A/C only blowing through defroster

[Michaelquerty]

My A/C is only blowing through my defroster, which I assume is some sort of default and whatever switch that controls the change is not working. I don't know if it vacuum or electrical or where to look. it's on my 2015 Fiesta ST, I can bring it in to ford but it would leave me without a car for a few days most likely so I was gonna check out possibilities, thanks

 

[FatGuyInALittleCar]

Find the fuse for the EATC and pull it for 30 seconds. See if a reset helps. If you turn off your AC do the other functions work as designed, or is everything stuck on defrost?

 

[InsTwin]

Pretty sure it does that when it's set to 'Auto' however if you turn on the upper and lower vents (i think on the lower left side below the temperature readout) it should blow out normally (just not set to auto).

The auto function is supposed to keep the temperature regular so maybe there's some weird logic that says the system is supposed to use the defrost vents for that?

Good luck.

 

[Michaelquerty]

For some reason, I got in my car when it was a cooler temperature and the vents worked fine. The defrost only lasted about 3-4 days and it fixed itself. I'll keep these suggestions in mind incase it does it again. Intermittent gremblins can get annoying,

Thanks for the help guys!