Air conditioning problem 18 off-road

I picked up an 18 off-road model that I love. The very first day after about an hour and a half, the blower on the air conditioner shut down to a trickle. I thought maybe I caused it somehow, and would figure it out later.

The next trip of the same time frame it happened again so I took it in to the dealer. They let it idle for three hours and couldn’t reproduce the problem. This weekend we went camping and it happed again.The cab can still be hot. The blower stops pumping air out. When I turn it up it sounds like the blower is working but nothing comes out. I also noticed white dust all over the inside of the cab and wasn’t sure where it came from. Then realized it comes out of the vents when it firstturn on the air.

Anyone had this problem.

 

Not to be a smartass, but do you have it set to auto? It will shut down, when temp is reached.

 

If you set the temp on 68 degrees it will cool to that and stop.