F40
Panasonic
Panasonic air conditioner error F40
Meaning
There is a problem with the outlet temperature sensor. CN-TH1 outdoor unit circuit board connector (open circuit or short circuit)
General meaning for the brand's models, unless a model's own manual says otherwise.
Meaning
There is a problem with the temperature sensor on the compressor suction line (SUC T. TEMP). Connector for outdoor unit CN-TH2 (open circuit or short circuit). Service valve closed
General meaning for the brand's models, unless a model's own manual says otherwise.
Causes and how to check
- the cited manual page, and follow-up questions
No account needed to look up codes.
Guides
- Checking an air conditioner temperature sensor (thermistor)
How to check the room, coil or discharge sensor when the unit reports a sensor error: measure its resistance and compare with the exact model's table.