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Biasi boiler -hot water problem

Joined
26 May 2010
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Location
London
Country
United Kingdom
Hi i have a biasi boiler and the hot water in the shower is not working properly. I have to put on the taps in the sink first and then it will heat up for a minute and then goes cold. The other bathroom shower works fine. Help
 
It sounds as if you have a 24S with a failing diverter valve if it takes more than 2.5 li/min to turn the boiler on.

You may also have a blocked plate HE if the gauge goes much higher than about 65° on hot water delivery.

Tony
 

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