While you wait for answers, we may have found some information which could help you.
Success
Message
fault code meaning?
Isar Boiler?
Fault codes LF and H2 on my isar He30?
isar he24 heating on permantly?
should i get my boiler fixed or replaced?
Isar HE 35 heats central instead of warm water?
How to fix a leak between the burner and heat exchanger?
re-filling?
l and f flasing on isar he24 boiler?
Can you help with a part number or name?
yet another problem ideal isar he30?
my isar he24 keeps flashing h3what does this mean?