central heating

[lesfrewin]

hi evewryone
I have a Worcester 240 combi RSF boiler and it is quite old and in the last couple of years I have had acouple of problems. the first was no hot water but that was solved by replacing the diverter valve. Now it is constantly leaking from the overflow (every couple of seconds a drip) and I have been told this could be caused by the water to water heat exchanger but it is an expensive guess to buy this part if wrong. any suggestions?

 

[kevplumb]

whats the system pressure cold

 

[lesfrewin]

thanks for the comments and ive checked the boiler and its been off for about two hours and the pressure is now at 1.3 bar.

 

[kevplumb]

could be expansion vessel need recharging if the pressure is getting to 3 when hot

is prv still dripping

 

[lesfrewin]

hi there Kevplumb
thanks for reply. As i said the pressure cold is 1.3 bar and with central heating on and shower running the pressure only gets up to 2 bar and yes the prv is still dripping. It stops dripping or at least slows down dramatically when there is no demand on boiler but as soon as you switch on the heating it starts and it can be a constant heavy drip. Does that info help.