149
No
Yes
No
Yes
No
Yes
No
Yes
1. Disconnect the lead wire leading to the compressor.
2. 3 minutes after turning ON the power supply, start EMERGENCY
OPERATION in HEAT mode.
Is there voltage of 230 VAC between pin1
and pin2 at connector CN712?
Turn OFF the power supply.
Disconnect the connector CN712.
Replace the 4-way valve.
Replace the outdoor control P.C. board.
Replace the R.V. coil.
Is there voltage 230 VAC
between the pin1 and pin3 at
connector CN711?
Replace the noise filter P.C. board.
Is there normal resistance
to R.V. coil? (Refer to 11-5.)
1. Disconnect the lead wire leading to the compressor.
2. 3 minutes after turning ON the power supply, start EMERGENCY
OPERATION in COOL mode.
Is there voltage of 230 VAC between pin1 and
pin2 at connector CN712?
Replace the 4-way valve.
Replace the outdoor control P.C. board.
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Outdoor control P.C. board
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