Troubleshooting for SkyAir Indoor Unit SiEN18-622
338 Troubleshooting
5.5 Malfunction of Indoor Unit Fan Motor
Remote Control
Display
A6
Applicable
Models
FFQ, FCQ, FBQ
Method of
Malfunction
Detection
Detection of abnormal fan speed by signal from the fan motor
Malfunction
Decision
Conditions
When fan speed does not increase
Supposed
Causes
Disconnection, short circuit or disengagement of connector in fan motor harness
Faulty fan motor (disconnection, poor insulation)
Abnormal signal from fan motor (faulty circuit)
Faulty PCB
Instantaneous fluctuation of power supply voltage
Fan motor lock
(Caused by motor or other external factors)
Fan does not turn due to a tangle of foreign matters.
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