Slom

Recently my 2006 C230 started blowing hot air out of the left vents when the AC is on. There is freon in the system, I was wondering why its doing this and what I can do to fix it,

Thanks

slammer111

Is there enough freon in the system?

If the low pressure switch is triggered then the system won't turn on.

Slom

Yeah there is enough freon, I just replaced it.

I'm not sure where the low pressure switch is. The air comes out its just not cold.

Ian M2

I don't have a fix, but maybe a possible source of the problem. Maybe your mixer flap is stuck in the "hot" position. I suggest this because I have an 01 that only blows cold air from some of the vents, and I know some of the actuators are stuck (including one of the defrosters....) If you have access to a scan tool such as a STAR, or Icarsoft, the sticky actuators may register codes in the system (mine do)

Slom

I took the panel off and it looks as if everything is fine. Nothing is stuck and all the switches are working. The driver side vents won't blow cold. They blow out hot air when the heater is on and when the AC is on it is just air, not cold, not hot. The passenger side blows cold air so I am confused.

ygmn

What about the right vents? are they cold?

If YES then not AC issue but blend actuators issue