Pioneer MUH-GA35VB, MUH-GA25VB, MUH-GA20VB service manual E Check of outdoor thermistor

When OPERATION INDICATOR lamp flashes 6-time. Thermistors in the outdoor unit are abnormal.

E Check of outdoor thermistor

Start

Turn OFF the power supply.

Defrost thermistor (RT61)

Measure resistance between CN 661

1and 2.

Is the resistance of Yes thermistor normal?

No

Replace the thermistor.

Reconnect CN661. Turn ON the power supply and press the EMERGENCY OPERATION switch.

Replace the deicer P.C. board.

No

Does the unit operate 10 minutes or more?

Yes

OK ❈

❈Defective contact of the connector is considered.

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