Troubleshooting by Error Code SiUS331604E
139 Service Diagnosis
4.4 Indoor Fan Motor (M1F) Lock, Overload
Error Code A6
Applicable
Models
FXFQ, FXUQ, FXEQ, FXMQ07-12PB, FXAQ
Method of Error
Detection
Abnormal fan revolutions are detected by a signal output from the fan motor.
Error Decision
Conditions
When the fan revolutions do not increase
Supposed
Causes
Broken wires in, short circuit of, or disconnection of connectors from the fan motor harness
Defective fan motor
(Broken wires or defective insulation)
Abnormal signal output from the fan motor (defective circuit)
Defective indoor unit main PCB
Instantaneous disturbance in the power supply voltage
Fan motor lock
(Due to motor or external causes)
The fan does not rotate due to foreign matter blocking the fan.
Disconnection of the connector between the high-power PCB (A1P) and the low-power PCB
(A2P) (FXMQ07-12PB only)
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