Advise on Hot tub circulation pump

A few weeks ago i was using my spa and running the pump 1 jets (2 speed). i cycled the pump off and back on. I heard a abnormal noise so i shut off the pump off the circulation side was still working. I turn the jet back on and the breaker popped and wont reset. I disconnected the pump from the controler and cycled the breaker. No fault. I had the pump tested . it suposably it tested good. what could be wrong? What should i test?