The pressure keeps dropping on my boiler,i cannot find any obvious leeks on the system.Also the dhw takes ages to heat up unless the central heating is on.Are the two problems related?. Any ideas please.

Bongobob, July 2010

have you checked your pressure relief valve, a 15mm pipe comes off it,and go,es through an outside wall check that its not discharging water, other than that the leak could be under the floor, regarding your hot water problem ,the diaphram in your diverter valve could have a hole in it, its made of rubber and could of perished

ged, July 2010