Okay so one night the hot tub died. No power, nothing. nobody was even in it, we were just watching the lights.

So I found the fuse on the circuit board was blown. This is on an older sundance 605. I put in a new fuse, and the thing was making weird clicking noises and sparking. Turns out it was the timer.

I took that out and took it apart and everything was "loose" in it. So I tightened it up and cleaned it and put it back together and put it back in. Timer works perfect.

However..... Now the pump is running constantly on low. The heat seems to be working as the tub is at 105, but I didn't see the heater light coming on.

Could something be stuck on the controller board?????