35
1
Turn OFF the power supply.
2
After 30 seconds, turn ON the power supply again.
3
Operate the unit in COOL mode by pressing the
EMERGENCY OPERATION switch.
4
Operate the unit for 1 minute or more and stop it by
pressing the EMERGENCY OPERATION switch again.
After 30 seconds, does
compressor stop ?
Yes
No
Is there 230V AC between
3
-
N
on the outdoor terminal
block?
Replace the indoor
electronic control P.C.
board.
No
Make the connection
of wiring correct.
Is there 230V AC between
3
-
N
on the indoor terminal
block?
Yes
Reconnect the continuity
of indoor and outdoor
unit connection.
Is there 230V AC between
1
on the compressor
contactor(52C) and
N
on the
outdoor terminal block?
No
Yes
Reconnect the continuity
of indoor and outdoor
unit connection.
Yes
Replace the compressor
contactor(52C).
OK
No
After 30 seconds, does
outdoor fan motor stop ?
Yes
No
Is there 230V AC between
3
-
N
on the indoor terminal
block?
No
OK
Replace the indoor
electronic control P.C.
board.
Yes
<MS-C24TV only>
Check of outdoor unit
E
Compressor and / or outdoor fan motor doesn’t stop.
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