Does anyone know if there is a check valve between the fresh water tank and the pump? We have an issue where if we run water at a faucet reduced rate (half open) for only 10-20 seconds, then pump will come on but will not shut off unless I go back and turn the faucet on full until air sputter out and the pump cycles faster and then it will finally shut off.

If I turn a faucet on all the way for the same 10-20 seconds, it will shut off fine. The same happens with the toilet if we only flush a little water down instead of holding down to fill the tank.

My suspicion is there is a leaking intake pipe or check valve?


Anyone else have the same issue or ideas?

Our 323 is only a month old and the dealer is over 2 hours away so I am hoping I might be able to take care of this myself.