Grohe Concealed Toilet Wont Flush

[SondreheienNO]

Hello,
I have the Grohe and show the issue in this video.

The issue is that it suddenly stopped flushing out of nowhere the pneumatic button raises some mechanic inside but theres no water coming out.
I were 4 days away from home and when i came back this suddenly happened and its not happened gradually.

Anyone know if this is something that i can fix myself or do i need to contact a plumber or something.

 

[Ben-gee]

The mechanism seems to be working fine.

It’s a bit hard to see but I don’t think there is any water in the cistern?

 

[TomasT]

Happened to me today I removed the cover, disconnected the flushing unit, unsrewed everything, cleaned everything and installed back again. Works like a charm