Samsung error codes

Samsung changed how it labels faults partway through, so the same problem reads as 4E on an older machine and 4C on a newer one. Display width changes it again: a narrow display shows 5C where a wider one shows 1 5C, and the letter S is drawn as a 5, which is why SUD appears as 5UD. Every spelling of a code is listed on its page, so search for what your machine actually shows.