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MB 180 W120(1962) MB C200 W203(2007)
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76 Posts
Discussion Starter #1
My W 203 C180 compressor blows hot air when a/c is switched on.
But it blows cold if temp is set at minimum (18^C).
Any setting at above 18^C, immediately blows hot air. No loss of freon.
Any suggestions welcome, Thanks.
 

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Coupe/Convertible Forums Moderator
CURRENT: 2011 SL550, 2011 C300 FORMER: ML350, CLK550 Cabriolet, C240, ML320, 300TD
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18,940 Posts
It's likely a bad sensor in the overhead control panel. If you have a sunroof, try opening it and see if that makes a difference. If so, that's it. Here are the details on a cheap fix:

 
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