Im getting an error message on my boiler . Its an Ideal isar he-30 . Its around 3 years old . The error message reads a flashing L-F . The manual suggests i ring and engineer . I belive it could be the spark generator or spark electrode , as when i turn it on it runs for about
20 secs the fan spins etc but then it slows and everything stops . .Any help gladly appreciated as im bloody freezing . Cheers .