Yes, you did explain what happened back in October. I think I done bin there dun that, Jerry, when the rig was new and I was getting used to all the electric valves in the water bay. The tank overflow and dump are in the same area and easy to get confused.
I'd still check into repairing the dump valve, as I advised previously. It may be a relatively easy fix. Plus, who knows when some service tech has occasion to dump your tank, hits the switch, and assumes he left the valve closed, and the pump gets inadvertantly burned up somehow. If nothing else the switch, now that the valve has been manually shut, needs to be electrically disabled or at least marked "do not use" with a sticker or tag.
Joel