Any advice welcomed....
A week ago, my boiler stopped working because of faulty pressure switch so disconnected and boiler then fired up.
Since then, the pressure has been moving between 0.5 and 3.5 when the heating is on.
Just came home this evening and the heating is not working - although the hot water comes on fine.
Pressure has gone into the red so drained.
Is it possible that I have a leak although the pressure does go up and down without any drainage.

paulk, December 2008

Thanks Iain.

I am thinking about replacing this boiler as it's about 12 years old and Potterton Puma's are not that great.

I have been given a Worcester Bosch 28si which has hardly been used.
I understand you can't fit a non-condenser combi due to regulation change a couple of years ago.
Is it expensive to convert this boiler to a condenser ?

Thanks

Paulk, December 2008

expansion vessel

iain, December 2008