Error Code 44
Main board cannot communicate with compressor inverter
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: 44
What This Means
Communication cable disconnected or loose; Communication cable damaged or shorted; Inverter PCB defective; Main PCB defective; Connector pin corrosion
What actually causes this:
Communication cable came loose or inverter board failed
First Thing to Check
Check for loose cables at back of refrigerator — if all cables appear secure, call technician
Parts Involved
How to Fix
- 1
1. Inspect communication cable connection between Main and Inverter PCB
- 2
2. Reconnect cable firmly if loose
- 3
3. Check cable for visible damage, pinching, or moisture
- 4
4. Use oscilloscope to verify data signals on communication cable
- 5
5. Check SMPS (power supply) voltage output to both boards
- 6
6. If communication signals present but error persists, replace Inverter PCB
- 7
7. If no signals, replace Main PCB
This Error Applies To
Samsung RF22K9581 Series Refrigerators (2016) (2016–present)
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