
64.1 57.8 52.3 47.3 42.9 38.9 35.3 32.1 29.2 26.6 24.3 22.2 20.3 18.5 17.0 15.6 14.2 13.1 12.0 11.1 10.3 9.5 8.8 8.2 7.6 7.0 6.7 6.0 5.5 5.2
640.4 580.0 525.6 477.0 433.4 394.2 358.9 327.1 298.5 272.6 249.0 228.1 208.9 191.5 175.8 161.5 148.4 136.6 125.8 116.0 107.0 98.8 91.3 84.4 78.1 72.3 67.1 62.2 57.8 53.7
60 62 64 66 68
4.96 4.62 4.30 4.01 3.75
50.0 46.5 43.3 40.4 37.6
70 72 74 76 78
3.50 3.27 3.06 2.86 2.68
80 82 84 86 88
2.51
— — — — — — — — — — — — — — — — — — — —
°C
90 92 94 96 98 Application
Convenience Pack
— — — — — — — — — • Suction air • Outdoor air
• Radiation fin
35.1 32.8 30.6 28.6 26.8 25.1 23.5 22.0 20.6 19.4 18.2 17.1 16.0 15.1 14.2
• Discharge pipe
205
Common Item
Si81-503
6.3.3 Voltage Characteristics of Pressure Sensors
206
Convenience Pack
Si81-503
Common Item
6.4. Airtight Tests and Vacuum Drying 6.4.1 Airtight Tests 1) Test procedure (Apply pressure and leave standing) Apply pressure to each individual refrigerant system through the liquid and gas pipes slowly in proper steps. (Be sure to use nitrogen gas for the tests.) Increase the pressure of high pressure part (i.e., liquid pipe) up to 3.3 MPa and that of low pressure part (i.e., gas pipe) up to the design pressure for the indoor unit (to be procured locally). If no pressure drops occur for a period of 24 hours, both parts will be assumed to pass the airtight test. If any pressure drop occurs for the period, check them for any leak points. Work Process of high pressure side
Step 1
Pressurize to 0.3 MPa and hold for 3 minutes or longer Pressure drop check No pressure drop found
Pressure drop found
Locate and correct leaks. (Allows discovery of major leaks)
Pressure drop found
Locate and correct leaks. (Allows discovery of major leaks)
Pressure drop found
Locate and correct leaks. (Allows discovery of minor leaks)
Pass
Step 2
Pressurize to 0.5 MPa and hold for 5 minutes or longer
Pressure drop check No pressure drop found
Pass
Step 3
Pressurize to 3.3 MPa and leave for 24 hours Pressure drop check No pressure drop found
Pass
Discharge nitrogen gas and proceed to next work
Convenience Pack
(Z0157)
207
Common Item
Si81-503
Time Chart
Measurement of outside temperature
3.5
Measurement of outside temperature
MPa Step 3
3.0
Leak check under 3.3 MPa × 24 hours 1
H
*1 Pressure correction If the outside temperature at the time pressurizing is different from the temperature at the time of checking for pressure drop, it is necessary to correct the pressure values since 1˚C of temperature difference causes approximately 0.01 MPa of pressure difference. Correction value = (temperature at the time of pressurization temperature at the time of check) × 0.01
0.5 Step 2
Leak check under 0.5 MPa × 5 minutes
Step 1
Leak check under 0.3 MPa × 3 minutes
0 3 minutes 5 minutes
24 hours (Z0158)
* Pressure values are shown in gauge pressure.
Leak Check Check method
• • •
When a pressure drop is detected in steps 1 to 3 in the previously described work process;
Check by listening.................. Listen attentively for major leaks. Check by touching ................. Touch pipe joints to check for major leaks. Check with soapy water......... Apply soapy water on pipes. Leaks cause soapy water to form bubbles.
For long pipes, it is recommended divide pipes into blocks and conduct an air-tightness test for each block at a time. This allows easier discovery of leaks.
208
Convenience Pack
Si81-503
Common Item
6.4.2 Vacuum Drying 2) What is vacuum drying? Vacuum drying is: “The use of a vacuum pump to vaporize (gasify) the moisture (liquid) inside the pipes and expel it leaving the pipes completely dry inside.” At 1 atm (760 mmHg) the boiling point (evaporating temperature) of water is 100°C but if a vacuum is created inside the pipes using a vacuum pump then the boiling point is rapidly reduced as the degree of the vacuum is increased. If the boiling point is reduced to a level below that of the ambient temperature then the moisture in the pipes will evaporate. Example: With an ambient temperature of 7.2°C, vacuum drying is only possible with a vacuum in excess of 8mmHg. Before attempting vacuum drying, it is important to fully understand how to choose and maintain a vacuum pump.
3) Choosing a vacuum pump The two following points should be borne in mind when selecting a vacuum pump: 1. A pump capable of producing a high degree of vacuum should be chosen. (Capable of producing a vacuum in excess of 5 mmHg) 2. A comparatively high degree of expulsion capacity is required. (approx. 40 L/min) Before starting the vacuum drying operation check the pressure gauge to make sure that the pump is capable of producing a maximum vacuum in excess of 5 mmHg.
Boiling point of water (˚C) 40 30 26.7 24.4 22.2 20.6 17.8 15.0 11.7 7.2 0
Atmospheric Degree of pressure (mmHg) vacuum (mmHg) 55 –705 36 –724 25 –735 23 –737 20 –740 18 –742 15 –745 13 –747 10 –750 8 –752 5 –755
Oil rotary pumps must have an oil change every 1 to 2 months and the degree of vacuum which the pump is capable of producing must also be checked. (Reference) Types of vacuum pump with respective maximum degree of vacuum Type
Maximum degree of vacuum
Use
Expulsion capacity Vacuum drying
Oil rotary (oil using)
0.02 mmHg
Oilless rotary (No yeed of oil)
10 mmHg 0.02 mmHg
Air expulsion
Suitable
Suitable
50 L/min
Unsuitable
Suitable
40 L/min
Suitable
Suitable
100 L /min
← Many handy pumps fall into this category
Convenience Pack
209
Appendix
Si81-503
7. Appendix 7.1
System Configuration
7.1.1 Electrical System Booster unit Outdoor unit
[Air Net ]
Inverter box ST controller
Public line Instructions to refrigerate/cool
Air conditioning indoor units
Wiring for adapter of a unified remote controller
Modem Monitoring Center
Defrost signal
Defrost control board
Inside temperature
Buzzer unit (option)
(option) DIII net * Showcase interface
Abnormal contact Refrigerator showcase
ELB for defrost heater Monitoring of ELBs
ELB for refrigerator ELB for freezer
(Cooling coil) (Freezer reach-in) Freezer showcase
*A single showcase interface makes it possible to monitor a maximum of three units of showcases.
7.1.2 Refrigerant System While in heating mode, heat recovery operation is conducted through the use of waste heat from refrigerating unit (showcase)
[Air conditioning indoor unit] [Outdoor unit]
High-efficiency operation under the optimum control of evaporating temperature Refrigeration (-10˚C), freezing (-40˚C), air conditioning (5˚C)
Air conditioning at 5˚C
Optimum high-pressure control with a DC inverter for the outdoor unit fan
Refrigeration at -10˚C
[Booster unit]
Selection of the number of units out of three compressors and optimum capacity control with the DC inverter.
