A/C Control assy

GRANDAD LES · 4th June 2019, 18:16

So sorry, but it's me again. My A/C is now up and running -ho-ray you say, but I am left with the problem of how to switch it on. I always assumed that setting the temperature to 'LO' would activate the system, but the guy that re-gassed it say's otherwise. So the question is how do I do it, did Rover ever produce a supplement to explain fully it's use, over and above the standard non-climatic control? Please do have patient with me - I get my free T.V. licence next month!

trikey · 4th June 2019, 18:21

Set it to 'Auto' then set the temperature lower than the ambient temp

GRANDAD LES · 4th June 2019, 18:24

but how much lower?

trikey · 4th June 2019, 18:29

Quote:

Originally Posted by GRANDAD LES

but how much lower?

Depends how cold you want it to be, if its on auto, it will adjust the cabin temp automatically to whatever is set on the display.

Mike Trident · 4th June 2019, 21:25

You don't really turn it on as such. If you have it on auto, the car will work out what it needs. Mine is set at 21 Deg and I never change it.

slovcan · 4th June 2019, 22:49

Les, do you have the Automatic Temperature Control - dual zone digital display panel - or the manual system with 3 or 4 rotary knobs?

Cheers,
Glenn

GRANDAD LES · 5th June 2019, 11:04

Hi Glenn, I had faith I would get a reply from you! I have dual the dual zone digi panel fitted. Any other car I have had, even my Wifes SLK200 have an A/C on-off knob, which is why I was baffled. It all makes sence now, but thanks for your reply again.

SCP440 · 6th June 2019, 06:26

I have had a few cars with no obvious way of switching the A/C on or off, I presume they think you are going to leave it on all the time. In the summer to cool you and in the winter to keep the air dry.

I think it is Saab's that if you switched it on to Economy or what every the called it would go back to ON the next time you switched the ignition on automatically, interestingly an A/C engineer I know very well told me that cars that have the A/C on all the time by default have less trouble with there A/C than cars that have it only switched on when it goes above 25 degrees outside air temp.

SD1too · 6th June 2019, 08:54

Quote:

Originally Posted by SCP440

... interestingly an A/C engineer I know very well told me that cars that have the A/C on all the time by default have less trouble with there A/C than cars that have it only switched on when it goes above 25 degrees outside air temp.

That's certainly true Steve since it prevents the seals shrinking with consequent loss of refrigerant. As far as the 75/ZT is concerned though, it can lead to radiator fan unreliability since it's running continuously. As with everything, there's a balance to be found.

Simon

4th June 2019, 18:16	#1
GRANDAD LES Loves to post ROVER 75 TOURER CONTEMP Join Date: May 2009 Location: LINDAL-IN-FURNESS Posts: 360 Thanks: 205 Thanked 23 Times in 16 Posts	A/C Control assy So sorry, but it's me again. My A/C is now up and running -ho-ray you say, but I am left with the problem of how to switch it on. I always assumed that setting the temperature to 'LO' would activate the system, but the guy that re-gassed it say's otherwise. So the question is how do I do it, did Rover ever produce a supplement to explain fully it's use, over and above the standard non-climatic control? Please do have patient with me - I get my free T.V. licence next month!

4th June 2019, 18:21	#2
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,756 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	Set it to 'Auto' then set the temperature lower than the ambient temp __________________ Lest we forget..

4th June 2019, 21:25	#5
Mike Trident Posted a thing or two Rover 75 CDTi Saloon & Citroen C1 Join Date: Jun 2016 Location: Oakenshaw, Near Bradford Posts: 1,622 Thanks: 385 Thanked 552 Times in 328 Posts	You don't really turn it on as such. If you have it on auto, the car will work out what it needs. Mine is set at 21 Deg and I never change it. __________________ Rover 75 2.0 CDTi (131Ps) Conn SE Saloon. (Manual) 160 Remap, cruise control, electric window blind, temp gauge, Real walnut / ZT interior, FBH with GSM control. BORN Tuesday, 5th October 2004 @ 12:35:52 This vehicle was the 104,679th 75 to run off the production line, out of 112,381 This vehicle was the 3,318th 75 CDT Connoisseur SE (135) to be made out of 4,744 This vehicle was the 12,440th 75 in Starlight Silver (code: MBB) to be made out of 14,280 Starlight Silver 75s

4th June 2019, 22:49	#6
slovcan Gets stuck in 75 Tourer CDT MK2 manual in Glorious Grey Join Date: Jan 2018 Location: Slovakia Posts: 987 Thanks: 926 Thanked 346 Times in 252 Posts	Les, do you have the Automatic Temperature Control - dual zone digital display panel - or the manual system with 3 or 4 rotary knobs? Cheers, Glenn __________________ Southern Slovakia Anything can happen in Formula 1 and usually does - Murray Walker 1999 Triumph Trophy 900, Saddlesore 1600, Iron Butt Riders Association #63720 2005 Rover 75 CDT Tourer MK2

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4th June 2019, 18:24	#3
GRANDAD LES Loves to post ROVER 75 TOURER CONTEMP Join Date: May 2009 Location: LINDAL-IN-FURNESS Posts: 360 Thanks: 205 Thanked 23 Times in 16 Posts	but how much lower?

5th June 2019, 11:04	#7
GRANDAD LES Loves to post ROVER 75 TOURER CONTEMP Join Date: May 2009 Location: LINDAL-IN-FURNESS Posts: 360 Thanks: 205 Thanked 23 Times in 16 Posts	Hi Glenn, I had faith I would get a reply from you! I have dual the dual zone digi panel fitted. Any other car I have had, even my Wifes SLK200 have an A/C on-off knob, which is why I was baffled. It all makes sence now, but thanks for your reply again.

6th June 2019, 06:26	#8
SCP440 I really should get out more....... MG ZT-T 260 Join Date: Feb 2016 Location: Witney Posts: 2,504 Thanks: 6 Thanked 910 Times in 571 Posts	I have had a few cars with no obvious way of switching the A/C on or off, I presume they think you are going to leave it on all the time. In the summer to cool you and in the winter to keep the air dry. I think it is Saab's that if you switched it on to Economy or what every the called it would go back to ON the next time you switched the ignition on automatically, interestingly an A/C engineer I know very well told me that cars that have the A/C on all the time by default have less trouble with there A/C than cars that have it only switched on when it goes above 25 degrees outside air temp.