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Hi Tony WelL, I have got the heating working again. I went back over everything that you had mentioned about what the problem could be. It was an isolation valve to the boiler that I had left closed, and I can not remember shutting it off. It just goes to show that one must check every...

Too late I'm afraid. I did drain the system, and refilled slowely to 1.5 bar. The heating system still does not work. What happens is that the c/h burner ignites sometimes, the temperature goes up to about 50, there is LOTS of banging in the boiler and the pilet light goes out, The other...

Hi Tony I did not close any of the isolating valves, but drained the system through a radiater drain plug, so the system was dry. I then filled the system up to 1 bar, but maybe I did it too fast. I will drain the system again and fill it slowly to 1.5 bar. I will let you know the result...

Hi thank you for the reply. The boiler is a SIME super 90 plus. why I think that it might be air in the system is that the hot water is ok but the c/h does not fire up, as if there is an airlock, but i am probale wronge.

I can get hot water but no centeral heating. I have bled all the radiaters.The water pressure is 1 bar The pump sounds as if it is turning, and it gets hot with the temperature rising on the dial, but the radiaters stay cold. The heating worked fine in the winter, but I have just drained the...