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Old 05-02-2016, 09:30 AM   #11
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By pass valve

Yep. Just got my 2016 Surveyor back on Saturday from the dealer. I had that same issue, brand-new. Bad valve from the factory. Apparently not checked by the dealer because I discovered the issue at home - along with about 10 other items, pinched hoses, etc.

All good now. On board water works...city water works...potable tank disinfected, still need to mount bedroom tv. (oh, yeah, remember to lube the equilizer hitch. . . the dealer didn't mention that)
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Old 05-02-2016, 11:04 AM   #12
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Didn't realize you needed the pump on when connected to city water.
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Old 05-02-2016, 11:31 AM   #13
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He did not say he was hooked up to city water, said the water shot out. I think that is what threw us.
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Old 05-02-2016, 12:21 PM   #14
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You are correct doc. Looks like I need to read a bit more carefully.
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Old 05-02-2016, 12:26 PM   #15
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Odd that it would only happen when there was demand at a faucet. Basically, the pump should kick on to pressurize the system and not kick off if not pressurized. As long as that check valve is stuck open, it shouldn't be able to pressurize and would be constantly running, shooting water out of the city water connection regardless of whether or not there was demand at a faucet.




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Old 05-02-2016, 12:42 PM   #16
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You are correct doc. Looks like I need to read a bit more carefully.
I read it bunch of times, though I missed it!
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Odd that it would only happen when there was demand at a faucet. Basically, the pump should kick on to pressurize the system and not kick off if not pressurized. As long as that check valve is stuck open, it shouldn't be able to pressurize and would be constantly running, shooting water out of the city water connection regardless of whether or not there was demand at a faucet.




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I was wondering the same thing the more I thought about it. Maybe pressure seals it, drop (opening faucet) unsealed it and when closed the pressure eventually reveals? I dunno.

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Old 05-02-2016, 01:15 PM   #17
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Did it do this prior to having plumbing work done?
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Old 05-02-2016, 01:58 PM   #18
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I read it bunch of times, though I missed it!

I was wondering the same thing the more I thought about it. Maybe pressure seals it, drop (opening faucet) unsealed it and when closed the pressure eventually reveals? I dunno.

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I was thinking about this more while I was gone for lunch, I suppose it could be explained if the city water connection was installed on the inlet side of the pump instead of the outlet side. If it was plumbed that way, then it would explain it only coming out the city water connection when the pump is drawing water from the fresh water tank.

But if it was plumbed that way, whenever he uses the city water hookup that would be going through the pump and backfilling the fresh tank....unless it's one of those rigs with the selectable inlet. You know those ones where they have to switch between city hookup and filling fresh all though one?


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Old 05-02-2016, 03:27 PM   #19
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I was thinking about this more while I was gone for lunch...
Actually it wouldn't explain it. If the city water was incorrectly plumbed as you indicate, nothing would come out of it since it would be on the suction side of the pump. Now, if it were lower that the tank it would siphon, but all that still points to a bad check valve on the city water fitting.
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Old 05-02-2016, 04:00 PM   #20
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Actually it wouldn't explain it. If the city water was incorrectly plumbed as you indicate, nothing would come out of it since it would be on the suction side of the pump. Now, if it were lower that the tank it would siphon, but all that still points to a bad check valve on the city water fitting.

It might be explainable if the check valve was installed in reverse. The way I'm picturing it as there's suction then the check valve closes due to the vacuum pressure, but as that's replaced with a draw from the tank occasionally the water pressure could force the backwards installed check valve open.

Kind of hard to explain, but this seems plausible. The failure side of this would be that if the check valve was installed backwards, it couldn't be used for city water....



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