AC off but ON?

[Srp166]

This is not it.

You probably need to do what I said above. Select position for air first. No selection it defaults to ac on.

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[matmondro]

Ford's auto climate control essentially works in stages between fan speed and the direction you want the air. Another way to think of it is like "full auto" or "half auto" between the speed and direction.

If you start from "full auto" where auto is the only button lit up, then only adjust the fan speed, the direction is still working automatically. To override that you'll need to then manually select a direction too.

If starting from "full auto" like above, then only choose the direction you want the air, the fan speed will still adjust automatically until you manually set it yourself.

As others mentioned above, the A/C will sometimes run when the defroster is on, so if you've only adjusted the fan speed and not the direction, then the system automatically will still change direction and may sometimes trigger the A/C. If it happens again, manually cycle the A/C button on and off which should fix your problem. By doing that, you're essentially preventing the system from automatically controlling whether the A/C circuit is on or off.

 

[MakinDoForNow]

Even though the fan is the only thing on? Is that written somewhere?

I don't have manual with me. It has been discussed in several threads. It will initialize even if your fan is not on. Will turn AC on and circulate air on to dehumidify. If you have fan already on and the blow on me mode selected you may notice a more so than if it otherwise would select defrost or blow in foot mode. It will maintain humidity level below the dew point like most vehicles do.

 

[GPSMan]

I don't have manual with me. It has been discussed in several threads. It will initialize even if your fan is not on. Will turn AC on and circulate air on to dehumidify. If you have fan already on and the blow on me mode selected you may notice a more so than if it otherwise would select defrost or blow in foot mode. It will maintain humidity level below the dew point like most vehicles do.

All that is well and good. But you should be able to have it off full time.

Mine was stuck in the rut of always coming on the first few weeks... I even posted the same question and confusion here 8 months ago. Then found if you choose vent position first (I guess some are calling this "manual", but hey, I like to be in control) then make any other adjustments, it holds your preference long term.

 

[MakinDoForNow]

All that is well and good. But you should be able to have it off full time.

Mine was stuck in the rut of always coming on the first few weeks... I even posted the same question and confusion here 8 months ago. Then found if you choose vent position first (I guess some are calling this "manual", but hey, I like to be in control) then make any other adjustments, it holds your preference long term.

I suppose WWII mode should be available for those that desire it. Always fresh air vent may allow zero fan speed, I do not know. I can barely exist on fan speed 1 and much prefer speed 2 vent open is preferred but depending on atmospheric conditions closed vent is acceptable. If I am in the rear seating area of any vehicle and there is minimal or no air movement I will roll the window down though in tornadic conditions maybe only 1/16". It may be possible that vent always open position just lowers the possibility of dewpoint conditions and when just right perhaps vent will close and air will be circulated where you may not notice it to dehumidify.

 

[MAVRICK]

Mine was also doing this ... I came to the conclusion that there is a "humidity" sensor in the cabin that makes the A/C run (when the blower is on) even if the A/C button is not on (e.g. illuminated).

 

[hdave]

Yes. Yes Y'all.

To fix mine it was one of two things:

1) I cycled every single button thinking maybe one was stuck. Maybe it was, problem went away

or

2) you need to have at least one position button pressed first, either vents, floor, windshield, before pressing any other button. Maybe this solves it. I do this, problem went away.

HTH

I have been experiencing the same issue.
I thought I would have pressed some of the buttons for air direction, but I think you might be right that I have them all off so it goes everywhere.

Thanks for this, I'll keep it in mind and try it out over the next few weeks.

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