Fantastic fan KAPUT need some info

On some AF campers, everything in the cabover is powered by the switch in the kitchen that allows remote powering of the lights. Seems dumb that the fan goes through that switch too, but they do.. some do anyway. Check that as well.

check cover switch

I had the same problem last year when I pulled my 5er out of storage. I removed the fuse from the fuse holder and put the same fuse back in. Everything has worked since. Sometimes, stuff just comes loose.

I bet on the cover switch sticking.

Is the cover switch sticking preventing it from operating? My fan has a fuse holder in one corner, speed control in another, fwd/rev switch in another and the last corner has the knob to raise and lower the cover.

No, its all inside.
First things first. Take the screen and trim ring off. Check for a piched or broken wire. When my roof was replaced several years ago the idiots did not connect the wires. You can check for voltage at the wire nuts. Check to bensure you can actually manually open it. Often the cover will stick to the gasket.
If you have power, and if you actually turned it on, and if the motor does not spin, and if you have tried to manually open and that works then likely the motor is dead. But Im guessing you have a loose connection or a broken wire.