SY CE
Kenmore
Main Control Board to User Interface Communication Error
Error code SY CE is displayed. The refrigerator may not cool and the controls may be unresponsive.
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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, Corroded connectors between the UI and main board, Failed user interface board, Defective main control board.
How to Fix / Troubleshooting
Safety first: Unplug the refrigerator before accessing any control boards.
Steps:
- 1. Access the main control board: Remove the rear access cover to reach the main PCB (often in a plastic housing).
- 2. Access the user interface board: Remove the front display/control panel trim and screws to expose the UI board.
- 3. Inspect the harness: Follow the communication harness between the two boards. Look for pinched, cut, or chewed wires.
- 4. Reseat the connectors: Unplug and firmly reconnect all harness connectors at both boards.
- 5. Check for corrosion or burns: Replace any board that shows obvious damage.
- 6. Replace the likely failed board: If the wiring is intact, start by replacing the user interface board. If the error persists, the main control board may also need replacement.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board
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