Daikin Mini-Split Code CC
Warning
Humidity sensor abnormality. The indoor unit's humidity sensor is not communicating or has failed.
Manual wording: “CC Humidity sensor abnormality”
Documented for: FTXM-W/V (Daikin Atmosphera)
Likely causes, most common first
- Disconnection of connector
- Defective humidity sensor
- Defective indoor unit PCB
What you can safely check yourself
- Turn the system off at the breaker or disconnect switch and back on once
When to call a technician
The humidity sensor PCB is inside the indoor unit and has to be reseated or replaced by a technician.
A Daikin mini-split throwing this code repeatedly has a reason — clearing the code without fixing the cause just hides it.
Source
- Service Manual - Inverter Pair Wall Mounted Type FTXM-W/V Series (SiUS042113EA) (Daikin, FTXM-W / FTXM-V (Daikin Atmosphera) wall-mount heat pump) · checked 2026-08-25