We may have found other answers which could help you.
Click here for Central Heating Gas Valve Pilot Light
I have a 30cx glowwarm that is showing F4 as fault.I have no hot water?
GS 24i junior boiler timer broken?
Central heating not working?
How to fix glow worm 18 hxi ?
Glow worm flexicom 30cx auto air vent - how do I replace?
fitting thermostat?