my potterton combi 80 boiler heats water with no problem, however the central heating does not work,
i put the central heating on constant the boiler lights and stays on for 4-5 mins before turning off.
the pressure remains on 1 bar, the pump seems to get rather hot but the radiator shows no signs of heat?

adam, October 2008

Have you got a dripping hot tap which is enough to affect the heating
Could try turning of main stop cock off just in case to prove

a, October 2008