16.5.11 Abnormal Zone 1 Sensor (H43)
1
Faulty connector connection.
2
Faulty buffer tank sensor.
3
Faulty indoor sub PCB.
Abnormality Judgment:
Continue for 5 seconds.
Abnormal zone 1 sensor
Check the turn off power check connector connection
Normal?
Check plug out connector from zone 1 connector sub PCB in
the PCB measure resistance of zone 1 sensor characteristic
match?
●
Defective PCB
●
Replace PCB
YES
YES
175
For safety reason and to prevent
component breakdown, always switch
Caution
off the power before remove and
connect the component.
NO
●
Poor contact
●
Correct connection
NO
●
●
Defective zone sensor
Defective zone sensor
●
Replace sensor