Panasonic CS-HZ12RKE, Service Manual, Page: 95 / 133

95
17.4.11 H32 (Outdoor Heat Exchanger Temperature Sensor 2 Abnormality)
Malfunction Decision Conditions

During startup and operation of cooling and heating, the temperatures detected by the outdoor heat exchanger
temperature sensor are used to determine sensor errors.
Malfunction Caused

Faulty connector connection.

Faulty sensor.

Faulty PCB.
Troubleshooting
When abnormality indication starts again
Check the outdoor discharge pipe temperature sensor:
●
Plug out connector from the outdoor unit PCB
● Measure the resistance of the outdoor discharge pipe
temperature sensor
Is the measured resistance of the outdoor heat exchanger
temperature sensor matches the value specified in its
characteristic chart?
● Defect in outdoor discharge pipe
●
Replace the outdoor discharge pipe
temperature sensor
● Defect in outdoor unit PCB
● Replace the outdoor unit PCB
Check the connector connection:
●
Turn off the power
● Check the connector connection
Is the connector connection normal?
YES
● Connector poor contact
● Correct the connection
NO
NO
YES
temperature sensor
Caution
For safety reason and to prevent
component breakdown, always switch
off the power before remove and
connect the component.