While you wait for answers, we may have found some information which could help you.
Click here for Boiler Chaffoteaux Maury CombiHow can I fix my boiler chaffoteaux&maury?
How can I fix my Chaffoteaux & Maury boiler?
Relight pilot?
How can I fix my chaffoteaux & Maury Britony Combi SE?
Chaffoteaux Mx2 24 error 50?
My heating and hot water do not work and “A03” is flashing?