Originally Posted by pigletat100acres
Update - checked around Tampa for RV repair and no one has opening to check it out. Headed directly to campground next week so were panicking because we won't have water. Any suggestions on how to check to see what or where or why the water is leaking? Again - the fresh water tank won't fill (or VERY SLOWLY) while water is hooked up to water at RV park. Move hose to city water and turn on water pump - have water inside rv but water is pouring out of overflow valve. Looked under RV and just see where water is dripping onto the black tanks then to the floor then out the overflow valve. Any suggestions would be appreciated!
What do you mean the "overflow valve?" If you are referring to the tank overflow valve, then the tank may be full and you have a bad check valve in the water pump. If this fails, the city water will be able to flow backwards through the pump and will fill the water tank...and then begin to overflow the water tank. This is not an uncommon occurrence and sometimes dirt or other debris can clog the valve and keep it from closing under the city water pressure.
running water through the pump "may" clear the debris if that is all it is.