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A/C CLIMATE CONTROL UNIT PROBLEM OR MORE

  
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Joseph

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Since: Jun 15, 2006
Posts: 3



(Msg. 1) Posted: Thu Jun 15, 2006 7:35 am
Post subject: A/C CLIMATE CONTROL UNIT PROBLEM OR MORE
Archived from groups: alt>auto>mercedes (more info?)
Have '91 MB 420 SEL with failed A/C problem. Replaced Climate Control
Unit & A/C Relay and still compressor doesnt kick in nor blower.
Checked & replaced #5 Fuse with New One.............back-up lights is
in this group functions & the lights come-on with gear shift in
reverse. Pushed in A/C control unit buttons to activate the A/C &
nothing happens....engine is on and compressor doesnt come-on.
Coincidentally, my turn signal doesnt blink........is this a related
problem or WHAT? Anybody out there, I need HELP !! All sugestions and
assistance is greatly appreciated!!

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Tiger

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Since: Nov 10, 2005
Posts: 283



(Msg. 2) Posted: Thu Jun 15, 2006 12:24 pm
Post subject: Re: A/C CLIMATE CONTROL UNIT PROBLEM OR MORE [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
You probably got low refrigerant... it would never let you run AC if your
refrigerant is low. Make sure all the wires at the A/C drier is hooked up...
front driver side next to radiator... round cylinder thing... behind
headlight.

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Joseph

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Since: Jun 15, 2006
Posts: 3



(Msg. 3) Posted: Thu Jun 15, 2006 1:39 pm
Post subject: Re: A/C CLIMATE CONTROL UNIT PROBLEM OR MORE [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Do you have any info on where to find the Flasher, since my signal
lights dont light-up nor blink? I will check out the refrigerant level
later this afternoon......Thank you!!

Tiger wrote:
> You probably got low refrigerant... it would never let you run AC if your
> refrigerant is low. Make sure all the wires at the A/C drier is hooked up...
> front driver side next to radiator... round cylinder thing... behind
> headlight.
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Tiger

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Since: Nov 10, 2005
Posts: 283



(Msg. 4) Posted: Thu Jun 15, 2006 5:15 pm
Post subject: Re: A/C CLIMATE CONTROL UNIT PROBLEM OR MORE [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
I suggest you take the fuse out and replace it for the flasher... it is
usually the fuse... it look deceptive when in place. I never changed any
flasher on MB... it is not like US cars that flasher goes bad.
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trader41

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Since: Dec 28, 2004
Posts: 147



(Msg. 5) Posted: Fri Jun 16, 2006 3:29 am
Post subject: Re: A/C CLIMATE CONTROL UNIT PROBLEM OR MORE [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Tiger wrote:
> You probably got low refrigerant... it would never let you run AC if your
> refrigerant is low. Make sure all the wires at the A/C drier is hooked up...
> front driver side next to radiator... round cylinder thing... behind
> headlight.

Low refrigerant would account for the compressor not running, but what
about the blower? He says that doesn't run either. Does anything
work? How about heat?
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Joseph

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Since: Jun 15, 2006
Posts: 3



(Msg. 6) Posted: Fri Jun 16, 2006 7:37 am
Post subject: Re: A/C CLIMATE CONTROL UNIT PROBLEM OR MORE [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Regarding the AC unit, no blower activation, no compressor & no heat
that I can feel with hand on vent. Fuse @ #5 changed and all wires at
Dryer connected. Yet to check for Freon level in the system. What
instrument or divise is used & instructions to accomplish the check.
Does anyone out there have infor for me???

trader4.DeleteThis@optonline.net wrote:
> Tiger wrote:
> > You probably got low refrigerant... it would never let you run AC if your
> > refrigerant is low. Make sure all the wires at the A/C drier is hooked up...
> > front driver side next to radiator... round cylinder thing... behind
> > headlight.
>
> Low refrigerant would account for the compressor not running, but what
> about the blower? He says that doesn't run either. Does anything
> work? How about heat?
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