Refrigerator displays SY CE and may not cool properly; controls may be unresponsive or intermittent.

Safety first: Disconnect power before accessing any control boards. Static discharge can damage electronics; ground yourself before touching boards.

Steps to address SY CE:

• 1. Power cycle: Unplug the refrigerator for 5–10 minutes, then plug it back in. If SY CE reappears, continue.
• 2. Access the control panels: On most Frigidaire refrigerators, the user interface (UI) is in the dispenser/control panel and the main control board is on the back of the cabinet behind a metal cover.
• 3. Inspect wiring harness: Remove the dispenser/control panel trim, gently pull the UI forward, and inspect the ribbon cable or harness for pinched, cut, or corroded wires. Reseat the connectors firmly.
• 4. Check main control connections: At the rear, remove the control cover and inspect the harness from the UI to the main control board. Look for loose plugs, corrosion, or burnt spots. Reseat all connectors.
• 5. Test operation: Restore power and see if the error clears. If the code persists, the UI board is often the first part replaced. If replacing the UI does not resolve it, the main control board is likely defective.

Because this involves low‑voltage control circuits and static‑sensitive components, many homeowners prefer to have a professional perform board diagnostics and replacement.