I had the same problem getting the code F1:E3. I found out the oven door lock was not all the way in the unlocked/locked position. It is very important to have all relays and switches in the correct position before going through the programing so the new board can do a proper check of all components. This makes the setup go alot quicker. The new board could not tell the door was attached so it through the code F1:E3 to tell me to check the cavity size and jumper settings. After the door lock was in the right position the board was able to read the jumper setting to get the right cavity settings automaticly.