How to increase water pressure in SIME format 34 boiler?
how do i know the time is right on my boiler?
i dont know how to higher the pressure on my sime boiler?
how do I fix my combi boiler, SIME FORMAT 80E?
How can I fix my Sime Ecomfort boiler?
how can i fix my sime boiler 80c ?
Sime Format 100c 6yrs old?
got heating but no hot water ?
My sime super 90 has developed a dely in igniting?
what to buy?
sime boiler super format 100 keeps cutting out/please help?
how can i fix my sime 80c combi ?