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Old 09-26-2021, 11:41 AM   #1
1 Rivet Member
 
2022 20' Caravel
Central Coast , Oregon
Join Date: Jan 2018
Posts: 6
Help, on the road water pump not pumping

Hello
I have a 2022 20í Caravel. Water pump has power and is running, but not pumping any water (since it doesnít build pressure it keeps running) Iím afraid to let it run more than a couple of minutes at a time. Full FW tank. When on city water all systems okay. (No leaks)
Pump was working great when we picked up the trailer about three weeks ago.
I have checked all accessible fittings for tightness. Checked and cleaned minimal amount of debris from screen. Donít see any water or bubbles in the filter screen ďcapĒ,
I have researched this as best as I can, but have poor internet in the campground.
Going to dry camp the next six daysÖ. So solving this is critical
TIA,
Jay
P.S. the owners manual states water pump is under the microwave, the pump is actually under the rear dinette (IDK if this was a 2022 change) will try and post a picture, but the suction side goes UP, back and down as far as I can tell. This makes no sense to me.
Another day Iíll post on the quality-unfortunately Airstream still doesnít get itÖ..
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Old 09-26-2021, 12:55 PM   #2
Half a Rivet Short
 
2017 30' Classic
2022 Interstate 24X
Carlisle , Pennsylvania
Join Date: May 2017
Posts: 12,546
Hi

One embarrassing possibility is that a drain valve is just a bit open. I'm not going to tell you just how long *somebody* might have taken to spot that fact .... errr ... once upon a time

The fittings on the pump unscrew easily. You can unscrew the "output" side and cover it with your thumb (otherwise you get a flood ...).

1) put a small pan by the pump output and briefly turn on the pump. See if there is water coming out. If not, put the pipe back on.

2) unscrew the input side pipe. Water should spill out of the pipe into that pan you have handy. If not, the input pipe is blocked somehow.

3) same thing with the strainer cover. If the fresh water tank really is full, you should get water out as you unscrew it.

4) Next up is making sure the fresh water tank is indeed full

Somewhere along in there you should spot a problem.

Bob
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Old 09-26-2021, 01:03 PM   #3
CRH
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1995 25' Excella
xxxxx , xxxxxx
Join Date: Apr 2015
Posts: 2,010
Make sure the o ring is in the clear cap on the strainer. Without it, the pump will suck air. If the oring is in place, the next thing I find that works is to prime the pump by pouring some water in the strainer. That might be difficult with yours mounted sideways.

I assume you are opening a faucet while turning the pump on. That will let the trapped air out. I would open a couple of faucets and flip the pump switch off and on a few times...Works for me anyway.
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Old 09-26-2021, 01:18 PM   #4
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2012 25' FB Eddie Bauer
Vintage Kin Owner
Virginia Beach , Virginia
Join Date: Sep 2004
Posts: 7,638
Wild, perhaps futile hope. check the filler cap on the white tank. I don't know of any reason that the pump would be affected by whether it is open or closed except that air has to enter the tank as water flows out.... so if the vent that let's air out while you are refilling is blocked, could the pump be sucking against a vacuum? Run the pump after opening the cap just to test.
AMAZON. Get a new pump and replace. I guarantee your current one is located where a midget contortionist can easily replace it. You will be glad of a spare.
Slim chance. Something in the white tank is blocking the water flow to the pump. Construction debris? Pull the pump and test OR unhook the supply side of the pump and hook up a hose with a (water thief or just a screw on clamp) turn on the pump and the water to the hose and if the pump does not prevent a mess, the pump has gone bad. IF the pump does work, it is time to check the pipes from the tank to the pump, then drain the tank. A particularly vicious "prank" I heard of in my youth was to put a marble into someone's gas tank.
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Old 09-26-2021, 01:24 PM   #5
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2012 25' FB Eddie Bauer
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Virginia Beach , Virginia
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Quote:
Originally Posted by uncle_bob View Post
Hi

