I have a 2002 Sundance Cameo. A couple of weeks ago my circulation pump went out I replaced with the E10. Then my GFCI would trip after several hours. Unhooked the heater and still tripped. Would run without pump connected. I got a new pump and it ran for a couple of days and tripped again. I been using tub everyday. Went a couple more days and tripped again. I just went out and unhooked heater again and tripped again. Looks like may have been when filter cycle started. I at a loss. I guess could call a service tech. It can take days for it to trip now and not sure how they will charge me for that. I wonder if I should replace the breaker I wonder if I should replace the breaker since it tripped so many times on that first pump. It is a siemens 50amp GFCI in the main breaker box.