Forum Discussion

jfdavis17's avatar
jfdavis17
Explorer
Sep 28, 2014

No hot water when water pump is on.

I have a 2013 Winnebago 27rbds travel trailer, the hot water will not work while the water pump is on. If I turn on the water pump and let water pressure build in pipes and then turn it off the hot water will work until all water pressure is gone, once I turn the pump on the water will turn cold until I turn it back off at which point it will go back to hot until the pressure is gone again. The camper was brought straight from the dealership to a remote location where it is now, I have never had it hooked up to a municipal water system so I do not know how it would behave on one. Any help would be appreciated.
  • chevyman2's avatar
    chevyman2
    Explorer
    Sep 29, 2014
    There is one question left to answer. Im not familiar with the Winnebago TTs, however several Winnebago/Itasca class As have only 1 valve for the W/H bypass. If (by chance) this Winnebago TT has only one valve, the there is a check valve in the back of the W/H. (specifically the hot water outlet). That check valve is notorious for filling up with calcium and preventing hot water from flowing thru the lines, however the tank itself is filled with hot water.

    This particular case sounds more like an issue with (possibly) the pump itself. Check to see if you have a dirty vacuum screen on the inlet side of your water pump. (Big round thing between inlet line connection and pump itself). Also make sure the inlet/outlet lines are tight. Finally check the area, make sure the valve for the siphon hose (for winterize) is closed completely, and valve for siphon hose (from fresh tank) is open completely.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,188 PostsLatest Activity: Jan 19, 2025