Dash heater/air conditioner control switch

[Beacoal]

I have a 31J 2011 Hurricane and my dash heater that directs air to different location is stuck on defrost regardless of what setting I put it on, the fan runs fine on all speeds, any thoughts

[jacwjames]

The control relies on vacuum to work. It defaults to defrost if your vacuum isn't working. Check for loose connections etc.

[Duoglide1]

Jac is correct. Went thru that on 2 class A’s. One was a line under the dash leaking and the other one was the vacuum pump which was behind and above the front bumper Gas engines don’t need the pump but diesels don’t supply vacuum so there will be one.

[Beacoal]

Thanks for both of you reply's, I stopped at a Ford truck dealer and they had a quick look and said the newer ones don't work off of vacuum but are all electric and unfortunately the box that directs the air flow is under the dash and you need to take out dash to replace it, apparently about a days job plus the cost of the box, so expensive to say the least, I had a good look at it and they are correct, really hard to get at. A fellow that I met at a camp ground said that he heard that sometimes you can do A HARD RESET but I don't know anything about it Thanks Al