While you wait for answers, we may have found some information which could help you.
Click here for Main Medway Automatic
Main 24 Combie Boiler causing power trip of all power to home?
can I fit this myself or do I need to be gas safe engineer?
My Main 30HE loses pressure over 24 hour period?
Main Combo Eco Boiler Error Code E133?
how to regulate gas?
Why does my boiler keep switching on and off?