We may have found other answers which could help you.
Click here for Started Hot Water Tapcan I fit this myself or do I need to be gas safe engineer?
Main Combo Eco Boiler Error Code E133?
Why does my boiler keep switching on and off?
My Main 30HE loses pressure over 24 hour period?
How can I fix my Main Combi 30HE boiler?
Main 24 Combie Boiler causing power trip of all power to home?