Panasonic WH-ADF0309J3E5CM Service Manual page 259

25.2.13 Abnormal 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.
Abnormal external thermistor 1
Check CN205 connector on sub PCB normal?
Disconnect sensor from sub PCB measure resistance of sensor
and compare against sensor characteristic same?
Change sub PCB
YES
YES
259
For safety reason and to prevent
component breakdown, always switch
Caution
off the power before remove and
connect the component.
NO
● Correct connection
NO
● Change external thermistor 1