While you wait for answers, we may have found some information which could help you.
Click here for Heating Fault Glow Worm
Why is my upstairs heating always on?
Glow worm 100E small burner flame, now hot water?
Glow worm 45/60 not firing up?
What does F43 error message mean on Glow Worm 24/30cx?
Replacing LP112 Programmer?
loud bang when boiler fires up, fault code F1 if it fails to fire?