Troubleshooting for SA Indoor Unit SiBE121135_A
187 Service Diagnosis
6.3 Fan Motor or Related Abnormality
6.3.1 AC Motor (FFQ, FHQ, FDBQ Series)
Error Code A6
Method of Error
Detection
The signal from the fan motor detects abnormal fan speed.
Error Decision
Conditions
The fan rotations are not detected while the output voltage to the fan is at its maximum
Supposed
Causes
îš„ Disconnection, short circuit or disengagement of connector in fan motor harness
îš„ Defective fan motor (disconnection, poor insulation)
îš„ Abnormal signal from fan motor (faulty circuit)
îš„ Defective indoor unit PCB
îš„ Momentary fluctuation of power supply voltage
îš„ Fan motor lock
(Caused by motor or other external factors)
îš„ Fan does not rotate due to tangled foreign matters.
Troubleshooting
NO
YES
Is the
harness from the
fan motor correctly
connected to the
indoor unit
PCB?
YES
Is there any
foreign matter around
the fan?
NO
NO
Is there
short circuit between
the terminals?
YES
Turn off the power supply.
Check the fan motor
connector. (See the Note.)
Remove the foreign matter.
Connect the connector correctly.
FFQ series: X20A
FHQ series: X20A, X26A
FDBQ series: X21A
Replace the fan motor.
Replace the indoor unit PCB.
(R18391)
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
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