`Air-Conditioning`

[bossjohnc]

QUOTE(`arosa-beeftex`)

The best way to demist is to switch on the recirc button, switch the dial to screen or even between screen/feet , and full on the speed control with the a/c switched on.

Interesting... in the loop you can't have recirc on while the blowers are pointed toward the screen! Looks like you can in the arosa...

[Jabo]

QUOTE(snoopstah)

Apparently they do `de-gas` quite easily - a lot of the Mk4 Golf boys get it regassed every three years or so.

How do they know that?

Any of them got a set of high pressure gauges to check o the port?

EDIT: sorry to be quite sour about that stuff but some garages tell customers so much crap I wonder how come they manage to withold maniacal lughter while doing so? style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

There's more than one reason to malfunctioning of a car `air-con` system.

It's enough to have really stuffed condenser to stop it working and all it needs is a can of pressurised air to clean the thing or mains pressure wash if really gunked up then come sensors, belt, dodgy connection, faulty fans causing freezing of the evaporator.... Car systems supossed to have high dynamic loading capacity to withstand engine vibrations and driving loads.

If sb switches compressor on and off dozens of times during 15 minutes ride...

I am not saying it's rubbish snoop, I am just sceptical in this particular matter. Even the most car savvy peeps usually have no clue towards reforgeration technologies and belive what they are told....

But again, I do not think you are making it up and they must have had their units failed fall over on them, was it due to leakage or not... I wasn't there to tell style="vertical-align:middle" emoid=";)" border="0" alt="wink.gif" />

[Snoopy]

It's not a case of them failing, as I understand it - just a lot of people seem to complain that the aircon doesn't get properly cold after 3 years or so, and the general recommendation is to get a `re-gas`, which seems to fix it.

Mine still seems OK on the Lupo, and that's 3 years old... but equally, it's hard to tell if it's really good, or if you're just used to it - maybe if I got a regas, I'd suddenly find it pumped out much cooler air.

[Jabo]

Yeah, I know what you're saying here.

So after three years `air-con` doesn't pump as cold as it should. You take your car to a specialist or a garage with a vacuum pump, et of gauges and certified muppet able to buy legally refrigerant (mind you, you can go to B&Q and charge your system with propane as well but that requires different oil and oil separator).

He tells you without even looking 'It looks like a regass mate', you say 'Oh well, if it needs to be done...'

You go away, blocke cleans condenser, changes pollen filter (which in most cases stealerships do not change at all) -15 mins jobbie - and charges you for full regass style="vertical-align:middle" emoid=":D" border="0" alt="biggrin.gif" /> - easy money.

When there's a leak in a highly pressurised system as air cons are the whole charge simple vents to the atmosphere (around 50pisg) and your air con does not work at all style="vertical-align:middle" emoid=";)" border="0" alt="wink.gif" />.

Seals there are metal, not rubber, if they fail they fail for good.

Maybe it is possible to have a leak which vents only small amount of refrigerant and then seals itself again but.... how probable that is?

In any case, as usual I stand to be corrected if wrong here style="vertical-align:middle" emoid=":P" border="0" alt="tongue.gif" />