Samsung Refrigerators2021–present

Error Code 13C

The internal humidity sensor is reporting an invalid reading

Moderate

Address soon - your appliance may not work properly

Also displayed as: 13C

What This Means

Sensor housing separation; Incomplete contact at connector; Open-circuited wire; Short-circuit

What actually causes this:

The top table cover was removed and the humidity sensor connector was not fully reseated

First Thing to Check

Check that the HUM-TEMP sensor connector in the top table assembly is fully clicked in

Parts Involved

Humidity sensor (HUM-TEMP sensor)Main PCBCN90 connector

How to Fix

  1. 1

    Verify CN90 connectors on Main PCB are properly inserted

  2. 2

    Check that DC 5V is supplied to the humidity sensor (measure between humidity sensor connectors #1 and #2)

  3. 3

    Check output voltage at connectors #2 and #4 — normal range is 1V to 4V

  4. 4

    Check voltage between Main PCB CN90 pins 4 and 2 — should be in 3.68V to 0.98V range

This Error Applies To

Samsung RF29A9071 Series Refrigerators (2021) (2021–present)

Service manual exact match: RF23A9071*Service manual exact match: RF23A9675MT*Service manual exact match: RF71A9671*Service manual exact match: RF71A9771*Service manual exact match: RF85A92FA*Service manual exact match: RF29A9071*Service manual exact match: RF29A9770*Service manual exact match: RF23A9675*+2 more

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