Just How Do RV Black Water Tank Sensors Work?
RV tank that is holding are small steel nubs which are screwed into the sidewall of this tank. Whenever water in the tank strikes the steel nub, it completes the electric circuit and turns on the colored lights based in your RV monitoring panel. The sensors are positioned at equal periods into the black colored water tank like 1/3, 2/3, and complete.
Often, debris gets caught or develops up in the final end of a sensor within the holding tank.