Samsung
Air conditioner
Select the code shown on your appliance to review its meaning and possible cause.
Room temperature sensor issue
→C154This code is associated with an open or short circuit in the room-temperature sensor.
C121Indoor fan motor protection
→The indoor fan motor may have entered protection mode because of abnormal voltage or an internal component issue.
We currently provide a verified sample and will add more codes after checking official sources.
LG Air conditioner →