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Over the last week before the electrician came i had expercienced both faults at some time.

It doesnt have a code for FH in the manual. It has FL which stands for flame detection error. Ive had an engineer out who sorted the FL fault as it was a blocked condensation trap, but not this new fault has come up and the only thing that works is the pump. I am at a loss.

Hi, I dont have any heating or hot water and my boiler (Ideal Isar) is flashing F.H on the status screen. Does anyone know what this fault means? Thanks.