So, a couple of weeks ago, cold, wind and rain chased us out of Wolverine, WI and greeted our arrival in Brooklin, OH. What didn't greet us was a hot shower. Plenty of cold water, nothing out of any hot side faucet.
I suspected a failed check valve. We carry all of the WIND schematic, drawings, etc. Also all of the tech manuals for all of our pieces parts. (Recommend everyone download and carry theirs, too.) The plumbing diagrams showed a check valve on the cold water inlet and one on the hot water outlet. Neither accessable w\o sliding the heater out.
Searched on line for a replacement - turns out they are not as common as you might think. Closest one we found to our trip track was in Marion, AR.
We changed our trip track (good to be retired) and layed up in Naval Support Activity Millington, TN - just across the river from Marion for voyage repairs.
Could not find the outlet check valve. Broke down and called a mobile repair guy. He couldn't find it either. Called Winnebago. No help. They told us what the drawing showed.
We followed the hot side line into the water bay. Getting the protective plate off is an engineering feat in itself. BUT, there the check valve was -and failed. Five minutes to replace, life improved.
The moral to this story is that I believe you should down load all your diagrams and schematics. I recommend you turn to them for guidance. But for me, once again, they have proved to be like that whacked out stop sign on Camino del Oeste -- more of a suggestion than a rule.
Fair Winds and Following Seas