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Our wall-mounted toilet keeps running. It is easy to "stop" by removing the plate with the push-buttons and pressing down the cylinder (valve?) inside, but I'd like to find an actual solution :)

It's hard-ish to find out what the issue is for me as I know nothing about these things, and it's inside the wall: hard to just take apart and look around.

The toilet is a 'Duravit', but I couldn't find any specs on the flushing mechanism. I am working on the presumptions these to must be compatible, but are not necessarily sold as a kit, so the flushing mechanism can be 'anything' within a range?

Any idea how to fix it, or what I can check? Or just call a professional?

Now for some visual clarification:

First the button. When pressing it halfway it doesn't keep on running, but it's not a good flush like that. Pressing it all the way makes it stuck in 'open' or so it seems. button front

Inside of the button-set (seems like air-pressure makes it work?) the buttons

So this blue-topped cylinder keeps stuck in the 'up' position

inside of the flushing mechanism

About to press it down to make it stop flushing. An easy fix, but annoying obviously

stuck flushing

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1 Answer 1

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There were 2 (or maybe 3) things I needed to know:

  1. (easy) the fact that these things can be disassembled easily
  2. (harder) how the flushing actually works

    and the third, the cause in this case:

  3. calcium is evil

So after a friendly plumber who 'refused' to come by for such a trivial matter had proposed I'd take apart the thing, find something that was wrong, fix that, and assemble it first helped me get going, I removed a lot of parts:

  1. front plate (see above)
  2. Screws and the 2 platic rectangles keeping the front in place (see above)
  3. The water 'hose' (iron thing, again, see above)
  4. I removed the piece that starts/stops water flow with the floater (was on the left, no picuture) and gently set it down inside.
  5. The plastic base was the trickiest to remove: one side had a mechanism, the other side neede to slide up (but needed some force). See picture below.

Removeing the base

Now that we finally have some picture, this is what happens: The blue part on the big cilinder (also featured above) is the one that stops the flow of water, but the smaller (white) one is the one that pushes it up when you press the button (airpressure). That one was the one that didn't come down again, due to caclium buildup. Cleaning this fixed it! see picture of the problem before cleaning it.

enter image description here

Strange that a relalitvely new toilet (house is from 2008) will have this as a problem, so I suppose this will come back sometimes ;(

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