Five year old Century Centurion. The condition results in either tripping the circuit breakers or tripping the internal thermal switch which automatically resets after a cool off period (it makes the click noise). I have verfied that the capacitor is good. I removed the motor shaft end cover to confirm the motor turns freely and is not seized.
Here's the kicker....this is a repeat problem. The same thing occured last season at this same time of year. Water temp is ~ 45 degrees. Ambient temps are low 30s at night and low 60s during the day. When this occured last season, I decided to leave the system off and deal with repairs when the swim season was closer. When the weather warmed in early spring, the pump started and operated through the warm season with no indication of problems. Now, back in winter, I'm experiencing the same problem. I can only conclude the problem is associated with the cold.
Has anyone else experienced this? Is there an internal switch or other component that might be sensitive to the cold that I can access to clean or otherwise replace? Also, can the motor be removed from the pump assembly without removiing the entire motor/pump assembly from the pool system?
Thanks in advance for any help or input.