how can i fix a sime 80 friendly combi boiler?
Heating timer?
how do I fix my combi boiler, SIME FORMAT 80E?
how do i know the time is right on my boiler?
boiler?
i dont know how to higher the pressure on my sime boiler?
How to increase water pressure in SIME format 34 boiler?
sime boiler?
how can i fix my sime boiler 80c ?
Sime boiler?
My sime super 90 has developed a dely in igniting?
sime boiler super format 100 keeps cutting out/please help?