Indoor Fan Motor Or Related Abnormality - Daikin CTXG09QVJUW Service Manual

Troubleshooting for CTXG, CTXS, FTXS, CDXS, FDXS, FVXS Series
5.3

Indoor Fan Motor or Related Abnormality

5.3.1 Indoor Fan Motor (DC Motor) or Related Abnormality
Applicable CTXG09/12/18QVJUW(S)
CTXS07LVJU
Models
FTXS09/12/15/18/24LVJU
FVXS09/12/15/18NVJU
A6
Error Code
Method of Error The rotation speed detected by the Hall IC during indoor fan motor operation determines abnormal
fan motor operation.
Detection
Error Decision 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.
Conditions
Supposed
Causes
138
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
SiUS121632EA
Service Diagnosis