Error code reference

Samsung Refrigerator Error Code FREEZER-DEFROST-SENSOR ERROR

Freezer defrost sensor failure

Freezer defrost sensor failure — detected temperature exceeds +149°F (+65°C) or below -58°F (-50°C), or sensor housing separation/disconnection/short.

First step from the service manual

Measure voltage at MAIN PCB CN30 pins 4 and 6; shall be between 1.0V and 4.5V.

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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