Chapter 5 iCOM Controller 71
Liebert.PEX2 Series Air Conditioner User Manual
Event Definition
SENSOR A FAILURE Sensor A failure
LP Transducer 2 Fail Low pressure transducer 2 fails
NETWORK FAILURE Network failure
Low Start Pressure 1 Alarm of low start pressure 1
UNIT ON Unit on
UNIT OFF Unit off
SLEEP MODE Sleep mode
STANDBY MODE Standby mode
POWER ON Power on
POWER OFF Power off
Unit n disconnected (n = 1 ~ 32) Unit n disconnected (n = 1 ~ 32)
COMP 2 HIGH PRESSURE Compressor 2 high pressure
COMP 2 LOW PRESSURE Compressor 2 low pressure
COMP 2 HRS EXCEEDED Compressor 2 has exceeded operating time limit
DSCROLL 1 SENSOR FAIL digital scroll 1 sensor fails
FREECOOL TEMP SENSOR Free cooling source sensor failure
Low Start Pressure 2 Alarm of low Start Pressure 2
ON-OFF KEY DISABLED ON-OFFkey disabled
LWD SENSOR FAIL Low water level sensor fails
WATER LEAKAGE Water leakage alarm
Dummy 67 Dummy alarm 067
RAM / Battery Failure RAM/battery failure
Low Memory 1 Low memory 1
NO CONNECTION w/Unit1 No connection with unit 1
COMP 1 OVERLOAD Compressor 1 overload
COMP 2 OVERLOAD Compressor 2 overload
WRONG DAMPER POSITION Wrong damper position
Dummy 074 Dummy alarm 074
HP 1 SENSOR FAIL High pressuresensor 1 fails
HP 2 SENSOR FAIL High pressure sensor 2 fails
COMP POWER REDUCTION ACTIVE Compressor power reduction active
NO POWER No power
UNIT DISABLED Humidification/heating disabled due to unit failure
UNIT SHUT DOWN Unit shutdown due to failure
Low Coil Pressure 1 Low coil pressure 1
Low Coil Pressure 2 Low coil pressure 2
Low OP Pressure 1 Low op pressure 1
Low OP Pressure 2 Low op pressure 2
UNIT SYNCHRONISATION Unit recovers online
HUMIDIFIER PROBLEM Humidifier failure
REMOTE SHUTDOWN Remote shutdown
DEHUM HRS EXCEEDED Dehumidifier has exceeded operating time limit
FC HRS EXCEEDED Free cooling source has exceeded operating time limit
C1 FREEZE PROTECTION Compressor 1 freeze protection
COMP 1 PUMPDOWN FAIL Compressor 1 pumpdown fails
MEMORY 1 FAIL Memory 1 fail
MEMORY 2 FAIL Memory 2 fail
HCB not connected Humidifier contorl board not connected
BMS Disconnected Battery management system disconnected
COMP 2 PUMPDOWN FAIL Compressor 2 pumpdown fails
DIG SCROLL1 HIGH TEMP Digital scroll 1 high temperature
DIG SCROLL2 HIGH TEMP Digital scroll 2 high temperature
Dummy 099 Dummy alarm 099
RESERVED 100 Reserved 100
RESERVED 101 Reserved 101
RESERVED 102 Reserved 102
Dummy 103 Dummy alarm 103
SMOKE DETECTED Smoke detected
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