46
Check of outdoor unit
D
Compressor and / or outdoor fan motor doesn’t operate.
Yes
Is there 5V DC between
J205 - J101 on the deicer
P.C. board?
w
1
Compressor
doesn't operate.
Yes
Yes
Is there 220-240V AC
between 3 on the compressor
contactor(52C) and
N
on the
outdoor terminal block.
Operate the unit in COOL or HEAT mode by pressing the
EMERGENCY OPERATION switch.
3-minute time delay works.
Test run operation operates for 30 minutes.
Outdoor fan motor
doesn't operate.
No
Rectify the indoor/outdoor
connecting wire.
Rectify the connecting wire.
Check the compressor and compressor
capacitor, and rectify the connecting wire.
Start
Yes
Is there 220-240V AC between 4
on the compressor contactor (52C) and
TAB20 on the deicer P.C. board?
w
1
Is there 220-240V AC between
2
–
N
on the outdoor terminal block.
Replace the
deicer P.C. board.
Replace the
deicer P.C. board.
No
No
Yes
Yes
No
Check the outdoor fan motor
and rectify the connecting
wire.
Is there 220-240V AC between
4 on the compressor contactor (52C)
on the deicer P.C. board?
w
1
Replace the
deicer P.C. board.
Is there 5V DC between
J205 - J101 on the deicer
P.C. board?
w
1
w
1 Refer to page 50.
No
Yes
Rectify the indoor/outdoor
connecting wire.
Rectify the connecting wire.
Is there 220-240V AC between
2
–
N
on the outdoor terminal block.
No
No
+
–
+
–
Check of outdoor unit
After 30 seconds,
does compressor stop?
No
Yes
Is there 220-240V AC between 3 on
the compressor contactor(52C) and
N
on
the outdoor terminal block?
Replace the
deicer P.C. board.
Yes
1
Turn OFF the power supply.
2
After 30 seconds, turn ON the power supply again.
3
Operate the unit in COOL or HEAT mode by
pressing the EMERGENCY OPERATION switch for 1 minute or more.
4
Stop it by pressing the EMERGENCY OPERATION switch twice or once.
Ok
No
After 30 seconds, does
outdoor fan motor stop?
Replace the
deicer P.C. board.
Yes
Ok
No
Rectify the connecting wire.
Compressor and/or outdoor fan motor doesn’t stop.
E
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