Samsung Refrigerator — Error Code 21E
The freezer fan is not rotating as sensed by the control.
ApplianceDB ranks 1 repair for this code, led by “Defrost or request service”. That top fix is a moderate-difficulty DIY job, involving the freezer fan. Severity is classified as degraded — the appliance keeps running but not correctly.
Ranked repair steps
1. Defrost or request service
Ensure the freezer is not overpacked and the door gaskets seal fully; defrost the unit if you wish, otherwise request service.
moderate · basis: manufacturer first
Provenance: facts re-derived from an official manufacturer listing — Samsung US Support — Refrigerator Error Codes. Meanings and steps are original paraphrase; nothing is reproduced verbatim.