Transcript
Alarm Descriptions This document describes all possible alarm types as listed in the alarm log. ‘x’ indicates compressor circuit for compressor related alarms. Alarms are listed in alphabetical order.
Battery Onboard battery fault. The control software can detect a battery fault by storing a set of parameters in both a battery backed memory block and in a memory block that is saved without the need of a battery. These parameters are check when the unit is started. If there is a mismatch there has been a memory corruption in the battery backed up memory. The memory corruption will occur if the battery no longer can retain the parameters when the unit is powered off and thereby we have a battery fault. It can also occur if the core module containing the program is removed and installed again. In this case the core module (with the memory) no longer is attached to a battery which is the same thing as having a faulty battery. You will always get this alarm if a new core module with new software has been shipped out to replace faulty software in a unit. To clear the alarm, just restart the unit and the alarm should no longer happen unless the battery itself is faulty.
Blower OL Blower overload. Alarm will clear once overload clears.
BlowLock Blower has been locked out and a system restart is required to run blower again. Blower will be locked out if the Blower OL or Volt Mon alarms occurs 3 times within an hour.
BMSVer BMS version fault. This alarm only occurs if there is a version fault when trying to establish a communication link between a master and slave board in a 3 or 4 compressor configuration. This alarm has been replaced by BMSVerSys and BMSVerSP.
BMSVerSys BMS version fault. Version mismatch between the software version loaded on the master board versus version loaded on slave board.
BMSVerSP BMS version fault. Protocol version mismatch between the Seresco Protocol version used on the master board versus the version use on the slave board.
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Comprx Compressor fault. This alarm is tripped if low pressure is higher than 90 psi OR high pressure is less than 170 psi 30 seconds after compressor has started. It can indicate a compressor motor running in reverse or some other serious compressor fault. NOTE! Alarm was introduced in version 4.1.6 and was implemented as an AND condition (e.g. LP had to be above 85 psi AND HP below 180 psi). In version 4.6.0 this was changed to an OR condition.
CompLockx Compressor has been locked out and a system restart is required to enable compressor again. Compressor will be locked out if the same compressor alarm occurs for the same compressor 3 times within an hour.
CompPower Unit has been wired with a remote compressor power switch. This switch can be used to enable and disable compressors. If compressors are disabled for more than 5 minutes using the remote switch, this alarm is tripped. Alarm is automatically cleared once compressors are enabled again. NOTE! Alarm no longer used starting from version 4.6.0.
DisTempLx Compressor discharge temperature is too low. Discharge temperature has been below 150 F for more than 5 minutes.
DisTempHx Compressor discharge temperature is too high. Discharge temperature is above 230 F. This alarm trips as soon as the discharge temperature moves above 230 F.
Electx This alarm indicates a general compressor electrical fault. When a high pressure signal is received, the high pressure transducer is also checked. If the high pressure transducer is not indicating a pressure above 290 psi for R22 or 310 psi for R-407C, than the high pressure switch signal is for another reason than a high pressure. On older units this can be a faulty auxiliary switch.
Exhaust Exhaust fan overload alarm. This alarm can be tripped by either exhaust fan 1 or exhaust fan 2 (purge fan).
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Filter Dirty Filter alarm. If dirty filter switch has indicated a reduced airflow for more than 2 hours, this alarm is tripped.
Fire Fire alarm for units wired up to a fire alarm. The unit is by default configured to require a manual restart to clear the alarm. Unit can be configured to automatically clear the alarm once the fore alarm clears.
Freeze Freezestat condition. Supply air temperature has been below freezestat setpoint for more than 5 minutes. Alarm can also be tripped if unit has been equipped with a Freezestat sensor and Freezestat option is enabled.
HPx-SW High Pressure Switch fault. Switch trips at 350 psi.
HPx-TD High Pressure transducer fault. Transducer is set to trip at 340 psi for R22 refrigerant and 360 psi for R-407C refrigerant.
LPx-Sens When a compressor is about to start, the first thing that happens is that the pump down valve is opened which will cause the low pressure to rise. When the low pressure is above 70 psi, the compressor will start. If after 2 minutes the low pressure has not risen above 70 psi and the low pressure switch has not closed, then something might be wrong with both sensors (or circuit is simply low on refrigerant). When this happens, this alarm will be tripped. This alarm is what is used in the latest control software. Earlier version called this alarm Sensorx.
LPx-SW Low Pressure switch. Switch trips at 25 psi.
