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Error code reference
Samsung Refrigerator Error Code F-defroster sensor blink (FREEZER display)
Freezer defrost sensor failure: connector contact failure, short-circuit, suspected reading below -58°F or over 150°F.
SourceSamsung Refrigerator - Service Manual: Bottom-Mounted Freezer (RB18/RB20 Series)19 (Table 1, No. 5)
Diagnostic procedure
The full F-defroster sensor blink (FREEZER display) 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 connector at CN30 between pins ③~⑤; measure resistance and compare to NTC sensor temperature table.
SourceSamsung Refrigerator - Service Manual: Bottom-Mounted Freezer (RB18/RB20 Series)19 (Table 1, No. 5)
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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