Panasonic WH-SDC09H3E8 Service Manual page 177

16.5.17 Abnoraml 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.
Troubleshooting:
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
For safety reason and to prevent component breakdown,
always switch off the power before remove and connect the component.
Caution
YES
YES
177
NO
● Correct external thermistor 2 sensor
connector
NO
● Change external thermistor 2