The problem is most likely the disc is worn. So you will need a new seal kit and Disc.
Richard - Service Engineer, February 2011
I have a Waterside mc250 with the digital display and for the last two weeks its has been eating salt tablets and filling the salt tank up with water to a point where water is pouring out of the overflow. Any ideas?
Lambo, August 2010
Why don't you choose something else for yourself? Like in example best water conditioner available on the net like Scalewatcher. More info you can find at: http://www.scalewatcher.co.uk
alice, January 2010
Have you got the Electronic valve with the digital display or the older style with a black timer? How old is the machine?