Error code reference

Samsung Refrigerator Error Code FZ-Sensor Error

Freezer compartment temperature sensor error due to separation of sensor housing, contact error, disconnection, or short circuit; detected when temperature reads above 149°F(+65°C) or below -58°F(-50°C).

SourceSamsung RF25/RF28/RF30 French Door Refrigerator - Full Service Manualp. 56

Diagnostic procedure

The full FZ-Sensor Error procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check voltage at MAIN PCB CN30-3 to N76-1; should be between 4.5V and 1.0V.

SourceSamsung RF25/RF28/RF30 French Door Refrigerator - Full Service Manualp. 56

More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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