loud bang when boiler fires up, fault code F1 if it fails to fire?
What does F43 error message mean on Glow Worm 24/30cx?
Glow Worm 35f Fuel saver won't light main burn?
Why are my radiators are not heating?
how can I fix my old glow worm central heating boiler model 65-80?
why is radiators hot when only water is on..HELP?