Grohe push button flush not working. Help!!?

None of mine work . Thought it was the way they were installed but now that I see all of your above comments , I think I will have to replace them !!

Lisa
January 2010

Inside the button is a rubber bellows. When you press the button it compresses and sends a burst of air down the tube. Unfortunately the rubber splits and then there is insufficient pressure to inflate the concertina plastic. We've replaced the button once and its failed again exactly the same way eight months later. Poor design and manufacture. I'm looking for a compatible button/system that isn't pneumatic.

Richard
March 2009

Hi Vera, did you fix this? We are also having the same problem - the plunger at the flush mechanism end is not raising sufficiently to allow the full flush to take place. The volume of air and pressure does not seem sufficient to raise it (having blown down the pipe to establish all is well at the "slave cylinder" end....

Neil H
February 2009

I would like to thank Heather for her advice. As suggested, I have checked that the ‘two lips of the diaphragm fall on either side of the edge of the pipe that drops and initiates the flush. I think the problem is that the ‘concertina cylinder’, fitted at the end of the plastic tube, does not increase in height sufficiently to push down the pipe as far down as it is necessary. In other words, the amount of air injected through the plastic tube by pressing the push button is insufficient. How can I correct this?

Vera
January 2009

Hi Vera
No that didn't work.
We were supplied with a spare handle. This has now been fitted and seems to be working.

Heather
January 2009

There is two little lips on the concertina, going to the diaphram - have one lip either side of the open end of pipe that drops down to make it flush. Hopefully this will remedy the cause.
My husband has just mended (I hope) ours, after having weeks of pushing the button many times before it flushed.
Hope you understand, I am not a plumber.

Heather
January 2009