Have you checked the pump seal?? If the pump seal is out it will cause the pump not to prime or pull a small prime... I am with Scott have your PB pull of the ball valves and replace them with Jandy valves..
PoolGuyNJ said:1) What's the filter pressure? Not that back pressure will heat the motor much.
2) I am not convinced it's wired right but it may be a Jandy pump with a defective motor. As Forest Gump said when jogging, It Happens. What? Bleep?, Sometimes!
Can you post a pic of the timer's wiring and the wiring connection in the pump? Relatively close would help.
Scott
PoolGuyNJ said:Boo, Hisss. Use a 3/4 HP Impeller.
Scott