Does anyone own a 2011 Heartland Bighorn 5th wheel RV that could take pictures of the plumbing on the back of the UDC (where the winterizing and bypass valves) connections? I would greatly appreciate it, Heartland Owners does not have a diagram.
Thanks Dave,
I had to replace the winterize and bypass valves because they were stuck, and apparently I mixed some hoses up because now water comes out the antifreeze intake hose when it should be sucking it in.
Could be the check valve on back side of water heater. Had mine go a cple years ago as I couldn't get AF to go in. Had to bypass water heater itself;f w/ a kit then worry about it in spring as I was in a hurry to get it done to take to storage place as they needed me to go in 1st.
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