Freezer with door alarm feature does not alarm when door is left open.

Safety first: Unplug the freezer before accessing switches or the control board.

• Check settings: Ensure the door alarm feature is enabled in the user menu if applicable.
• Test door switch: Verify that the interior light responds to door opening/closing. If not, replace the door switch.
• Listen for buzzer: If other alarms (like high temperature) also do not sound, the buzzer or its circuit may be faulty.
• Replace buzzer/UI: On some models, the buzzer is integrated into the user interface board, which may need replacement.