While you wait for answers, we may have found some information which could help you.
Click here for Boiler Home Heating Gas Fire
Glow Worm Fuel Saver F not working properly ?
Why is my upstairs heating always on?
boiler internal fuse keep blowing out!?
Replacing LP112 Programmer?
What does F43 error message mean on Glow Worm 24/30cx?
loud bang when boiler fires up, fault code F1 if it fails to fire?