maybe you use a different term than me... is CFI the same as a GFCI outlet? are you tripping it and having to reset it?

I had a similar problem earlier this year but it was just my pump impeller would not spin and the internal protection would trip. I had to pull the motor off and I was able to "break it free" by hand and when i put it back together it has been fine ever since.

So my question would be does it sound like your pump motor is having a problem spinning up?