We may have found other answers which could help you.
Click here for Plumbing Repair Leak
Replacement of bellows in Grohe air button?
Short burst of water entering cistern ?
Grohe 42181 toilet filler valve leaking?
GroheEAU2 Dual flush cistern. The large flush button keeps breaking off?
Grohe seals 14.11.30 4 DAL?
grohe toilet cistern leasks ?