What does error code MAIN_INVERTER_COMM mean on a Samsung refrigerators?

Main board and inverter board have lost communication Communication cable loose or damaged; MAIN PCB failure; Inverter PCB failure

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

1. undefined: Inspect cable between MAIN PCB and inverter PCB 2. undefined: Re-seat connectors 3. undefined: Use oscilloscope to confirm communication signal 4. undefined: Replace MAIN PCB or Inverter PCB as indicated

Samsung Refrigerators2023–present

Error Code MAIN_INVERTER_COMM

Main board and inverter board have lost communication

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: F and R blink

What This Means

Communication cable loose or damaged; MAIN PCB failure; Inverter PCB failure

What actually causes this:

The control board can no longer send commands to the inverter that drives the compressor, so the refrigerator stops cooling.

First Thing to Check

Check the wiring connection between the main PCB and inverter PCB at the back of the unit.

Parts Involved

MAIN PCBInverter PCBCommunication Cable

How to Fix

1
Inspect cable between MAIN PCB and inverter PCB
2
Re-seat connectors
3
Use oscilloscope to confirm communication signal
4
Replace MAIN PCB or Inverter PCB as indicated

This Error Applies To

Samsung RF23BB89 Series Refrigerators (2023) (2023–present)

Service manual exact match: RF29BB89***Service manual exact match: RF24BB66***Service manual exact match: RF30BB62***Service manual exact match: RF29BB82***Service manual exact match: RF30BB69***Service manual exact match: DRF36C300**Service manual exact match: RF24BB69***Service manual exact match: RF30BB66***+2 more