Mitsubishi PUMY-P60NKMU Technical & Service Manual page 50

Check code
Compressor current interruption (Locked compressor)
4100
●Diagnosis of defectives
Make sure to turn the power OFF before connecting/disconnecting any connectors, or replacing boards.
Continued from the previous page
Are they set properly?
Check whether the compressor is faulty
grounded or not.
Is the compressor faulty grounded?
OCH502C
Diagnosis
Yes
Yes
Set the model selection switch correctly,
No
then restart.
Replace the compressor (Defective compressor).
No
Replace the outdoor power board
(Defective outdoor power board).
50
Chart 2 of 2
Remedy