Error Code 04
Refrigerator compartment temperature measurement failure
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: Right - ④ LED ON
What This Means
Sensor connector missing or loose; Contact failure at connector; Electric wire cut or damaged; Short circuit at sensor
What actually causes this:
Thermistor fails from age or moisture ingress; connector corrosion occurs
First Thing to Check
Check CN30 connector is fully seated and check wiring
Parts Involved
How to Fix
- 1
Check voltage between MAIN PCB CN30 #5 and #7
- 2
Voltage should be within range 4.5V ~ 1.0V
- 3
Inspect connector seating and wiring
This Error Applies To
Samsung RS25J50 Series Refrigerators (2010) (2010–present)
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