S04
Panasonic
Panasonic air conditioner error S04
Meaning
Comp. temperature sensor failure
General meaning for the brand's models, unless a model's own manual says otherwise.
Causes and how to check
- 1 checks in order
- 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.