We had our sottini dual flush loo fixed a couple of weeks ago. Water was running all the time inside. teh plumber fitted a new unit (like the old ballcock thing) But ever since it keeps pulling water in from the mains every 15 mins or so with some gusto. We have very high water pressure and this goes on day and night and you can hear it all over the house. It is driving us mad. Help

sleepless of oxford, February 2009

If you paid a plumber to fit a new one then get him back. If you mess with it he will blame you if you find out he's not fitted the correct valve.
If he won't return and fix for free then tell him you are contacting watchdog and builders from hell on TV
My guess is low pressure valve on high pressure system. You could try reducing the water pressure

nobby, February 2009