Wrong Black Water Level

nomad297 wrote:
Your tank gauges will never be accurate. Get used to it. It doesn't take much to get electrical continuity between each sensor -- it only needs to be damp -- you don't need a solid to get continuity. As I said; get used to it because there is no solution. Nothing is wrong with your wiring. Stop worrying.

Bruce

I agree if you have factory cheap probes. However, replacing those with Horst miracle probes and good flushing practices you can end of with reliable accurate probes. We have the horst probes on our tanks, flush them well when dumping, and I can count on them reading correctly.

In the OP case, I suspect that the tank needs a good cleaning, there is TP or gunk still left in the tank.

Before I knew you could buy one, I made myself a flush wand to rinse the tank by going down the toilet. We had our HTT for 7 years and the black tank sensors still worked.
The new TT has a tank flush but I still need to use the toilet wand to get all the nasty stuff out. I'm lucky - I can dump at home using the sewer cleanout in the front yard.

I've never had the problem that the OP speaks of !

sure the accuracy of the typical (OE) gauge leaves lots to be desired (w/ only 4 levels) but it shouldn't read FULL after a single use (unless the tank is the size of a coffee can).

lots of folks abandon the minimalistic (typical OE) monitoring systems and retro fit with SeeLevel Gauges (using the original/OE wiring)

X2 to nomad297

Doug

Your tank gauges will never be accurate. Get used to it. It doesn't take much to get electrical continuity between each sensor -- it only needs to be damp -- you don't need a solid to get continuity. As I said; get used to it because there is no solution. Nothing is wrong with your wiring. Stop worrying.

Bruce

but it shows empty before theres any use ? how long has this been going on ?
do you flush/rinse the tanks well after you dump them ?

I've seen cases where debris (think paper) gets hung up on the sensor inside the tank & gives false readings.

if the tank monitor reads full (when the tank is really empty/rinsed and clean) then you might have a wiring issue - the wires to the tank sensors are pretty delicate and theyre exposed to the elements - check the tank for wiring issues (you could have a wire broken or shorted).