Water is coming out of my fresh water fill
Left yesterday with an empty fresh water tank and when I arrived at the campsite hooked up to city water. 24 hours later water started to leak out of my fresh water fill. Can someone tell me what is wrong that water from the city water inlet is entering my fresh water tank? Is there a check valve someplace that may have broken? Thanks for any help.
2013 Surveyor SVF 293
2013 Ford SD F250 4x4 SC; 6.2 EFI V8
Reese 18K Elite w/slider - Ada, Michigan