Troubleshooting for SA Indoor Unit SiBE18-821_C
366 Troubleshooting
5.3 Fan Motor or Related Abnormality (FHQ Series)
Remote
Controller
Display
A6
Method of
Malfunction
Detection
The signal from the fan motor detects abnormal fan speed.
Malfunction
Decision
Conditions
When the fan rotations are not detected while the output voltage to the fan is at its maximum
Supposed
Causes
îš„
Defective indoor fan motor
îš„
Broken or disconnected wire
îš„
Defective contact
îš„
Defective indoor unit PCB
Troubleshooting
Note: There is a possibility of open phase power supply, also check power supply.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Replace the indoor unit PCB.
NO
(R12862)
About 12 VDC?
YES
Connect them correctly.
YES
NO
Are X20A or
X26A or both properly
connected?
Check the connections of X20A
and X26A.
Disconnect X26A and turn the
power on.
Check the voltage between the
pins 1 and 3 of X26A.
Check the indoor unit fan motor
and motor wiring.
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