just change the water to water heat exchanger!!!!!!!!!!!!!!!!! 
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Worcester 28CDi combi boiler over pressurising
- Thread starter djavery
- Start date
We have all told you that its most likely to be the plate leaking but it was GMG who told you first and within 7 minutes of asking!
I also suggested you change the diverter valve at the same time if you are going to try to do it yourself.
Tony
DIYnot Local
Staff member
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