Grohe concealed cistern vibration?
I have had the same problem as most people with the 'constant trickle' and Grohe kindly sent a plumber who replaced the blistered seal! Now it vibrates as it refills, which it did when it was first fitted! The plumber who fitted it then did something to stop this... any ideas? Have found a misterious broken metal ring in the bottom of the cistern????
Liz Benson, August 2010
