Troubleshooting for SA Indoor Unit - FCQG, FFQ, FHQ, FDBQ, FBQ Series SiBE121135
288 Service Diagnosis
Troubleshooting FHQ Series
Note: There is a possibility of open phase power supply, also check the 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
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.
Are X20A or X26A
or both properly
connected?
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