One embarrassing possibility is that a drain valve is just a bit open. I'm not going to tell you just how long *somebody* might have taken to spot that fact .... errr ... once upon a time

Bob
OMG, and the full white tank is now empty! Troubleshooting 101 - look for the simplest/dumbest problem. Only happens to "someone" who is meticulous about sanitizing!
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Old 09-27-2021, 09:46 AM   #6
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2019 25' International
Washington , Washington, D.C.
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It looks like your water pump is easily accessed - lucky you! If you're on the road and don't want this to interrupt travels, just get it replaced. Oftentimes, a campground (KOAs especially) have Mobile RV services they contract with for their campers to get repairs on the road. Before its replaced, examine the pump. I had one once that didn't work simply because a piece of hard plastic was in its innards.
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Old 09-27-2021, 09:49 AM   #7
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2017 30' Classic
2022 Interstate 24X
Carlisle , Pennsylvania
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Quote:
Originally Posted by Foiled Again View Post
OMG, and the full white tank is now empty! Troubleshooting 101 - look for the simplest/dumbest problem. Only happens to "someone" who is meticulous about sanitizing!
Hi

In our case it was "why is it taking so long to fill this tank? we've been putting water in it for an hour .... "

Valve got left open after winterizing the trailer.

Bob
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Old 09-27-2021, 09:55 AM   #8
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2003 25' Classic
Zanadude Nebula , Milky Way
Join Date: Jun 2007
Posts: 18,100
Images: 1
Quote:
Originally Posted by Il Bambino View Post
Hello
I have a 2022 20í Caravel. Water pump has power and is running, but not pumping any water (since it doesnít build pressure it keeps running) Iím afraid to let it run more than a couple of minutes at a time. Full FW tank. When on city water all systems okay. (No leaks)
Pump was working great when we picked up the trailer about three weeks ago.
I have checked all accessible fittings for tightness. Checked and cleaned minimal amount of debris from screen. Donít see any water or bubbles in the filter screen ďcapĒ,
I have researched this as best as I can, but have poor internet in the campground.
Going to dry camp the next six daysÖ. So solving this is critical
TIA,
Jay
P.S. the owners manual states water pump is under the microwave, the pump is actually under the rear dinette (IDK if this was a 2022 change) will try and post a picture, but the suction side goes UP, back and down as far as I can tell. This makes no sense to me.
Another day Iíll post on the quality-unfortunately Airstream still doesnít get itÖ..
Is that the way all new WP's are mounted?
Our pump has all lines on the floor, even with the pump.
I can see the configuration causing an air lock...rong?

Bob
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Old 09-27-2021, 10:16 AM   #9
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1973 21' Globetrotter
Houston , Texas
Join Date: Sep 2009
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Hmmm, yeah, as I look at that picture in the first post, it is hard to tell if water is filling the filter and clear line from the tank, or if they are completely empty. It does seem a weird way to install a pump, having to overcome a "hill" like that to get the water moving.

Anyway, if these lines are full of air, it may be because the pump isn't creating enough vacuum, or it could be that it just needs to be primed.

Another thing to try is just to remove the cover that hides the diaphragm, and rinse that whole section out thoroughly. If you managed to suck some debris into the pump, it might not be sealing enough to create a vacuum. Typically, this also results in the city water pushing through the pump and overfilling the FW tank. Have you noticed water gushing out of your overfill lines while running on city water?

Don't be in too much of a hurry to just replace the pump. There are plenty of other things to confirm (as stated above) before condemning the pump.

good luck!
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Old 09-27-2021, 04:28 PM   #10
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1988 32' Excella
Robbinsville , New Jersey
Join Date: May 2012
Posts: 1,676
It looks like you have a valve for switching from the tank to a hose to put into a jug of antifreeze for winterizing. Check to make sure that valve is in the correct direction. If it is right you can switch it to the hose and try pumping from a jug of water.
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