A/c not working it isn't doing nothing
My air conditioner and heat nothing blowing out not working at all no fan either on 2006 Mercedes-Benz SL500
To many possibilities to guess online. Do you have any test equipment , to check fuses ? Any diagnostic experience? Maybe check "alldatadiy.com" , for specific info on system description , circuit tests and control unit tests. Not free , but if you're doing this yourself , it may be well worth it.Understanding what you're dealing with is the first step in proper diagnosis.