"do not flush" light is on but waste tank is empty

[kellyr66]

I have a Monterey 245CR with a Jabsco manual pump head that discharges into a 20 gallon waste tank. Last week the head started acting up. After pumping out of the bowl, waste water would reappear in the bowl. The bowl wouldn't fill all the way back up but the more the toilet was used the higher the bowl water would get.

I took the vent pipe off the waste tank and confirmed it's not a venting issue. I disconnected the pump from the toilet and ran a snake all the way to the waste tank. I also replaced the joker valve. Now the toilet seems to be working fine. Either I had a blockage in the line or the joker valve was bad or a combination of the two.

My only issue now is that the "do not flush" light is on. I thought this light only came on when the waste tank was full. I see there are a few wires that go into the top of the waste tank. I'm assuming that this is what determines whether the do not flush light is on or not. Any information on this sensor, how it works, how to replace it, etc would be helpfull.

 

[Ghost]

It might just have a couple electrodes, in which case there is some kind of **** connecting them. Try giving it a good rinse.

 

[PascalG]

which one do you have ? I have a tankwatch with 3 lights (empty, half, full) which was acting up last year. it was easy to remove and clean up, that tankwatch use floats with magnetic sensors.

it's not as bad it way seem... certainly not worst than dealing with diapers

 

[kellyr66]

Thanks for the comments! It is a single light that says "do not flush". I also suspected that s**t is stuck to the sensor causing the false reading. How do you pull the electrodes out? I tried pulling the plastic thing that the wires are attached to at the top of the tank. It pulled up around 1 inch but no farther. I was afraid to pull hard and break it. I have no documentation on it. Is there some special technique for removing the sensor /electrodes from the tank?