MXS Service Manual

SiUS121736EA Troubleshooting for RA Indoor Unit
Service Diagnosis 156
5.3.2 Indoor Fan Motor (AC Motor) or Related Abnormality
Applicable
Models
CDXS07/15/18/24LVJU
FDXS09/12LVJU
Error code A6
Method of Error
Detection
The rotation speed detected by the Hall IC during indoor 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.
Supposed
Causes
 Power supply voltage out of specification
 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