While you wait for answers, we may have found some information which could help you.
Click here for Heating Boiler Fuelsaver
Glow worm 100E small burner flame, now hot water?
why is radiators hot when only water is on..HELP?
Glow worm 45/60 not firing up?
Why are my radiators are not heating?
loud bang when boiler fires up, fault code F1 if it fails to fire?
Replacing LP112 Programmer?