While you wait for answers, we may have found some information which could help you.
Click here for Combi Spark Gas Valve FanFault on fan or flue?
can I fit this myself or do I need to be gas safe engineer?
main combi 24he wont stay lit?
Main 24 Combie Boiler causing power trip of all power to home?
Can I get the instructions to add more water to boiler pressure is just bel?
How can my boiler be fixed i main Medway 55/54 ?