Panasonic WH-UD05JE5 Service Manual page 206

19.5.17 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
206
For safety reason and to prevent
component breakdown, always switch
Caution
off the power before remove and
connect the component.
NO
● Correct external thermistor 2 sensor
connector
NO
● Change external thermistor 2