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