Error Code 04
Refrigerator compartment thermistor open or shorted
Moderate
Address soon - your appliance may not work properly
Also displayed as: Right - ④ LED ON
What This Means
Connector missing or slipped out; Contact failure on connector; Electric wire cut or damaged; Short circuit condition; Refrigerator room sensor failure
What actually causes this:
Failed thermistor or broken/disconnected wiring in refrigerator compartment
First Thing to Check
Check CN30 #5 to #7 voltage (1.0V~4.5V expected)
Parts Involved
How to Fix
- 1
Check voltage between MAIN PCB CN30 #5 and #7
- 2
Voltage should be within range of 4.5V to 1.0V
- 3
Verify connector CN30 is fully seated
- 4
Inspect for water infiltration or corrosion
This Error Applies To
Samsung RS25J5008S Series Refrigerators (2014) (2014–present)
Related Error Codes
Ice maker has failed its automatic cycle three times in a row
Freezer compartment thermistor is open or shorted
The damper air-door heater circuit is open — refrigerator temperature control may be affected
Inverter-driven compressor cannot start or is being protected from abnormal electrical condition
Ambient temperature sensor open or shorted — affects defrost timing and efficiency
Ice maker temperature sensor open/short or disconnected
Freezer evaporator fan not spinning — freezer will warm up
Condenser fan not running — compressor will overheat and refrigerator will not cool