Which way to turn slotted screw to adjust water pressure up on a glow worm ?
glow worm 2boiler fires up for 10 to 20 mins then shuts off whats wrong?
glow worm 30c boiler,no hot water?
Intermittent boilet fails to fire on heating?
Bt Gas glow worm 330 timer controls not working?
My central heating is not working?
radiators hot when water turned on?
glow worm 30cxi bolier?
How can I fix my glow worm flexicom 30cx ?