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Water Back-flow Into The Fresh Water Tank

dmjaway
Explorer
Explorer
I have a 2017 Forest River Sunseeker 3050S Class 'C' Motor home and am experiencing a problem where, at certain times, the water pump is allowing RV park water to flow back through the WP's check-valve into the fresh water tank.

I have changed out the water pump but still have the same problem.

Is there anyone experiencing this problem?
Dave & Marge Jones
15 REPLIES 15

Old-Biscuit
Explorer III
Explorer III
How do you normally fill fresh water tank?
Gravity fill port where you stick a hose in
OR
Via swapping a valve/switch to "FILL"

"FILL" valve...could be leaking thru


Water pump has an internal 'check valve' (diaphragm) that can not fully close due to construction debris or even scaling from water

When fresh water tank fills......turn off city water suppy...tuen pump ON and use the water in fresh water tank.
Using the pump water flows the correct direction thru pump and can clear up/clean the 'check valve' so it closes.


Fact is....only use the pump/fresh water tank---just fill fresh water tank as needed.
Is it time for your medication or mine?


2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
US NAVY------USS Decatur DDG31