We may have found other answers which could help you.
Success
Message
I have a 30cx glowwarm that is showing F4 as fault.I have no hot water?
GS 24i junior boiler timer broken?
fitting thermostat?
Central heating not working?
My radiators not heating up?
How to fix glow worm 18 hxi ?
I have moved into a flat am dissabled carnt get heating on unit flashing F1?
Glow worm flexicom 30cx auto air vent - how do I replace?
Which way to turn slotted screw to adjust water pressure up on a glow worm ?
BMU error code?
My central heating is not working?
Home heating systems?