Samsung Refrigerator Error Code: 21E

Error code meaning: Freezer fan error

This error code indicates that the refrigerator is not receiving rotational feedback from the freezer fan. The most common cause of this is that the freezer fan has frozen over. This can be as a result of leaving the door open, or motor failure. Defrosting the unit may be the easiest solution to this issue. After doing this, ensure that the door gaskets are fully sealed.