Panasonic WH-MXC09J3E8 Service Manual page 165

17.5.16 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
Caution
NO
● Correct connection
NO
● Change external thermistor 1
165
For safety reason and to prevent
component breakdown, always switch
off the power before remove and
connect the component.