While you wait for answers, we may have found some information which could help you.
Click here for Firebird Combi Boileroverheating boiler?
where is pilot light on firebird oil boiler?
How to change a photocell on a Firebird Enviromax boiler?
firebird 50/90 gala?
oil burner starts then stops wont start agail till cooled down?
Firebird S 90 oil boiler tries to ignite but doesn't, Any Ideas??