SiBE121021_C Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series
Service Diagnosis 327
Troubleshooting
NO
NO
NO
YES
YES
YES
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Correct the connection.
Replace the thermistor.
Correct the contact.
(R11299)
Replace the indoor unit PCB.
C4: Indoor heat exchanger thermistor
(R2T).
C9: Room temperature thermistor (R1T).
Check the connector
connection.
Is it connected properly?
Check the thermistor
resistance.
Is it normal?
Check the contact between
the thermistor and the indoor
unit PCB.
Is the contact OK?
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