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S60 & V60 '11-'18 / XC60 '09-'17 General Forum for the P3-platform 60-series models |
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Aircon failingViews : 3108 Replies : 27Users Viewing This Thread : |
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Nov 12th, 2019, 15:02 | #1 |
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Aircon failing
Inside of the windscreen kept misting up on Friday night, so had to keep engaging the 'demist' button to keep it clear. It was hard to tell directly if the aircon was working as the outside air temperature was around freezing, but there seemed to be little dehumidifying effect happening.
Anyone else needed a regas at less than 5 years old? Assuming I still have the original fill, does anyone know if a dye would have been loaded when new that might now identify any leakage?
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Nov 12th, 2019, 15:12 | #2 | |
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Any chance you have been using ECO+ at that trip? |
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Nov 12th, 2019, 15:21 | #3 |
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No, I don't have it.
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Nov 12th, 2019, 16:21 | #4 | |
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Nov 12th, 2019, 17:06 | #5 | |
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No, I definitely didn't have the recirc on, I did check! I realise that vehicle aircon systems aren't meant to leak, however my long experience with cars tells me that unfortunately they often do need occasional regassing, although at less than 5 years might suggest an abnormal condition possibly involving stone damage or corrosion to the condenser? I won't be regassing it myself... I did once try this on my Honda Accord using a Halfords can of R134/PAG and it was such a disaster that I returned it for a refund! I'm pretty sure that the legal responsibility is on whoever refills it to satisfy themselves that there is no gross leak before regassing, although they generally rely upon the vac'ing out stage for this confirmation rather than the proper nitrogen pressurisation. Any idea if there would be any UV dye present before I fit my trusty old UV bulb into my garage lead lamp and poke around looking for glowing blobs? I've got a long journey this evening. I'll have a play with the AC controls when I'm bored on the motorway.
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Nov 12th, 2019, 17:28 | #6 | |
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It is a bit difficult to do a performance test when the Ambient temperature is near zero ... you could put it on and go under the bonnet and feel the two Alloy AC pipes the small one should be warm and the large one noticeably cold like ice .
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Nov 12th, 2019, 17:33 | #7 | |
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I guess that the system pressure reading can be accessed with suitable diagnostics? What's a typical minimum value?
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Nov 12th, 2019, 18:51 | #8 | |
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You can also view the ac relay operation to see if it's coming on when expected. I don't know the gas pressure off hand but you just double click on the value in Vida and it will explain what you're looking for. A damp cabin filter or carpeting can also cause misting so check all windscreen drains to make sure water is being diverted and drained away as designed.
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Nov 12th, 2019, 21:29 | #9 | |
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The only way you can tell if the gas is low is to take it out and weigh it , that is what the AC machine can do .
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Nov 14th, 2019, 01:14 | #10 |
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You and clan are way ahead of me in the technicalities of the Air Con but mine needed doing in spring 2018 at 3.5 years old.
As the weather got warmer I noticed the AC wasn't cooling, did some research on t'interweb and got a firm called Coolcar who did a service on it at home for £69. It's worked perfectly since and if you check their site the service includes more than just a regas. They're a franchise operation but don't have national coverage so whether they cover your neck of the woods or whether, you'd want to use them given your DIY skills I don't know but the price seemed very reasonable for about an hours work + travel. |
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