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Ask your QuestionThe cistern has been leaking into the pan constantly for ages, so today I’ve replaced the fill valve, the doughnut/ coupling washer and the flush valve. All working fine, except there is still a steady flow of water leaking into the pan as it was before. It’s driving me bonkers!! So the cistern leaks water out, then refills itself, then leaks, then refills...etc. Any ideas?
Asked by Craig on 2nd Mar 2021Best Answer
"Flush valve washer is not tight and will leak water to the toilet pan and this is common with close coupled toilet. As the water level gets low, it triggers the fill valve to refill the toilet cistern again only to the maximum level on a default setting.
I hope it helps"
"Hi there pull the flush valve out should just twist off and clean the washer."
Answered on 4th Mar 2021 - Member since Sep 2019 - report"You have to adjust the fill valve to stop the water from going down the overflow."
Answered on 4th Mar 2021 - Member since Aug 2019 - report"Hi , sounds like the overflow is just doing its job. Check the setting on the flush valve ."
Answered on 4th Mar 2021 - Member since Aug 2019 - report"It's the siphon mechanism that allows the water to flow into the pan the doughnut has no bearing on this. Alot of the time the problem persists if there is small debris or scale flakes within the cistern that can sit inbetween the siphon flange not allowing it to seal!"
Answered on 4th Mar 2021 - Member since Jan 2021 - report"Everything you have replaced should have stopped the leak, maybe you haven’t done something right, my suggestion is to get a plumber in"
Answered on 5th Mar 2021 - Member since Oct 2020 - report
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