How do I fix error code 4E on a Samsung refrigerators?

1. undefined: Check voltage between MAIN PCB CN30 #4 and #8 should be 4.5V~1.0V 2. undefined: Inspect defrost heater circuit for continuity 3. undefined: Measure sensor resistance (should be 5.11-5.65 KΩ at 23°C) 4. undefined: Replace thermistor if defective

Samsung Refrigerators2013–present

Error Code 4E

Q: What does error code 4E mean on a Samsung refrigerators?

Freezer defrost sensor failure Connector slipped out or open contact; Wire cut or short-circuited; Abnormal sensing temperature above 50°C or below -50°C

Freezer defrost sensor failure

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: 4E

What This Means

Connector slipped out or open contact; Wire cut or short-circuited; Abnormal sensing temperature above 50°C or below -50°C

What actually causes this:

Thermistor fails from age, connector gets wet from refrigerant leak, or vibration breaks wiring

First Thing to Check

Verify CN30 pin 4 connector is fully seated and dry

Parts Involved

F-Defrost Sensor (Thermistor 502AT)CN30 ConnectorDefrost heater circuit

How to Fix

1
Check voltage between MAIN PCB CN30 #4 and #8 should be 4.5V~1.0V
2
Inspect defrost heater circuit for continuity
3
Measure sensor resistance (should be 5.11-5.65 KΩ at 23°C)
4
Replace thermistor if defective

This Error Applies To

Samsung RS22HDHPN Series Refrigerators (2013) (2013–present)

Service manual exact match: RS22HDHPNBC/AAService manual exact match: RS22HDHPNWW/AAService manual exact match: RS22HDHPN**Service manual exact match: RS22HDHPNSR/AA

Related Error Codes

Freezer sensor failure or wiring issue

Fridge sensor failure or wiring issue

Fridge defrost sensor failure

22E

Fridge fan motor failure or feedback signal issue

26E

Ice maker positioning failure

Ambient temperature sensor failure

13E

Humidity sensor failure

21E

Freezer fan motor failure or feedback signal issue

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