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Old 02-05-2020, 12:11 PM   #1
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Fresh water tank

Our 2015 Minnie Winnie 31K fresh water tank has started to slowly fill when connected to the CITY water connection. This has not previously occurred and all water fixtures in the RV continue to function properly.

Has anyone experienced this phenomenon?

Thanks.
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Old 02-05-2020, 01:42 PM   #2
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I think it's fairly common. The fill/flow valve on the intake will likely need to be replaced.
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Old 02-05-2020, 04:04 PM   #3
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Are you using a pressure reducer?

My only other thought (guess actually) is there's probably a check valve near or as part of the water pump. Maybe it's gone bad???
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Old 02-10-2020, 09:05 AM   #4
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I ran the pump for 30 seconds; problem solved.
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Old 02-12-2020, 06:02 PM   #5
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I have had this happen also. I disconnect the hose and run the pump for a few seconds and it clears it up for some unknown reason.
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Old 02-12-2020, 06:35 PM   #6
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Quote:
Originally Posted by Jktb View Post
Our 2015 Minnie Winnie 31K fresh water tank has started to slowly fill when connected to the CITY water connection. This has not previously occurred and all water fixtures in the RV continue to function properly.

Has anyone experienced this phenomenon?

Thanks.
The problem is caused by the water pump. There is basically a one way valve in the pump that is acting up. Running the pump will shake it up let it seal like it should. The problem is that the city water flows through it to the fresh water tank and if the tanks fills which it will the water will come out of the overflow next to the fresh water fill valve.
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Old 02-12-2020, 06:38 PM   #7
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I’ve had the same problem and had Winnebago replace Fresh Water Tank/City Water Valve. Don’t waste the time and trouble, it’s not the problem as I’ve met many with same issue and had valve replaced over 7 times on one coach I was told.


After exhaustive trials I found it to be the water pump check valve leaking and how to fix it. First, have your water pump on as you turn on the city water. Must be over 40 psi for best results to close check valve. Then turn off water pump.

Not sure why, but water pump being off for some reason when city water is turned on won’t close or seal check valve on my coach. Once you have done this in this order it seems to work until you use water pump again, then it requires the same approach of sealing the check valve.

I have a 2017 Winnebago Tour 42 QD.
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Old 02-13-2020, 12:51 AM   #8
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As suggested above, it can be the check valve in the water pump or the check valve in the city water valve. I have had the issue twice since I have owned my motorhome. Both times it was the city water valve. The hard water in some areas cause the check valve to no longer function properly.
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