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Old 09-26-2021, 09:28 AM   #1
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Problem with overflowing fresh water

Currently have 2021 Cherokee Grey Wolf 26DBH. When I arrive at my destination I go to the fill station to fill the fresh water tank. After about 15 minutes I will start to get water coming from the hose underneath so I assume the tank is full. This hose leaks the whole time I preceding to my camp site. When I get to the site itís still leaking and when I go to the control panel to check the quantity of water itís says Iím a 1/3 down already. Why is this happening?
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Old 09-26-2021, 09:32 AM   #2
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Is it your fresh water tank drain?
Is there a small valve on the end? If so try to close it.
Just a shot in the dark...a pic might help.
BTW: Welcome to the forum from Upstate NY.
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Old 09-26-2021, 10:24 AM   #3
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Old 09-26-2021, 11:06 AM   #4
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your fresh water over fill is creating a siphon and draining out the tank . you can add a valve that you will want to keep open when filling or watch to fill and stop just as it starts to dribble out . i've had this happen a couple times and just blew into the over flow line and stopped the siphon .
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Old 09-27-2021, 04:49 AM   #5
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Mr. M. is spot on. Siphon effect. Put a plug or a valve on the overflow. Just remember to open it when filling or at your destination!.
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Old 09-28-2021, 09:30 AM   #6
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sometimes the overfill tube is too low in the tank and will siphon out until it reaches the end of the tube.
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Old 09-28-2021, 04:20 PM   #7
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Siphon issue

I poked a hole in the top of the overflow tube to allow air into the tube. It no longer siphons when overflow level has begun.
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