The water hookup bay has me very confused. (And so does figuring out how to rotate an attached photo.). Which of the three inlets are which is still a mystery. The setup in the photo is the only way I could get running water in the rig and also dump the tanks. The “Normal/Winterize” selector is in the “Winterize” position but if I turn it the other way it fills the Fresh Water tank and I got no water to the house plumbing.
I just tired to backwash the Black Tank by connecting a hose to the bottom inlet, which I think is labeled to show that purpose. Opened the dump valve for the Black tank, turned on water to the hose and nothing happened. Water went somewhere, but didn’t come out anywhere.
So I tried the same setup but to the middle water inlet and got the same result, water in, nothing out.
Any suggestions and/or advice would be greatly appreciated.