Grey/Black tank sensor

[Neng]

2018 Jayco 27BHS, first day of camping and both kids took a bath, only a few inches of water. Check gauge and say it’s 3/4 full, I know that’s wrong. What are some signs of a overflow tank? Will water leak underneath the tub into the floor?

[oldmanAZ]

In ours...
When the gray tank is full, there will be standing water in the bottom of the shower.
I can see directly into the black tank when the valve is held open (city water off and fresh water pump off) and see how full it is.

[DonaandDon]

Notorious false censoring (readings) here....

Ours light up too soon for the 2/3 - 3/4 mark. Although note worthy of water usage, still plenty of room after that light.

The true understanding of when your light will show at what level? Measure by bucket. I think you will find like me that the 2/3rs or 3/4s is way early in the filling process.

[Chet & Marie]

Originally Posted by oldmanAZ

In ours...
When the gray tank is full, there will be standing water in the bottom of the shower.
I can see directly into the black tank when the valve is held open (city water off and fresh water pump off) and see how full it is.

Same deal here but the grey tank is the problem. Am going to try diet of pine sol (two cups in 20 gallon grey tank) and see if that cleans the sensors. The black tank works fine.