This maker uses one alphabet across everything it builds: an F and a number, with FE on the induction cooktops and a stray E on the steam ovens. That consistency is unusual and it is a real advantage — but it has a trap in it, and it is the reason this site is organized the way it is.
The same number means different things on different machines. F1 is a water-intake circuit on a washing machine and a temperature sensor on a refrigerator. There are 133 distinct numbers in the archive here and 175 pages, because a third of the numbers belong to more than one appliance. So every code page on this site names its appliance in the title, and looking one up starts with which machine is showing it.