Samsung Refrigerator Error Code F-19
F-DEF-Sensor (Freezer Defrost Sensor) Error - sensor housing slipped out, defective wire contact, wire cut, wire short, or sensor pickup temp is over 149°F (65°C) or under -58°F (-50°C).
SourceSamsung Refrigerator - Troubleshooting Guide: Diagnosis & Flow Charts (RF263AFWPXAC/RF266)p. 44-45
The full F-19 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.
SourceSamsung Refrigerator - Troubleshooting Guide: Diagnosis & Flow Charts (RF263AFWPXAC/RF266)p. 44-45
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Where this code is documented
1 manual in the MyPros+ library documents this code for Samsung refrigerator.
Models covered by the manuals that document this code
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