Recent content by robraw

No, it has never been descaled. Is it a straightforward job? Where do you put the chemical in?

I have noticed that I can get hot water to the radiators to a point and then the noise starts and the flames go out only leaving the pilot light on. Could this be a temperature sensor? as I had replaced one last year due to low heat to the radiators. The buzzing noise seems to be coming from the...

It seems I have hot water but no heat to the radiators now.

I have a ferroli optima 700 and there's a sort loud buzzing noise coming from the area of the modulating regulator gas valve or operator gas valve. It started shortly after switching the electric power off from the boiler and then trying to run the hot water and I forgot to switch the power back...