Aircon Temperature

Vanbursta · 31st March 2016, 14:02

Can someone please tell me the correct temperature with aircon on LO (maximum cooling) at the centre vents, I think mine is too high and despite a regass, it has only gone down by 2 degrees, the car had a new condenser and receiver drier a year or so ago.

chipsceola · 31st March 2016, 14:17

Don't think centre vents are controlled by ATC - this link to handbook may help you to check for yourself

Vanbursta · 31st March 2016, 14:22

I hope they are! temperature drops dramatically at vents and the vents are selected by the ATC when temp is set to LO. Oh and the air is set to recirc by it too.

Vanbursta · 31st March 2016, 23:24

Anyone? I can't believe this is an unknown!

clf · 31st March 2016, 23:46

Quote:

Originally Posted by Vanbursta

Anyone? I can't believe this is an unknown!

I cant give you figures, but I always thought the aim was around 4 degrees, at the vent.

That is what I have always observed from a fill, and on TV.

The central vent is different to the outer vents. The control knob function, (the one below the clock with the blue circle) allows you to bypass the heater(or air con) and let air from outside the car. Why, it helps to keep you from drifting off when you have the ATC set to relatively warm temperatures. That is how I understand it. I am not sure if it is set to the grey circle,that it will put out air con air (if that makes sense), but as I say, switched to blue, it will give air at roughly ambient outside temperature.

To check the temperature of your air conditioning, I think it would be better to place the probe at one of the outer vents.

genpk · 31st March 2016, 23:53

Prior to hitting the "lo" if you button the temp down it gets to about 16c.
I think it seems to go down in 2c increments .
Im guuessing LO is about 14c ?

clf · 1st April 2016, 00:07

Quote:

Originally Posted by genpk

Prior to hitting the "lo" if you button the temp down it gets to about 16c.
I think it seems to go down in 2c increments .
Im guuessing LO is about 14c ?

I seem to recall the handbook suggesting it is unregulated in both lo and hi. I cant remember what the max is, 29? If so, the temp will will just keep getting warmer than 29. Whereas set at 29, it will reach this temp, then mix cool air to maintain it. Likewise the cold. Set to lo, it will just keep pumping cold air into the car. At 16 it will mix warm air into it to maintain that figure.

Dragrad · 1st April 2016, 00:54

Thread moved to a more appropriate forum. Re-direct left in old. This may be the better forum as threads get ‘lost’ very quickly in the General Forum.

first-things-first · 1st April 2016, 07:39

As clf says, the heater bypass wheel set to the left (solid white circle) is "bypass closed" - so whatever temp you set the ATC at will come out of the central vents.

If the heater bypass wheel is set to the right (blue ring) it will give out roughly ambient external air temperature.

I thought that climate / ATC set to lowest temperature and air con will put out air temperature of around 8- 10 degrees at lowest (will check with docs I have). This may not be very low, but in summer this feels markedly cold with an ambient temperature in the 30's.

In winter, set to low with air con it may get lower as ambient temperatures are lower. Should not get too low or you risk freezing parts or ice forming.

tourer · 1st April 2016, 12:42

Well, I seem to be disagreeing with other answers, but if memory serves correctly, with the air con set to low and recirc switched on, the last time I tested the temp at the centre vents it was around 3 to 4 deg C. It took a few minutes to reach its lowest but that is what I recorded.
If I am wrong, I am wrong and apologise in advance.

31st March 2016, 14:02	#1
Vanbursta Posted a thing or two Rover 75 2.0 V6 Conn Join Date: Apr 2007 Location: Stainton Grove Posts: 1,637 Thanks: 266 Thanked 406 Times in 257 Posts	Aircon Temperature Can someone please tell me the correct temperature with aircon on LO (maximum cooling) at the centre vents, I think mine is too high and despite a regass, it has only gone down by 2 degrees, the car had a new condenser and receiver drier a year or so ago. __________________ I am NOT a number, I am 75

31st March 2016, 14:17	#2
chipsceola This is my second home Jaguar XF 3.0D Join Date: Nov 2010 Location: Southampton Posts: 4,364 Thanks: 119 Thanked 509 Times in 426 Posts	Don't think centre vents are controlled by ATC - this link to handbook may help you to check for yourself __________________ Chips

31st March 2016, 14:22	#3
Vanbursta Posted a thing or two Rover 75 2.0 V6 Conn Join Date: Apr 2007 Location: Stainton Grove Posts: 1,637 Thanks: 266 Thanked 406 Times in 257 Posts	I hope they are! temperature drops dramatically at vents and the vents are selected by the ATC when temp is set to LO. Oh and the air is set to recirc by it too. __________________ I am NOT a number, I am 75

31st March 2016, 23:24	#4
Vanbursta Posted a thing or two Rover 75 2.0 V6 Conn Join Date: Apr 2007 Location: Stainton Grove Posts: 1,637 Thanks: 266 Thanked 406 Times in 257 Posts	Anyone? I can't believe this is an unknown! __________________ I am NOT a number, I am 75

1st April 2016, 00:54	#8
Dragrad This is my second home *None DROWNED** Join Date: Aug 2007 Location: Cardigan Posts: 33,339 Thanks: 1,257 Thanked 1,664 Times in 1,081 Posts	Thread moved to a more appropriate forum. Re-direct left in old. This may be the better forum as threads get ‘lost’ very quickly in the General Forum. __________________ Andrew Ich Dien Problem solving is... lateral thinking SEARCH FIRST ...ASK LATER...

31st March 2016, 23:53	#6
genpk Posted a thing or two Rover 75 Saloon MGZT Join Date: Jul 2012 Location: Perth, AUSTRALIA Posts: 1,662 Thanks: 3 Thanked 461 Times in 299 Posts	Prior to hitting the "lo" if you button the temp down it gets to about 16c. I think it seems to go down in 2c increments . Im guuessing LO is about 14c ?

1st April 2016, 07:39	#9
first-things-first Posted a thing or two MG ZT Join Date: Jul 2014 Location: Hornchurch Posts: 1,255 Thanks: 176 Thanked 352 Times in 272 Posts	As clf says, the heater bypass wheel set to the left (solid white circle) is "bypass closed" - so whatever temp you set the ATC at will come out of the central vents. If the heater bypass wheel is set to the right (blue ring) it will give out roughly ambient external air temperature. I thought that climate / ATC set to lowest temperature and air con will put out air temperature of around 8- 10 degrees at lowest (will check with docs I have). This may not be very low, but in summer this feels markedly cold with an ambient temperature in the 30's. In winter, set to low with air con it may get lower as ambient temperatures are lower. Should not get too low or you risk freezing parts or ice forming.

1st April 2016, 12:42	#10
tourer Posted a thing or two Rover 75 Tourer CDT Auto. Join Date: Oct 2011 Location: Long Eaton Posts: 1,342 Thanks: 30 Thanked 220 Times in 160 Posts	Well, I seem to be disagreeing with other answers, but if memory serves correctly, with the air con set to low and recirc switched on, the last time I tested the temp at the centre vents it was around 3 to 4 deg C. It took a few minutes to reach its lowest but that is what I recorded. If I am wrong, I am wrong and apologise in advance.