Sime Halstead 30/90 TRIO - something is preventing the burners from firing ?
How to increase water pressure in SIME format 34 boiler?
how can i fix my sime 80c combi ?
Sime Halstead Trio 30/90 - Main Burners are taking too long to fire up?
sime boiler super format 100 keeps cutting out/please help?
got heating but no hot water ?