However, this week, I started up my central heating, and noticed that one of my radiators was cooler at the top than bottom, so just bled it a bit to get the heat even. Thought no more of it. Then a couple of days later, I start up the heating, and nothing. It doesn't light, and I can't get hot water either when I turn on my taps. At this point I also noticed that the water pressure level had dropped right off, so I added more water in to get pressure back up to 1 bar.
Then realised that the reason I couldn't get it to light was because the cut-off switch had popped up, so pressed that down, and then everything seemed okay.
But now whenever I try to start up the heating, within a couple of minutes, the pump's making quite a noise, and then the cut-out switch trips again. However, it does appear that I can get hot water out of the taps with no problem.
Am I right in thinking that the pump is only used for the radiator side of the system, and that's why I don't have any problem with the taps? And would the fact that the pressure dropped right off be the reason why all this has happened. I have now checked all my radiators, and as far as I am aware, I don't have any more air in the system.
Is this the kind of problem I can sort out myself, or is it likely that I'll need to get an engineer in? Thanks for any help that anyone can give me...