Primary Current Error - Mitsubishi PUMY-P60NKMU Technical & Service Manual

Check code
5300
Abnormal points and detection methods
Abnormal if the detected current sensor input value (primary current)
during compressor operation is outside the specifi ed range.
●Diagnosis of defectives
Make sure to turn the power OFF before connecting/disconnecting
any connectors, or replacing boards.
Check the input current at the time of
abnormal stop.
Does it satisfy the condition 1
below?
Check the compressor wiring for
disconnection or looseness.
Is there any abnormality such as
a disconnection or looseness?
OCH502C

Primary current error

Diagnosis
Yes
No
Condition 1:
Yes
No
Causes and check points
Decrease/ trouble of power supply voltage
Disconnection of compressor wiring
Input sensor trouble on outdoor power board
The power supply voltage is decreased or
abnormal.
Check the power supply facility.
Model Error detecting condition
P36 model
34A or more for 10 consecutive
seconds, or 38A or more
P48 model
37A or more for 10 consecutive
P60 model
seconds, or 40A or more
Connect the compressor wiring properly.
Replace the outdoor power board
(Malfunction of current sensor circuit).
66
Remedy