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?
fitting thermostat?
GS 24i junior boiler timer broken?
Central heating not working?
Home heating systems?
Glow worm flexicom 30cx auto air vent - how do I replace?
My radiators not heating up?
My central heating is not working?
BMU error code?
How to fix glow worm 18 hxi ?
Which way to turn slotted screw to adjust water pressure up on a glow worm ?
I have moved into a flat am dissabled carnt get heating on unit flashing F1?