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Samsung Refrigerators2018–present

Error Code 9

Convertible zone temperature sensor failure

Moderate

Address soon - your appliance may not work properly

Also displayed as: 9C

What This Means

Connector not seated at Main PCB CN30 pins 11 and 12; Wire harness damaged or cut; Thermistor defective; Main PCB defective

What actually causes this:

Convertible zone sensor connector loosened or sensor element failed

First Thing to Check

Check if the Cool Select Room maintains proper temperature

Parts Involved

Convertible Zone ThermistorMain PCB CN30 Connector

How to Fix

  1. 1

    1. Inspect CN30 connector pins 11 and 12

  2. 2

    2. Measure voltage — expected 4.1V to 0.8V range

  3. 3

    3. Reseat connector firmly

  4. 4

    4. Power on and verify error resolution

  5. 5

    5. If voltage out of spec, replace convertible zone sensor

This Error Applies To

Samsung RF22N9781 Series Refrigerators (2018) (2018–present)

Service manual exact match: RF22N9781Service manual exact match: RF28N9780

Related Error Codes

1

Freezer temperature sensor malfunction

6

Room temperature sensor not working

14

Ice maker temperature sensor failure

2

Fridge temperature sensor is not responding

15

Ice storage area temperature sensor malfunction

4

Freezer defrost sensor is faulty

11

Convertible zone defrost sensor malfunction

16

Internal humidity sensor not responding

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