Error Code 02
Serial communication between main controller and display panel has been lost
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: Right - ② LED ON
What This Means
Broken communication wire between Main PCB and Panel PCB; Main MICOM failure; Panel MICOM failure; Connector contact failure
What actually causes this:
Failed panel PCB, damaged wiring harness, or failed main PCB communication circuit
First Thing to Check
Inspect wiring harness connections at upper hinge cover and both PCBs
Parts Involved
How to Fix
- 1
Use oscilloscope to check communication signal on serial lines
- 2
Check wire harness for breaks or loose connectors
- 3
Verify connector seating on both Main and Panel PCB
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
Refrigerator compartment thermistor open or shorted