Freezer alarm sounds intermittently even though temperature appears normal.

Safety: Unplug before testing switches or sensors.

Steps:

• Door switch: Inspect and test the door switch for intermittent operation. Replace if it does not consistently change state.
• Sensor connections: Reseat connectors for the freezer thermistor and ambient sensor at the main PCB.
• Monitor: After reseating and possible replacement, monitor for recurrence. If alarms persist without cause, a control board update or replacement may be needed.