200
19.5.11 Abnormal Zone 1 Sensor (H43)
Malfunction Caused:
1 Faulty connector connection.
2 Faulty buffer tank sensor.
3 Faulty indoor sub PCB.
Abnormality Judgment:
Continue for 5 seconds.
For safety reason and to prevent
component breakdown, always switch
off the power before remove and
connect the component.
NO
YES
YES
Check plug out connector from zone 1 connector sub PCB in
match?
the PCB measure resistance of zone 1 sensor characteristic
Abnormal zone 1 sensor
Check the turn off power check connector connection
Normal?
●
Poor contact
●
Correct connection
NO
●
Defective zone sensor
●
Defective zone sensor
●
Replace sensor
●
Defective PCB
●
Replace PCB
Caution
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