I'm sure some Sundance experts will come along, but a similar thing happened to me previously. I followed the wiring for the pump back into the controller box. I opened the controller to see the pump wiring had a connector on it. I was able to unplug pump #2 which allowed the spa to remain powered. This was winter and the other pump in my spa runs for heating and filtration. This allowed my dealer to take a couple of days to get there.