Dc Motor - Daikin F-Series Service Manual

SiEN12-710A

4.4.2 DC Motor

A6
Remote Control
Display
Method of
The rotation speed detected by the Hall IC during fan motor operation is used to determine
Malfunction abnormal fan motor operation.
Detection
Malfunction
When the detected rotation speed does not reach the demanded rotation speed of the target
tap, and is less than 50% of the maximum fan motor rotation speed.
Decision
Conditions
Supposed
" Operation halt due to short circuit inside the fan motor winding.
Causes " Operation halt due to breaking of wire inside the fan motor.
" Operation halt due to breaking of the fan motor lead wires.
" Operation halt due to faulty capacitor of the fan motor.
" Detection error due to faulty indoor unit PCB.
Service Diagnosis
Troubleshooting
113