W215 klimatronic problem

[Borys]

Hmmmm a weird one
My climate control lost its ability to control temp. In LO I will have cooling but really cold. As soon I put temp to 13 heating works on max temp
Any thoughts?
I did replace the duo valve but no different
Will try tomorrow actual values maybe it will indicate something

 

[lexman8]

Could be an ECU problem. Have you put the system into diagnostic mode to check for fault codes, etc?

 

[Borys]

No faults
Will update later today