We may have found other answers which could help you.
Click here for Boiler Heating Problem
can I fit this myself or do I need to be gas safe engineer?
How can I fix my Main Combi 30HE boiler?
how to regulate gas?
How can I reduce the pressure on my boiler?
Main 24 Combie Boiler causing power trip of all power to home?
main combi 24he wont stay lit?