Geberit Duel Push Button for Cisterns not working

[Michael512]

Hi, my Geberit duel push button has stopped flushing the toilet. When either button is pressed a small amount of water is released but not enough to flush the toilet. I have removed the plate holding the unit and pulled the 2 plastic tubes away. By blowing into the tubes the system flushes so I think it is the push button unit itself. Does the complete unit need to be replaced or can it be opened and checked. Tks

 

[Deleted member 120897]

Could it be that the tubes are kinked when the plate is in position?

 

[Michael512]

Could it be that the tubes are kinked when the plate is in position?

Dont think so. I can blow into one tube and it easily flushes. When I attach end to the Actuator, seems not enough pressure to fully lift the valve.

 

[rpm]

Could cut 8mm or so off the tubes if they are slighty loose on the spigots of the bellows or replace the whole bellows rather than open it up.

 

[Michael512]

Thanks, I'll replace the pneumatic hose 1st and see if it improves. The actuator does come apart, are you saying that the bellows can be replaced or the whole unit? Pretty sure its not the valve, as I said I can blow through the hose and it activates the valve and flushes.

 

[oz-plumber]

Chances are the bellows are split.
Good chance the bellows are expensive to replace.

-Reason I stopped fixing inwall cisterns, too many arguments with customers over the price of repairs.
Now tell the customers to call manufacturer directly for repairs, can't be bothered with the grief.

 

[rpm]

Thanks, I'll replace the pneumatic hose 1st and see if it improves. The actuator does come apart, are you saying that the bellows can be replaced or the whole unit? Pretty sure its not the valve, as I said I can blow through the hose and it activates the valve and flushes.

No need to replace just cut some off the end of the hose. Yes bellows can be replaced

 

[Michael512]

Chances are the bellows are split.
Good chance the bellows are expensive to replace.

-Reason I stopped fixing inwall cisterns, too many arguments with customers over the price of repairs.
Now tell the customers to call manufacturer directly for repairs, can't be bothered with the grief.

Chances are the bellows are split.
Good chance the bellows are expensive to replace.

-Reason I stopped fixing inwall cisterns, too many arguments with customers over the price of repairs.
Now tell the customers to call manufacturer directly for repairs, can't be bothered with the grief.

 

[Michael512]

Well there

Chances are the bellows are split.
Good chance the bellows are expensive to replace.

-Reason I stopped fixing inwall cisterns, too many arguments with customers over the price of repairs.
Now tell the customers to call manufacturer directly for repairs, can't be bothered with the grief.

Thank Oz, well wold you know the bellows are burst, so its off to find a replacement. Thanks all for your advice.