Freezer displays error code F2 and the internal temperature may fluctuate widely.

Safety first: Disconnect power before accessing the control panel or sensor wiring.

• Check temperature settings: Confirm the setpoint is appropriate (e.g., around -18°C). Avoid frequent changes.
• Inspect sensor wiring: Access the sensor connectors at the control board and ensure they are firmly seated.
• Monitor operation: After a power reset, observe if the compressor cycles on and off normally over several hours.

When to call a technician: If F2 persists and the freezer either runs constantly or not enough, the thermostat circuit on the PCB or the sensor may need professional testing and replacement.