Panasonic OCU-CR200VF5 Operating Instructions And Installation Instructions page 44

Failure Diagnosis
Error Code
Error code Meaning
High pressure
E31 abnormal
(1st to 6th time)
Refrigerant fl ood back
alarm
E32
Unit outlet temp sensor
abnormal
E57
Gas cooler outlet temp
sensor abnormal
E59
Inverter abnormal (1st
E60
to 9th time)
Inverter Over Current
E62
(1st to 9th time)
Inverter
E64 Over Load
(1st to 9th time)
Inverter
E66 Step Out
(1st to 9th time)
PFC abnormal
E68
(1st to 9th time)
Inverter abnormal
(10th time)
E70
Inverter
Over Current
(10th time)
E72
Inverter
Over Load
(10th time)
E74
Inverter
Step Out
(10th time)
E76
PFC abnormal
(10th time)
E78
Split cycle outlet temp
sensor abnormal
E80
Intermediate pressure
sensor abnormal
E81
E82 Refrigerant insuffi cient
Cause
High pressure increased to abnormal level.
Suction gas superheat (difference between the
"suction gas temperature" and "evaporating
temperature converted from low pressure")
became 1 K or below continuously for 2
minutes.
Unit outlet temp sensor became abnormal
(open condition).
Gas cooler outlet temp sensor became
abnormal (open)
Input Current Sensor Fault
EEPROM Data Fault
Over Current (Inverter Output Current)
Over Current (Inverter Input Current)
Step Out
PFC circuit Fault
Input Current Sensor Fault
EEPROM Data Fault
Over Current (Inverter Output Current)
Over Current (Inverter Input Current)
Inverter Step Out
PFC circuit Fault
Split cycle outlet temp sensor became
abnormal (open)
Intermediate pressure sensor became
abnormal (open).
(1) Check the cause of high pressure abnormality.
(2) Check if abnormality exists in the high pressure
sensor.
Check the cause of refrigerant fl ood back operation.
(1) Check the connection of "2P4 U outlet connector" of
the control PCB.
(2) Check the resistance value of the unit outlet
temperature sensor.
(1) Check the connection of "2P3 GC outlet connector" of
the control PCB.
(2) Check the resistance value of the gas cooler outlet
temperature sensor.
See "E70"
See "E72"
See "E74"
See "E76"
See "E78"
(1) Check the connection to the inverter PCB.
(2) Check whether abnormality occurred in the power
supply.
(3) Replace the inverter PCB
(1) Check the cause of overload operation.
(2) Check the connection line between the inverter PCB
and the compressor.
(3) Check whether abnormality occurred in the power
supply.
(4) Replace the inverter PCB.
(1) Check the cause of overload operation.
(2) Check the connection line between the inverter PCB
and the compressor.
(3) Check the connection the Power supply.
(4) Check whether abnormality occurred in the power
supply.
(5) Replace the inverter PCB.
(1) Check short cycle operation (frequent start/stop
operation).
(2) Check the connection line between the inverter PCB
and the compressor.
(3) Check the connection the Power supply.
(4) Check whether abnormality occurred in the power
supply.
(5) Replace the inverter PCB.
(1) Check the connection the Power supply.
(2) Check whether abnormality occurred in the power
supply.
(3) Replace the inverter PCB.
(1) Check the connection of "2P2 S outlet connector" of
the control PCB.
(2) Check the resistance value of the split outlet
temperature sensor.
(1) Check the connection of "3P2 intermediate pressure
connector" of the control PCB.
(2) Check the resistance value of the intermediate
pressure sensor.
EN - 44
Method of Action (Listed)