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