Freezing at -40˚C • For a freezing zone, a two-stage compression system is adopted, thus accomplishing operation with a higher degree of efficiency under control at a low pressure-ratio. • The adoption of the DC inverter improves the efficiency.
[Refrigerator showcase] [Freezer showcase] Convenience Pack
Refrigeration at -10˚C Freezing at -40˚C
210
Conventional system
Moller Chart
+55˚C Cooling at +5˚C
Shortening the length of piping in the freezer side accomplishes the reduction of pressure loss in the piping.
+55˚C Pressure ratio: 3.98 Pressure ratio: 7.1 Pressure ratio: 2.65
+55˚C
+55˚C
Refrigeration at -10˚C
Pressure ratio: 7.1 Cooling at +5˚C
Pressure ratio: 3.98
Freezing at -40˚C Pressure ratio: 18.8 Freezing system
Refrigeration system
Cooling system
Convenience Pack
Si81-503
Appendix
7.1.3 Indoor Unit Variation Type
Number
4 types
1 or 2
Ceiling Mounted Cassette Type (Multi Flow)
Ceiling Mounted Duct Type
Ceiling Mounted Built-In Type
Ceiling Suspended Type
Indoor Units to be connected Type
Model Name
Power Supply
Ceiling Mounted Cassette Type (Multi Flow)
FXF
100L
125L
—
—
Ceiling Suspended Type
FXH
100L
—
—
— VE
Ceiling Mounted Built-In Type
FXS
100L
125L
—
—
Ceiling Mounted Duct Type
FXM
100L
125L
200L
250L
VE: 1ø, 220~240V, 50Hz, 1ø, 220V, 60Hz Combination Type
Unit
100
2
125
2
Notes) • Connecting a single unit of type 100 or type 125 only is not allowed. • Use of the multi system for connecting different forms of equipment is possible.
200
1
250
1
• Two units connected in combination should be used for air-conditioning a single space.
*The combination which doesn’t connect the Indoor Unit (Refrigerator, Freezer only) is also possible.
Convenience Pack
211
Appendix
Si81-503
7.1.4 Convenience Pack System Example [Open Showcase for Cold Storage]
Snack Shop
Flexible Chilled Store
[Outdoor Unit]
Fresh Meat
Fresh Meat
[Booster Fan] [Air Curtain]
Milk & Daily
Entrance
[Cassette Type Indoor A/C Unit]
[Built-in Type Indoor A/C Unit] or Duct type
Drinks Checkouts Frozen
Beer & Wine
[Reach-in Freezer] [ST Controller] [Booster Unit] [Inverter Box]
[Open Showcase for Cold Storage]
Maximum number of equipment that can be connected to a single ST controller. For a single Outdoor Unit System
Number of Systems
Total Number of Equipment
Outdoor Units
1
3
3
Booster Unit and Inverter Box
2
3
6
Defrost Control Board
1
3
3
Showcase Inter Face
5
3
15
Indoor Units
2
3
6
Refrigerator Showcase
6
3
18
Freezer Showcase
2
3
6
General Adapter
—
1
Total Number
—
58
212
Convenience Pack
Si81-503
7.2
Appendix
Standard Specifications
7.2.1 Outdoor Unit Model Power Supply
LRYCP14DY1 3 phase, 50 Hz, 380-415V Air Conditioning Side Refrigeration Side
kW kW
Air Conditioning Side
kW
Refrigeration Side Casing Color Standard Specification Units Capacity Control Outline Dimensions H×W×D Heat Exchanger Type Piston Displacement Compressor Number of Revolutions Motor Output × Number of Units Starting System Type Motor Output Fan Air Flow Rate
kW
1 Cooling Capacity
2 Heating Capacity
% mm
m3/h r.p.m kW
kW m3/min
Drive Refrigerant Piping
Liquid Piping
Air conditioning side Refrigeration side 3 Operating Sound Connecting Pipes
mm mm mm dBA
Safety devices Defrost System Refrigerant Name Refrigerant Charge Volume Control Refrigerating Oil
Refrigerating Oil Name Charge Volume
Mass Standard Accessories Drawing No.
kg
L kg
14.0 16.5 24.0 (Refrigerant side is at the load of 16.5kW at the case of 100% Heat Recovery operation.) 16.5 Ivory white (5Y7.5/1) 18~115/18~122 1440 × 1280 × 690 Cross fin coil Hermetically sealed scroll type 19.36 + 14.68 + 14.68 6480, 2900 2.2 + 3.6 + 4.5 Direct-on-line (Inverter system) Propeller fan 0.28 + 0.30 190 Direct drive φ15.9 C1220T (Brazing connection) φ28.6 C1220T (Brazing connection) φ28.6 C1220T (Brazing connection) 57.5 High Pressure Switch, Fan Driver Overload Protector, Overcurrent Relay, Inverter Overload Protector, Fusible Plug Hot gas system R-407C 14.3 Electronic expansion valve DAPHNE FVC68D 1.9 + 1.6 + 1.6 + 1.0 330 Installation Manual,Operation Manual, Connection Pipes, Clamping Materials,Wiring Materials, Caution Label, Declaration of Conformity 4D050383
Notes: 1 •Air conditioning Indoor temp. : 27°C DB, 19°C WB •Refrigeration Saturated suction temp. : –10°C / Outdoor temp. : 32°C DB / Equivalent piping length : 7.5 m, level difference : 0 m. 2 •Air conditioning Indoor temp. : 20°C DB •Refrigeration Saturated suction temp. : –10°C / Outdoor temp. : 7°C DB, 6°C WB / Equivalent piping length : 7.5 m, level difference : 0 m. 3 The operating sound is measured in anechoic chamber.
Convenience Pack
Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3
213
Appendix
Si81-503
7.2.2 Booster Unit Model LCBKP1AR Power Supply 3 phase, 50 Hz, 380/400/415 V 1 2 Cooling Capacity kW 1.1 Casing Color Standard Specification Units Ivory white (5Y7.5/1) Capacity Control % — Outline Dimensions H×W×D mm 480 × 320 × 260 Heat Exchanger — Model — Type Hermetic swing type 3 9.42 Piston Displacement m /h r.p.m 6060 Compressor Number of Revolutions Motor Output × Number of Units kW 1.0 Crankcase heater W — Starting System Direct-on-line starting (Inverter system) Model — Type — Motor Output × Number of Units kW — Fan — Air Flow Rate m3/min External static pressure Pa — Drive — Model Name of Inverter Box BRR2A1R Casing Color Ivory white (5Y7.5/1) Outline Dimensions H × W × D mm 490 × 783 × 3.63 Model — Type Propeller fan Motor Output × Number of kW 0.007 Units Inverter Box Fan 2.4 Air Flow Rate m3/min External static pressure Pa — Drive Direct drive 3 Operating Sound dBA 43 Mass kg 80 Standard Accessories Installation manual, Clamps Discharge Side C1220T mm φ 9.5 (Brazed connection) (Connection Method) Refrigerant Pipes Suction Side C1220T mm φ15.9 (Brazed connection) (Connection Method) 3 Operating Sound dBA 42 Safety devices Inverter Overload Safety Device, and High Pressure Switch Refrigerant Name R-407C Refrigerant Charge — Refrigerating Oil Name DAPHNE FVC50K Refrigerating Oil Charge Volume L 0.73 Working Temperature Inside °C –25~–15 Use Refrigerating Unit Conditions Outdoor Temperature °C –10~45 Mass kg 28 Standard Accessories Insulation material, Clamps, Refrigerant filter Notes: 1. 1 Operating conditions: Equivalent temperature of suction pressure –40°C / Equivalent length of piping 1 m, Difference in elevation 0 m. 2 Capacity of the connected indoor unit should be at least 600 W. 2. 3 Operating sound is calculated in terms of anechoic room. If the operating sound is actually measured with an outdoor unit installed, the sound will become larger than normal since it is subjected to an ambient noise or its echo, in most cases.
