i dont know how to higher the pressure on my sime boiler?
How can I fix my Sime Ecomfort boiler?
Sime Format 100c 6yrs old?
Sime swithes itself off/on all the time?
sime boiler super format 100 keeps cutting out/please help?
Sime thermostat?
cant fill up sime boiler ?
heating system?
Sime Halstead Trio 30/90 - Main Burners are taking too long to fire up?