How does the climate control system work? Is there rhyme or reason, or is it random?
#21
![Default](/forum/images/icons/icon1.gif)
I don't believe that is correct. The vent raises and closes when the system detects it is needed - even with AC enabled.
If the cabin is hot the vent raises to add extra cooling then lowers once the temp has dropped and it needs to maintain a constant temp.
In the winter the vent remains closed even though the AC is on (in auto mode).
If the cabin is hot the vent raises to add extra cooling then lowers once the temp has dropped and it needs to maintain a constant temp.
In the winter the vent remains closed even though the AC is on (in auto mode).
Lawrence
#22
![Default](/forum/images/icons/icon1.gif)
I don't believe that is correct. The vent raises and closes when the system detects it is needed - even with AC enabled.
If the cabin is hot the vent raises to add extra cooling then lowers once the temp has dropped and it needs to maintain a constant temp.
In the winter the vent remains closed even though the AC is on (in auto mode).
If the cabin is hot the vent raises to add extra cooling then lowers once the temp has dropped and it needs to maintain a constant temp.
In the winter the vent remains closed even though the AC is on (in auto mode).
I think that is just a matter of interpretation. With A/C enabled it will raise the center went when cooling is neccessary, and it will close/stay closed when cooling is not neccessary.
So some will say the A/C is off (inactive) when cooling is not neccessary, and I think that is just a matter of the definition of what is the A/C function and what is "standard ventilation system" without the A/C cooling function activated.
But what you say about the function is (allmost) correct, as it will also raise the center vent again if some additional cooling is neccessary to maintain a constant temp
![Wink](https://www.jaguarforums.com/forum/images/smilies/wink.gif)
Last edited by Arne; 08-09-2016 at 06:29 AM.
#23
![Default](/forum/images/icons/icon1.gif)
Guys, the correct way to vacate the hot air from the car is to put the top down. It's amazing how fast the 150 degree air vanishes. On really nasty days and stuck in traffic, I might turn on the AC with the top down. For that to work I use manual mode so that the fan isn't on high all of the time. All I need is the occasional cool breeze and a low fan setting does that.
With the top up, Auto mode works perfectly. Set it and forget it.
With the top up, Auto mode works perfectly. Set it and forget it.
The following 2 users liked this post by Dogbreath!:
SinF (08-09-2016),
Uncle Fishbits (08-09-2016)
#24
![Default](/forum/images/icons/icon1.gif)
I don't believe that is correct. The vent raises and closes when the system detects it is needed - even with AC enabled.
If the cabin is hot the vent raises to add extra cooling then lowers once the temp has dropped and it needs to maintain a constant temp.
In the winter the vent remains closed even though the AC is on (in auto mode).
If the cabin is hot the vent raises to add extra cooling then lowers once the temp has dropped and it needs to maintain a constant temp.
In the winter the vent remains closed even though the AC is on (in auto mode).
what if the car is in Brazil?
Jeez
#25
![Default](/forum/images/icons/icon1.gif)
It is entirely logical and reproducible once you understand how it reacts to different inputs. That bit is not immediately obvious though. ![Smile](https://www.jaguarforums.com/forum/images/smilies/smile.gif)
From TOPIx:
When the climate control system is operating, the center face vents open when:
• Face distribution is selected
• Face and feet distribution is selected and comfort algorithms in the ATCM determine that face air is required
• AUTO mode is selected and comfort algorithms in the ATCM determine that face air is required.
The center face vents close when:
• Demist, foot/demist or foot distribution is selected
• AUTO mode is selected and comfort algorithms in the ATCM determine that face air is not required.
My notes - ATCM is the Automatic Temperature Control Module. It uses inputs from the user/touch screen, ambient air sensor, sunload sensor and polution sensors to control the temperature, position and volume of air required. You can force the vents to stay open using the touch screen. Demist will automatically turn on the AC to dry the air (you don't want to blow damp air onto the glass, that defeats the purpose!)
I've attached the "Climate Control - Control Components" pages from TOPIx to this post as it explains how the system determines the outputs towards the end.
