S40 V40: - Climate Control

brent · Jun 22nd, 2016, 09:12

So, it is now some time since I retrofitted the automatic climate control with the invaluable help of Gatos, and I have started wondering, when it is all set to automatic, should the AC turn on and off automatically? I have noticed I need to press the button to activate it and it stays on (or off) no matter what temperature I have the car set to.

cheshired5 · Jun 22nd, 2016, 10:43

What do you mean by it stays on or off?

Do you mean the light on the panel or the compressor clutch is permanently engaged/disengaged?

brent · Jun 22nd, 2016, 10:51

The little light on the AC switch on the dashboard, If I turn it on it stays green no matter what temperature I set the climate to, if it is turned off it stays Red no matter what temperature. I'd just wondered if the Automatic Climate was meant to be able to control that by itself.

gatos · Jun 22nd, 2016, 11:17

That is right Brent. You need to press the AC button to turn it On/Off. It's not the most sophisticated system really....

cheshired5 · Jun 22nd, 2016, 11:36

Quote:

Originally Posted by brent

The little light on the AC switch on the dashboard, If I turn it on it stays green no matter what temperature I set the climate to, if it is turned off it stays Red no matter what temperature. I'd just wondered if the Automatic Climate was meant to be able to control that by itself.

Just because the AC light is on, it doesn't mean that the AC is on.
It means that if the climate system needs to engage the AC compressor to maintain your selected temperature, it will do and it will then cycle the compressor in and out as required.
If the AC light is off, the compressor won't cycle at all, even if it's actually needed to reach or maintain the selected temperature.
With climate control, leave it on auto and leave the system to do whatever it wants.

brent · Jun 22nd, 2016, 12:02

Quote:

Originally Posted by gatos

That is right Brent. You need to press the AC button to turn it On/Off. It's not the most sophisticated system really....

Can you tell I'm running out of things to retrofit

brent · Jun 22nd, 2016, 12:03

Quote:

Originally Posted by cheshired5

Just because the AC light is on, it doesn't mean that the AC is on.
It means that if the climate system needs to engage the AC compressor to maintain your selected temperature, it will do and it will then cycle the compressor in and out as required.
If the AC light is off, the compressor won't cycle at all, even if it's actually needed to reach or maintain the selected temperature.
With climate control, leave it on auto and leave the system to do whatever it wants.

goodo

Thanks!

Antz · Jun 22nd, 2016, 12:18

A/C? Whats that!? Ive only ever owned one car where it worked then the radiator fell apart so I just removed it all.

My A/C is to wind all the windows down, sunroof open and drive quicker.

brent · Jun 22nd, 2016, 13:08

Quote:

Originally Posted by Antz

A/C? Whats that!? Ive only ever owned one car where it worked then the radiator fell apart so I just removed it all.

My A/C is to wind all the windows down, sunroof open and drive quicker.

I have to admit that being an Aussie I don't really see much need for it in the UK

druid · Jun 22nd, 2016, 14:31

If you set it to demist - auto or fan on - the aircon will come on!

Jun 22nd, 2016, 09:12	#1
brent Member Last Online: May 17th, 2022 12:07 Join Date: Mar 2013 Location: Middlesex	Climate Control So, it is now some time since I retrofitted the automatic climate control with the invaluable help of Gatos, and I have started wondering, when it is all set to automatic, should the AC turn on and off automatically? I have noticed I need to press the button to activate it and it stays on (or off) no matter what temperature I have the car set to. __________________ ----------- 2001MY Volvo V40 1.9D Peacock Green ----------- 2003MY Jaguar S-Type SE 2.5, Zircon Blue / 1966MY Jaguar 3.8S, Golden Sand

Jun 22nd, 2016, 10:43	#2
cheshired5 Premier Member Last Online: Dec 26th, 2021 13:42 Join Date: Dec 2013 Location: Crewe	What do you mean by it stays on or off? Do you mean the light on the panel or the compressor clutch is permanently engaged/disengaged? __________________ 2002 S60 SE D5 Manual 209000 miles

Jun 22nd, 2016, 10:51	#3
brent Member Last Online: May 17th, 2022 12:07 Join Date: Mar 2013 Location: Middlesex	The little light on the AC switch on the dashboard, If I turn it on it stays green no matter what temperature I set the climate to, if it is turned off it stays Red no matter what temperature. I'd just wondered if the Automatic Climate was meant to be able to control that by itself. __________________ ----------- 2001MY Volvo V40 1.9D Peacock Green ----------- 2003MY Jaguar S-Type SE 2.5, Zircon Blue / 1966MY Jaguar 3.8S, Golden Sand

Jun 22nd, 2016, 11:17	#4
gatos Premier Member Last Online: Nov 15th, 2022 21:34 Join Date: Apr 2010 Location: London / Essex	That is right Brent. You need to press the AC button to turn it On/Off. It's not the most sophisticated system really.... __________________ Current car: 2002 S40 1.9D, 1992 240SE Nullius in Verba

Jun 22nd, 2016, 12:18	#8
Antz No I'm not the redhead Last Online: Nov 25th, 2022 09:49 Join Date: Jun 2009 Location: North Yorkshire Coast	A/C? Whats that!? Ive only ever owned one car where it worked then the radiator fell apart so I just removed it all. My A/C is to wind all the windows down, sunroof open and drive quicker. __________________ 1988 Volvo 240 GLT T5 Swap a T5 motor into your RWD Volvo:The Guide

Jun 22nd, 2016, 14:31	#10
druid V40 Owner Last Online: Dec 13th, 2020 01:28 Join Date: Aug 2006 Location: Tonyrefail, Souh Wales. View Photos By: druid	If you set it to demist - auto or fan on - the aircon will come on! __________________ *An MS Warior living one day at a time* "Neville" 207,000 so far. Water use 0 - oil negligible....

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