City water issue

Matilda2xhr

Hello, when I set my water to City Water mode and turn on the water, it immediately flows out via the overflow tube.  Anyone experience this and have idea what the problem is?  Thanks!

Pintoplumber

It’s always a good idea to post your year and model number.

Sharon_is_SAM

if you mean, the fresh water tank overflow tube, the check valve in the pump may have failed allowing water to enter and fill the fresh water tank.

Matilda2xhr

Thank you both!  By the way, it's a 2023 320S. 

Yoshi_TAB

Hi, Here is a thread with a similar issue that is worth reviewing.

TAB 320S BD City Water overflowing

pthomas745

Look under the trailer and find the exact spot or drain where the water is coming from.

If you are not using a water pressure regulator on city water, you may have "tripped" the Famous Yellow Flapper valve, which you can find under the driver's side bench down near the Alde.  If you are using a pressure regulator, the yellow valve may have just been left open.  Look at the link posted by Yoshi that has pictures and descriptions on what to look for.

Matilda2xhr

THANK YOU EVERYONE!  Problem resolved....it was the "famous yellow flapper." Appreciate everyone's input.