S-Class (W220) 1999-2006: S 320 CDI, S 320, S430, S 500, S 600

Ac blows cool from center only

Old Jun 22, 2016 | 12:49 AM
  #1  
Tabassi88's Avatar
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S430
Angry Ac blows cool from center only

Hello everyone, so I have a 2001 s430 and recently the ac started acting weird. It now only blows cool air from center and vents and hot air from all the other vents. I've tried looking up the problem but every thread I read the never fixed the problem. Please help need ac to work live in Las Vegas where the heat is 120 degrees
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Old Jun 22, 2016 | 01:54 AM
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S-series 2003 S500 4matic
The problem you are describing may be a duo-valve. Here is a link about it and its replacement:
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Old Jun 22, 2016 | 10:16 AM
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Originally Posted by MikeKerr7
The problem you are describing may be a duo-valve. Here is a link about it and its replacement:
*NO HEAT* Mercedes W220 Duo Valve Replacement, S430, S500, S55, S600 - YouTube


Thank you I'll check to see if this is it
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Old Jun 28, 2016 | 11:30 AM
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2000 S500
I have a 2000 S500 with similar symptom. Mine turned out to be low on the refrigerant. Had the system evacuated, dryer replaced, and system charged - so far so good for almost 2 years now. You may want to check your refrigerant level.
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Old Jun 28, 2016 | 01:41 PM
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Thank you so far no luck on fixing it the refrigerate leave is fine. Also check the duo value and that's not the problem either
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