214
Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3
Convenience Pack
Si81-503
Appendix
7.2.3 Indoor Unit Ceiling Mounted Cassette Type (Multi-Flow) Model +1 Cooling Capacity (19.5°CWB)
kcal/h Btu/h kW
FXF100LVE 10,000 39,600 11.6
FXF125LVE 12,500 49,500 14.5
+2 Cooling Capacity (19.0°CWB)
kW
11.2
14.0
+3 Heating Capacity
kcal/h Btu/h kW mm
10,800 42,700 12.5 Galvanized Steel Plate 288×840×840
13,800 54,600 16.0 Galvanized Steel Plate 288×840×840
mm
2×12×1.2
2×12×1.2
m²
0.544 QTS46C17M Turbo Fan
0.544 QTS46C17M Turbo Fan
W
120×1
120×1
m³/min cfm
26/21 918/741 Direct Drive Microprocessor Thermostat for Cooling and Heating
30/24 1,059/847 Direct Drive Microprocessor Thermostat for Cooling and Heating
Polyurethane Form
Polyurethane Form
kg
φ9.5 (Flare Connection) φ19.1 (Flare Connection) VP25 External Dia. 32 Internal Dia. 25 29
φ9.5 (Flare Connection) φ19.1 (Flare Connection) VP25 Dia. 32 ( External Internal Dia. 25 ) 29
dBA
39/33
42/36
Fuse Electronic Expansion Valve BYCP125D-W1 White (10Y9/0.5)
Fuse Electronic Expansion Valve BYCP125D-W1 White (10Y9/0.5)
45×950×950
45×950×950
Casing Dimensions: (H×W×D) Rows×Stages× Coil (Cross Fin Pitch Fin Coil) Face Area Model Type Motor Output × Number of Units Fan Air Flow Rate (H/ L) Drive Temperature Control
Sound Absorbing Thermal Insulation Material Liquid Pipes mm Piping Gas Pipes mm Connecti ons Drain Pipe mm Machine Weight (Mass) +5 Sound Level (H/L) (220V)(cooling) Safety Devices Refrigerant Control Model Panel Color Decorati Dimensions: on Panels (H×W×D) (Option) Air Filter Weight
Standard Accessories
Drawing No.
mm
kg
(
)
Resin Net Resin Net (with Mold Resistant) (with Mold Resistant) 5.5 5.5 Operation manual, Installation manual, Operation manual, Installation manual, Paper pattern for installation, Drain hose, Paper pattern for installation, Drain hose, Clamp metal, Washer fixing plate, Sealing Clamp metal, Washer fixing plate, Sealing pads, Clamps, Screws, Washer for pads, Clamps, Screws, Washer for hanging bracket, Insulation for fitting. hanging bracket, Insulation for fitting. 3D034210A
Notes: +1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. +2 Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. +3 Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length; 7.5m, level difference; 0m. (Heat pump only) 4 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. +5 Operation sound is measured in an anechoic chamber.
Convenience Pack
Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3
215
Appendix
Si81-503
Ceiling Suspended Type Model +1 Cooling Capacity (19.5°CWB)
kcal/h Btu/h kW
FXH100LVE 10,000 39,600 11.6
+2 Cooling Capacity (19.0°CWB)
kW
11.2
+3 Heating Capacity
kcal/h Btu/h kW mm
10,800 42,700 12.5 White (10Y9/0.5) 195×1,400×680
mm
3×12×1.75
m²
0.293 3D12K2AA1 Sirocco Fan
W
130×1
m³/min cfm
25/19.5 883/688 Direct Drive Microprocessor Thermostat for Cooling and Heating
Casing Color Dimensions: (H×W×D) Rows×Stages× Coil (Cross Fin Pitch Fin Coil) Face Area Model Type Motor Output × Number of Units Fan Air Flow Rate (H/ L)
Drive Temperature Control Sound Absorbing Thermal Insulation Material Air Filter Liquid Pipes mm Piping Gas Pipes mm Connecti ons Drain Pipe mm Machine Weight (Mass) +5 Sound Level (H/L) (220V) Safety Devices Refrigerant Control Standard Accessories Drawing No.
Glass Wool
kg
Resin Net (with Mold Resistant) φ9.5 (Flare Connection) φ19.1 (Flare Connection) VP20 (External Dia. 26 Internal Dia. 20) 33
dBA
45/37 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Paper Pattern for Installation, Drain Hose, Clamp Metal, Insulation for Fitting, Clamps, Washers. 3D035297
Notes: +1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. +2 Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. +3 Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length; 7.5m, level difference; 0m. (Heat pump only) 4 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. +5 Operation sound is measured in an anechoic chamber.
216
Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3
Convenience Pack
Si81-503
Appendix
Ceiling Mounted Built-In Type Model +1 Cooling Capacity (19.5°CWB)
kcal/h Btu/h kW
FXS100LVE 10,000 39,600 11.6
FXS125LVE 12,500 49,500 14.5
+2 Cooling Capacity (19.0°CWB)
kW
11.2
14.0
+3 Heating Capacity
kcal/h Btu/h kW mm
10,800 42,700 12.5 Galvanized Steel Plate 300×1,400×800
13,800 54,600 16.0 Galvanized Steel Plate 300×1,400×800
mm
3×14×1.75
3×14×1.75
m²
0.338 3D18H2A Sirocco Fan
0.338 3D18H2A Sirocco Fan
W
225×1
225×1
m³/min
28/22
38/28
m³/min
28/21
38/27
Pa
107-75
78-39
Pa
136-83
78-20
Direct Drive Microprocessor Thermostat for Cooling and Heating
Direct Drive Microprocessor Thermostat for Cooling and Heating
Glass Fiber
Glass Fiber
kg dBA
Resin Net (with Mold Resistant) φ9.5 (Flare Connection) φ19.1 (Flare Connection) VP25 (External Dia. 32 Internal Dia. 25) 51 43/37 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve BYBS125DJW1 White (10Y9/0.5)
Resin Net (with Mold Resistant) φ9.5 (Flare Connection) φ19.1 (Flare Connection) VP25 (External Dia. 32 Internal Dia. 25) 52 46/41 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve BYBS125DJW1 White (10Y9/0.5)
mm
55×1,500×500
55×1,500×500
Casing Dimensions: (H×W×D) Rows×Stages× Coil (Cross Fin Pitch Fin Coil) Face Area Model Type Motor Output × Number of Units Air Flow (50Hz) Rate Fan (60Hz) (H/L) +4 (50Hz) Static external (60Hz) pressure Drive Temperature Control
Sound Absorbing Thermal Insulation Material Air Filter Liquid Pipes mm Piping Gas Pipes mm Connections Drain Pipe mm Machine Weight (Mass) +7 Sound Level (H/L)(220V) Safety Devices Refrigerant Control Model Decoration Panel Color Panel Dimensions: (Option) (H×W×D) Weight
Standard Accessories
Drawing No.
