If you find that water is coming OUT from the City Fill or Tank Fill inlet when you have the water pump on it’s likely an issue with the backflow preventer at the inlet.

If you take the cap off of the inlet you will notice that there is a screen filter inside. Remove the screen filter and turn it around so the bump is towards the outside and not pressing against the backflow preventer and that will usually stop the leakage.

If that doesn’t stop it then have the backflow preventer checked out and/or replaced.

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