GFI's can be a real PITA to trouble shoot. They are often extremely sensitive. Had the GFI in the bathroom of our Gemini trip over and over. Turned out to be a ground fault in the Kitchen outlet, on the same circuit. Had a GFI at home trip, replaced the GFI outlet and it still tripped, then after a couple of days it stayed on, and has been fine for over two months. On our previous DP, if while plugged into power in the storage garage, if the refrigerator was on, it would trip the garage GFI, if the refrigerator was off, it wouldn't. When plugged into shore power at RV parks it never tripped anything, worked fine. Never did figure that one out.
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