2006 Hurricane Swan water valve

[bedbug123]

When i am on city water a little is bypassing and going into my fresh water tank. I called swan and the said replace valve. I did, but a small amount still is leading into my fresh water tank.
Is there another back flow valve, other than the one on the city water on the swan valve, some place in the fresh water line?

Or what else may be causing this.

[16ACE27]

Backflow through the water pump is a common issue due to debris in the pump. Run the pump for a few minutes and see if that clears it.

[bedbug123]

run pump for about of and on for about an hour, still leaking into fresh water tank when I am on city water hook up