Page 17
Operation and Maintenance
ThermoCooler HP
DSTCH.191101.01.EN
Continuous product development may give rise to specification changes without notice.
6.2 Alarm information for inverter and compressor
Alarm Climatix
Explanation and corrective action
Cooling unit
Sum alarm
Sum alarm, check alarm in Carel, see table below.
Alarm C1 R. pressure switch
High pressure switch tripped or alarm for frequency inverter.
Alarm C1 EEV motor fault
Fault on electrical connection to expansion valve.
Alarm C1 low pressure sensor
Power cut or short circuit to low pressure sensor. Check EVD, cabling and
sensor.
Alarm C1 suction gas sensor
Power cut or short circuit to suction gas sensor. Check EVD, cabling and
sensor.
Alarm C1 high pressure sensor
Power cut or short circuit to high pressure sensor. Check EVD, cabling and
sensor.
Alarm C1 low overheating
Compressor stoppage caused by low overheating.
Alarm C1 LOP
Compressor stoppage caused by low evaporation temperature.
Alarm C1 MOP
Compressor stoppage caused by high evaporation temperature.
Alarm C1 communication EVD
Fault on communication to EVD (expansion valve control).
Alarm C1 low suction gas temp
Low suction gas temperature.
Alarm Carel
Explanation and corrective action
76 Drive MainsPhaseLoss
Check that all three phases are connected to the frequency inverter.
81 Drive U_phaseLoss
82 Drive V_phaseLoss
83 Drive W_phaseLoss
94 Drive offline
No communication with the frequency inverter. Check that the frequency
inverter is energised with 3-phase 400V.
118 Compr 1, Low evaporation pressure Circuit 1, low evaporation temp/pressure. Check leakage in cooling circuit.
121 Compr 1, High pressure switch
Circuit 1, high pressure switch tripped. Check air flow and fire damper.
172 Compr 2, Motor protector
Circuit 2, motor protection alarm
174 Compr 2, High pressure switch
Circuit 2, high pressure switch tripped. Check air flow and fire damper.
176 Compr 2, LowEvapPressure
Circuit 2, low evaporation temp/pressure. Check leakage in cooling circuit.
180 Compr 1, High pressure switch
Circuit 1, high pressure switch tripped. Check air flow and fire damper.
189 Phase rotation order
Incorrect phase sequence gives incorrect rotation direction. Switch two of
the incoming phases.