Hi, my aircon has decided to be permanently on whether the switch on the dash is or not! This also means that the 2 fans are on slow speed all of the time! Apart from being cold I am worried about the constant wear on all of the pump/fans etc. and my reduced fuel economy. I took the fuse out in the dash to stop it, but then realised this also stops the blower working... DOH! What's the most likely culprit??? relay? switch? Where is the relay?
Any urgent help appreciated in this already cold weather!
ps. It's a 2001 Xantia HDi
Chris.
Xantia Aircon stuck on!!! HELP!!! BBBBRRRRRRRRRR... COLD!
Moderator: RichardW
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Xantia Aircon stuck on!!! HELP!!! BBBBRRRRRRRRRR... COLD!
2001 Xantia HDI 110, 50,000 miles
Near Beverley, E.Yorks.
Near Beverley, E.Yorks.
The aircon switch on the dash may cause that.
Try prising it out to pull the connector off.
Taking out the connector to the compressor clutch will stop the compressor from working, but that won't stop the cooling fans from spinning, because they are controlled by the Bitron fan control box which gets its input from the dash switch.
Try prising it out to pull the connector off.
Taking out the connector to the compressor clutch will stop the compressor from working, but that won't stop the cooling fans from spinning, because they are controlled by the Bitron fan control box which gets its input from the dash switch.
2002 C5 2.0i AL4 230,000 km 76372389
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- Joined: 21 Apr 2005, 22:59
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There's no relay to operate the air conditioning that I'm aware of.
It does have the solenoid to engage the clutch on the compressor.
There are relays to operate the cooling fans, but they're working normally since the low speed is on.
The Bitron is inside the fuse box under the bonnet, and the usual fault is oxidised terminals that need a good scrape.
I've got posts on the subject, but can't find them now.
Here is the map for the fans:
http://www.frenchcarforum.co.uk/forum/v ... hp?t=17012
And here is the air conditioning forum:
http://www.frenchcarforum.co.uk/forum/v ... 16943bcf59
It does have the solenoid to engage the clutch on the compressor.
There are relays to operate the cooling fans, but they're working normally since the low speed is on.
The Bitron is inside the fuse box under the bonnet, and the usual fault is oxidised terminals that need a good scrape.
I've got posts on the subject, but can't find them now.
Here is the map for the fans:
http://www.frenchcarforum.co.uk/forum/v ... hp?t=17012
And here is the air conditioning forum:
http://www.frenchcarforum.co.uk/forum/v ... 16943bcf59
2002 C5 2.0i AL4 230,000 km 76372389
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- Posts: 41
- Joined: 21 Apr 2005, 22:59
- Location: United Kingdom
- My Cars:
WHich 'direction' have you got the blowers set to? I know that on my Xsara if you set it to the windscreen it automatically uses aircon as this is the best way to demist. If you use a different setting it wont switch the A/C on unless you press the A/c button.
99 Xsara SX HDi 105k with PSi power box- smokier but well worth the wonga!
Actually I think there must be a relay involved in the later models - because on my 1997 there is about a 3 second delay from pushing the button until the "click" of the clutch solenoid.Clogzz wrote:There's no relay to operate the air conditioning that I'm aware of.
It does have the solenoid to engage the clutch on the compressor.
There are relays to operate the cooling fans, but they're working normally since the low speed is on.
On the other hand my mums 1993, and Dad's 1994 both click immediately with the button.
I'm guessing they added a delay to prevent the compressor from loading the engine during starting.
Now, if only I could find where it is, as it may be the reason why my compressor clutch sometimes wont turn on...
Regards,
Simon
Simon
1997 Xantia S1 3.0 V6 Auto Exclusive in Silex Grey
2016 Nissan Leaf Tekna 30kWh in White
2011 Peugeot Ion Full Electric in Silver
1977 G Special 1129cc LHD
1978 CX 2400
1997 Xantia S1 2.0i Auto VSX
1998 Xantia S2 3.0 V6 Auto Exclusive
1997 Xantia S1 3.0 V6 Auto Exclusive in Silex Grey
2016 Nissan Leaf Tekna 30kWh in White
2011 Peugeot Ion Full Electric in Silver
1977 G Special 1129cc LHD
1978 CX 2400
1997 Xantia S1 2.0i Auto VSX
1998 Xantia S2 3.0 V6 Auto Exclusive
Looks likely, there's definitely something, and I think that the Haynes book says that it's controlled by the ECU.Mandrake wrote: Actually I think there must be a relay involved in the later models - because on my 1997 there is about a 3 second delay from pushing the button until the "click" of the clutch solenoid.
My 1995 Xantia sometimes takes about 5 seconds to engage the clutch.
When you set the fan speed control to 'off', the air con won't work either, so that one knows about it too.
2002 C5 2.0i AL4 230,000 km 76372389