Troubleshooting for RA Indoor Unit SiBE18-821_C
356 Troubleshooting
4.3.2 DC Motor (Wall Mounted Type, Floor Standing Type)
Remote
Controller
Display
A6
Method of
Malfunction
Detection
The rotation speed detected by the Hall IC during fan motor operation is used to determine
abnormal fan motor operation.
Malfunction
Decision
Conditions
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.
Supposed
Causes
îš„
Disconnection of connector
îš„
Foreign matters stuck in the fan
îš„
Layer short inside the fan motor winding
îš„
Breaking of wire inside the fan motor
îš„
Breaking of the fan motor lead wires
îš„
Defective capacitor of the fan motor
îš„
Defective indoor unit PCB
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