how can i fix a sime 80 friendly combi boiler?
i dont know how to higher the pressure on my sime boiler?
sime boiler super format 100 keeps cutting out/please help?
My sime super 90 has developed a delay in igniting?
how do i know the time is right on my boiler?
How to fix fault with my Sime 30HE boiler keeps cutting out?