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16.5.16 Abnoraml External Thermistor 1 (H67)
Malfunction Caused:
1 Faulty connector connection.
2 Faulty room temperature zone 1 sensor.
3 Faulty indoor sub PCB.
Abnormality Judgment:
Continue for 5 seconds.
YES
●
Correct connection
NO
●
Change external thermistor 1
NO
YES
Disconnect sensor from sub PCB measure resistance of sensor
and compare against sensor characteristic same?
Abnormal external thermistor 1
Check CN205 connector on sub PCB normal?
Change sub PCB
Troubleshooting:
For safety reason and to prevent component breakdown,
always switch off the power before remove and connect the component.
Caution
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