Error Code 44
Main board and inverter board have lost communication
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: F and R LEDs blink (item 44)
What This Means
Damaged or disconnected inverter communication cable; Failed MAIN PCB communication port; Failed Inverter PCB; Poor soldering
What actually causes this:
The control board can no longer communicate with the compressor's inverter module, which will cause the compressor to stop running
First Thing to Check
Check the cable connecting the main board to the inverter PCB in the machine compartment
Parts Involved
How to Fix
- 1
Check cable between MAIN PCB and Inverter PCB
- 2
Confirm cable is undamaged and fully seated
- 3
Use oscilloscope to verify communication signal
- 4
Replace MAIN PCB first if cable is good; then Inverter PCB
This Error Applies To
Samsung RF18A5101 Series Refrigerators (2021) (2021–present)
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