So I came home today to find that the pool was not on. When I went out to check it I saw that the breaker had been tripped. Switched the breaker back on and turned pump back on. Made a loud humming noise and then tripped the breaker again. Had my pool service out for a repair call and they got it running again, but he did say it is making a sound like the motor is going and the spin thing at the back wouldn't go. About 15 minutes after he left he breaker tripped again. Is is normal for a motor to die after only 3 seasons? How do I stop this from happening with the new motor? Any help is much appreciated.