Alarm beeps intermittently even though the door is closed and temperature seems normal.

Safety: Unplug the unit before checking switches or sensors.

• Door switch test: Wiggle the door gently while the unit is powered. If the alarm sounds, the reed switch or magnet may be marginal. Replace or realign as needed.
• Sensor connections: Reseat connectors for cabinet and evaporator sensors on the main PCB.
• Fan check: Ensure internal fans are running to prevent localized hot spots that can trigger alarms.
• Power reset: Unplug for 10 minutes to clear any temporary logic errors.