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Planecrazy05's avatar
Planecrazy05
Explorer
Apr 22, 2020

Gray and Black tank sensor issue

Hello everyone,

My wife and I have a fleetwood Bound 2010 35H and our black/gray sensors never show empty. Actually the black tank shows full and the gray flashes 2/3 to full even when the tanks are emptied.

I have tried the gauge cleaning solution and followed the directions. I have used the SAN-T cleaner for the black tank every time. I have also had the dealership clean the tanks out two different times ( we bought the RV used about 3 months ago).

I saw on youtube someone post a video of them having their tanks pressure washed out in Phoenix, but I can't seem to find anyone in the Portland area. Does anyone know if some in the Portland area has a pressure washing tank cleaning company?

I called a couple RV mechanics, but none of them knew of a company.

Thanks,
  • Dusty_R's avatar
    Dusty_R
    Explorer
    Apr 23, 2020
    Dusty R wrote:
    pauldub wrote:
    This is a better sensing system.


    X-2
    We had an '02 mh. The probes didn't work well on it, and even if they did I figured that measure in thirds wasn't all that great. So looking at the Scan Gauge I see that they give a % reading. So I ordered a set, and installed them. They worked very well.
    They are circuit boards that stick to the outside of the tanks.
    In 2015 we traded our '01 for a new 2015.
    One of the first things I did was put the Scan Gauge system on our new mh.

    Dusty


    SeeLeal Scan Gauge is a total different, It is for watching the engine.
    Sorry about that.

    Dusty
  • Dusty_R's avatar
    Dusty_R
    Explorer
    Apr 23, 2020
    pauldub wrote:
    This is a better sensing system.


    X-2
    We had an '02 mh. The probes didn't work well on it, and even if they did I figured that measure in thirds wasn't all that great. So looking at the Scan Gauge I see that they give a % reading. So I ordered a set, and installed them. They worked very well.
    They are circuit boards that stick to the outside of the tanks.
    In 2015 we traded our '01 for a new 2015.
    One of the first things I did was put the Scan Gauge system on our new mh.

    Dusty
  • pauldub's avatar
    pauldub
    Explorer
    Apr 23, 2020
    If you really want working sensors, you need to install a different sensing system. Usually if you need to fill your fresh water, you also need to dump the gray and black (at least that's my method). If the toilet is located directly over the black tank, you can just look down the toilet to see how full the tank is.
  • beemerphile1's avatar
    beemerphile1
    Explorer
    Apr 23, 2020
    Learn to ignore them and life will be much better. They never work correctly unless you want to spend the money on a better system that has the sensors outside the tank.
  • enblethen's avatar
    enblethen
    Nomad
    Apr 23, 2020
    The sensor virtually never get clean.
    If you don't have them, installation of holding tank flush units will help.
    Another thing that helps ours is putting a cup or two of liquid dishwashing soap into each of the tanks after dumping along with water.
  • Lwiddis's avatar
    Lwiddis
    Explorer II
    Apr 23, 2020
    These gauges don’t work consistently. Clean them today, they’ll stop working next week.

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