LPx-TD Low Pressure transducer. Transducer trips at 40 psi (before version 4.6.0 it tripped at 20 psi).
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LPx-Vac Low pressure is reaching vacuum level. Alarm trips at a low pressure of 20 psi (befofe version 4.6.0 it tripped at 10 psi). At startup of the compressor, the low pressure alarm is disabled to avoid tripping on low pressure in case of a big dip in pressure at startup. This alarm is to prevent the pressure from dipping too low.
No Air No air flow alarm. If airflow switch has indicated reduced air flow for more than 2 minutes, this alarm is tripped.
No Config This alarm can only occur after new software have been loaded onto the core module. When powering up the unit, the user does not make any configuration selection, the unit will startup with default settings (1 compressor, A/C enabled, no pool heating, 2-stage heater and no purge) after 5 minutes and trip this alarm. Alarm is cleared as soon as any of the listed options are configured. NOTE! This alarm is no longer used in version 4.2.0 and later.
Oilx On units with an oil failure switch, this indicates a compressor oil failure.
PumpFault Water flow fault for internal pump on water cooled units.
Purge Too cold to use purge. Return air sensor has dropped below purge setpoint when purge is running. Purge will be stopped.
Restart A system restart is required to either be able to run the blower again or to enable a locked out compressor. This alarm is being faced out and instead the new CompLockx and BlowLock alarms will be used. Currently both type of alarms shows up in the alarm log. Restart alarm is cleared once the unit is restarted.
Sensorx See description for LPx-Sens.
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SucTempLx Compressor suction temperature is too low. The low suction trip level is calculated using two different methods depending on the version of the control software. Version 4.13.0 and later The low temperature level is calculated as SaturationTemp + Superheat. SaturationTemp is determined through a lookup table by using the suction pressure as the lookup input parameter. There is one table for each one of the refrigerant types (R22, R_407C, R_410A). The table below shows the saturation temperature in Fahrenheit for the different refrigerant types. Suction Pressure (psi) 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150
R22 (F) 17 22 26 30 34 38 41 44 48 51 54 -
R_407C (F) 12 16 20 24 28 32 35 38 41 44 47 -
R_410A (F) 16 19 22 24 27 30 32 35 37 39 41 44 46 48 50 52 54
Superheat is set to 18 by default but can be changed under Factory Settings. A low pressure of 65 psi gives a low suction temperature level of 56 F (38 + 18). Suction temperature has to be below this level for more than 5 minutes for this alarm to trip. AlarmDescriptions_4.15.9
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Before version 4.13.0 The low temperature level is calculated as (Low Pressure * Constant) + Superheat. This is calculation is used for both R22 and R_407C. R_410A is not supported. Control software has to be at least version 4.13.0 on units with R_410A or unit will trip on this alarm. Superheat is set to 18 by default but can be changed under Factory Settings. The Constant is determined as follows: Low Pressure below 40 psi, Constant = 0.40 Low Pressure below 50 psi, Constant = 0.425 Low Pressure below 60 psi, Constant = 0.52 Low Pressure below 70 psi, Constant = 0.57 Low Pressure below 80 psi, Constant = 0.59 Low Pressure above 80 psi, Constant = 0.60 A low pressure of 65 psi gives a low suction temperature level of 55 F. Suction temperature has to be below this level for more than 5 minutes for this alarm to trip.
SucTempHx Compressor suction temperature is too high. Suction temperature has been above 80 F for more than 5 minutes.
SW Error Internal software fault.
SWErrXM Internal software fault related to extended memory handling.
SWErrEvt Internal software fault related to event handling.
SWErrTm Internal software fault related to timers.
SWErrSys Internal software fault related to system support functions.
SWErrSP Internal software fault related to propriety Seresco Protocol.
SWErrVT Internal software fault related to ValueType object.
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Volt Mon Voltage Monitor fault. Voltage monitor has detected a voltage fault. The alarm is cleared once the voltage monitor fault status is cleared.
Waterflow Pool water flow fault. If pool out sensor is not within 4 F and 15 F above pool in sensor within 30 seconds after pool heating using compressor is started (opening pool heat valve), the alarm is tripped. Alarm will be active for 30 minutes before being cleared and unit being able to try to heat pool again using compressor.
Waterflw2 Same as the Waterflow alarm bit for 2 compressor units heating a second pool. This alarm indicates a water flow fault for the second pool.
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