Go Back   iRV2 Forums > TRAVEL TRAILER, 5th WHEEL & TRUCK CAMPER FORUMS > Trailer Towing and Tow Vehicles Discussion
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 03-21-2016, 08:13 PM   #1
Junior Member
Join Date: Mar 2016
Posts: 6
Question Help Troubleshoot Tank Monitors on New Trailer

I asked on another site, but figured I would try here since I stumbled upon a similar problem and a troubleshooting post. But I need a little more detail on troubleshooting.

New trailer, still under warranty. Fresh water tank monitor shows E when totally full. No idea if grey or black tank monitors work, I havnt filled them.

For now, Im focused on teh fresh water one. There are wires connected to the sensor on the tank. From there, I don't know.

It is an Intelli-View panel. Can I 'bench test' these sensors by jumpering them and checking the panel? If so, how?

If I understand it, the fact that the freshwater button yields an E light, means that the wire from the resistor block to the panel is in fact operational. Yes?

Do I just connect a lead to the ground (white) wire on the tank and then the other to each of the other terminals on the tank and see if a corresponding led lights up?

Im far enough away from anywhere that it often benefits me to fix these things myself rather than rely on a dealer, thats why Im asking, in case anyone is wondering.

Oh, and the battery function DOES work on the panel, so all the LED are at least functional for it.

agdodge4x4 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 03-22-2016, 06:17 AM   #2
Senior Member

Holiday Rambler Owners Club
Join Date: Aug 2015
Posts: 1,177
Typical Tank Contact Sensor-based Wiring Diagram


Below is a diagram that I consult when I want to remind myself how "traditional" sensor-based tank level indicating systems work.

As you suggest (and although I've not done it), you should be able to jumper each tank's sensor wire to its ground and light the appropriate lights.
Attached Thumbnails
Click image for larger version

Name:	holding-tank-monitor-system-old-school-installation-instructions.jpg
Views:	180
Size:	66.8 KB
ID:	122034  

2008 Holiday Rambler Admiral 30PDD (Ford F53 chassis)
2009 Honda Fit Sport
l1v3fr33ord1 is offline   Reply With Quote
Old 03-22-2016, 10:12 PM   #3
Join Date: Feb 2016
Posts: 30
We have owned several different rigs, and MHO is forget the gauge lights, because they get gummed up with "stuff" and are pretty much useless. Although the fresh water should not be gummed up.
porchdog2 is offline   Reply With Quote
Old 03-23-2016, 07:41 AM   #4
Junior Member
Join Date: Mar 2016
Posts: 6
Yeah, and I probably don't even need it, but since im new to this, Id like to have a gauge for a few trips so I can get a handle on water usage. The filler hole for fresh water is so small, I can't see how much water I have. If I could, that would be sweet.
agdodge4x4 is offline   Reply With Quote
Old 03-23-2016, 08:40 AM   #5
Senior Member
pcurt23's Avatar
Join Date: Apr 2010
Posts: 1,073
Originally Posted by agdodge4x4 View Post
Yeah, and I probably don't even need it, but since im new to this, Id like to have a gauge for a few trips so I can get a handle on water usage. The filler hole for fresh water is so small, I can't see how much water I have. If I could, that would be sweet.
The fresh water sensor should always work. The black tank sensor is usually problematic and requires flushing on a regular basis. The grey tank is in the middle.

You should take it back to the servicing dealer and have them look at it.

In time you will learn your tanks performance but I agree with you they need to be working when new.
2007 Fleetwood Bounder 38V
pcurt23 is offline   Reply With Quote
Old 03-23-2016, 09:33 AM   #6
Senior Member
tuffr2's Avatar
Join Date: Sep 2012
Location: Columbus Ohio
Posts: 2,073
I know you are asking about your fresh water tank but the black tank gauge will Always work if you have a black tank flush. You need to use the black tank flush for 10 - 15 minutes after dumping. 5 year old trailer bought new and all sensors still work.

Now to the fresh water tank. If it has never worked then it is my guess you have a loose or disconnected sensor wire somewhere.

Or worse yet a mouse got into your trailer and chewed the wire.

Agree that the the fresh water sensor gives the least problems followed by gray then black with the most problems. My very 1st trailer did not have a black tank flush and the black tank sensor did not work.

Good luck and let us know what you find out.
tuffr2 is offline   Reply With Quote
Old 03-23-2016, 12:03 PM   #7
Junior Member
Join Date: Mar 2016
Posts: 6
I will. All wires are connected to the fresh water tank itself. I looked. I dont know if the blue wire is connected to teh panel, maybe they forgot, but I assume that since I DO get an E light, that the wire MUST be connected to the panel.
agdodge4x4 is offline   Reply With Quote
Old 03-23-2016, 12:11 PM   #8
Senior Member
Monaco Owners Club
Holiday Rambler Owners Club
Join Date: Jan 2013
Location: michigan-tip of the mitt
Posts: 1,250
It's under warranty. Don't mess with it. You will have other issues so make a punch list and deliver it back to the dealer when you won't be using it for a while. Manufacturers and some dealers love the words, you tried to fix it and voided your warranty.
"96" HR Navigator, 38' no slides, Cummins, Allison
next stop
t55watson is offline   Reply With Quote
Old 03-23-2016, 04:42 PM   #9
Senior Member
Outdoors RV Owners Club
Join Date: Dec 2014
Location: Nowhere, now here. Freedom!
Posts: 2,494
The "E" light comes on if there is power to the panel when you push the button. It doesn't mean much more than that.

ORV 19B Full Timer, '14 Ram 2500 Diesel and a GSD. This signature updated, August 13, '16.
Currently working in Idaho Falls ID de K7NOL 146.52Mhz Safety? (CLICK ME!)
1bigmess is offline   Reply With Quote


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Help with troubleshoot and repair TV lift phinneyj Monaco Owner's Forum 3 08-26-2015 01:34 AM
Older Winegard Sat. RM-9946 Troubleshoot Help B_Regal Technology: Internet, TV, Satellite, Cell Phones, etc. 2 08-13-2015 09:11 AM
No clearance lights - please help troubleshoot XLI Travel Trailer Discussion 2 07-05-2013 03:54 PM
Need help to troubleshoot a transfer switch harleyman134 Newmar Owner's Forum 10 03-21-2011 04:11 PM
Low 12v voltage warning - help troubleshoot dmurdock 5th Wheel Discussion 7 11-19-2005 03:01 PM

» Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:03 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.