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Old 02-08-2020, 04:45 AM   #1
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Plumbing issue

My freshwater tank is being filled when the valve is in the city water position.
2008 National Seabreeze. Is there a diagram somewhere?
I know I also have some leaks behind the panel.
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Old 02-08-2020, 05:15 AM   #2
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There are two ways your water tank can be filling when connected to a city water supply:

1. The diverter valve from your "city intake or water tank fill" valve is not closed all the if in the "city water" position or the diverter valve is not closing at all even though the lever is in the closed position....time to replace the diverter valve.

I would first exercise it back and forth when connected to a water source and see if you can hear it diverting water to your tank when you turn it accordingly. In some cases, the lever turns, but it is not doing anything. So listen closing to water the water is doing.

2. The check valve inside the water pump has debris in it or is bad and allowing water to back flush into your water tank. Run your water pump for about 15 minutes and see if it clears up the problem. If not, and you determine your diverter valve is good.....time for a new water pump.

Now, to cure both issues, but it will still leave you with a BAD diverter valve or water pump check valve.......is to install an inline check valve between your water tank and pump.

For me, I opt to have both working properly and the inline check valve installation as redundancy.
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Old 02-08-2020, 05:23 AM   #3
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Thanks for your help, Kinda figured the valve is bad, going into the panel this morning, got my work cut out for me. I get air in my line when using the pump/tank, I hear the pump kicking on and off. I know I have leaks based on the rusting along the bottom of the panel.
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Old 02-08-2020, 05:25 AM   #4
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Pump can be cleaned and it is very much rebuild-able.
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Old 02-09-2020, 05:32 AM   #5
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You may find the city water inlet is leaking behind your panel.

Most have a plastic check-valve assembly inside and the rubber grommet goes bad over time or becomes unseated and it drips water.

The last water leak I troubleshooted was coming from the shower hot water supply connection to the diverter valve. A light, but steady leak that would cause the pump to come on for just a few seconds every few hours.

Let us know what you uncover.
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Old 02-10-2020, 09:41 AM   #6
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Thanks for all the help. I stopped the tank fill by adj. the diverter handle.
As far as the leak, when I removed the panel, I saw that the filter housing on the pump was very loose. There was a constant drip. I tighten that buggar right up. No more leaks!
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Old 04-03-2020, 03:19 PM   #7
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I addressed the leaking behind the panel, the filter on the pump was real loose. I am still having a tank fill issue. When I have the valve in the "city water" position, I hear no water running in the line, but water is still entering the tank.
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Old 04-03-2020, 06:56 PM   #8
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You need to replace the city water fill valve. It was manufactured by Watts.
The link below will take you to an older post, same problem.


https://www.irv2.com/forums/f105/plu...ue-396105.html


WATTS part number B6780


Link to Watts ball valve https://www.watts.com/products/plumb...es/ball-valves
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