hi our boilers pressure keeps rising when switched off to over 2 when its set at one the day before we check it next morning and its at 2 we have to take some water from a radiator to bring it back down to 1 then it creeps up again to over 2 can some one help us solve this thanks

marjarie, June 2010

check filling loop letting by, disconnect flexy pipe and see water drips from shut of valve even if closed.

Or if there is plate DHW plate heatexchanger is in the boiler than is leaking to secondory circuit

k, June 2010