We may have found other answers which could help you.
Click here for Glow Worm Flow HelpMy central heating is not working?
Home heating systems?
I have moved into a flat am dissabled carnt get heating on unit flashing F1?
GS 24i junior boiler timer broken?
I have a 30cx glowwarm that is showing F4 as fault.I have no hot water?
Glow worm flexicom 30cx auto air vent - how do I replace?