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loud bang when boiler fires up, fault code F1 if it fails to fire?
Why is my upstairs heating always on?
why is radiators hot when only water is on..HELP?
Glow worm 45/60 not firing up?
Glow worm 100E small burner flame, now hot water?
how can I fix my old glow worm central heating boiler model 65-80?