Holding tank level indicator

[NewbieRandR]

2008 Winnebago Outlook

The level indicator panel in the MH indicates that the black tank is 2/3 full even after I have dumped. Is there a fuse or some other cause of this type of failure, or do I have to replace the tank gauges?

Thanks for any input.

[ronfisherman]

Dusty R wrote:
SeeLeveL Liquid Level Gauges by Garnet Instruments Ltd.
Check these out. Read out is in % not thirds.

Dusty

I have the SeeLevel system in my MH. Works great. But build up on tank wall can cause inaccurate reading. Had it happen one time. Ran tank washer to get back to proper readings. Is it worth the almost $200 cost. I would say yes.

[Gene_in_NE]

NewbieRandR wrote:
2008 Winnebago Outlook

The level indicator panel in the MH indicates that the black tank is 2/3 full even after I have dumped. Is there a fuse or some other cause of this type of failure, or do I have to replace the tank gauges?

Thanks for any input.

As others have posted, the tank level lights are not very reliable because of some "tp" still stuck to the side wall. Some have suggested soap and softener, they are refering to a practice called the Geo Method. We practice this faithfully and about 75% or more of the time have accurate readings.

[Dusty_R]

SeeLeveL Liquid Level Gauges by Garnet Instruments Ltd.
Check these out. Read out is in % not thirds.

Dusty

[Old-Biscuit]

Similar post......LINK

[DAS26miles]

I have had the same issue many times after dumping my Class C Winnebago. It has always been the sensor area in the tank isn't clean. I purchased a tank wand and always give the tank a thorough flush/cleaning after every trip. It is hard to do that on the road, especially with others waiting to dump behind you. Note, if you let the tank dry out, it's much harder to clean it later. Pouring detergent or Calgon works too making the tank walls slippery.
Added note: I tried the back flushing method, but only the wand with a direct jet pointed at the sensors did the job.

[derh20]

You could also have a black water flush installed on your RV. A nozzle is installed into the black tank which is connected to a hose connection on the outside of your rig. then just connect a hose at the dump station and turn the water on. the nozzle inside the tank sprays water to clean the sides of the black tank. In addition, add detergent and Calgon the tank after emptying.

[darsben]

actually the best result would be to fill the BW tank a few days before you leave home adding a couple of caps of low sudsing laundry detergent. this will allow time for any klingons to dissolve and the swishing action enroute to your destination will agitate the remainder off. Some people throw in 20 lbs of ice just before leaving to provide more cleaning action BUT I do not believe it helps with the tank almost full

[dbbls]

The black tank gauge is almost impossible to keep working. Hardly anybody uses it, just dump every week or so and you will be fine.

[cyntdon2010]

yeah newbie! I have also gave up on the tank sensors.

I have cleaned and sprayed the tanks.

now I use a flashlight down the toilet hole to gauge the black water.

[NewbieRandR]

Thanks, I will give it try with the next dump.

[tobydad]

Usual problem is some toilet paper still in contact with the sensor. No need to worry - very common problem. You can try flushing out the tank with more water next time you use the dump station.

[Bumpyroad]

do a search. black and grey tank sensors seldom are error free.
bumpy