Service Manual

SiUS121502E Troubleshooting for CTXS, FTXS, CDXS, FDXS, FVXS Series
Service Diagnosis 119
5.3 Fan Motor or Related Abnormality
5.3.1 DC Motor (CTXS, FTXS, FVXS Series)
Error Code
A6
Method of Error
Detection
The rotation speed detected by the Hall IC during fan motor operation determines 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