Troubleshooting by Indication on the Remote Controller SiBE37-701_B
263 Troubleshooting
3.4
“
A6
”
Indoor Unit: Fan Motor (M1F) Lock, Overload
Remote
Controller
Display
A6
Applicable
Models
FXAQ20~63PV1, FXFQ20~125P8VE
Method of
Malfunction
Detection
Abnormal fan revolutions are detected by a signal output from the fan motor.
Malfunction
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
Faulty fan motor
(Broken wires or faulty insulation)
Abnormal signal output from the fan motor (Faulty circuit)
Faulty 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 matters blocking the fan.
Disconnection of the connector between the high-power PCB (A1P) and the low-power PCB
(A2P).
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