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Error code reference
Samsung Refrigerator Error Code 7C
Convertible zone sensor error: voltage between Main PCB CN30 pins 11 and 12 is outside the 4.1V-0.8V range.
SourceSamsung French Door Refrigerator - Full Service Manual (RF22K/RF28K)p. 94
Diagnostic procedure
The full 7C 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 the voltage between Main PCB CN30 pins 11 and 12; verify it is within 4.1V-0.8V range.
SourceSamsung French Door Refrigerator - Full Service Manual (RF22K/RF28K)p. 94
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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Where this code is documented
4 manuals in the MyPros+ library document this code for Samsung refrigerator.
Models covered by the manuals that document this code
75,000+ service documents · 20,000+ error codes · 100+ brands
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