Code
Description
Possible cause
Action taken
Reset type
Compressor failure XX = 11 (compressor A1); XX = 12 (compressor A2); XX = 21 (compressor B1); XX = 22 (compressor B2)
xx20
Compressor High Inverter Temperature
Compressor fault
Compressor shuts down
Automatic
xx22
Compressor Low Suction Pressure
As above
Compressor shuts down
Automatic
xx23
Compressor High Discharge Pressure
As above
Compressor shuts down
Automatic
xx24
Compressor 3-Phase Overcurrent
As above
Compressor shuts down
Automatic
xx25
Compressor Cavity Temperature
As above
Compressor shuts down
Automatic
xx27
Compressor Pressure Ratio
As above
Compressor shuts down
Automatic
xx28
Compressor Bearing/Motor Controller Fault
As above
Compressor shuts down
Automatic
xx29
Compressor Sensor Fault
As above
Compressor shuts down
Automatic
xx30
Compressor SCR Temperature
As above
Compressor shuts down
Automatic
xx31
Compressor Lock Out
As above
Compressor shuts down
Automatic
xx32
Compressor Motor Winding Temperature
As above
Compressor shuts down
Automatic
xx33
Compressor High Suction Superheat
As above
Compressor shuts down
Automatic
xx34
Compressor Earth Leakage
As above
Compressor shuts down
Automatic
xx35
Compressor Soft Start Temp.
As above
Compressor shuts down
Automatic
xx36
Compressor Identification register does not
match
As above
Compressor shuts down
Manual
xx37
Compressor Starting is taking too much time As above
Compressor shuts down
Automatic, if the compressor
is stopped
xx38
Compressor - Interlock discordance
As above
Compressor shuts down
Manual
xx39
Compressor - Out of map info
As above
No action (warning only)
Automatic
xx90
Compressor Communication lost
As above
Compressor shuts down
Automatic, if communication
is re-established
LEN & Database modules failure
56001
Lenscan module Failure
Software problem. Contact
Manufacturer Agency
Unit shuts down
Automatic
55001
Database module Failure
As above
No action (warning only)
Manual
Voltage failure
57001
SIOB 1 Low Voltage Failure
Unstable electrical supply or
electrical issue
Unit shuts down
Automatic, if voltage reading
returns to normal (6 alarms
within 24 hours); otherwise,
Manual
57002
SIOB 2 Low Voltage Failure
As above
Circuit B shuts down
As above
57003
SIOB 3 Low Voltage Failure
As above
Unit shuts down
As above
Stepper motor failure
57020
Main EXV Stepper Motor Failure - Cir A
Stepper motor failure
Circuit A shuts down
Manual
57021
Main EXV Stepper Motor Failure - Cir B
As above
Circuit B shuts down
Manual
57030
Staging Valve stepper motor failure -
Compressor A1
As above
Compressor A1 cannot be
started
Manual
57031
Staging Valve stepper motor failure -
Compressor A2
As above
Compressor A2 cannot be
started
Manual
57040
Staging Valve stepper motor failure -
Compressor B1
As above
Compressor B1 cannot be
started
Manual
57041
Staging Valve stepper motor failure -
Compressor B2
As above
Compressor B2 cannot be
started
Manual
9 - DIAGNOSTICS
33
