While you wait for answers, we may have found some information which could help you.
Success
Message
No heating or hot water and no idea whats wrong !!?
knocking sound?
safety relief valve?
My ideal isar HE 24 is showing F L on the screen and won't fire up. ?
diveter or not?
My shower and hot water taps are running cold?
rattling nosie in the ideal bolier??
Gas Jet Lights but goes off again after about a minute?
h3 code ideal izar he24 what is it?
converting to sealed system?
I have an Ideal ff380 boiler. The heating is not coming on with the timer?
where is the overheat button on an ideal elan2!!!!!?