concealed flush toilet

[alangreenhalgh]

I have a Grohe push button concealed toilet syphon which is about three years old.
To make the toilet flush you have to hold the buttons in or they switch the water flow off in less than 2 seconds.
Does anyone know what's causing this problem?

[stoneyboy]

alangreenhalgh,
Its either a leak in the pneumatic pipe from the push button of the push button is packing up. Remove the access panel and the pipe from the push button, blow down the pipe and see if the cistern flushes OK.
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