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my potterton performa 24 the hot water has problem - it comes hot and the?

the hot water comes hot and then cold, hot, cold, hot.

Is heat exchanger or diaphragm or do i need to power flush or need to install hydroflow??

replaced new boiler september 2004

Many thanks
R Madalli
wren madalli, May 2008
mostly this problem relates to a sclaed/sludged dhw heat exchanger and will need replacing.

flushing (and then treating) the system is always a good thing if the water is full of particulates (looks blackened or brown)

T, May 2008
link Click here to see other fixes for Potterton Performa 24.