i dont know how to higher the pressure on my sime boiler?
how do I fix my combi boiler, SIME FORMAT 80E?
boiler?
How to increase water pressure in SIME format 34 boiler?
how can i fix my sime 80c combi ?
cant fill up sime boiler ?
How to fix fault with my Sime 30HE boiler keeps cutting out?
no hot water?
My sime super 90 has developed a delay in igniting?