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Author Topic: A/C packed up  (Read 1273 times)

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Sir Tigger KC

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A/C packed up
« on: 12 August 2014, 09:01:54 »

So my love affair with A/C was short and sweet after regassing it a couple of months ago and having working A/C for the first time in years, yesterday it was blowing warm air!  :(

The compressor and fans are working, so where next? Condensor?  :-\
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Kevin Wood

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Re: A/C packed up
« Reply #1 on: 12 August 2014, 09:12:40 »

Is the low pressure pipe under the bonnet getting cool?
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Sir Tigger KC

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Re: A/C packed up
« Reply #2 on: 12 August 2014, 09:15:16 »

Is that the one with the trumpet type thingie?  :-\  ::)

I'm an A/C ignoramus!  ;D
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05omegav6

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Re: A/C packed up
« Reply #3 on: 12 August 2014, 10:20:12 »

Yup :y next to the throttle, above the PAS pump...

Ideally it will be covered in condensation and be cold to the touch :y

If it is hot, then you have an issue :'(

If the valves have been changed then the condenser is probably toast...
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Kevin Wood

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Re: A/C packed up
« Reply #4 on: 12 August 2014, 10:41:48 »

Condenser failure mode would be a leak, though, which would stop the compressor due to low pressure. :-\

If you start it up from "cold", you should feel the low pressure pipe mentioned getting cold quite quickly.

Also, the high pressure pipe, which is down in front of the aux. pullies - a little U shaped pipe with one of the fill valves on it, should start getting warm.

If this happens to start with, and there's some cooling, but it peters out, it could be that you have moisture in the refrigerant circuit that's freezing up and blocking it or that the expansion valve is allowing the evaporator to get so cold that it freezes up and restricts airflow through it.

If the pipes stay cold/hot respectively, but it's blowing warm air, it could be one of the blending flaps directing hot air into the cabin or the HBV not switching off the hot water flow.

If they don't stay or get hot/cold it could be the expansion valve not allowing the evaporator to get cold enough.

Ultimately, you probably need to get an aircon guy to measure the pressures and diagnose it that way but at least you can rule out any issues not related to the aircon circuit itself.

Why not take it back to the buy who refilled it? He might take a look FOC, especially considering it's an offence to fill a leaky system.
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tunnie

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Re: A/C packed up
« Reply #5 on: 12 August 2014, 11:35:50 »

Has the valve been checked?  :y
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biggriffin

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Re: A/C packed up
« Reply #6 on: 12 August 2014, 14:39:08 »

As tunnie says valves first, then bottom of the condenser, normally falls apart. :)
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Sir Tigger KC

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Re: A/C packed up
« Reply #7 on: 12 August 2014, 17:01:28 »

I havn't had a chance to have a proper look today, but I did feel the pipes and the low pressure pipe was warm and the bottom one quite hot.  I'll investigate further tomorrow and thanks for the replies!  :y :y :y
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omega3000

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Re: A/C packed up
« Reply #8 on: 12 August 2014, 17:05:57 »

Was there any dye put in last time  ???
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Sir Tigger KC

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Re: A/C packed up
« Reply #9 on: 12 August 2014, 18:35:54 »

Not sure to be honest Emd.  :-\  Although they did tell me it was tested for leaks.  :y
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omega3000

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Re: A/C packed up
« Reply #10 on: 12 August 2014, 21:08:06 »

Had my ac done but then it went warm again after a day or so  :( Took the black plastick screw cover off and seen the yellow dye slightly bubbling out the valve so replaced that and no more leaks  :y
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Sir Tigger KC

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Re: A/C packed up
« Reply #11 on: 12 August 2014, 22:10:16 »

If the monsoon has passed tomorrow I'll have a look!  :y
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