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Old 08-02-2016, 09:42 AM   #1
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water problem

Have a 2013 3050s sunseeker, this weekend while hooked to city water, my freshwater tank filled. i know this is a problem that was in a thread before , just can not find it. should be a back flow valve stuck open or broken, just need to know location of valve. thanks in advance for a response

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Old 08-02-2016, 09:51 AM   #2
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The check valve is usually part of the pump. Replace pump ($$) or 1) find new parts for old pum, 2) add a 2nd check valve on the suction of the pump, or 3) add a ball valve on the suction of the pump. (Check valve if you use the FW tank a lot. Ball valve if you don't.)

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Old 08-02-2016, 09:52 AM   #3
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It will be just after the water pump and before the fresh water system ties into the city water connection.

Here is a link to a typical RV plumbing diagram.
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Old 08-02-2016, 09:55 AM   #4
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Shut off city water
Make sure water pump is off
open faucet
turn on water pump
let water run for a minute
shut off faucet
wait until pump stops.
Shut off pump
turn on city water.

This should reset the back flow valve

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Old 08-02-2016, 10:25 AM   #5
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X'S 2 on fly boys comment, I have used that about 3 different times, It seems that if my pump is on by mistake and I turn the city water on is when it happens to me, that's all I can figure out, but what Flyboy say's will fix it if you do not have a diaphragm problem....
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