Panasonic CS-S18NKUA Service Manual page 44

14.4.4 H19 (Indoor Fan Motor – DC Motor Mechanism Locked)
Malfunction Decision Conditions
•
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)
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 Hall IC malfunction.
•
Operation error due to faulty indoor unit PCB.
Troubleshooting
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