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 Worn Micron 50FF?
Central heating not working?
Glow.worm ultracom 38 cxi showing f25 faultcode?
glow worm 30c boiler,no hot water?
GS 24i junior boiler timer broken?
Glow worm flexicom 30cx auto air vent - how do I replace?
Bt Gas glow worm 330 timer controls not working?
how can i fix my central heating. Glow-worm ultimate?
Is it normal that the flame is burning all the time?
Suprima 50?
My central heating is not working?
Intermittent boilet fails to fire on heating?
fitting thermostat?