Originally Posted by jrben
Thanks Dave, I didn't think to look for a second bypass valve. I'll have to check that out. Hopefully that's all it is. I checked all the wiring while we were out and everything looks good. I didn't open the pressure relief valve though.
I went out yesterday when we got back and picked up a Y connector and another hose so I don't have to switch the hose next weekend.
I found out when I was de-winterizing. I had the relief valve open so I could verify when the hot water tank was full. I first opened the bypass at the termination center and when water didn't fill the water heater I went on a search and find mission. I first removed the bathroom drawers which turned out to be too far forward. Next came the bedroom wardrobe. Low and behold a three valve water heater bypass system that was set to winterization mode. After changing the valve positions the water was running out of the relief valve by the time I got back outside.
On my floor plan, the 37ND, there is no way someone could get to this by pass with the slide retracted. My winterization and de-winterization procedures now have the first step being "extend the bedroom slide".
Hopefully, your issue is this simple and nothing serious.