What does error code MAIN_INVERTER_COMM_ERROR mean on a Samsung refrigerators?

Main board and compressor inverter board cannot communicate Damaged wiring between main PCB and inverter PCB; Failed Main PCB; Failed Inverter PCB

How do I fix error code MAIN_INVERTER_COMM_ERROR on a Samsung refrigerators?

1. undefined: Check wiring harness between Main PCB and Inverter PCB 2. undefined: Use oscilloscope to check communication signals on cable 3. undefined: Replace Main PCB if cable is intact 4. undefined: Replace Inverter PCB if still failing

Samsung Refrigerators2017–present

Error Code MAIN_INVERTER_COMM_ERROR

Main board and compressor inverter board cannot communicate

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: Error indicated via LED

What This Means

Damaged wiring between main PCB and inverter PCB; Failed Main PCB; Failed Inverter PCB

What actually causes this:

The communication link between the main control board and the inverter that drives the compressor motor has been broken.

First Thing to Check

Check that the cable connecting the main board to the inverter board is properly plugged in at both ends.

Parts Involved

Main PCBInverter PCBCommunication wiring

How to Fix

1
Check wiring harness between Main PCB and Inverter PCB
2
Use oscilloscope to check communication signals on cable
3
Replace Main PCB if cable is intact
4
Replace Inverter PCB if still failing

This Error Applies To

Samsung RF23M80 Series Refrigerators (2017) (2017–present)

Service manual exact match: RF23M80*0**Service manual exact match: RF23M8090SR/AAService manual exact match: RF23M8070SR/AAService manual exact match: RF23M8070SG/AAService manual exact match: RF23M8090SG/SAService manual exact match: RF23M8080SR/EE