20 Most Recent Duravit 111335001 Geberit In Wall Carrier for Wall Mounted Toilet Questions & Answers

You may need to change your diaphram in your filler unit

You need to shorten the flush time of the flush valve.

All toilet bowls have a preset water level determined buy the design of the internal s-trap and can not be change. However if the water level in the tank is not as high as it should be this will affect the water put into the bowel as the bowel in refilled by the flush valve and if it is set to stop before it get filled to the proper setting the bowl water level may be low.
A quick test is to see if the water level in the tank is up to the line in the tank most all toilet tanks have a line either stenciled or marked with a indentation in the porcelain. Another way is to mark the level in the bowel with tape or a marker then pour water slowly into the bowel not fast enough to flush it wait to see if it stays higher then the mark you made or settles back to that level.

Shut off main water supply
shut off water value going to your wall mounted toilet.
look under your apartment or the room ajoining the wall unit.
look for hidden wall space above unit

Depends on the model you have. Try the back of the unit or under the supply panel on the left side.

http://productcatalog.plumbingonline.ca/DocServer/DSAnonDownloadServlet?action=download&type=product-artifacts&key=DSde3ef6eb-79c9-4905-98e4-5280331b4f33 https://plumbingonline.ca/products/duravit-0929100005 See links above.

Contact Duravit or its distributor to request the manual.

Are you sure the flapper is dropping back down? Theflush handle may be sticking and holding the flapper valve up.

Try this link: https://www.happyisclean.com/Products-Duravit_Parts.html

Remove and clean the flush valve and the flush valve seat(it is the flap that opens up to allow water to flush the toilet). Once the edges of the valve and the seat are cleaned, possibly with "0000" grit bulldog steel wool, it should not leak anymore. To make sure it is not leaking, once tank has refilled completely, put some food die in the tank. If, after 10-15 minutes, the water in the toilet bowl is colored, you have a leak from the flush valve. Replacing the flush valve is very easy - just bring the old one with you to the hardware/plumbing store and ask for a replacement. Blessings and good luck!!