How to Fix / Troubleshooting

Safety first: Unplug the freezer before opening the control housing. Do not cut wires unless you fully understand the circuit.

Step-by-step checks:

1. Confirm actual temperature: Use a thermometer to verify that the freezer is at or near the set temperature. If temperature is normal but alarm persists, suspect the alarm circuit.
2. Attempt reset: Press and hold the alarm reset button (if present) for several seconds. If E13 remains, unplug for 10 minutes and reconnect.
3. Access control panel: Remove the panel and locate the buzzer on the PCB. Inspect for signs of overheating or corrosion.
4. Check for stuck button: Test the alarm or reset button for proper movement and continuity. Replace the user interface if the button is shorted.
5. Board replacement: If the buzzer is constantly driven by the board despite normal conditions, the main control board may need replacement.

E13 error; audible alarm may sound continuously even when temperature is normal.

Possible Causes