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Old 07-25-2013, 01:55 PM   #1
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Issue with fresh water tank

On my first trip with our new 2012 2650 I noticed that my fresh water tank fills slowly and overflows whenever I am hooked up to city water. My only thoughts are: a valve turned wrong, or is there a check valve leaking? Before I tried to get to it (under the bed) I thought I would ask if anyone ran into this before. Thanks.
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Old 07-25-2013, 02:12 PM   #2
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The check valve is the electric pump that pumps fresh water from the tank when not on city water. You say its a new 2012? still have warranty?
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Old 07-30-2013, 09:49 AM   #3
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It's a defective SureFlo water pump. The dealer has a whole file related to the issue. They will replace it.
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Old 07-30-2013, 10:20 AM   #4
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What steps do I take to fill the fresh tank when hooked up to city water?

I thought when hooked to city water, water just ran through the pipes (bypassing the tank).

When I fill the fresh tank, I just use the gravity fill.
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Old 07-30-2013, 04:13 PM   #5
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Originally Posted by paulmlac View Post
What steps do I take to fill the fresh tank when hooked up to city water?

I thought when hooked to city water, water just ran through the pipes (bypassing the tank).

When I fill the fresh tank, I just use the gravity fill.
City water connection does not fill water tank. Gravity fill is used to fill tank.
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Old 07-30-2013, 06:44 PM   #6
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Originally Posted by RvBill3 View Post

City water connection does not fill water tank. Gravity fill is used to fill tank.
Got it. Thanks. I was reading it as the problem is that it filled slow (rather than quicker) and overflowed (rather than shutting off). Now I understand the problem is that it filled at all. I have never used the city line but probably need to try it to ensure the pump works properly (restricts the fresh tank from filling) given that some folks are having trouble.
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Old 07-30-2013, 06:57 PM   #7
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Guess I'm confused every rv we've owned has has a fresh water fill and a city water connection that are seperate and the pump is only used when using water from the tank. So how does your tank fill from city connection?
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Old 07-30-2013, 07:05 PM   #8
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Guess I'm confused every rv we've owned has has a fresh water fill and a city water connection that are seperate and the pump is only used when using water from the tank. So how does your tank fill from city connection?
Both the pump and the city water are (necessarily) connected to the plumbing lines that go to your faucets. If the check-valve in the pump is bad, that common connection will allow water to flow backward thru the pump and into the tank. (And FYI, my RV doesn't have a gravity fill, but fills thru the city water connection after switching a valve.)
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Old 07-30-2013, 07:21 PM   #9
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Originally Posted by BarryD0706 View Post
Both the pump and the city water are (necessarily) connected to the plumbing lines that go to your faucets. If the check-valve in the pump is bad, that common connection will allow water to flow backward thru the pump and into the tank. (And FYI, my RV doesn't have a gravity fill, but fills thru the city water connection after switching a valve.)
Well so sorry I was confused.
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Old 07-30-2013, 07:34 PM   #10
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I find a picture is worth a thousand words and may prevent hard feelings when being helpful is misinterpreted as condescension.

The check valves in the system are displayed in this graphic.

The only "error" in the graphic is the one way check valve between the pump and the fresh water tank is internal to the pump.
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