Panasonic WH-MXC09J3E8 Service Manual page 166

17.5.17 Abnormal External Thermistor 2 (H68)
Malfunction Caused:
1 Faulty connector connection.
2 Faulty room temperature zone 2 sensor.
3 Faulty indoor sub PCB.
Abnormality Judgment:
Continue for 5 seconds.
Abnormal external thermistor 2
Check connector CN205 on sub PCB normal?
Check resistance of external thermistor 2 compare against
characteristic of external thermistor same?
Change sub PCB
YES
YES
Caution
NO
● Correct external thermistor 2 sensor
connector
NO
● Change external thermistor 2
166
For safety reason and to prevent
component breakdown, always switch
off the power before remove and
connect the component.