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
Other Error Codes for RS25J5008SP
Defrost heater temperature sensing not working
Damper heater not responding or circuit open
Compressor fails to operate or protection activated
Ice maker sensor malfunction or connection issue
Ice maker ejection or level detection malfunction
Freezer evaporator fan not operating properly
Freezer temperature sensor not responding
Freezer defrost cycle fails or takes too long