kg
6.5 6.5 Operation Manual, Installation Manual, Operation Manual, Installation Manual, Paper Pattern for Installation, Drain Paper Pattern for Installation, Drain Hose, Clamp Metal, Insulation for Fitting, Hose, Clamp Metal, Insulation for Fitting, Sealing Pads, Clamps, Screws, Sealing Pads, Clamps, Screws, Washers. Washers. 3D036931
Notes: +1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. +2 Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. +3 Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length; 7.5m, level difference; 0m. (Heat pump only) +4 Static external pressure is changeable to change over the connectors inside electrical box, this pressure means “High static pressure-Standard -Low static pressure”. +5 Static external pressure is changeable to change over the connectors inside electrical box, this pressure means “High static pressure-Standard”. 6 Capacities are net, including a deduction for cooling (an additional for heating) for indoor fan motor heat. +7 Operation sound is measured in an anechoic chamber.
Convenience Pack
Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3
217
Appendix
Si81-503
Ceiling Mounted Duct Type Model +1 Cooling Capacity (19.5°CWB)
kcal/h Btu/h kW
FXM100LVE 10,000 39,600 11.6
FXM125LVE 12,500 49,500 14.5
FXM200LVE 20,000 78,400 23.0
FXM250LVE 25,000 98,300 28.8
+2 Cooling Capacity (19.0°CWB)
kW
11.2
14.0
22.4
28.0
+3 Heating Capacity
kcal/h Btu/h kW
mm
10,800 42,700 12.5 Galvanized Steel Plate 390×1,110×690
13,800 54,600 16.0 Galvanized Steel Plate 390×1,110×690
21,500 85,300 25.0 Galvanized Steel Plate 470×1,380×1,100
27,000 107,000 31.5 Galvanized Steel Plate 470×1,380×1,100
mm
3×16×2.0
3×16×2.0
3×26×2.0
3×26×2.0
m²
0.319 2D11/2D3AG1VE Sirocco Fan
0.319 2D11/2D3AF1VE Sirocco Fan
0.68 D13/4G2DA1×2 Sirocco Fan
0.68 D13/4G2DA1×2 Sirocco Fan
W
270×1
430×1
380×2
380×2
m³/min cfm
29/23 1,024/812
36/29 1,271/1,024
58/50 2,047/1,765
72/62 2,542/2,189
Pa
157/172-98/98 +4
191/245-152/172 +4
221/270-132 +4
270/191-147 +4
Direct Drive Microprocessor Thermostat for Cooling and Heating
Direct Drive Microprocessor Thermostat for Cooling and Heating
Direct Drive Microprocessor Thermostat for Cooling and Heating
Direct Drive Microprocessor Thermostat for Cooling and Heating
Glass Fiber
Glass Fiber
Glass Fiber
Glass Fiber
Casing Dimensions: (H×W×D) Rows×Stages× Coil (Cross Fin Pitch Fin Coil) Face Area Model Type Motor Output × Number of Units Fan
Air Flow Rate (H/L) External Static Pressure 50/ 60Hz Drive
Temperature Control Sound Absorbing Thermal Insulation Material Air Filter Liquid Pipes
mm
Gas Pipes Piping Connections
mm
Drain Pipe
mm
Machine Weight (Mass) +7 Sound Level (H/L) (220V) Safety Devices Refrigerant Control
Standard Accessories
Drawing No.
kg dBA
+5 φ9.5 (Flare Connection) φ19.1 (Flare Connection) VP25 External Dia. 32 Internal Dia. 25 63 43/39 Fuse, Thermal Fuse for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Drain Hose, Clamp Metal, Insulation for Fitting, Sealing Pads, Clamps, Screws.
(
+5 +5 φ9.5 (Flare φ12.7 (Flare Connection) Connection) φ19.1 (Flare φ25.4 (Brazing Connection) Connection) VP25 External Dia. 32 PS1B Internal Dia. 25 65 137 45/42 48/45 Fuse, Fuse, Thermal Fuse for Thermal Protector Fan Motor for Fan Motor Electronic Electronic Expansion Valve Expansion Valve Operation Manual, Installation Manual, Operation Manual, Drain Hose, Clamp Installation Manual, Metal, Insulation for Sealing Pads, Fitting, Sealing Connection Pipes, Pads, Clamps, Screws, Clamps. Screws. 3D034584A
) (
)
Notes: +1 Indoor temp. : 27°CDB, 19.5°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. +2 Indoor temp. : 27°CDB, 19.0°CWB / outdoor temp.: 35°CDB / Equivalent piping length: 7.5m, level difference: 0m. +3 Indoor temp. : 20°CDB / outdoor temp.: 7°CDB, 6°CWB / Equivalent piping length; 7.5m, level difference; 0m. (Heat pump only) +4 External static pressure is changeable to change over the connectors inside electrical box, this pressure means "High static pressure-Standard". +5 Air filter is not standard accessory, but please mount it in the duct system of the suction side. Select its colorimetric method (gravity method) 50% or more. 6 Capacities are net, including a deduction for cooling (an addition for heating) for indoor fan motor heat. +7 Operation sound is measured in an anechoic chamber.
218
+5 φ12.7 (Flare Connection) φ28.6 (Brazing Connection) PS1B 137 48/45 Fuse, Thermal Protector for Fan Motor Electronic Expansion Valve Operation Manual, Installation Manual, Sealing Pads, Connection Pipes, Screws, Clamps.
Conversion Formulae kcal/h=kW×860 Btu/h=kW×3412 cfm=m³/min×35.3
Convenience Pack
Si81-503
7.3
Appendix
Wiring Diagrams 3D049274C
7.3.1 Outdoor Unit: LRYCP14DY1
Convenience Pack
219
Appendix
Si81-503
3D047412C
7.3.2 Inverter Box: BRR2A1R
220
Convenience Pack
Si81-503
Appendix
7.3.3 Defrost Control Board: BRR3A1V1R
Convenience Pack
221
Appendix
Si81-503
7.3.4 Indoor Unit Ceiling Mounted Cassette Type (Multi Flow) FXF100L / 125LVE
3D033829A
222
Convenience Pack
Si81-503
Appendix
Ceiling Suspended Type FXH100LVE
3D034052A
Convenience Pack
223
Appendix
Si81-503
Ceiling Mounted Built-In Type FXS100L / 125LVE
3D035467
224
Convenience Pack
Si81-503
Appendix
Ceiling Mounted Duct Type FXM100L / 125LVE
3D034209A
Convenience Pack
225
Appendix
Si81-503
FXM200L / 250LVE
3D034363
226
Convenience Pack
Si81-503
8.
