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
Other Error Codes for RF22R7351AA
Freezer temperature sensor is broken or disconnected
Outside temperature sensor is not working
Ice storage room temperature sensor is not working
Flex Zone damper heater circuit is broken
Refrigerator temperature sensor is broken or disconnected
Flex-Zone temperature sensor is broken or disconnected
Freezer fan motor is not running
Control board IO expander chip is not working