![Smile](https://www.jaguarforums.com/forum/images/smilies/smile.gif)
From TOPIx:
When the climate control system is operating, the center face vents open when:
• Face distribution is selected
• Face and feet distribution is selected and comfort algorithms in the ATCM determine that face air is required
• AUTO mode is selected and comfort algorithms in the ATCM determine that face air is required.
The center face vents close when:
• Demist, foot/demist or foot distribution is selected
• AUTO mode is selected and comfort algorithms in the ATCM determine that face air is not required.
My notes - ATCM is the Automatic Temperature Control Module. It uses inputs from the user/touch screen, ambient air sensor, sunload sensor and polution sensors to control the temperature, position and volume of air required. You can force the vents to stay open using the touch screen. Demist will automatically turn on the AC to dry the air (you don't want to blow damp air onto the glass, that defeats the purpose!)
I've attached the "Climate Control - Control Components" pages from TOPIx to this post as it explains how the system determines the outputs towards the end.
The following users liked this post:
Uncle Fishbits (08-09-2016)
#26
![Default](/forum/images/icons/icon1.gif)
It is entirely logical and reproducible once you understand how it reacts to different inputs. That bit is not immediately obvious though. ![Smile](https://www.jaguarforums.com/forum/images/smilies/smile.gif)
From TOPIx:
When the climate control system is operating, the center face vents open when:
• Face distribution is selected
• Face and feet distribution is selected and comfort algorithms in the ATCM determine that face air is required
• AUTO mode is selected and comfort algorithms in the ATCM determine that face air is required.
The center face vents close when:
• Demist, foot/demist or foot distribution is selected
• AUTO mode is selected and comfort algorithms in the ATCM determine that face air is not required.
My notes - ATCM is the Automatic Temperature Control Module. It uses inputs from the user/touch screen, ambient air sensor, sunload sensor and polution sensors to control the temperature, position and volume of air required. You can force the vents to stay open using the touch screen. Demist will automatically turn on the AC to dry the air (you don't want to blow damp air onto the glass, that defeats the purpose!)
I've attached the "Climate Control - Control Components" pages from TOPIx to this post as it explains how the system determines the outputs towards the end.
![Smile](https://www.jaguarforums.com/forum/images/smilies/smile.gif)
From TOPIx:
When the climate control system is operating, the center face vents open when:
• Face distribution is selected
• Face and feet distribution is selected and comfort algorithms in the ATCM determine that face air is required
• AUTO mode is selected and comfort algorithms in the ATCM determine that face air is required.
The center face vents close when:
• Demist, foot/demist or foot distribution is selected
• AUTO mode is selected and comfort algorithms in the ATCM determine that face air is not required.
My notes - ATCM is the Automatic Temperature Control Module. It uses inputs from the user/touch screen, ambient air sensor, sunload sensor and polution sensors to control the temperature, position and volume of air required. You can force the vents to stay open using the touch screen. Demist will automatically turn on the AC to dry the air (you don't want to blow damp air onto the glass, that defeats the purpose!)
I've attached the "Climate Control - Control Components" pages from TOPIx to this post as it explains how the system determines the outputs towards the end.
Retarded.
Last edited by polarisnavyxj; 08-09-2016 at 09:24 AM.
The following users liked this post:
Uncle Fishbits (08-09-2016)
#27
![Default](/forum/images/icons/icon1.gif)
When I got into the car this morning the vent raised immediately and fans blasted cold air through the cabin trying to get the car down to the temp I had selected - it was on auto.
#28
![Default](/forum/images/icons/icon1.gif)
I think that is just a matter of interpretation. With A/C enabled it will raise the center went when cooling is neccessary, and it will close/stay closed when cooling is not neccessary.
So some will say the A/C is off (inactive) when cooling is not neccessary, and I think that is just a matter of the definition of what is the A/C function and what is "standard ventilation system" without the A/C cooling function activated.
