2021 Cedar Creek 388DB

Pops927 · 05-17-2021, 09:04 PM

We are new to RVing and have noticed the Fresh Water tank continues to fill even when the valve is turned to city. Can anyone help with this issue? It keeps overflowing through the overflow hose out the bottom. Please help!

httntheroad · 05-17-2021, 11:33 PM

Try turning off citywater supply . Turn on pump,run water, turn off water let pump re pressure ,turn off pump .turn back on city water.sounds like you back flow valve in pump sticky. This has worked for me.

LittleBill · 05-18-2021, 09:51 AM

Quote:

Originally Posted by Pops927

We are new to RVing and have noticed the Fresh Water tank continues to fill even when the valve is turned to city. Can anyone help with this issue? It keeps overflowing through the overflow hose out the bottom. Please help!

Make sure your valve is all the way to city. Or it could also be the the check valve is stuck open and doing what Pops said may allow it to reset. If it continues to happen, you could try installing a new city/rv valve or add a shutoff valve after the city/rv valve on the line that feeds the tank.

My FW tank overfilled one time (Aug 2019) since I have had it when I had it on city. It probably was because I didn't have the valve lever all the way over as I haven't had the problem again. But I did have a shutoff valve installed in the line to the FW tank after the city/rv valve just in case it ever happened again, then I could just shut the valve and continue to use the city water connection.

Hope this helps a little - Good luck -

LittleBill · 05-18-2021, 10:29 AM

Went out and took a picture of the shutoff valve behind the control panel on the FW feed. You will need to make sure it is open when you fill your FW, I have never turned it off since installing it. It won't affect pumping water from the tank only filling it.

Good luck -

Pops927 · 05-18-2021, 10:46 AM

I will try these suggestions and hopefully it will help. I do have a shutoff where the hose is used to winterize. Will that work to stop the tank from filling if I shut it off?

5picker · 05-18-2021, 11:17 AM

Quote:

Originally Posted by Pops927

I will try these suggestions and hopefully it will help. I do have a shutoff where the hose is used to winterize. Will that work to stop the tank from filling if I shut it off?

Yes it will stop the fresh tank from filling... BUT... it will not fix the issue of the water getting past the pump's internal check valve and so, by turning the winterizing valve, the water will simply divert out to the winterizing port and run down the side of the R/V. (unless you have just a short winterizing hose with a cap near the pump)

If you have a short hose with a cap for winterizing, you could make sure the cap is tight and then it temporarily solves the issue of filling the fresh tank but you wouldn't want the cap leaking water inside your R/V.

If your winterization hose goes to a port on the outside, you could screw a $1 garden hose shutoff in the port and again, temporarily stop the filling of the fresh tank. These suggestions are just band-aids to salvage a camping trip.

Pops927 · 05-18-2021, 11:22 AM

Good information...thank you!

LittleBill · 05-18-2021, 12:49 PM

Quote:

Originally Posted by Pops927

I will try these suggestions and hopefully it will help. I do have a shutoff where the hose is used to winterize. Will that work to stop the tank from filling if I shut it off?

If it's the hose I am thinking about, I don't think so as that hose is only used for sucking in RV antifreeze. It's not used for filling your FW.

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