Polaris 280 Booster Pump Trip GFCI Breaker

Hi,

I have a Polaris 280 system.  Its booster pump has started tripping a GFCI breaker after running for about 20 minutes.  The breaker won’ts reset immediately.  After waiting for about 30 minutes, I can reset the breaker, and the booster pump starts running for about 15 minutes then tripps the breaker again.  This is the only equipment on this breaker.

I appreciate your attention and any help to solve this problem.

Sincerely,

Kory