Frigidaire refrigerator/freezer problem

Hello! My refrigerator stopped cooling but the freezer was working fine. I had a repair man to check it out and he found that the control panel was bad. I ordered the dual digit control board and replaced it today. I replaced the wiring harness as well due to the beta upgrade. I plugged it back in and the freezer side is blinking “3” and the refrigerator is cooling. Can anyone please help me and tell me why the freezer display is blinking “3”? Thank you!

Usually when replacing main controls there’s an instruction sheet on how to program the new board…did you follow the sequence on the paperwork they should of sent with the board?

There was not an instruction sheet on how to program the new board. It just said remove old control board, install new one. I had to also replace the wiring harness due to the part being updated since my appliance was made. Any other suggestions?