Parts List
Parts List Model LRYCP14DY1 LCBKP1AR BRR2A1R BRR3A1V1R BRP5A1V1
Page 228 235 237 240 241
Reference for using this Parts List 1. For ordering, specify Model Name, Part No., Part Name, Specification (Type), and Number Required. 2. For the supply of parts, we may supply you with equal or substitution parts due to improvement in the specification or discontinuation of production. In this case, we will provide the Procedure for replacement of spare parts with the parts, where possible. For easy-handling parts, however, we may provide no Procedure for replacement with these parts, which are also subject to change without advance notice. 3. As to parts that are not listed in this Parts List and have no Part No., we do not always have these parts in ready stock. Consequently, we will take number of days to ship them and submit a quotation for them on a case-by-case basis. 4. Parts marked with are safety parts, which are especially important to maintain safety. Therefore, be sure to use specified parts for the replacement. 5. General-purpose marketed parts (e.g. bolts and nuts) are not listed in this Parts List. Convenience Pack
227
Parts List
8.1
228
Si81-503
LRYCP14DY1
Convenience Pack
Si81-503
Convenience Pack
Parts List
229
Parts List
Si81-503
LRYCP14DY1 No.
Index Parts No.
Parts Name
A1
A
1646416
SCROLL COMPRESSOR
A2
A
1646423
SCROLL COMPRESSOR
A3 A4
0031561 1625318
A6 A7 A8 A9 B1 B1-1 B1-2 B2 B2-1
1371123 1233524 1233531 1310832 1274657 1315983 1104323 1645381 1710300
VIBRATION ISOLATOR MOUNTING BOLT, COMPRESSOR SOUND INSULATOR (BODY) SOUND INSULATOR (UPPER) SOUND INSULATOR (TOP) TERMINAL COVER CROSS-FIN CONDENSER ASS'Y DISTRIBUTOR CLAMP, REF. PIPING LIQUID RECEIVER ASS'Y FUSIBLE PLUG
C
B3
Drawing No.
Specification
JT1FAVDKSY R@P3 JT170FAKSY E@P3 4PC01010-1 4P158863-1 3P090035-1 4P068871-1 3P070460-1 2PC04894-1 2P057592-4 3P091322-1 4PA28814-1 3P158997-1 3SA27106-3
FOUR WAY VALVE LINE ASS'Y
2P157635-1
2
9
CA-REYP20KJY1
RV-LRYCP14DY1 FPGD-3D 70-75C NPTF1/8-27
1411502 1420582
BODY, FOUR WAY VALVE BODY, FOUR WAY VALVE
3SA52066-1 3SA52078-1
VT60100 VT40100
B3-3
A
1296347
HIGH PRESSURE SWITCH
3P088148-1
ACB-1TB24W OFF:3.25MPa, ON:2.5MPa LCVB-5 BCV-1306DY
B3-12 B3-13 B3-14
0948676 1371325 0132279
B3-15 B B3-16 B3-17 B3-18 B3-19 A
1233625 261104 1483545 0509893 1068441
B3-20 B4 B4-1 B4-2 B4-3 B4-4 B4-5
A
1259665
B A A
1405800 0684220 1405817 1440740 1296347
B4-6
230
292637
CHECK VALVE (LINE TYPE) CHECK VALVE REFRIGERANT FILTER STOP VALVE (GAS LINE) CONNECTING FLANGE O-RING, STOP VALVE HEX. BOLT, STOP VALVE GAUGE JOINT WITH CHECK VALVE SERVICING PORT ASS'Y STOP VALVE PACKING, CONNECTING FLANGE PRESSURE CONTROL VALVE CONNECTING FLANGE PIPING FIXTURE HEX. BOLT, STOP VALVE LOW PRESSURE SWITCH COIL, FOUR WAY VALVE DISCHARGE PIPE ASS'Y OIL SEPARATOR ASS'Y CHECK VALVE (LINE TYPE) BODY, SOLENOID VALVE COIL, SOLENOID VALVE (HOT GAS) HIGH PRESSURE SWITCH
GAUGE JOINT WITH CHECK VALVE
3SA27008-1 3P096783-1 3P007858-1 2SC00035-11 4P032577-1 3SK19002-17 4SA02021-35 3SA58023-1
3 3 3 3 1 1 1 1 1 1
B B
0684220 1393729 0975539 1230570 1140615 1121164 0976006 292637
M2C, M3C
9
B3-1 B3-2
B3-4 B3-5 B3-6 C B3-7 B3-8 B3-9 C B3-10 B3-11
Q'ty/Unit LRYCP Remark 14 DY1 M1C 1
VSAD24C-F D25.4CuT HNBR-P22A M10 VCG2SA D6.4xL55
1 2 1 1 2 1 1 1 1 2 2
3SA58020-2 VCS2S D6.4xL49 3P085178-1 VSMB(D)-20F D25.4 4SK20053-12 VSH22 OD30xID23xt0.8
1 1
3SA51002-1 NI40054-2 4P114454-1 4SK01006-40 3SA45020-3
1 1 1 2
LRV(B)-3 VSH-22 D25.4CuT
M10x40 LCB-JA92 OFF/ON:0.0/ 0.06MPa L=2000 3SA52037-11 LB6412CAJ L=1000 2P176370-1 3P085462-1 3SA27008-1 LCVB-5 3SA52062-1 3SA52043-13 AC200V 3P088148-1 ACB-JB104 OFF:3.25MPa, ON:2.5MPa 3SA58023-1 VCG2SA D6.4xL55
Y1R Y2R, Y3R S3PH
1
1
S1PL
3 1 1 1 2 2
Y1,2,3R
2
Y4S,Y6S Y4S,Y6S S1PH, S2PH
1
Convenience Pack
Si81-503
Parts List
LRYCP14DY1 No.
Index Parts No.
