George Kittner a forum member,stuck at a rv park in Oklahoma city,Coach is a 99 u270,he noticed when he got up the coach
was leaning to the left rear area.He started coach but gets no lights or any activity out of the HWH,he is going thru the manual
and checking fuses now,he has no forum access but has cell phone 815-227-1810,thanks to all.
Plug fell out the back of HWH panel, re-plugged and all is well. Yea!
That's what happened to us and what fixed the problem
So now the HWH system is working and can correct for a left rear corner leak!
Probably should investigate why that corner went down while the system was off.