Sanyo C4272R Service Manual page 158

(5) [Alarms "F04," "F06," "F07," "F08," "F12"]
1
2
3
4
5
6
Are connectors
CN020, 021, 022, 023,
and 024 (TD, TO, C1, C2, and
TS sensors) connected
correctly to the outdoor unit
control PCB?
Yes
Are the TD, TO, C1,
C2, and TS sensor resistance*
characteristics OK?
Yes
Check the outdoor unit
control PCB.
Replace if PCB has failed.
Sensor trouble
No
No
* Refer to "4-4. Table of Thermistor Characteristics."
IV-12
4. Service procedures
Correct the connector
connections.
Replace the TD, TO, C1,
C2, or TS sensor.
SM831148