Low voltage does happen and did to us last weekend at Silver Falls State Park (Oregon). We were in the old section which is only 30 amp service. The error code gave the low voltage indication, 102 on one leg, 104 on the other. Unseasonal not weather had many using their AC. Brought it to the parks attention only to be told it was an issue with the entire loop. We changes the fridge and hot water to gas only and didn't use the AC the next two days. I was willing to risk the motors in the Two Fantastic Fans we have. Even at 6am the best we got was 110. The reason I'm posting all of this is to let everyone know these devices are important and at least give you an idea of what is going on. We left one day early, once the kids and grand kids left.