Franklin spa motor model 4205007433 4hp 2speed runs fine high speed Low speed starts for 3 seconds then shuts down and cycles on and off continuously without breaker or GFI tripping. Replace solid state switch?

SOURCE: High speed spa pump shuts off

The motor may have a thermal cutoff if the motor draws too much current. Do you have a sufficient large gauge circuit supplying the motore? If not the actual voltage at the motor may drop, causing it to draw more current to make up for the loss of voltage, thereby tripping the motor's protective breaker. I assume the motor will start again after serveral minutes of cooling down.

Curtis

SOURCE: Coleman 500 series SPA 50A circuit breaker trips

bad connection follow wires from breaker to to moter theres abreak causing arc find it