Error code reference

Samsung Refrigerator Error Code FRIDGE-DEFROST-FUNCTION ERROR

Fridge defrost heater failure; defrost does not finish though heating continuously for more than 80 minutes…

Fridge defrost heater failure; defrost does not finish though heating continuously for more than 80 minutes, caused by heater housing separation, contact error, disconnection, short circuit, or temperature fuse error.

First step from the service manual

After separating MAIN PCB CN70 wire, measure resistance between Black and CN72 Gray; shall be 63(230) ohm ±7%. 0 ohm = heater short, infinity = wire/bimetal open.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
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