But what you say about the function is (allmost) correct, as it will also raise the center vent again if some additional cooling is neccessary to maintain a constant temp![Wink](https://www.jaguarforums.com/forum/images/smilies/wink.gif)
So some will say the A/C is off (inactive) when cooling is not neccessary, and I think that is just a matter of the definition of what is the A/C function and what is "standard ventilation system" without the A/C cooling function activated.
But what you say about the function is (allmost) correct, as it will also raise the center vent again if some additional cooling is neccessary to maintain a constant temp
![Wink](https://www.jaguarforums.com/forum/images/smilies/wink.gif)
#29
![Default](/forum/images/icons/icon1.gif)
I don't believe that is correct. The vent raises and closes when the system detects it is needed - even with AC enabled.
If the cabin is hot the vent raises to add extra cooling then lowers once the temp has dropped and it needs to maintain a constant temp.
In the winter the vent remains closed even though the AC is on (in auto mode).
If the cabin is hot the vent raises to add extra cooling then lowers once the temp has dropped and it needs to maintain a constant temp.
In the winter the vent remains closed even though the AC is on (in auto mode).
#30
![Default](/forum/images/icons/icon1.gif)
Well thanks for this Dave. I guess it's the "if ATCM determines..." that causes the system to operate with a mind of it's own. I guess, in fact, that if it is "determining" it literally has a mind. I never thought to go to the touch screen to get the vents to raise and lower manually. I'll try that. But I tell you - this is an engineering snafu. You've got A/C Auto defrost toggles and dials all across the console. It is ridiculous to also have a whole different set of controls in the touch window. Is there another car on earth with two different independent sets of climate controls, one analog, one digital?
Retarded.
Retarded.
I've mainly used that touchscreen for controlling the flow and vents. I note that both face and feet on high cooling will produce a weird "struggling" vent sound likely due to a flap or some other technical word that I do not know.
#31
![Default](/forum/images/icons/icon1.gif)
It is entirely logical and reproducible once you understand how it reacts to different inputs. That bit is not immediately obvious though. ![Smile](https://www.jaguarforums.com/forum/images/smilies/smile.gif)
From TOPIx:
When the climate control system is operating, the center face vents open when:
• Face distribution is selected
• Face and feet distribution is selected and comfort algorithms in the ATCM determine that face air is required
• AUTO mode is selected and comfort algorithms in the ATCM determine that face air is required.
The center face vents close when:
• Demist, foot/demist or foot distribution is selected
• AUTO mode is selected and comfort algorithms in the ATCM determine that face air is not required.
![Smile](https://www.jaguarforums.com/forum/images/smilies/smile.gif)
From TOPIx:
When the climate control system is operating, the center face vents open when:
• Face distribution is selected
• Face and feet distribution is selected and comfort algorithms in the ATCM determine that face air is required
• AUTO mode is selected and comfort algorithms in the ATCM determine that face air is required.
The center face vents close when:
• Demist, foot/demist or foot distribution is selected
• AUTO mode is selected and comfort algorithms in the ATCM determine that face air is not required.
![](https://cimg4.ibsrv.net/gimg/www.jaguarforums.com-vbulletin/764x548/hvac_50252a64bbfd499bbceeb807c28b39ae9fa0f9c5.png)
#32
#33
#34
![Default](/forum/images/icons/icon1.gif)
You can lower windows down while outside by holding down unlock button.
I also put sun screen, had to pay Jag for OEM one due to weird shape. Plus white interior doesn't heat up that much.
That is, I, for one, have zero complaints about F-type heating&cooling.
#35
#36
#37
![Default](/forum/images/icons/icon1.gif)
dedicated to trying to explain when the center vents deploy is sheer ridiculousness.
No one should have to refer to RTFM to work the temperature.
We own a F-Type. We are all car guys. Were not soccer moms in an Astrovan. We have owned and operated several cars in the past.
We should not need to tutor each other on how to use an air conditioner.
Either the point is that ATCM is some new high tech 2016 technology that we all need to get used to because it is the cutting edge of how CC systems will work moving forward or this entire system is a haphazard mess.
It has to be one or the other. I'm willing to relearn a new system that is outside of what is logical but please tell me what is better about it and why it is different rather than what the manual says it does.