B4-7 C B4-8 B4-9 B4-10 B4-11 B4-12 B4-13 B5 B5-1 B5-2
C
232005 1646430 1405848 1021714 0819134 1646447 1710317
0705398 292637
B6 B6-2 B6-3 B6-4 B6-5 B6-6 B6-7 B6-8 B6-9 B6-10 B6-11 B6-12 B6-13 B6-14 B6-15 B6-17
C B
1710324 1233632 1218549 0948676 1710331 1710355 1646461 1710362 0650304 1264100 1233771 1076389 0386216 0622107 0629610
B6-18 B B6-19 C B6-20 A
1405817 231501 1440757
B6-21 A
1440771
B6-25 B6-26 B6-27 B9 B9-1 B9-2 B9-3
1710379 1710386 1706628
B9-4 B9-5 B9-6 B9-7
B B
A A
1585922 1585939 1141074 C
B10 B10-1 B
1121164 1140615 0976006 292637
1405817
Convenience Pack
Parts Name REFRIGERANT FILTER PIPE FIXING PLATE PIPE FIXING PLATE TUBE CLAMP TUBE CLAMP PIPE FIXING PLATE PLATE, PIPE FIXING (SOLENOID VALVE) SUCTION PIPE ASS'Y REFRIGERANT FILTER GAUGE JOINT WITH CHECK VALVE LIQUID PIPE ASS'Y (MOTORIZED VALVE) STOP VALVE BODY, MOTORIZED EXP. VALVE BODY, MOTORIZED EXP. VALVE SERVICING PORT ASS'Y FIXTURE PIPING FIXTURE PIPING FIXTURE STOP VALVE WATER PROOF CAP COIL, MOTORIZED EXP. VALVE COIL, MOTORIZED EXP. VALVE CHECK VALVE CHECK VALVE SIGHT GLASS BODY, SOLENOID VALVE (HOT GAS) BODY, SOLENOID VALVE REFRIGERANT FILTER COIL, SOLENOID VALVE (RECEIVER GAS PURGE) COIL, SOLENOID VALVE (HOT GAS) NUT TUBE GASKET STOP VALVE ASS'Y (GAS) SET PLATE, STOP VALVE SET PLATE, STOP VALVE STOP VALVE ASS'Y O-RING, STOP VALVE CONNECTING FLANGE HEX. BOLT, STOP VALVE GAUGE JOINT WITH CHECK VALVE OIL EQUALIZER TUBE ASS'Y BODY, SOLENOID VALVE
Drawing No. R3269031-3 3P085507-4 4P085564-1 R3689392-1 R3689392-8 4P160060-1 4P176061-1 3P140601-1 3PA57469-1 3SA58023-1
Specification FI-222 t=1.0 D6.4 D22.2 t=1.0
Q'ty/Unit LRYCP Remark 14 DY1 1 1 2 3 2 1 1 1 1
VCG2SA D6.4xL55
1
2P167386-1
1
3SA58083-1 3SA50043-1 3SA52029-2 3SA58020-2 4P167332-1 3P167350-1 4P160895-1 3SA58084-1 4PA55176-1 3SA52026-4 3SA50044-1 4SA27011-1 4SA27006-1 3PA51270-3 3SA52001-1KI 3SA52062-1 R3269032-3 3SA52043-14
1 1 1 1 1 1 1 1 2 1 1 2 1 1
EKV-40D77 EKV-26D35 VCS2S D6.4xL49 t=2.3
for injection DKV-MOZS188B0 BCV-804DY BCV-603DYQ60 SGN12S NEV-603DXF
Y1E Y2E
Y2E Y1E
1
Y7S
1 1
Y8S
1
Y7S
3SA52043-17 AC200V COIL
1
Y8S
3P176950-5 3P176951-5 3P176952-5 3P127659-1 3P020549-4 t=2.3 4PA63420-4 t=2.3 2SC00035-16 VSAD24C-FL4 D25.4CuT 3SK19002-17 HNBR-P22A 4P032577-1 4SA02021-35 M10 3SA58023-1 VCG2SA D6.4xL55
2 2 2 1 1 1
3P167277-1 3SA52062-1
FI-344 1/2B D12.7CuT AC220-240V 50Hz
1 1 1 2 1 1 4
Y1-Y3, Y5S
231
Parts List
Si81-503
LRYCP14DY1 No.
Index Parts No.
B10-2 A
1440771
B10-3 B10-4 B10-5 B10-6 B11 C C1 C2 C3 C4 E1
1710393 1710401 1706635 1405956 1453599 1230695 1233670 1248401 1248418
E2 E2-1
A A
E3 E3-1 E4
Parts Name
Drawing No.
1645297 003065J
COIL, SOLENOID VALVE (HOT GAS) NUT TUBE GASKET PIPE FIXING PLATE DRIER FAN BLADE WASHER FLANGE NUT PLAIN WASHER ELECTRIC COMPONENTS PARTS (LEFT) PRINTED CIRCUIT ASS'Y FUSE
3SA52043-17 AC200V COIL
2P147830-5 4SA42006-4
EB0558 250V 10A
1
A A
1645305 003065J
PRINTED CIRCUIT ASS'Y FUSE
2P147830-7 4SA42006-4
EB0560 250V 10A
1
B
0758121
MAGNETIC SWITCH
3SA42291-4SA
CLK-20JT-P12 220-240V O.C13A
3P176950-2 3P176951-2 3P176952-2 4P089785-1 3P117510-1 3P062752-1 4P065419-1 4P069134-1 4P069135-1 2P157237-1
E5
C
1238846
TRANSFORMER
3EA74055-1
E6
B
0706810
TERMINAL BLOCK
E7 E8 E9 E10 E11 E12 E13
B B B
1020223 0278430 1405994 620637 1229486 1551594 1646478
E14
B
0024734
E15
B
0999489
CLAMP, WIRE HARNESS WIRE CLIP TERMINAL BLOCK POWER RELAY MAGNETIC RELAY TOGGLE SWITCH ELECTRIC COMPONENT (SWITCH BOX) THERMISTOR (FOR OUTDOOR AIR) THERMISTOR (FOR DISCHARGE LINE) LOCKING CARD SPACER CONNECTOR, SHORT CIRCUIT
3SA44004-1KU NE41015-11 4PA04746-1 4P054318-3 MI37052-5 3P070497-1 ACS030330-1 4P157142-1
E16 E17
699711 0654584
E18 E19 E20
0317498 1056859 1090347
E21 E22 E23 E24 E25 E26 E27 E28 232
Specification
Q'ty/Unit LRYCP Remark 14 DY1 Y1-Y3, 4 Y5S 3 3 3 1 1 2 2 2 2
B B B
A
for solenoid valve P55L11F
1
1
A1P F1U, F2U A2P F1U, F2U K2S, K2M, K3S, K3M T1R, T2R X1M
8 10 1 1 1 1
X3M K8R K9R S1S
2
2
2
2 DT100-4P 4P 600V 100A (L1-L3,N) NK-2N KST20-6P(1-4,W1,W2) LY2F220V AC220V (2c) MY2F AC220/240V ATE21W
1
3SA48003-1
ST8603-1 L=250
1
R1T
3SA48009-5
ST9701A-5 L=1000
1
R3-1T
R3428091-5 4PA05237-3
KGLS-12S L=19.1
34
4PA28895-1 4P004293-3 3SA48009-6
1
0012027 0073527 1210831 1198397 1233757 0807148 1227916
CLAMP, THERMISTOR TERMINAL BLOCK THERMISTOR (FOR DISCHARGE LINE) THERMISTOR (FOR SUCTION) THERMISTOR (FOR COIL) WIRE HARNESS (FAN MOTOR) TAPPING SCREW LOCKING CARD SPACER GROUNDING TERMINAL CURRENT SENSOR
3SA48004-6 3SA48004-4 3PA50305-28 4PA50121-12 4P071700-2 4PA52362-16 M8x16 3P072870-1 EC0074
1 1 1 6 8 1
R4-1T R4-2T
2
A6P, A7P
0665786
WASHER
4PA50120-8
1
KST20-3P-1 PTM-312-D1-6 ST9701-6 L=1250 ST8604A-6 L=1250 ST8604A-4 L=800
1 1
A2PX4A
1
X4M R3-2T
Convenience Pack
Si81-503
Parts List
LRYCP14DY1 No. E30 E31
Index Parts No. A A
E33 E34 E41
Parts Name
Drawing No.
