Daikin FTK(X)M-P Series, Service Manual

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SiMT041509E Troubleshooting
Service Diagnosis 56
4.4 Fan Motor (DC Motor) or Related Abnormality
Error Code
A6
Method of Error
Detection The rotation speed detected by the Hall IC during fan motor operation is used to determine
abnormal fan motor operation.
Error 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
„
Remarkable decrease in power supply voltage
„
Layer short inside the fan motor winding
„
Breaking of wire inside the fan motor
„
Breaking of the fan motor lead wires
„
Defective capacitor of the fan motor
„
Defective indoor unit PCB