While you wait for answers, we may have found some information which could help you.
Click here for Boiler Heating Fault
My radiators not heating up?
Glow worm flexicom 30cx auto air vent - how do I replace?
Central heating not working?
BMU error code?
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 ?