Originally Posted by mrnoyb
I had the same issue with my White Hawk after the 2nd trip. There's no problem with the systems, just the sensors. My Swift SLX had this issue also.
The fresh water tank is full when it overflows. Gey water is full when water backs up in sink or shower. Sewer is full when you can see it when you flush. If you don't want the tanks to fill, empty them whenever you want. The White Hawks have black tank flushes so you can clean the tank of debris after each dump.
I've stopped worrying about the monitor panel.
Yep, when the grey water backs up into the bath tub I know the tank is full.
I cannot tell from looking into my toilet. It always looks like it is full.