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53

• 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.

54

• 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.

55

• During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature 

sensor 2 are used to determine sensor errors.

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

56

• 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.