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Samsung Refrigerators

Error Code 2

Defrost cycle temperature sensor circuit failure

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: 5 (RR39/RR14/RZ32/RZ11/RQ32)

What This Means

Slipped out sensor housing; Wire cut or short circuit; Temperature reading out of valid range; Defective sensor connection

What actually causes this:

The defrost sensor that monitors the evaporator coil temperature failed or became disconnected

First Thing to Check

Locate the defrost sensor near the freezer evaporator and verify the connector is fully seated

Parts Involved

Defrost Temperature SensorMain PCB CN31 connector

How to Fix

  1. 1

    Check voltage between MAIN PCB CN31 #7 AND #8 (should be 4.5V~1.0V)

  2. 2

    Verify sensor housing position

  3. 3

    Test continuity of sensor wiring

This Error Applies To

Samsung RR39T74 Series Refrigerators

Service manual exact match: RR39T74Service manual exact match: RR14T74Service manual exact match: RZ32A74Service manual exact match: RQ32T76Service manual exact match: RR39A76Service manual exact match: RZ32T77Service manual exact match: RZ11T74Service manual exact match: RR39T76+2 more

Related Error Codes

1

Room temperature sensor circuit failure detected

3

Exterior room temperature sensor circuit failure

7

Freezer defrost heater approaching shutdown failure within 5 minutes

11

Compressor motor drawing excessive current indicating short or mechanical jam

15

Inverter power module temperature exceeded safe limit and shut down

6

Freezer defrost heater circuit malfunction or stuck heater

10

Compressor power control IC fault or compressor winding fault detected

14

AC mains voltage is too high, exceeding safe operating range

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