mypros+
Error code reference

Samsung Refrigerator Error Code F3

FZ-DEF-Sensor (Freezer Defrost Sensor) Error: sensor housing separation, contact error, disconnection, or short circuit; detected temperature exceeds 149°F (+65°C) or below -58°F (-50°C).

SourceSamsung RF220NCTASR/AA Refrigerator - Full Service Manualp. 45

Samsung codesSamsung refrigerator codes
Diagnostic procedure

The full F3 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
Measure voltage at MAIN PCB CN30-"5" ↔ CN76-"1"; shall be between 4.5V ~ 1.0V.

SourceSamsung RF220NCTASR/AA Refrigerator - Full Service Manualp. 45

Unlock with pass
Unlock with pass
Unlock with pass
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
Unlock F3 procedure $9.95

Or subscribe: $29/month for all codes plus Max diagnostics, with 70 Max messages a day. Plus applicable tax.

Where this code is documented

2 manuals in the MyPros+ library document this code for Samsung refrigerator.

Models covered by the manuals that document this code

Related Samsung refrigerator error codes

All Samsung refrigerator codes

75,000+ service documents · 20,000+ error codes · 100+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass · Plus applicable tax