Well I don't know but I replaced mine today and it works fine now. I removed the old one and it is a 50amp and replaced it with a 40amp so I think the 50 was weak causing it to kick out. I think I will go get another 50amp just for safety sake.
2004 Sierra 330RL 5th Wheel
2002 Silverado 2500 Duramax 4x4
States I have camped in