Refrigerator just stopped running. Had two professionals look at it and they diagnosed it as being an issue with the motherboard. I replaced the motherboard myself bc this would be the cheaper option. After replacing, I now am getting an error code [PE0 000] on the front screen of the refrigerator. The professional said this is an error code but I can't seem to locate what that code means. Does anyone have any advice on what this code means and how to trouble shoot this further? After replacing the motherboard it seems to have made something at the top of the unit start running and the screen now shows up. However all the stuff at the bottom isn't running. I was told the compressor is fine by the professionals. Any information helps. Thanks in advance