1385610 1385627
HIGH PRESSURE SENSOR LOW PRESSURE SENSOR
3P098771-1 3P098772-1
0705499 1301249
COVER, SWITCH BOX COVER, SWITCH BOX ELECTRIC COMPONENTS PARTS (RIGHT) INVERTER ASS'Y
3PA55041-1 3P074648-1 2P157284-1 2P160656-1 3P087134-1 R3421240-1KU MI37503-4
E42
A
1645312
E43 E44
B
1301427 0706687
E45
B
0713508
REACTOR TERMINAL BLOCK, POWER SOURCE MAGNETIC CONTACTOR
A
1646485 1020223 352004 1289488
SWITCH BOX ASS'Y CLAMP, WIRE HARNESS WIRE CLIP PRINTED CIRCUIT (FAN MOTOR )
2P157183-1 NE41015-11 4PA04745-1 2P085627-1
ADDRESS SETTING ADAPTOR ADDRESS SETTING ADAPTOR NOISE FILTER FUSE FERRITE CORE WIRE HARNESS (INV. COMP.) LINE FILTER WIRE HARNESS (COMP.) LINE FILTER WIRE HARNESS (COMP.) LINE FILTER DC FAN MOTOR
4P070101-1 4P070101-2 3P087133-1 4SA42006-4 3EB76042-1 3P157879-1 3PA56685-1 3P157888-1 3PA56685-1 3P157888-2 3PA56685-1 3P087303-1
E46 E47 E48 E49 E50 E51 E53 E53-1 E55 E61 E61-1 E62 E62-1 E63 E63-1 E65
A A A A C
C A
1233858 1233865 1301371 003065J 1134797 1646492 0645270 1646500 0645270 1646517 0645270 1289440
E66
A
1289457
DC FAN MOTOR
3P070116-2
E68
A
670104A
FUSE
F1 F2 F3 F4 F5 F6 F6-1 F6-2 F8
0199126 0199140 0192651 0199164 0705754 1285664 1233889 1233904 0199119
F9 F10 F11 F12 F13 F14 F16
0309884 0309860 0621236 0192668 1586002 0565134 1483709
FRONT PLATE (UPPER RIGHT) FRONT PLATE (LOWER CENTER) FRONT PLATE (LOWER LEFT) SIDE PLATE (RIGHT) SIDE PLATE (LEFT) AIR DISCHARGE GRILLE ASS'Y TOP PLATE FAN COVER GUARD NET, CROSS-FIN CONDENSER SUPPORTER (FRONT) SUPPORTER (REAR) STAY (UPPER) MOTOR BASE MOUNTING PLATE, COMPRESSOR SET PLATE, STOP VALVE SEALING MATERIAL ASS'Y
C C
Convenience Pack
Specification L=1500 L=1500
Q'ty/Unit LRYCP Remark 14 DY1 1 S1NPH S1NPL, 2 S2NPL 1 1 1
PC0503-1(A) 3PHASE AND 4WIRE SYSTEM REY-46Y DT25-4P 4P 600V 25A
1
A5P
1 1
L1R X2M
CLK-15J20-P6 AC 220240V
1
K1M
NK-2N
1 15 3
PC0005H
2
FN329-Y-1 250V 10A KRCBC160928B for M1C R47/27/15A-D for M2C R47/27/15A-D for M3C R47/27/15A-D UGBTEF-T DC240-380V 8P 300W ECW8601BD DC239380V 6P 280W
1 1 1 2 1 1 1 1 1 1 1 1
A3P, A4P
Z1F Z3C Z1C Z9C Z8C M2F
1
M1F
MI42004-2
2
F3U, F4U
3PA24884-3 3PA24886-1 3PA24886-2 2PA24435-2 2PA24436-10 4P079473-1 1P058460-1 CPLPR:IVORY WHITE 2P061328-1 3PA25485-2
2 1 1 1 1 2 2 2
3PA24887-2 3PA24883-2 3PA52706-1 3PA24896-1 3P133411-1 3PA46573-1 3P091617-1
1 1 1 2 1 1 1
t2.3
2
233
Parts List
Si81-503
LRYCP14DY1 No.
Index Parts No.
F16-1 F17 F18 F19 F20 F26 K1 K3 K3-1 K3-2
1316049 1654239 0199133 0564218 0423968 0219873 1000003 1015182 261104 0132279
K4 K7 K8 K9
0220943 1483723 1483754 1710418
234
Parts Name
Drawing No.
PATCH PLATE ASS'Y BOTTOM FRAME ANCHOR PLATE COVER, STOP VALVE FITTING SPRING, THERMISTOR BUSH NAMEPLATE DAIKIN ATTACHED PIPE (GAS LINE) CONNECTING FLANGE PACKING, CONNECTING FLANGE ATTACHED PIPE (GAS LINE) WIRE HARNESS (1) WIRE HARNESS (2) WIRE HARNESS (3)
4P058431-4 1P156992-17 3PA24437-1 3PA48315-1 4PA38890-1 4PA24821-2 3P004231-1 4PA65797-2 NI40054-2 4SK20053-12 4PA25320-2 3P117080-1 3P117080-2 3P117080-3
Specification
t2.3
D65 D25.4CuT L=102 VSH-22 D25.4CuT VSH22 OD30xID23xt0.8 D28.6CuT L=330
Q'ty/Unit LRYCP Remark 14 DY1 3 1 2 1 4 3 1 2 2 2 2 1 1 1
Convenience Pack
Si81-503
8.2
Parts List
LCBKP1AR
Convenience Pack
235
Parts List
Si81-503
LCBKP1AR No.
Parts No.
Parts Name
A1
1393712
A2 A3
1041352 1038541
A4 A5 A6 A7 B1 B1-1 B1-2 B1-3 B1-4
390204 354120 0943246 1405660 0969736 1405677 232078 1405684
B1-5
0968151
COMPRESSOR (HERMETIC SWING TYPE) VIBRATION ISOLATING RUBBER VIBRATION ISOLATING RUBBER SLEEVE NUT WITH WASHER GUARD BUSH, POWER CORD TERMINAL COVER COVER, ACCUMULATOR DISCHARGE PIPE ASS'Y OIL SEPARATOR ASS'Y CAPILLARY PIPE FILTER (FOR REF.) OIL SEPARATOR MOUNTING PLATE SET PLATE, OIL SEPARATOR
B1-6
1615575
B2 B2-1 B2-2 B2-3 E1 E1-1 E2 F1 F2 F3 F4 F5
0386216 0948676 0120005 1328895 1270453 1328903 1405716 1405730 1405754 1569160 1569177
F6
1569184
F7
1569191
H1
0120005
K1 K2
1329014
BRAND NAME PLATE MANUFACTURER'S LABEL
4P090660-1 4P090457-3
2 1
K3 K4 K5 K6
0693109 1131394
WARNING LABEL LABEL PACKING LABEL WARNING LABEL
4SK60035-2 4SK60003-2 4SK60025-1 4P092066-1
1 1 1 1
236
PRESSURE SWITCH (HIGH PRESSURE PROTECTION) REFRIGERANT PIPING ASS'Y CHECK VALVE SERVICING PORT ASS'Y FILTER (FOR REF.) WIRE HARNESS (SHIELD WIRE) HEAT CONTRACTION TUBE GROUND WIRE BOTTOM PLATE ASS'Y SIDE PANEL PANEL SOUND INSULATION (PANEL) SOUND INSULATION (TOP SURFACE OF SIDE PANEL) SOUND INSULATION (SIDE PANEL) SOUND INSULATION (SIDE PANEL) FILTER (FOR REF.)
