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W204 Air Con only Blowing warm/hot air

Colly69

New Member
Joined
Sep 20, 2012
Messages
21
Car
C200 CDI Elegance (W204)
Hi,

I started noticing a couple of days ago that the radiator fan was kicking in for a few seconds after I'd turned the engine off, although this is unusual I wasn't overly concerned due to current spell of warm weather. However, on my way home from work today I noticed that the air con was only blowing warm/hot air into the cabin, I turned it off, set the temp to cold but problem still persisted.

Any ideas/thoughts.

Cheers.
 
I suppose start with the simple things like has the system got any refridgerant in it / does the AC compressor kick in (you don't want to leave AC switched on mind as not enough charge in the system can screw the compressor).

If the system has lost its charge - it could be you have a leak(s) or hole(s) in the condenser.

AC will need to be looked at by a specialist mind as will charging and doing a leak test if needed.
 
Cheers, further to my original post, I noticed when travelling to work this morning that the radiator/cooling fan started up as soon as I started the car and continued running till I shut the engine off. Starting to think its more than just an a/c problem.

Any suggestions/recommendations gratefully received.
 
I've just had the same problem on my C220, I took it to my friend who is a mechanic, where we found a plug on the bottom of the radiator, connecting to the a/c, had separated from its socket. Was an easy fix. You will need ramps to access it though!

Hope to of helped
 

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