2018 Thor Aria Dash AC acting strange

[ChiefBob]

I have a new-to-me 2018 Aria 3401. The dash AC is crazy when it is set on "fresh air". Stopped or at low speeds to blows just fine. The faster I drive the less it blows until at highways there is barely any air coming out. I don't know where to start looking. Thanks

[ducksface]

Theres a temperature sensor that is bad.
Just turn it off by pushing the lit button while leaving the fan blow. It'll thaw and the start the freeze cycle again.
It's about $50 for the part to fix this.

DO NOT GO TO A FORD DEALER FOR THE FIX. IT IS NOT A FORD PART.
go to,anbindependant a.c. shop.

[ChiefBob]

Thanks. I thought about that possibility but it resumes blowing sufficient air as soon as I slow down and stops when I speed up. I don't think it can freeze and thaw that quickly.

[m1noel]

I believe it is from the pressure created at higher speeds under the "hood" in the generator compartment. The intake fresh air door closes at the pressure increases. Mine will work better on the higher fan speeds, but not the lower settings, and will work fine on recirculate.