Display shows L1 or LO; freezer interior is extremely cold, and some items may be over-frozen or brittle.

Safety first: Avoid prolonged contact with extremely cold surfaces to prevent skin injury.

• Check set temperature: Verify the setpoint on the control panel. Adjust to the recommended setting (typically around -18°C / 0°F) and wait several hours.
• Power reset: Unplug the freezer for 5–10 minutes, then reconnect to reset the control logic.
• Check sensor: If the freezer continues to run excessively cold, the cabinet temperature sensor may be reading incorrectly. Inspect and test the NTC sensor as described for E1.
• Observe compressor cycling: The compressor should cycle on and off. If it runs continuously regardless of temperature, the control board or thermostat circuit may be stuck.
• Replace faulty parts: Replace the cabinet temperature sensor first. If overcooling persists, the main control board may need replacement.

Persistent overcooling can damage food quality; if you cannot correct it with settings and sensor replacement, seek professional service.