Electrolux Refrigerator Error Code SY CF — Communication Failure
What this means
The SY CF error code on Electrolux refrigerators indicates a communication failure between the main electronic control board (usually located at the back near the compressor) and the user interface/display board (on the front door). The display may show SY CF and the refrigerator may stop cooling. This is commonly caused by a failed wire harness, a faulty main board, a faulty UI board, or a power surge damaging the communication line.
Alternate codes: SYCF, SY-CF, 5Y CF
Step-by-step fix
4 stepsPower cycle the refrigerator
Unplug the refrigerator for 10 minutes, then plug it back in. Wait for the display to initialize. If SY CF clears and the fridge begins cooling, it was likely a temporary glitch.
Power surges and brief power outages are the most common trigger for SY CF.
Check the wire harness connections
Access the main control board (rear bottom) and the UI board (behind the front display panel). Check the wire harness connections at both boards. Unplug and firmly reseat each connector. Look for damaged, corroded, or bent pins.
The wire harness runs through the door hinge area — check for wear or pinching near the top hinge.
Test the wire harness
Using a multimeter, test continuity through each wire in the harness from one board connector to the other. Any wire showing open circuit has a break and the harness needs replacement.
On French door models, the harness passes through the hinge and is prone to wear from door opening/closing.
Replace the faulty component
If the harness is good, one of the boards has failed. Try replacing the main control board first, as it is the more common failure point. If SY CF persists, replace the UI board.
Some replacement boards may need to be configured for your specific model — check the installation instructions.
When to call a professional
Board and harness diagnosis can be complex on refrigerators. If power cycling doesn't resolve SY CF, a professional can use diagnostic modes to pinpoint the failure.
Related error codes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
Learn more about our sourcesParts you may need
Main Control Board
Part #242115280 · $100–$200
If harness is good but communication still fails
User Interface Board
Part #242058226 · $80–$180
If main board replacement doesn't resolve the issue
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