I have a United Spa that has been working fine, I had it serviced when I bought this house almost a year ago. I had some work done on the pump, had a ozone generator insalled (love it) and all has been fine. I got in the other day, hit the "jets" button and lost power, tripped the breaker etc. I thought maybe it was too hot so I let it cool down awhile. Reset the breaker and when I hit the "jets" button, the breaker tripped again. Any ideas...Thanks

Is your jet pump separate from your filter/heat pump? If so, disconnect and see if hitting the button still trips the breaker. Probably a bad motor.