Display shows SY CF; refrigerator may run but with erratic behavior or unresponsive controls.
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Possible Causes
How to Fix / Troubleshooting
Warning: This is an internal electronics fault. Do not attempt board-level repairs without proper training.
- Power cycle: Unplug the refrigerator for 5–10 minutes, then reconnect. Sometimes a transient communication error clears.
- Check for moisture: Inspect the control area for signs of condensation or water intrusion, especially around the dispenser and top control console.
- Inspect harnesses: With power disconnected, verify that all harnesses between the UI and main control are fully seated and not pinched or damaged.
Persistent SY CF errors usually require replacement of the main control board and/or user interface. A professional technician should perform diagnostics to determine which board has failed.
Repair Difficulty
Required Part
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