Xantia Air-conditioning

David W · Post by **David W** » 25 Nov 2003, 21:57

Guys,
Tend to get a specialist to look at aircon but I'm giving a '96 Xantia a look soon with u/s aircon and no heater blower. Was OK then it all stopped over a few days when the driver thinks it was on/off at random for a while.
All owner replaceable fuses have been checked.
Anyone had similar or any ideas?
Thanks,
David

blueboy2001 · Post by **blueboy2001** » 25 Nov 2003, 22:37

Aircon may well be u/s simply because the blower has failed. Check the resistor pack first - these sometimes burn out, and then the fan motor itself.

David W · Post by **David W** » 25 Nov 2003, 23:12

Yes had it been a non-aircon car the resister pack would have been my first port of call. I've a failed spare in the workshop bridged to give maximum speed so I can use it as a test substitute.
But the fact that the aircon light doesn't come on when you press the button...and the fact that the aircon compressor doesn't cut in....seemed odd.
Wonder if there is one electronic control unit somewhere that feeds both the heater fan and the aircon unit??
David

Post by **RichardW** » 25 Nov 2003, 23:29

There's certainly a low pressure cut on on the compressor clutch, so this will stop it engaging if you lose the refigerant. Not sure how that ties up with non-functioning blower as well though. Maybe the Bitron unit at fault?
Richard

rg · Post by rg » 26 Nov 2003, 00:40

DJW,
FWIW, there are some professional-sounding a/c specialists on the XM yahoo list, BTW. And tolerant of occasional Xantia posts.
Cheers
rg

alexx · Post by **alexx** » 26 Nov 2003, 15:59

In Xantia MkI, usual suspect in this case is faulty ignition switch.

David W · Post by **David W** » 27 Nov 2003, 14:31

Thanks guys, so it's just the usual Xantia blower checks then. It was just a long shot someone would say on the aircon cars there was a hidden fuse/relay to sort and that would do it without going inverted down the footwell!
Get it in two days so I'll let you know.
David

David W · Post by **David W** » 29 Nov 2003, 17:31

Had a look and found someone's been in there previously. Lots of non-Citroen wiring near the motor and signs of melting at the connector plugs. The electronic regulator pack (part of the motor on an air-con car) is u/s for certain so I'll get one of those.
But I wonder if anyone has a source of a wiring diagram for the air-con/blower system (I already have a diagram for the standard car). There are extra small wires to the blower on this one that I assume to be fed from some sort of control unit on the air-con, I would like to be sure what they should be doing.
Thanks,
David