Ground - Mitsubishi Electric City Multi PUMY-SP112VKM Technical & Service Manual

Check code
Compressor current interruption (Locked compressor)
4100
(UF)
●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 connected properly?
Check whether the compressor is faulty
Is the compressor faulty grounded?
OCH668B
Diagnosis
Yes
grounded or not.
Yes
Connect the compressor wiring (U, V and
No W phase) properly, then turn the power
back ON.
Replace the outdoor power circuit board
No
(Defective outdoor power circuit board).
65
Chart 2 of 2
Remedy
Replace the compressor
(Defective compressor).