Compressor And/Or Outdoor Fan Motor Doesn’t Stop - Mitsubishi Electric MSC-A07WV Service Manual

Compressor and/or outdoor fan motor doesn't stop.
E E Check of outdoor unit
Start
Turn OFF the power supply.
After 1 minute, turn ON
power supply again.
Does compressor or
outdoor fan motor stop?
Yes
OK
Compressor and/or outdoor fan motor doesn't stop.
E E Check of outdoor unit
Start
Turn OFF the power supply.
After 1 minute, turn ON
power supply again.
Does compressor stop?
Yes
OK
Does outdoor fan motor stop?
Yes
OK
<MU-A07/A09/A12WV>
No Is there 12V DC between
1–2 on the outdoor
terminal block (TB2)?
Yes
Replace the indoor
electoronic control
P.C. board.
<MUH-A07/A09/A12WV>
No Is there 230V AC between 3 on the
compressor contactor (52C) and N on the
outdoor terminal block (TB1)?
Yes
Replace the
deicer P.C. board.
No
Replace the
deicer P.C. board.
Is there 230V AC between COM on the
No
compressor contactor (52C) and N on the
outdoor terminal block (TB1)?
No
Rectify the connecting wire.
No
Rectify the connecting wire.
115
Yes
Replace the compressor
contactor(52C).