While you wait for answers, we may have found some information which could help you.
Click here for Gas Not ComeChaffoteaux Mx2 24 error 50?
How can I fix my chaffoteaux & Maury Britony Combi SE?
chaffoteaux calydra 80 combi boiler?
Chaffoteaux et Maury with no hot water?
My heating and hot water do not work and “A03” is flashing?
How can I fix my boiler chaffoteaux&maury?