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49

The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor (feedback of
rotation > 2550rpm or < 50rpm)

• Operation stops due to short circuit inside the fan motor winding.
• Operation stops due to breaking of wire inside the fan motor.
• Operation stops due to breaking of fan motor lead wires.
• Operation stops due to Hall IC malfunction.
• Operation error due to faulty indoor unit PCB.

50

During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature
sensor are used to determine sensor errors.

• Faulty connector connection.
• Faulty sensor.
• Faulty PCB.

51

During startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature sensor are used
to determine sensor errors.

• Faulty connector connection.
• Faulty sensor.
• Faulty  PCB.

52

During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature sensor are
used to determine sensor errors.

• Faulty connector connection.
• Faulty sensor.
• Faulty PCB.