Which way to turn slotted screw to adjust water pressure up on a glow worm ?
Intermittent boilet fails to fire on heating?
Is it normal that the flame is burning all the time?
I have a 30cx glowwarm that is showing F4 as fault.I have no hot water?
how can i fix my central heating. Glow-worm ultimate?
what causes the sabre he 25 to come on, on its own?
glow worm 24cxi boiler?
Glow worm flexicom 30cx auto air vent - how do I replace?
glow worm 2boiler fires up for 10 to 20 mins then shuts off whats wrong?