-21
Panasonic
Panasonic air conditioner error -21
Meaning
There is a problem with the temperature sensor at the outlet of the condenser heat exchanger (COND TEMP). 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.
Related 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.