I have a GFCI outlet coming off my breaker panel inside my house, which then runs outside to my pool timer, and then to my pump, which is a Hayward Super Pump 1HP. The timer has power, but every time the timer kicks on the pump, the GFCI in the house trips. The pump motor never even tries to come on, and there are no noises or anything. Up to this point, I never heard any humming or loud noises. This happened right after we had a few days of hard rain. I have checked the impeller and it spins freely. The pump is a few months older than 3 yrs. I had a buddy walk me through testing the pump for an internal short using a meter, and there is not one that we could tell. Just to rule out the timer, I plan to bypass it and connect pump directly to the power, but I am thinking that will likely still trip the GFCI. Beyond that, does anyone have any suggestions for further testing? I read online that it could be the capacitor, but not sure if there is a way to test this. Ideas?