Geberit AquaClean 8000plus Care toilet Constant running/dripping

[Mooncheese]

Hi guys n gals. I own a Geberit AquaClean 8000plus Care toilet (with cistern - non wall hung) its been fantastic!! - Until recently.. It has developed a constant drip/run in to the toilet pan. I have looked on YouTube etc and seen people clean the silicone rubber O ring by removing the flush mechanism etc and cleaning it... also they checked that the overflow wasnt leaking etc... mine seems pretty dry and i even wrapped it in PTFE tape just to make sure and pressed it back in the hole.(I am almost 100% it isn't seeping through there) NOW I took the cistern cover off to find a space age looking inners and room nowhere near enough to get my hands etc in there to do anything!! What little room i could see I couldn't figure out how the flush would remove so :

1 - Does anyone know how to remove the flush mech in these toilets? 2 - How do you go about it?

ANY help would be appreciated as its driving me insane knowing its doing it.

Thank you!!!

[Brian Gaff]

Overflow runs into pan, level detection set too high, move it lower? Brian

[John Rumm]

You can download the installation manual here:

Ultimately once you get past the cosmetic panels and covers etc, it looks not dissimilar from a traditional flush pipe connected (i.e. not a close coupled) design. A couple of retaining bolts to hold the cistern to the pan, and what looks like a universal/compression fitting to connect the flush pipe. (plus lots of other fixings to hold it to the frame)

[Brian Gaff]

The bottom line is that it is either overflowing or its got a leakycyphon somewhere. Brian