Jayco RV Owners Forum

Thread Tools Display Modes
Old 08-05-2014, 12:01 AM   #1
Senior Member
Skaling's Avatar
Join Date: Jul 2014
Location: Langley (Vancouver)
Posts: 397
Water pump

Just spent 5 days dry camping, water pump turned on would activate like normal and pressurize lines and worked great for shower/ toilet etc. However, once in a while when I left the pump on sometimes I would hear the pump 'cycling' or something. Sounded like a small fan going, but no water was being used. Is this normal?

TT: 2015 Jayco Jayflight 26BH Elite
TV: 2014 Ram 1500 Sport, 5.7 HEMI 3.21, Firestone 1000# air suspension. WD hitch w/800# bars
SOLD: 2012 Jayco J-series 1007
Skaling is offline   Reply With Quote
Old 08-05-2014, 05:18 AM   #2
Senior Member
tnchuck100's Avatar
Join Date: Jun 2012
Location: Sparta, TN
Posts: 1,174
It could cycle as you describe if the check valve in the pump is allowing seepage back to the fresh water tank. This could also be seepage at the outside shower, a low point drain, at the water heater relief valve. If you do not have an air bladder accumulator in your system this cycle will be much shorter than a system with the accumulator.

Chuck - Sparta, TN
2012 Jay Flight 22FB, 2 x Honda EU2000i
2013 GMC Yukon XL Denali AWD

EDUCATION is what you get when you read the fine print.....
EXPERIENCE is what you get when you don't.
tnchuck100 is offline   Reply With Quote
Old 08-05-2014, 05:31 AM   #3
Moderator Emeritus
Rustic Eagle's Avatar
Join Date: Apr 2011
Location: Michigan
Posts: 7,371
My pump would act like that once in while if my HWH was turned on....


2016 GM 2500HD 6.0L/4.10
2018 Jay Flight 24RBS
2005 Jayco Eagle 278FBS (retired)
1999 Jayco Eagle 246FB (retired)
Reese HP Dual Cam (integrated sway control)
Rustic Eagle is offline   Reply With Quote
Old 08-05-2014, 07:39 AM   #4
Senior Member
Seann45's Avatar
Join Date: Jun 2010
Location: Saskatoon Sask Canada
Posts: 9,701
IF it does it often you have a pinhole in the pipes somewhere.. if it is just a once in a while thing then it is just probably leak back and not to worry.. I find it annoying and shut the pump off when not in use..
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 765 watts of solar, 6-6 volt batteries (696 amp hour), 2000 watt (4000 surge) whole house inverter.
175 days boondocking in 2017
215/2016, 211/2015, 196/14, 247/13, 193/12

Seann45 is offline   Reply With Quote
Old 08-05-2014, 11:24 AM   #5
Senior Member
Cosmik Debris's Avatar
Join Date: Aug 2013
Location: Missoula, Montana
Posts: 555
If there is a leak you'd normally eventually see evidence, but one person wrote that there leak was in the toilet valve and thus the bowl would get what little seep that occurred unnoticeable to them. The suggestion in that case was to turn off pump, drain toilet bowl, wipe dry, turn pump back on. You could put a sheet of TP in the bowl which would make any seep visible.
Cosmik Debris is offline   Reply With Quote
Old 08-07-2014, 07:24 AM   #6
Junior Member
Join Date: Jul 2014
Location: Syracuse
Posts: 21
Expansion and contraction of the water in the supply lines will cause this to happen. Water in hot water lines will cool thus contracting and making more space, once more space is made water from the hot water tank will get pushed into those lines thus causing water to need to go into the hot water tank via the water pump. This happens to me all the time withc temperature changes especially in colder waether but I also hear it in the warmer months too. My 2 cents and experience tell me this is normal operation as long as it is in quick short blast and not a steady on cycle.
Jayrundle is offline   Reply With Quote
Old 08-08-2014, 08:09 AM   #7
Senior Member
edowsfamily's Avatar
Join Date: Mar 2012
Location: Central Connecticut
Posts: 441
check the drain plug in the water heater. ours did the same and the plug was leaking i just tightened it up

2011 GMC Serria Ext Cab LB
2012 Jayflight 22FB
edowsfamily is offline   Reply With Quote
Old 08-08-2014, 08:17 AM   #8
Join Date: Mar 2014
Location: Hartford
Posts: 46
My pump never runs unless water is on. The one time it did (once every 5 minutes or so), I was able to figure out that the outside shower cold water was cracked just ever so little that a little water would trickle out! Drove me crazy until I found it. I would check that all your water faucets are completely off before digging to deeply.

Just my 2 cents!
gvn71 is offline   Reply With Quote
Old 08-11-2014, 10:08 PM   #9
Senior Member
Join Date: Dec 2010
Location: North Idaho/Arizona
Posts: 5,303
Our pump will run for a couple of seconds once or twice a night. All of our trailers have done this.
2011 Eagle 330RLTS with just about every option.
2017 Silverado 1500 4x4 5.3 with tow package.

I was born with nothing and I still have most of it left.
clutch is offline   Reply With Quote
Old 08-12-2014, 07:30 AM   #10
Senior Member
SmokerBill's Avatar
Join Date: Sep 2010
Location: PNW
Posts: 2,699
I've noticed this at times, especially after first filling the fresh water pipes in the tt. Air trapped in the system will contract as the ambient temp drops, and cause the pump to cycle on momentarily. after most of the air has worked out of the lines, it seems to stop the pump cycling.

Could also be any of the other above causes- I had a check valve that back leaked a little, causing the pump to run, but it cleared up on its own. When I use my water heater (rarely), sometimes the pressure relief valve leaks a little. I open/close it and it usually stops the leak (and pump cycling).

Good luck troubleshooting your problem

2011 Dodge Ram 1500 HEMI Quad Cab
2011 Jay Flight 26BH
SmokerBill is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Virginia State Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -6. The time now is 03:04 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2002-2016 Social Knowledge, LLC All Rights Reserved.