Water leaks out fill hose when pump is on


We are on our first camping adventure at Mt. Massive in our new Z3100 and when set as dry camp, the water pump comes on and water comes out of our fill hose.

Does anyone have any idea what it could be or what we are doing wrong?

Thanks in advance for you help!


Check valve on the city water inlet is stuck open. Remove the brass fitting and you should see a little mesh screen…remove that and there will be a plastic tab behind it (this is the check valve). Push this in/out a few times and try to dislodge whatever is holding it open.

BTW…Beautiful view in your photo…we will be out in that area in 2 weeks (Baby Doe campground on Turquoise Lake)

Is that a plastic check valve or brass?

I would love to know where you are boondocking there. So majestic!

Thank you so much, we tried that and it didn’t fix the problem. We ended up going to Ace and bought a plug for the hose. Brinkley customer service was great and very helpful. We will have to get it in to be fixed.

We are on BLM land, here is the pin - https://maps.app.goo.gl/xErdZ83wPvhzA9yU9

So beautiful here!