http://www.irv2.com/forums/f105/nati...ng-288917.html
"Mine fan has power , but the small 12 vdc motor that lifts the lid up and down wont shut off either from the unit or the bulkhead control module..!! Any ideas or is this operator error...."
Mine has done the same thing twice. Had to remove the little fuse until I could get time to mess with it. Turns out that my arm mechanism was not working. The motor will only shut off by itself when the lid gets to the end. The pressure will shut off the motor.
On mine the spindle moved out of the arm that opens the lid. Had to get up in there and and re-insert that spindle. I don't know what they are called, but it is made of spring steel and is sort of a half round thing about 3/4" long.
Look up in there and I think you will find the same thing.
The "spindle" is called a 'tension pin'