Water – How to fix a wall-mounted toilet that keeps running

toiletwater

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 itself, so this can be 'anything' I suppose.

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

Best Answer

We had a similar problem with our Duravit toilet. We followed the instructions above, and after pulling out both the intake water controller portion, as well as the flush control, he didn't find any calcium build-up: just some rust stains. enter image description here As a final check, my husband reached down into the toilet tank and felt something stuck in the bottom stopper valve. He felt what he thought was a broken piece of rubber, and after tugging on it with some force, he pulled the foreign object out in his hand from the access hole in the wall, and found a perfectly intact, but dead scorpion![enter image description here]2 It must have died just that morning when the toilet started running. Luckily he wasn't stung.