While you wait for answers, we may have found some information which could help you.
Click here for Flush Stopped Pump
Grohe push button toilet attached to saniflow ?
Have I been charged way to much for having a loo mended?
how do I change the bellows in the push button unit for the grohe cistern?
Grohe 42181 toilet filler valve leaking?
GroheEAU2 Dual flush cistern. The large flush button keeps breaking off?
Short burst of water entering cistern ?