Daikin air conditioner error C4
Meaning
Indoor heat exchanger thermistor or related abnormality
General meaning for the brand's models, unless a model's own manual says otherwise.
Meaning
Indoor heat exchanger (1) thermistor short / open
General meaning for the brand's models, unless a model's own manual says otherwise.
Meaning
Indoor coil sensor
General meaning for the brand's models, unless a model's own manual says otherwise.
Meaning
Malfunction of liquid pipe thermistor for heat exchanger
General meaning for the brand's models, unless a model's own manual says otherwise.
Meaning
Indoor heat exchanger thermistor abnormality
Models
FTKB09AXVJU, FTKB12AXVJU, FTKB18AXVJU, FTKB24AXVJU, FTKN09AXVJU, FTKN12AXVJU, FTKN18AXVJU, FTKN24AXVJU, FTXB09AXVJU, FTXB12AXVJU, FTXB18AXVJU, FTXB24AXVJU, FTXN09AXVJU, FTXN12AXVJU, FTXN18AXVJU, FTXN24AXVJU, RKB09AXVJU, RKB12AXVJU, RKB18AXVJU, RKB24AXVJU, RKN09AXVJU, RKN12AXVJU, RKN18AXVJU, RKN24AXVJU, RXB09AXVJU, RXB12AXVJU, RXB18AXVJU, RXB24AXVJU, RXN09AXVJU, RXN12AXVJU and 2 more
Meaning
Faulty heat exchanger temperature sensor
Models
ATKB25ZVMV, ATKB35ZVMV, ATKF25ZVMV, ATKF35ZVMV, FTKB25ZVMV, FTKB35ZVMV, FTKB50ZVMV, FTKB60ZVMV, FTKF25ZVMV, FTKF35ZVMV, FTKF50ZVMV, FTKF60ZVMV, FTKF71ZVMV, FTKM25AVMV, FTKM35AVMV, FTKM50AVMV, FTKM60AVMV, FTKM71AVMV
Meaning
Indoor heat exchanger thermistor short/open
Models
FTXN-LV1B9, RXN-LV1B9
Causes and how to check
- 3 possible causes
- the repair procedure printed in the service manual
- the cited manual page, and follow-up questions
No account needed to look up codes.
Model series: ATKB, ATKF, FTKB, FTKF, FTKM, FTKN, FTXB, FTXN, RKB, RKN, RXB, RXN
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.