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I have checked all the valves are open. There was a small amount of air in one of the upstairs rads. Tried to fire it again it came on initially for about 20 secs then the light went off. Thanks for your help though (n)

Simod the temperature on the display started at 65 after pushing the chimney sweep button. It then went up to 71. Then counting down from u9 to u0. Then starts again at 99 counting down to 93 at the end of the process.

Daniel curry the upstairs have microbore pipe and the downstairs standard. Some rads are newer than others, but is probably fairly old.

Hi it is the 30cdi combi

Hi both. Gigz the green light only came on when i turned the system on and pressed the bottom left button, it came on for a while but went off. When i just try and fire the heating up the green light does not come on. Yes hertsboilers it is that model.

Hello all new to these forums :), was hoping for some help in figuring out why my central heating isn't working. My boiler is heating the water without any problems but when I try and turn the central heating on it seems like it is going to turn on making all the right noises as usual but the...