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 Control
Display
Applicable
FFQ-B
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
" Disconnection, short circuit or disengagement of connector in fan motor harness
Supposed
" Faulty fan motor (disconnection, poor insulation)
Causes
" Abnormal signal from fan motor (faulty circuit)
" Faulty PCB
" Instantaneous fluctuation of power supply voltage
" Fan motor lock
" Fan does not turn due to a tangle of foreign matters.
286
(Caused by motor or other external factors)
SiENBE18-621
Troubleshooting