Service manual

22
Check of outdoor unit
Does compressor or
outdoor fan motor stop?
No
Yes
Is there 220-240V AC between COM on
the compressor contactor (52C) and N on
the outdoor terminal block (TB1)?
Replace the compressor
contactor(52C).
Yes
Ok
No
Replace the indoor
electoronic control
P.C. board.
Rectify the connecting wire.
Start
Turn OFF the power supply.
After 1 minute, turn ON
power supply again.
Is there 12V DC between
1–2 on the outdoor
terminal block (TB2)?
No
Yes
Compressor and / or outdoor fan motor doesn’t stop.
V
Check of outdoor unit
Does compressor stop?
No
Yes
Is there 220-240V AC between 3 on
the compressor contactor (52C) and N on
the outdoor terminal block (TB1)?
Replace the
deicer P.C. board.
Yes
Ok
No
Does outdoor fan motor stop?
Replace the
deicer P.C. board.
Yes
Ok
No
Rectify the connecting wire.
Start
Turn OFF the power supply.
After 1 minute, turn ON
power supply again.
Compressor and / or outdoor fan motor doesn’t stop.
V
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