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Grohe push button flush not working. Please help?

I have a push button flush toilet with the cistern concealed in a cabinet. The air button is no longer flushing the toilet. As an initial test I have released the plastic tube from the push button and flushed the toilet by blowing air through it. By this I have confirmed that plastic tube, together with the ‘concertina’ diaphragm at the end, are air tight. Just in case, I have cut the tips of the plastic tube, widen slightly by the fitting. After fixing the tube again I could not see much improvement.
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
GroheD.I.Y, ToiletsPush Working Help
If the pneumatic push button stops working it is probably because you have an air leak somewhere. This could be in the push button bellows, the air tube seal or the clear flush valve bellows. It is better to know which part is leaking before ordering the spare part.
If you can get access to the top of the cistern lift up the 'cradle unit' which holds the clear plastic bellows (it slides upwards on grooves in the cistern) and extract the cradle, bellows, valve, tubing and push button bellows as one unit. Hold it underwater in a bucket, press the push button bellows and discover where it is leaking.
Then order the correct part (Google 'grohe push button') and refit.

Jamie
May 2020
I have the same problem. Syringe does not work.

juliana
September 2014
found a new site www.showerspares.com
complete button 38488
bellows inside button 113219
air tube 43505
clear bellows 43506
black rubber union 43507

gary
January 2013
I have a similar problem. I have tried blowing down the tube, but this does not make it flush. So I'm assuming it's not the button itself, but probably a slight leak in the bellows bit at the other end. Any thoughts? It's very hard to get at unfortunately. Are there any obvious things to try first, or bits to try sealing up?

Reluctant plumber
April 2012
Jaroy, thankyou very much for the syringe tips... works extremely well.
Where can you get the bellows alone?

Thanks

Arlo
December 2009
I phoned Grohe and ,most surprisingly they sent me a new bellows and button FREE

George
November 2009
grohe adigio air buutton is what u need bentleys manchester 0161 6108003they should have them in stock i replace them all the time in a block in town where i work this is the right tel no thanks

woody
July 2009
grohe adigio air buutton is what u need bentleys manchester 0161 6108033 they should have thm in stock i replace them all the time in a block in town where i work

woody
July 2009
Replacing the air button is the proper way to fix it although getting the part can be difficult. Ordering 2 is a good idea as having a spare to hand gets you "on the move " when it goes the next time.A quick tempoary fix is to get a infant medicine syringe to deliver the "puff" to the flushing mechanism and get things "going".The syringe plunger must be retracted to allow the cistern to refill .

jaroy
June 2009
Replacing the air button is the proper way to fix it although getting the part can be difficult. Ordering 2 is a good idea as having a spare to hand gets you "on the move " when it goes the next time.A quick tempoary fix is to get a infant medicine syringe to deliver the "puff" to the flushing mechanism and get things "going" while you are waiting for the replacement parts to arrive.The syringe plunger must be retracted to allow the cistern to refill .

jaroy
June 2009
Where can you get a new bellows my local shop want to sell the complete button

noel wyse
May 2009
where can you get the bellows

mcdingle
January 2009
Jules response was correct and gratefully received. The bellows inside the button had to be replaced. It was possible to obtain a replacement without having to change the entire push button system.

Vera
January 2009
It sounds as if your push button needs replacing. It probably has a hole in the bellows inside it, causing air to escape from it when pushed. This has the effect of giving insufficient air through the tube to the concertina cylinder.

Jules
January 2009

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