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