We may have found other answers which could help you.
Click here for Heating System Overflow Pipe Leaking
BMU error code?
Which way to turn slotted screw to adjust water pressure up on a glow worm ?
My central heating is not working?
My radiators not heating up?
Glow worm flexicom 30cx auto air vent - how do I replace?
GS 24i junior boiler timer broken?