Originally Posted by indigoRV
Thx for the info. I did find the parts list but electrical is hard to come by. What powers the macerator pump, 115 vac, or the same 12 vdc? So if the water is not working, I can always put water in the bowl, but what about the macerator pump? I do not have any indications of black water tank full on my monitors. I do have another toilet that is working, so I do not think it is the tank full safety feature. I wish I knew if I had that feature. There is so much to learn on this rig. I feel like a CHENG again on a ship.
I found the wiring, at least the power to toilet, is coming from you G6A panel. On my coach is is breaker B1 and B9 for the two toilets. If your coach is different it will be labeled under the Breaker section on the G6A panel. I assume you checked these when you said you didn't have any breakers tripped. Since it is coming from this source we are pretty safe assuming that it is 12v.
Before doing anything I would reset the power to the panel by turning off the two main power switches by the door and then turn them back on. Sometimes all you need is a good old fashion reboot.
If this doesn't resolve anything, the next thing I would try is removing the cover of the toilet and see if any of the wires are visible there. If so get a volt meter and see if you have power. If you do have power then there is something wrong with the toilet. If you do not have power there and no breakers are tripped then the problem is between the G6A panel and the toilet. In that case I'd pull the screws out of the G6A panel and check for a loose connection on the back of the breaker.
While you are in the connections to the toilet see if you can disconnect the tank sensor line. There is a possibility that it is giving you a false tank full signal. Since one toilet is still working this seems like a long shot but what do you have to lose by checking.
If all else fails, I would jumper a 12 volt wire to the toilet and see if it flushes.
I hope I haven't confused you too much.