Question about RVs

5 Answers

When I hook up to city water, it goes into my fresh water tank and then overflows. Does anyone know what would cause this?

Posted by on

5 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that has over 10 points.

  • Expert
  • 84 Answers

The check valve on your pump is bad. You can either replace your pump since the check valve is internal, out you can add a check valve to the outlet side of your water pump. That's by far the cheapest solution. Pumps cost $60-$120 and a simple check valve cost only $6-$10 !

Posted on Mar 07, 2016

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 278 Answers

Have you tried opening the valves inside the unit while filling it bringing all the backflow air out of the line? I would try that as you are filling go inside the unit and turn the faucets on every one manually pushes the air out like a gravity thing no pump need if gravity, then turn the pump on after opening valves while filling first there is air in the lines somewhere push it out thats all.

Posted on Mar 07, 2016

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 6 Answers

Probable cause would be a leaking check valve in the pump.

On the RV the city water and discharge from the fresh water pump are tied together. When on city water the discharge of the pump will have city water pressure on it. If the internal check valve on the pump is leaking, water will flow through the pump backwards and into your fresh water tank.

Posted on Oct 28, 2015

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Expert
  • 62 Answers

There should be a second connection for a pressurized line to connect to.
The tank is not for pressurized lines, it is just a fill and the pump in you RV pressurizes it in the system.

Posted on Apr 14, 2015

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Master
  • 10,875 Answers

It does exactly what it is supposed to do,shut off water when it is full

When I hook up to city water, it goes into my fres - 2e7c6deb-b3fa-4de6-96d5-96962c29c408.jpg

Posted on Apr 07, 2015

Testimonial: "The city water line is connected straight to the trailer for water. The holding tank is filled by water hose if there is no city connection, and then you run off the holding tank.When it is connected straight to city water, it should not fill up the fresh water tank.It has only recently started doing this."

  •  johnny rebel
    johnny rebel Apr 07, 2015

    there is a valve near the tank that needs to be closed when hooked up to city water,it is "b" in figure "4"

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I have a 2000 Holiday Aluma Lite Travel Trailer. Having difficulty filling the water tank. There appears to be two places to hook up the hose to fill the tank. Which intake do I hook the hose up to?


There must be a water shut off valve between the tank and the water pump. One of those hook ups will be for city water that goes direct to your tap and the other inlet is to fill the on board tank. Again check for shut off valves.

Jun 12, 2017 | RVs

3 Answers

Why is fresh water tank filling up when hooked up to city water?


Many RVs have the plumbing to fill the fresh water tank from the city water hook up. This valve is usually near the city water hook up and labeling is similar to "city water" and "tank fill". Another anomaly from leaving the valve in the "tank fill" position is that, when not connected to city water, the on board pump may run continuously and the water volume is very low.

Jan 25, 2016 | RVs

1 Answer

Freshwater tank fills and overflows even though selector is pointed at 'city water' position.


Other than a leaking 4 way selector valve the probable cause would be a leaking check valve in the pump.

On the RV the city water and discharge from the fresh water pump are tied together. When on city water the discharge of the pump will have city water pressure on it. If the internal check valve on the pump is leaking, water will flow through the pump backwards and into your fresh water tank.

Typically this requires ether replacing the pump or installing a secondary check valve between the fresh water tank and the pump suction.

Oct 28, 2015 | Keystone 2013 Alpine 3720FB

1 Answer

Fresh water pump hose fitting


look on side there should be 2 one says fresh water tank and the other says city water if not on side look in a compartment if motorhome there could be a valve that says fresh water fill other side of valve says city water

Sep 29, 2015 | Fleetwood 2009 Wilderness 270RBS

1 Answer

Where can I find the plumbing schematic for a 2008 Keystone Springdale 291.


check by your hook ups there probably is a valve for filling the tank vs using city water make sure it is in proper position if no valve sometimes a check valve between tank and pump

Jul 06, 2015 | Keystone 2008 Springdale 291 RKL-GL

2 Answers

2013 Dutchman Infinity 3640 rl. How do I drain one of the grey water tanks?


U SHOULD HAVE A BLACK TANK AND A GRAY. TOWARDS THE BACK WERE U HOOK UP THE HOSE FOR DUMPING U WILL SEE TWO LEVERS ONE IS FOR BLACK ONE IS FOR GRAY. AND IF UR TALKING ABOUT FRESH HOLDING TANK LOOK UNDER NEATH AND U SHOULD SEE A PLASTIC NOSEL WITH A TURN VALVE LIKE WHAT BOX WINE HAS TO PURE A GLASS

May 26, 2015 | RVs

5 Answers

When connecting the water to the city water connection it filled my fresh water tank. Is that normal?


Probable cause would be a leaking check valve in the pump.

On the RV the city water and discharge from the fresh water pump are tied together. When on city water the discharge of the pump will have city water pressure on it. If the internal check valve on the pump is leaking, water will flow through the pump backwards and into your fresh water tank.

Mar 15, 2015 | Heartland 2014 Gateway 3200RS

1 Answer

Is there a valve to open on the fresh water tank when using it?


Yes. Open the outside panel, usually located close to or beside the city water inlet. Should be a diagram showing "normal", "tank fill" and "winterize." Use "fill" to fill the tank. Water will run out the underneath drain when full. I recommend a water pressure limiter just in case the city water pressure is excessive. You can rupture a line or the tank if too high. Rare, but it does happen.

Flip the valves to "normal" to use the city water. If boondocking, the pump will pull from the fresh water tank directly. No need ot change anything.

Oct 08, 2014 | RVs

1 Answer

When hook up city water to rv it shoots out vent


It is likely one of two things, either your RV has a waterline to your fresh water tank that allows you to fill that tank when you are hooked to City water, or the check valve on your water pump is bad and it is allowing city water to fill your fresh water tank. Make sure your freshwater tank is empty, have someone turn the city water on while you watch the freshwater tank... you should be able to see where it is filling from....if it is filling from the water line that run to the water pump, the check valve is bad, if it is filling from a city water fill line, locate the valve on that line and close it. If it is indeed the water pump check valve...you can either replace the pump, or add a cheap inline check valve, like a sharkbite check valve.. they run like 12 to 15 dollars.. install in seconds....you just cut the pex pipe then shove the ends into each end of the check valve.

Mar 20, 2014 | RVs

Not finding what you are looking for?
RVs Logo

Related Topics:

674 people viewed this question

Ask a Question

Usually answered in minutes!

Top RVs Experts

Ken Strite
Ken Strite

Level 2 Expert

69 Answers

Rich Lewis

Level 2 Expert

78 Answers

keylempi

Level 1 Expert

38 Answers

Are you a RVs Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...