what dose fault f4 mean?
how can l fix my gas control valve?
Clearing a blockage from a heat exchanger?
We think we have an airlock in our hot water system?
Central Heating problem?
why is my Glow-worm EP30B not firing?
Glow-worm Micron 60FF not starting when the weather is cold?
isolate gas?
fault codes f4 and f19 mean on the Glow-worm 30ci?
How can I check if I need a new pump ?
pipes banging no radiators working/heating?
Glow-worm 330 keep coming up fault f24 ?
Glow-worm space saver 45-60 won't fire up?
Glow-worm 40B system top-up and inhibitor issue?
central heating wont turn off?