Drawing No. 2YC45CXD
Specification
Q'ty/Unit LCBKP Remarks 1 AR M1C 1
2YC45CXD
4PD00534-3 4PD00772-1 R4911377-1 R4911561-1 3PD02517-1 3P094217-1 3P098079-1 3PA65191-1 3P085545-4 R3269031-3 4P098092-1
3 3 M8
FI-222 1/4B D6.4CuT
1
3P004150-2 3P154018-1 3P100371-1 4SA27006-1 3SA58020-2 R3269032-2 3P088483-1 4P075241-1 3P088483-2 2P098070-1 2P098074-1 3P098075-1 3P102569-1 3P102569-2
3 1 1 1 1 1 1 1
1 ACB-JB167 OFF/ON:1.8/ 1.4MPa (CE mark) BPR-803D-Q20 VCS2S D6.4xL49 FI-355
1 1 2 2 1 1 1 1 1 1 2 2 1
3P102569-3
1
3P102569-4
1
R3269032-2
S1PH
FI-355 (FIELD INSTALLATION PARTS)
1
Convenience Pack
Si81-503
8.3
Parts List
BRR2A1R
Convenience Pack
237
Parts List
Si81-503
BRR2A1R
238
Convenience Pack
Si81-503
Parts List
BRR2A1R No.
Parts No.
Parts Name
Drawing No.
E1 E2 E2-1 E2-1-1 E2-2
1182392 1201604 1682892
E2-2-1 E2-3
0285919 1682900
E2-3-1 E2-6 E2-7
0119120 1201642 1201611
E2-8 E2-10
0764304 1204975
E9
1107377
INVERTER BOX ASS'Y SWITCH BOX ASS'Y SWITCH BOX SPACER PRINTED CIRCUIT ASS'Y (INVERTER) FUSE PRINTED CIRCUIT ASS'Y (CONTROL) FUSE HEAT SINK HOLDER (FOR ADDITION PC BOARD) FIN THERMISTOR DOUBLE WASHER MACHINE SCREW REACTOR
E10
0951588
MAGNETIC RELAY
E11 E12 E14
0616119 607000 661065
MINI POWER RELAY FUSE HOLDER (WITH FUSE) TERMINAL BLOCK
3PA51383-1 MI42005-1 R3421167-3
E15 E16 E20 E21 E23 F1 F2 H1 H2
1310173 0794451 1329122 1329285 1329470
COOLING FAN MOTOR FAN GUARD FOR COOLING FAN WIRE HARNESS WIRE HARNESS WIRE HARNESS FRONT PANEL DRIP PROOF PLATE TRANSFORMER NOISE FILTER
3P091097-1 4P152041-1 3P086920-4 3P086920-18 3P091216-1
H3 H4
1615513 0706687
H5
1076187
H6
0788045
H7
1615520
H8 H9
1615537 1302824
1329456 1615568 0468839
Convenience Pack
Specification
3P059344-1 3P056675-1 2P147492-1-KU 4SA42006-2 2P147492-1-KE
3A 250V D5.2xL20
4SA42006-3 3P063374-1 3P060762-1
5A 250V D5.2xL20
3PA61998-1 4SB00034-2
Q'ty/Unit BRR Remarks 2 A1R 1 1 1 1 A2P 1 1 1 1 1
F200U A1P F1U
1 1
R1T
M4x20
2
3EB75079-1
20A/4.5MH
1
L1R
HY312204-2
LY2F-ACA 200V (2a)
2
MY2ZF 200V 1A 250V PMA15S-4P 4P 600V (F1,F2)
1 1
K1R, K3R K2R F1U X4M
3P090950-1 3P152650-1 3EA76001-1
1 1 1 1 1 1 1 1 1
M1F
PRINTED CIRCUIT (ADAPTOR) TERMINAL BLOCK, POWER SOURCE TERMINAL BLOCK, POWER SOURCE TERMINAL BLOCK (COVER)
ACS040471-1 R3421240-1-KU DT25-4P 4P 600V 25A
1 1
T1R Z1C, Z2C A4P X1M
3SA44010-3-KA KST20-3P-1
1
X3M
3SA44010-6-KI
1
X2M
EARTH LEAKAGE CIRCUIT BREAKER FAN GUARD FERRITE CORE
ACS040536-1
1
K1M
4P152041-1 3P082293-1
1 1
Z3C
CAT3035-1330
KST20-6P
2
239
Parts List
8.4
No.
Si81-503
BRR3A1V1R
Part No.
E1 E2 E3 E4
1604614 0281258 661516
E5
661405
E6 E7 H1 H2
661075 1064108 1615621 1615638
240
Parts Name PRINTED CIRCUIT ASS’Y (CURRENT SENSOR) FUSE FUSE HOLDER TERMINAL BLOCK TERMINAL BLOCK, CONTROL CIRCUIT TERMINAL BLOCK POWER RELAY FERRITE CORE FERRITE CORE
Drawing No.
Specification
Qty/Unit BRR3A1V1R
Remarks
2P161105-2
250V T6.3A
1
A1P
3P112435-2 MI42005-2 R4421084-5
250V B5A
2 2 1
F2U, F3U X11M
R4421084-4
8P 380V 20A
1
X12M
AC200V (2c) Fitted in control box Fitted in control box
1 4 1 1
X13M K4R ~ K7R Z1C Z2C
R3421167-1 MI37052-5 ACS040524-1 ACS040524-2
Convenience Pack
Si81-503
8.5
No. E1 E1-1 E2
Parts List
BRP5A1V1
Part No. 1653825 1604614 1653832
Convenience Pack
Parts Name PRINTED CIRCUIT ASS’Y FUSE RESISTOR HARNESS
Drawing.No. 2P161105-1 3P112435-2A 3P110897-1
Specification
250V T6.3A
Qty/Unit BRP5A1V1 1 1 2
Remarks
241
Ask a qualified installer or contractor to install this product. Do not try to install the product yourself. Improper installation can result in water or refrigerant leakage, electrical shock, fire or explosion.
Si81 - 503
Use only those parts and accessories supplied or specified by Daikin. Ask a qualified installer or contractor to install those parts and accessories. Use of unauthorized parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage, electrical shock, fire or explosion. Read the User's Manual carefully before using this product. The User's Manual provides important safety instructions and warnings. Be sure to follow these instructions and warnings.
Service Manual / Convenience Pack
For any inquiries, contact your local distributor.
Convenience Pack Cautions on product corrosion 1. Air conditioners should not be installed in areas where corrosive gases, such as acid gas or alkaline gas, are produced. 2. If the outdoor unit is to be installed close to the sea shore, direct exposure to the sea breeze should be avoided and choose an outdoor unit with anti-corrosion treatment.
[Applied Models]
lLRYCP14DY1
Dealer Head Office: Umeda Center Bldg., 2-4-12, Nakazaki-Nishi, Kita-ku, Osaka, 530-8323 Japan Tokyo Office: JR Shinagawa East Bldg., 2-18-1, Konan, Minato-ku, Tokyo, 108-0075 Japan
http://www.daikin.com/global/
The specifications, designs, and information in this brochure are subject to change without notice.
Printed in Singapore 03/2006 COS
Si81-503
c All rights reserved
