Community Forums

benford · 10-15-2012, 04:10 PM

My fresh water shows empty no matter how much water is in there, on every startup I hear "Low fresh water storage" gets real annoying after awhile, I have found the sensors on the tank everything looks fine ,no loose wires, should I just disable the warning and live with it or can it be fixed?
Thanks,
Benny

B Bob · 10-15-2012, 09:38 PM

I had a see level sensors put in my rig two years ago as the ones that came with the coach were not reliable. See level ones work very well. I can tell when I have 56% fresh water. I also disconnected the voice nag.

deandec · 10-15-2012, 11:06 PM

You can replace the sensors as B Bob did or try to test the PCB components that control the voice box.

I had luck repairing components on my automatic fresh water fill pc board a couple of years ago. I got lots of help from the good folks at rv.net in the diagnosis and repair.

It would be difficult to hire someone to diagnose the board components at a reasonable cost. So most likely replacing the sensor is the easiest fix. PC Boards are disposable items these days and replacement proprietary boards would be hard to find.

B Bob · 10-16-2012, 08:02 AM

One thing I forgot to mention. When I had Kevin Waite put in the See Level sensors the auto stop-fill system stopped working. When I was in Oregon last year I forgot to have it fixed, or re-hooked up. So if you replace your sensors keep that in mind. BTW I did not decide on a whim to replace the standard sensors. I tried many times to get them working right. But after many failed efforts I had the Sea Level put in.

wa8yxm · 10-16-2012, 08:44 AM

Here is the basic wiring diagram for the standard water sensor set up on most motor homes.

Panel----Full---/\/\/\---2/3---/\/\/\--1/3 G----Ground

The sensors themselves are nothing more than a metal spike. They hook at the indicator points.

What can happen.....

On my coach the connection between the very small wire to the resistor pack came off the much larger wire to the panel... I re-connected using proper ELECTRONIC methods instead of a crimp on that crimped off.

The resistor pack can fail.

IT is about eight bucks and easily replaced.

To test

Find the resistor pack (If you have that type)

Method one,, Use a jumper wire between the FULL sensor (The top one) and the grond sensor (The one that does NOT connect to the resistor pack

If panel now shows full, the pack is bad

If the panel shows empty the wire is bad

Method 2.. Identify the resistor pack wire that runs to the panel (not to the tank) Short IT to the ground sensor.

benford · 10-17-2012, 03:55 AM

Great information....thank you all very much....

benford · 10-20-2012, 06:26 AM

I think I found the pc board that is my problem, ended up just pulling the connector off to the fresh water sensor , so now it just doesn't work at all and the voice lady finally shut her face up about it....I am happy with it, we don't use alot of fresh water just when traveling , thanks everybody!!!

jofo777 · 10-20-2012, 02:43 PM

And just where did you find that durn board? Joe

benford · 10-21-2012, 05:53 AM

Quote:

Originally Posted by jofo777

And just where did you find that durn board? Joe

The board is behind the control panel, over to the right on mine there are three small boards standing on edge in a wooden homemade looking mount, they have wires plugged in from the top, the board on the far right is the one for the tank levels, I found the wire #366 goes to my fresh water sender and unplugged the little bugger,
No more "Low fresh water storage " from the voice lady.....WOOHOO!!!
NOW if I can locate the one for "outside storage compartment is open"