Panasonic CS-VZ9SKE Service Manual page 125

17.4.24 F83 (Protection of Aluminium Electric Heater (Heatcharge) Temperature Over
Heating)
Troubleshooting
Check heater characteristics
(check heater resistance at 33Ω )
Check sensor characteristics
Check sensor conncetion
Check outdoor temperature sensor characteristics
Diagnosis Procedures and Cause
Yes
Yes
Yes
Yes
No
No
No
No
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Measures to be Taken
Replace the heater
Replace the sensor
Re-connect the connector
Replace the outdoor sensor
Replace the outdoor PCB