The controller senses current. when current "Spikes" it shuts off. So if for any reason current exceeds the limit.. it shuts off. WHERE IS IT.
I was just watching a video where the owner of an RV simply folded down the control panel and there it was right behind the panel (I WISH MINE WAS LIKE THAT).. I had 3 different professional RV technicians who could not find mine.
Finally.. I found it.. I tracked it down with an electronic blood hound.
The first tech cut the motor wires so I was able to hook a wire/cable tracker transmitter to the wires (Got this puppy at Harbor freight. it is two units one is the "Transmitter" the other the detector) I turned it to TONE (The setting to track cable) and waved he magic wand (Detector) and sure enough BEEP BEEP. followed down the wire bundle till I got to a split where wires ran off in two directions.... One way.. NO BEEP. the other way BEEP BEEP. Continued to the net branch.. and so on till I got to the end of a smaller bundle and WOW. THE CONTROLLER.. Right there at the end of the beeps.
now to fix it.