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