why is radiators hot when only water is on..HELP?
Glow Worm Ultimate wont fire up?
Replacing LP112 Programmer?
boiler internal fuse keep blowing out!?
My Glow Worm Micron 30FF wont light. How can I check whats wrong&fix it?
What does F43 error message mean on Glow Worm 24/30cx?