Rhonda, on the Happi-Jac Bed unit in our Road Warrior, the control unit is in the corner on the ceiling. The control unit is near the rear doors, in the passenger side rear corner. If one of the wires going to that unit has come loose, it will not work. It is a pain to get to it, but you will need to reach up there to make sure the wires are seated in. I was able to get mine in good and tight then after I got the bunks, I placed some duct tape around the connections to help hold in place.
So, check the wiring at the control unit.