While you wait for answers, we may have found some information which could help you.
Click here for Hot Fine Central Heatingchaffoteaux brittony combi se 80?
gas water heater chaffoteaux britony 11t (geyser ) 11 years old?
My heating and hot water do not work and “A03” is flashing?
How can I fix my Chaffoteaux & Maury boiler?
How can I fix my chaffoteaux & Maury Britony Combi SE?
pressure relief valve?