[W126 Coupe] AC Compressor, heating

Tue Mar 8 14:29:10 EST 2005

James,

I'm not positive, but I believe in defrost mode (at least on my 87 SEC) I have no control over the temperature or speed of the fan, it seems to come out full blast high heat.  I think somehow the system must sense excess humidity and find a way to kick in the compressor to take some of that moisture out of the air in the cabin while still defrosting your windows.  Maybe the system is smart enough to regulate what temp things are moving at and when to cycle the compressor on and off.

Otherwise, in my car again I have climate control, not heat and a/c.  So somehow the compressor must be sent a signal to kick on at certain points to cool the car versus stay off to the car can be heated.  There must be a temp sensor or something that causes this to happen where it senses when to leave the compressor off and when to turn it on.  

Maybe somebody with better technical knowledge and less guessing can help clear this up!

Markus

 --- On Tue 03/08, Habib Smith < habiblynx at hotmail.com > wrote:
From: Habib Smith [mailto: habiblynx at hotmail.com]
To: mbcoupes at mbcoupes.com
Date: Tue, 8 Mar 2005 14:14:16 -0500
Subject: [W126 Coupe] AC Compressor, heating

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<DIV>Markus,</DIV>
<DIV>See, I kind of remember reading that the compressor ties in with the 
defroster, which is what led me to ask about the heating.</DIV>
<DIV>Any idea what the compressor actually does in order to cool the interior? 
Or how that system generally works? </DIV>
<DIV>Thanks,</DIV>
<DIV>James</DIV></BODY></HTML>
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