Panasonic WH-SXC09H3E8 Service Manual page 180

16.5.16 Abnoraml 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
180
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