We may have found other answers which could help you.
Click here for Combi Heating Safetymain combi 24he wont stay lit?
How can my boiler be fixed i main Medway 55/54 ?
Fault on fan or flue?
how to regulate gas?
My Main 30HE loses pressure over 24 hour period?
Main 24 Combie Boiler causing power trip of all power to home?