Error Code 4E
Freezer defrost temperature sensor malfunction
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: 4 E
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:
The freezer defrost sensor failed, so the system can't tell when to start or stop the defrost cycle.
First Thing to Check
Locate the defrost sensor near the freezer evaporator and check for loose connections.
Parts Involved
How to Fix
- 1
Measure voltage between MAIN PCB CN30 #4 and #7
- 2
Voltage should be within range 4.5V to 1.0V
- 3
During defrost, sensor should read lower than -5°C
Other Error Codes for RS25H5121WW
Ice maker position sensor out of sync
Refrigerator defrost heating system malfunction
Refrigerator compartment warming up abnormally
Room temperature sensor malfunction
Compressor motor won't start
Refrigerator defrost temperature sensor malfunction
Freezer compartment fan motor not responding
Freezer defrost heating system malfunction