Panasonic S-22KA1E5S Service Manual page 203

18.2.2 Indoor Fan Motor (DC Motor) Mechanism Locked (F17-02)
Malfunction Decision Conditions
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The rotation speed detected by the Hall IC of the fan motor during fan motor operation is used to determine
abnormal fan motor (feedback of rotation > 2550rpm or < 50rpm).
Malfunction Caused
•
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 fan motor Hall IC malfunction.
•
Operation error due to faulty indoor unit PCB (main).
Abnormality Judgment
•
Fan motor runs for 5 seconds and stops for 25 seconds, and repeat continuously for 7 times.
Troubleshooting
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