Samsung Refrigerators2016–present

Error Code 5

Refrigerator defrost cycle cannot detect when ice has melted

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: 5

What This Means

Loose connector at CN30-8 or CN76-1; Damaged defrost thermistor; PCB solder joint failure; Open or shorted wiring

What actually causes this:

Defrost sensor disconnected or failed from moisture exposure

First Thing to Check

Verify the fridge defrost sensor connector is firmly seated on the main board

Parts Involved

Fridge Defrost Sensor (Thermistor 502AT)Main PCB connector CN30Bimetal thermostat

How to Fix

  1. 1

    Check voltage between Main PCB CN30-8 and CN76-1

  2. 2

    Expected voltage range: 4.5V to 1.0V

  3. 3

    If out of range, inspect connector contacts

  4. 4

    Measure resistance across sensor leads

This Error Applies To

Samsung RF265BEA Series Refrigerators (2016) (2016–present)

Service manual exact match: RF265BEAService manual exact match: RF265

Need more help with your Samsung refrigerators?