i dont know how to higher the pressure on my sime boiler?
how can i fix my central heating boiler?
Overflow leak?
Sime swithes itself off/on all the time?
how do I fix my combi boiler, SIME FORMAT 80E?
cant fill up sime boiler ?
Heating timer?
manual for sime super 10 year old combi boiler?
sime boiler super format 100 keeps cutting out/please help?