Good Sam Club Open Roads Forum: Gray and Black tank sensor issue
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 > Gray and Black tank sensor issue

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Planecrazy05

Arizona

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Posted: 04/22/20 05:55pm Link  |  Quote  |  Print  |  Notify Moderator

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,

Lwiddis

Owens River Road, California

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Posted: 04/22/20 06:01pm Link  |  Quote  |  Print  |  Notify Moderator

These gauges don’t work consistently. Clean them today, they’ll stop working next week.


Winnebago 2101DS TT & 2020 Chevy Silverado 1500 LTZ Z71, 300 watts solar-parallel & MPPT, Trojan T-125s. TALL pole for flags. Prefer USFS, COE, BLM, NPS, TVA, USF&WS, state & county camps. Bicyclist! 14 year Army vet - 11B40 then 11A - (MOS 1542 & 1560)


enblethen

Moses Lake, WA

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Posted: 04/22/20 06:15pm Link  |  Quote  |  Print  |  Notify Moderator

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.


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beemerphile1

Ohio

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Posted: 04/22/20 07:09pm Link  |  Quote  |  Print  |  Notify Moderator

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.


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pauldub

North of Seattle

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Posted: 04/22/20 07:40pm Link  |  Quote  |  Print  |  Notify Moderator

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.

pauldub

North of Seattle

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Posted: 04/22/20 07:41pm Link  |  Quote  |  Print  |  Notify Moderator

This is a better sensing system.

Dusty R

Charlotte Michigan 48813

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Posted: 04/22/20 08:25pm Link  |  Quote  |  Print  |  Notify Moderator

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

Dusty R

Charlotte Michigan 48813

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Posted: 04/22/20 08:31pm Link  |  Quote  |  Print  |  Notify Moderator

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

ernie1

Sacramento,California,USA

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Posted: 04/22/20 10:07pm Link  |  Quote  |  Print  |  Notify Moderator

Planecrazy; I think there are a lot of good suggestions mentioned here to solve your problem but if you're like me and prefer to make the sensors work like they're supposed to you might try what I've been doing for years and 6 rvs. Since my gray water tank is totally inaccessible for flushing, I put about a quarter cup of tsp powder that has been dissolved in water and about the same amount of Calgon water softener powder into the gray water tank and then fill the rest of the tank with water, let it sit at least over night drain in the morning and you're good to go. The black water tank is usually accessible through the top of the bowl and that is where I put a water powered wand in and blast the bowl and the sensors. Keep in mind where the sensor are located and concentrate on water blasting that area. I've done this for over 25 years and it has always worked for me.

wa8yxm

Wherever I happen to park

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Posted: 04/23/20 06:31am Link  |  Quote  |  Print  |  Notify Moderator

Planecrazy05 wrote:

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


And they never will show empty unless you get very lucky.

The "Sensor" is basically a nail (Technically it is a metal rod) stuck in the side of the tank. if the side of the tank is "Slimed" then the nail is wet all the time and thus the sensor does not show empty.

There are several possible solutions

HORST miracle probes These are still "Nails" but they have some added features and are advertised as being immune to the problem above.

Pneumatic sensors (Pressure switches) I"m supposed to have some but I don't (long story) these work..... on pressure. they can also fail.

See-Level sensors. DO not have them but everyone I've spoken with who does says very nice things.. These work..... differently.


What can you do with the existing sensors
Cleaning the tank (Geo method) has worked for me so has "Blasting" the sensor wall with a home made version of the Valtera Master Blaster tank cleaning wand... But not often

Haveing the tank professionally steam cleaned would work but is expensive.

I'd suggest the See Level system or what most of us do. Live with it.


Home is where I park it.
Kenwood TS-2000 housed in a 2005 Damon Intruder 377


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