Biasi M90 Combi boiler fan issue

Hi All,

I have a Biasi M90 combi boiler, which is nearly four years old. I have a problem with my boiler that is why I am here to get some suggestions. The fan and pilot light of the boiler do not seem to be working properly. Apart from this, I can hear the clear click as I turn on the tap of hot water & a clear click after turning off the tap. What could be the reason behind it?

Please give your valuable suggestions


Hi, try bleeding all the air from your boiler. Afterward, run heating and hot water at the same time. You have to bleed the central heating pump as well. Another possibility is to have air, especially in a pilot after switching it off. It is better to call a boiler engineer for detailed inspection of your boiler.