Service manual

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Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Replace the inverter
PC board.
NO
YES
NO
NO
YES
NO
Measure resistance value of
the radiation fin thermistor.
Is
the thermistor
resistance value
normal?
Replace the fan
motor.
Replace the inverter
PC board.
Continue operation.
Replace the
compressor (M1C).
YES
The fan
motor's insulation
resistance is not more
than 1MΩ.
Does the
malfunction recur when
the power supply turns
ON?
YES
The INV
compressor's insulation
resistance is not more
than 100kΩ.
* Disconnect the connector (X111A) from the fin
thermistor, and then check the thermistor.
*