Error code reference

Samsung Refrigerator Error Code F-1 (F-DEF-Sensor)

Freezer compartment defrost sensor part error

Samsung codes Samsung refrigerator codes

Freezer compartment defrost sensor part error - sensor housing separation, contact error, disconnection, or short circuit, or temperature detected more than 149°F (+65°C) or less than -58°F (-50°C).

First step from the service manual

Check if MAIN PCB Connector CN30 to CN75 is inserted correctly. Measure resistance at CN30#4 and CN75#1.

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
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F-1 (F-DEF-Sensor) on my Samsung RF28R7351SG

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Freezer compartment defrost sensor part error

From Service Manual 581752, p.44:

1.Check if MAIN PCB Connector CN30 to CN75 is inserted correctly. Measure resistance at CN30#4 and CN75#1.

2.Measure control board supply voltage at the test points. Expected: 12 VDC and 5 VDC; a drop below 4.75 VDC on the logic rail points to a failed onboard regulator.

3.Inspect all connectors on the main control for corrosion, thermal stress, or backed-out pins. Reseat each connector with the power disconnected.

Part DA92-00384N

Main PCB assembly

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First step from the service manual

Get the full diagnostic procedure for F-1 (F-DEF-Sensor).

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