Display shows AL and an audible alarm sounds; temperature may be too high or door may have been left open.

Safety first: Protect food by checking actual product temperature; move to another freezer if necessary.

Steps:

• Confirm door closure: Ensure the door is fully closed and not obstructed by baskets or oversized items.
• Inspect gasket: Check the door gasket for damage or debris. Clean and reseat as needed.
• Silence alarm: Use the alarm mute button (if available) to silence while troubleshooting.
• Check door switch: Verify that the interior light turns off when the door is closed. Replace the door switch if it fails.
• Monitor temperature: Use a separate freezer thermometer to verify actual temperature. If the display is inaccurate, test and replace the cabinet thermistor as needed.

Note: After a power outage or door left open, the alarm may sound until the freezer cools back to the setpoint.