timwood2000 Posted March 4, 2005 Report Posted March 4, 2005 Why does the climate control automatically switch off the a/c when the outside temperature drop below 5 degrees? This is just when you need it to stop the windows misting up. I have had loads of cars with climate control that didn't do this. Quote
seatkid Posted March 4, 2005 Report Posted March 4, 2005 I just know I'm gonna get flamed by loads who say they know better :lol: , but....as far as I can determine, 1.9Tdi engines with climate control are fitted with variable displacement compressors (iirc by sanden), but I suspect they have limited ability to "throttle down" or are just speed sensitive. The Tdi climate control version has no evaporator deicing thermostat fitted, and no way of determining when the evaporator is icing up. It therefore relies on external temperature measurement only. In other words its a desgn compromise. Before any flamers start, AFAIK all Ford engine variants are fitted with fixed displacement pumps and deicng switches which force them to cycle ....... :P :P :P :P :P :P Quote
Ogben Schmutzel Posted April 13, 2005 Report Posted April 13, 2005 I recall something in my old V40 (with climate control) handbook about the aircon disconnecting (not word they used) when the ambient temperature is below a certain value and it may well have been 5 C. The light didn Quote
Guest V6 Owner (George) Posted May 24, 2005 Report Posted May 24, 2005 In my Ford Galaxy it has climate control so the air condidtioning is on all of the time and never switches off?, i know this because in the winter i was advised to switch on the air con as cold as possible for at least 10 minutes about twice a month and belive me it worked below 5 degrees. George Quote
Triple Trouble Posted March 30, 2006 Report Posted March 30, 2006 Just about to move from a Picasso with a/c to a 1.9 tdi and a similar question was raised on the PIC owners forum. Apparently the a/c won't operate below 5c to avoid freezing the compressor! Hope this helps, Cheers, Chris Quote
johnb80 Posted March 30, 2006 Report Posted March 30, 2006 There's definately no danger whatsoever of freezing the compressor, they run extremely hot (recall physics at school, compress a gas and it gets hot). It's very likely the evaporator would freeze with moist air going over it. regards - JB Quote
Triple Trouble Posted March 31, 2006 Report Posted March 31, 2006 Thanks and sorry, got my terminology in a mucking fuddle!!! Cheers. Chris Quote
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