Call me "old school", but in my opinion, A CC system works like this...You set the desired temperature, the car determines the ambient temperature, then the car turns on the system to reach the target, Simple. There should also be a Max switch to rapidly override the thermostat and max cool (or heat) the car in the case of extreme conditions. Thats it, thats all.
We have an "auto" toggle. I'm assuming this sets CC on and off. I get that.
We have an A/C toggle. Not sure what this is for but lets assume the car is say a degree hotter than you want and you want to cool off with fan only without A/C. OK i guess theres that use.
We have a vent that goes up and down, that isn't really tied into the desired temp.
And on top of all this we have digital controls in the touch screen that either override or work in conjunction with the analog toggles and dials.
Really?
No one should have to refer to RTFM to work the temperature.
We own a F-Type. We are all car guys. Were not soccer moms in an Astrovan. We have owned and operated several cars in the past.
We should not need to tutor each other on how to use an air conditioner.
Either the point is that ATCM is some new high tech 2016 technology that we all need to get used to because it is the cutting edge of how CC systems will work moving forward or this entire system is a haphazard mess.
It has to be one or the other. I'm willing to relearn a new system that is outside of what is logical but please tell me what is better about it and why it is different rather than what the manual says it does.
Call me "old school", but in my opinion, A CC system works like this...You set the desired temperature, the car determines the ambient temperature, then the car turns on the system to reach the target, Simple. There should also be a Max switch to rapidly override the thermostat and max cool (or heat) the car in the case of extreme conditions. Thats it, thats all.
We have an "auto" toggle. I'm assuming this sets CC on and off. I get that.
We have an A/C toggle. Not sure what this is for but lets assume the car is say a degree hotter than you want and you want to cool off with fan only without A/C. OK i guess theres that use.
We have a vent that goes up and down, that isn't really tied into the desired temp.
And on top of all this we have digital controls in the touch screen that either override or work in conjunction with the analog toggles and dials.
Really?
Last edited by polarisnavyxj; 08-09-2016 at 01:26 PM.
#38
![Default](/forum/images/icons/icon1.gif)
Call me "old school", but in my opinion, A CC system works like this...You set the desired temperature, the car determines the ambient temperature, then the car turns on the system to reach the target, Simple. There should also be a Max switch to rapidly override the thermostat and max cool (or heat) the car in the case of extreme conditions. Thats it, thats all.
All i ever need to do for perfect interior temp:
- Press the center physical knob to turn HVAC on or off (generally top down vs up)
- Turn the left knob ever so slightly to set the desired temp somewhere between 68-71 as needed
Not sure what is up with yours but this car has had the most hands off approach to HVAC I've ever seen. I've only seen the climate touch screen a couple times and never found any reason to adjust the vent settings there.
#39
![Default](/forum/images/icons/icon1.gif)
Hmm, mine works even better: The "max" mode is automatic when the disparity between requested and ambient temp is high.
All i ever need to do for perfect interior temp:
- Press the center physical knob to turn HVAC on or off (generally top down vs up)
- Turn the left knob ever so slightly to set the desired temp somewhere between 68-71 as needed
Not sure what is up with yours but this car has had the most hands off approach to HVAC I've ever seen. I've only seen the climate touch screen a couple times and never found any reason to adjust the vent settings there.
All i ever need to do for perfect interior temp:
- Press the center physical knob to turn HVAC on or off (generally top down vs up)
- Turn the left knob ever so slightly to set the desired temp somewhere between 68-71 as needed
Not sure what is up with yours but this car has had the most hands off approach to HVAC I've ever seen. I've only seen the climate touch screen a couple times and never found any reason to adjust the vent settings there.
Last edited by polarisnavyxj; 08-09-2016 at 01:52 PM.
#40
![Default](/forum/images/icons/icon1.gif)
Perhaps there is something wrong with mine. When I first start my car in the mid day heat, with A/C and AUTO on from the previous day, the car doesn't blow hard cold like its rapidly trying to cool off the cabin. The A/C trickles in as if its in a comfort mode and the vent console stays down.