SY CE
Café
Serial Communication Error Between Boards
SY CE or communication error on some Café/GE-based control platforms; display may be blank or show error and cooling may stop.
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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.
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Possible Causes
Loose or damaged communication harness, Faulty display/user interface board, Defective main control board, Electrical surge damage
How to Fix / Troubleshooting
Safety first: Unplug the refrigerator before accessing any control boards or wiring.
- 1. Power reset: Disconnect power for 5–10 minutes, then restore. Observe if the error clears.
- 2. Inspect harness connections: Access the main control board at the rear and the UI board at the door or top. Ensure all communication cables are fully seated.
- 3. Look for physical damage: Check for pinched cables at hinges or where the harness passes through the cabinet.
- 4. Board substitution: If wiring is intact, one of the boards is likely faulty. Replacement of the UI or main control board should be done with OEM Café parts and may require a technician.
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Repair Difficulty
Professional Required
5/5
Required Part
User Interface Board
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