I have a Volkera Excell 8E combi boiler. The central heating works fine but there is no hot water. I have checked the pressure and that it is not over heating. I have switch to 0 for 12 hours and still no luck.

The boiler is reg serviced, last being 14 months ago.

do you know what the problem may be and how to fix it?

Daniel Arrundale, January 2010

where is that located

david richardson, January 2010

my pressure had dropped and have no hot water topped my pressur up and still no hot water

david richardson, January 2010

dhw diaphragm is probably burst. get your service engineer in to confirm fault & replace it if required.

Ian, January 2010