Daikin 4MXS-R Series Service Manual page 169

SiUS121736EA
5.3.2 Indoor Fan Motor (AC Motor) or Related Abnormality
Applicable
CDXS07/15/18/24LVJU
Models FDXS09/12LVJU
A6
Error code
Method of Error
The rotation speed detected by the Hall IC during indoor fan motor operation determines abnormal
Detection fan motor operation.
Error Decision
The detected rotation speed does not reach the demanded rotation speed of the target tap.
Conditions
Supposed
Causes
Service Diagnosis
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
Troubleshooting for RA Indoor Unit
156