Tank display issue

[benevolus2]

My tank display monitor is the type that has little led lights showing the various levels. Just last week after filling up my fresh water tank I noticed that the display read empty. As the weekend went on with water use and many refills, it stills reads empty despite being full.
Does anybody have some insight on this?
Thanks

[benevolus2]

Dutch_12078 wrote:
I hope you're aware that leaving the black tank valve open can result in a problematic buildup of solids when there's not enough water flow to carry them away.

Yes I do. However to be honest I don't use my toilet for solid waste.
Thank you anyway sir.

[Dutch_12078]

I hope you're aware that leaving the black tank valve open can result in a problematic buildup of solids when there's not enough water flow to carry them away.

[benevolus2]

Thanks guys. I don't know if black and grey work as I am hooked up to a permanent septic on my property so everything just flows out.
I'm way out of warranty. My TT is 2005. Probably is the sensors, so I'll live with it. No Calgon in my fresh water tank!
Have a nice weekend.

[FrankShore]

Don't put Calgon in the fresh water tank!

[midnightsadie]

the sensors are in the tanks,they get limed up, and oxidized, we always but calgon in the tanks gray and poo tanks, even clean there not to be trusted ,

[FrankShore]

More often than not, your set of 3 tank sensors have failed. This can be corrected (at a large cost) by having the dealership re-drill the tanks and put in new sensors.

Are your gray and black tanks showing correctly?

If you're still under warranty, this could go to the dealership.