Date: Sun, 02 Sep 2007 10:33:08 GMT
From: "Mrcheerful" <>
Subject: Re: [XP] Sporadic aircon

"Colin Stamp" <> wrote in message news:as2ld3p0dlqe5u7bi466nscbdckl8bhpvmnospamcom... > On Sun, 02 Sep 2007 00:51:37 +0100, Harry Bloomfield > <> wrote: > >>Colin Stamp wrote on 02/09/2007 : >>>> >>>> Have you considered a possible mixing valve issue? Maybe the A/C is >>>> working but warm air is being sent to you? >> >>> Yep. It's definitely the evaporator warming up. The system passes a >>> self-test which includes exercising the flap-valve motors, and the >>> windows mist-up during a failure. >> >>Just a suggestion.... >> >>On the evaporator coils there should be a temperature sensor. The >>sensor is there to check the temperature and make sure it does not fall >>below 0deg C, such that ice can form. Could it be that either this >>sensor is faulty, or that it is detection the formation of ice? >> >>Shortly after the a/c stops working, do you perhaps see a discharge of >>water from the drain? > > The anti-freeze sensor was top of my list when I only had the pressure > readings to go on, but since I put the LED in, it turns out that the > system is trying to run the compressor all the time during a failure. > None of the sensors or the control system are suspect any more. > > Cheers, > > Colin. then the clutch probably needs attention

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