Daikin air conditioner C9: what it means and when to call a pro · Belarus
Severity: Stop nowDaikin air conditioner error C9. A temperature sensor circuit is reporting a fault, usually a failing sensor or a loose or damaged connection to it.
Meaning
A temperature sensor circuit is reporting a fault, usually a failing sensor or a loose or damaged connection to it.
Severity
Stop now
Stop. Switch it off and call a pro
Steps are not shown for this code because no qualified person has reviewed them yet. What is safe: switch it off and call a pro.
Source
Simple Self-Diagnosis by Malfunction Code After Sales Service Division (SM-TS3), Daikin Industries
The repair: Air conditioner error code repair
Prices for repairs in Belarus are in BYN.
Other Daikin codes
- Daikin E5 The compressor is locked or overloaded, often because airflow around the outdoor unit is blocked by leaves or obstructions.
- Daikin E7 A fan motor fault: the fan motor is not running properly, possibly because something is blocking the fan, grille or outdoor unit.
- Daikin U0 Refrigerant level is low, possibly from a leak, so cooling is weak.
- Daikin U2 The supply voltage to the unit is out of range or unstable, usually because of a problem with the mains supply or the installation wiring.
- Daikin U4 Communication fault between the indoor and outdoor units (or with the remote), usually caused by a wiring, connection or control board problem.
Brands in our catalog for air conditioner: Daikin, LG, Samsung. The same code on another brand is not in the catalog yet, and we do not guess what it means.