Troubleshooting
SiMT041311E
137
Service Diagnosis
2.11 Fan Motor (DC Motor) or Related Abnormality
Error Code
A6
Method of Error
Detection
The rotation speed detected by the microcomputer during fan motor operation is used to
determine abnormal fan motor operation.
Error Decision
Conditions
The detected rotation speed is less than 50% of HH tap when the maximum fan motor
rotation speed is commanded.
The fan does not rotate for more than 5 seconds after operation starts.
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 indoor unit PCB (A1P)