Black tank roof vent leaking black water
We have a 2013 Fleetwood, Bounder, model 35K with a vacu-flush system, two toilets.
When the black tank was full, it would of course display full level reading. It would also, not allow the Vaccu-flush to operate showing a RED light at the indicator boxes in both bathrooms. This would clear once I emptied both tanks.
However, lately, the Vacu-flush works fine. But, the RED light does not show when the tank is full. Also, a small amount of black water came out of the roof vent. Of course, we emptied the black tank and cleaned up with appropriate fluids.
Has anyone had the same problem with their Bounder and the black tank roof vent releasing black tank water? and or also the Vacu-flush system not displaying a RED light indicating the Black Tank is full?
Is there a valve I need to replace? A switch to replace?
Now, the Vacu-flush pump is working fine. It is brand new; replaced about a year ago. There are no leaks at the pump, nor the toilets, nor the inside under the sink vents. No leaks at the black tank release valve to empty both the gray and black. Everything is working perfectly. Except what I described above with black water coming out from the roof vent.
Please, answer if this has occurred to your motorhome Vacu-Flush system. Especifically, the Fleetwood, Bounder series or one with similar system.
I appreciate your time and knowledge.