While you wait for answers, we may have found some information which could help you.
Click here for Pressure Valve BoilerMy boiler won't light but will when we take the cover off ?
How can I fix my Chaffoteaux & Maury boiler?
chaffoteaux calydra 80 combi boiler?
Relight pilot?
chaffoteaux brittony combi se 80?
gas water heater chaffoteaux britony 11t (geyser ) 11 years old?