Join Date: Oct 2007
My Motorhome: Swift Kontiki 615
Thanked 779 Times in 695 Posts
If it continues running there are two immediate possible causes;
1. There is a leak somewhere, our dump valve for the freshwater system just failed causing the dumping of 120 litres in a couple of hours through effectively, the open valve under the middle of the MH - unseen unless you crawl under... Remedy; buy and fit a new one.
2. The pressure switch has failed and it is keeping it on. Remedy, ? Probably a new pump where the switch is located. Of course if your system is mucroswith rather than pressure operated that will not apply - if that type then one of the switches has failed in one of the taps.
Do let us know what you find.
Any typo that I make means the errorists win.
Any comments above are only MY OPINION
and should be read as that.