Malfunction Of Indoor Unit Fan Motor - Daikin E-Series Service Manual

Troubleshooting for SkyAir Indoor Unit
5.5

Malfunction of Indoor Unit Fan Motor

A6
Remote
Controller
Display
Applicable FFQ, FCQ, FBQ
Models
Method of Detection of abnormal fan speed by signal from the fan motor
Malfunction
Detection
Malfunction When fan speed does not increase
Decision
Conditions
Supposed
Causes
336
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.
SiAU18-715
Troubleshooting