Error Code CI
Main board and compressor inverter board cannot communicate
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: CI LED blinks
What This Means
Communication cable disconnected; Connector pins bent or corroded; Main board PCB failure; Inverter board PCB failure
What actually causes this:
Loose cable or failed inverter board
First Thing to Check
Unplug and check if inverter cable is firmly connected
Parts Involved
How to Fix
- 1
1. Check communication cable between main and inverter boards
- 2
2. Inspect connector pins for damage or corrosion
- 3
3. Use oscilloscope to verify signal transmission
- 4
4. Check PCB soldering quality on both boards
This Error Applies To
Samsung RF22R7351 Series Refrigerators (2010) (2010–present)
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