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Author Topic: Vectra c air con warm when fan on  (Read 1418 times)

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megaomega123

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Vectra c air con warm when fan on
« on: 20 May 2014, 11:25:16 »
Hi All
I need to post here now as I defected to the vectra. Vectra forums are pretty useless compared to the help I have had from here in the past. Hopefully somebody will understand my problem:
I have a strange problem with my air con. When temp is set to lo on both sides and the fan speed is 0, I can feel nice cold air as I drive along. As soon as I put the fan at any speed the air flow becomes warm. Had a regas last year and it worked for a little while. There is obviously gas in the system as I can feel it when the fan is off.
Why does it warm up when the fan is running at any speed?
2005 vectra c 3.2v6 gsi

TIA
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05omegav6

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Re: Vectra c air con warm when fan on
« Reply #1 on: 20 May 2014, 11:56:03 »
Because the airconditioning isn't working...

Does the compressor clutch engage as it should? Should clunk as it kicks in, along with a slight increase in revs.

Also, is the aircon switched on in the cabin? The snowflake button on the climate panel should be illuminated :y
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megaomega123

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Re: Vectra c air con warm when fan on
« Reply #2 on: 20 May 2014, 12:32:28 »
Compressor is spinning up as it should. Air con is switched on in the cabin. All working as it should until I switch the fan on  :-\
It's like when you switch the fan on it draws hot air from somewhere.
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biggriffin

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Re: Vectra c air con warm when fan on
« Reply #3 on: 20 May 2014, 12:37:59 »
Needs a pressure test first, check the LP port first, also bottom of the condenser.

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05omegav6

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Re: Vectra c air con warm when fan on
« Reply #4 on: 20 May 2014, 13:18:17 »
Does the plumbing to the evaporator get cold like the Omega one? If so might be a control panel fault...

Does that have the two temperature controls, one either side with the blue and red dots and the temp settings displayed on the screen :-\
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megaomega123

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Re: Vectra c air con warm when fan on
« Reply #5 on: 20 May 2014, 13:44:46 »
Quote from: Taxi Al on 20 May 2014, 13:18:17
Does the plumbing to the evaporator get cold like the Omega one? If so might be a control panel fault...

Does that have the two temperature controls, one either side with the blue and red dots and the temp settings displayed on the screen :-\
Yes it has the controls you describe. Not sure that the pipework is getting cold, will need to check. I used to get dripping and small puddles from the omega.
Just cant understand why it is icy until the blower motor is switched on  ???
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05omegav6

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Re: Vectra c air con warm when fan on
« Reply #6 on: 20 May 2014, 13:51:54 »
If the control panel has had a fit, anything is possible...
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