While you wait for answers, we may have found some information which could help you.
Click here for Main Fire 3
can I fit this myself or do I need to be gas safe engineer?
My Main 30HE loses pressure over 24 hour period?
How can my boiler be fixed i main Medway 55/54 ?
Fault on fan or flue?
Main Combo Eco Boiler Error Code E133?
Main 24 Combie Boiler causing power trip of all power to home?