I need some advice on my 1979 280CE ACC system. The AC quit working about a month ago now my defroster works and blows warm air but the other switches don't seem cause any change with the exception of the bi-level switch. I can hear something happening behind the dash I think the doors are opening but still no blower. The servo makes a noise like its working when I turn the power on so I don't think thats the problem but I am not sure. Any help you can give me would be most appreciated.

Jkirk409