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IV-12
SM831148
4. Service procedures
No
No
Yes
Yes
Check the outdoor unit
control PCB.
Replace if PCB has failed.
Sensor trouble
(5) [Alarms “F04,” “F06,” “F07,” “F08,” “F12”]
Are connectors
CN020, 021, 022, 023,
and 024 (TD, TO, C1, C2, and
TS sensors) connected
correctly to the outdoor unit
control PCB?
Correct the connector
connections.
Are the TD, TO, C1,
C2, and TS sensor resistance*
characteristics OK?
Replace the TD, TO, C1,
C2, or TS sensor.
* Refer to “4-4. Table of Thermistor Characteristics.”