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Old 07-27-2013, 08:51 AM   #1
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Red face running water

Please help, we have a 1991 Excel camper that we use when going to 4H fair. This year when we hooked up to the city water hydrant water started running out of the side of the camper. I turned off the valve to the fresh water tank but it still runs out the side. What did I miss?

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Old 07-27-2013, 09:35 AM   #2
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Did you have a freeze up and loose a line? Turn the water on low pressure and look for perhaps a open valve. Just where is the water coming out from? under or following the floor out?

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Old 07-27-2013, 12:14 PM   #3
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When you say it is running out the side, do you mean out the fresh water tank fill inlet on the side of the unit? If so, then the problem is likely the 'check valve'. Normally this is an inline valve near where the city water line and the 12V pump line meet. It is a one way valve to prevent city water from back feeding into the water tank. Yours is probably stuck open due to age and sediment. You might locate the valve, it will look similar to an inline fuel filter ( it won't have a handle) and maybe tapping on it will solve the problem. Another temporary solution would be to just cap that line if you are only going to use city water. Third option is to not use city water, but just run off the 12 v pump.

If the water problem is someplace else, you will need to find the source of the leak. Are you using a water pressure regulator from the city water tap? If not, then higher than normal pressure will find weak points in the system, especially on an older unit.
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Old 07-27-2013, 05:27 PM   #4
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Did it start gushing right away or was it like 20 minutes later?

If it was right away, YOU may (or not) have a problem, I'll come to the diagnosis.

If it took quite a while you likely have the quick valve set in the fill position, this is a valve usually near the inlet, NOT ALL RV's HAVE THEM

or you hooked to the "Fill the tank" fitting.

IF it was fairly quick

You may have either

1: Removed the drain plug from the heater or
2: Opened the TPR valve using the manual release

In these cases water will come out the water heater cabnet outside access.
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Old 07-28-2013, 07:01 PM   #5
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Are you using a regulator on the water inlet? I have seen pressures as high as 80 psi in some RV parks, that could be enough to blow a fitting or line.
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Old 07-28-2013, 08:41 PM   #6
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Try removing the 3 screws securing the water inlet fitting to the trailer. Gently pull it out and you will probably see the fitting inside. Tighten it by hand and I suspect you will be ready to go


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