Display shows SY EF; refrigerator section is warm, freezer may be cold; fan noise may be absent or intermittent.

Safety first: Unplug the refrigerator before removing any panels. Sharp metal edges inside the freezer can cause cuts; wear cut-resistant gloves.

Steps to resolve:

• Listen for the fan: Open the freezer door and press the door switch closed. After a few seconds, you should hear the evaporator fan running. If silent, suspect the fan or its circuit.
• Check for frost buildup: If the rear freezer panel is heavily frosted, the fan may be blocked. Remove food, unplug the unit, and allow it to defrost for 24 hours with doors open and towels on the floor. After defrosting, restore power and see if the error returns.
• Inspect wiring: With power disconnected, remove the rear freezer panel to access the evaporator fan. Check the fan connector for corrosion or loose pins and reseat it firmly.
• Test fan movement: Spin the fan blade by hand; it should move freely without grinding. If seized or noisy, the motor is failing and should be replaced.

If the SY EF code returns immediately after a full defrost and wiring check, the evaporator fan motor or main control board is likely defective and should be replaced by a qualified technician.