Display shows F2; freezer may overcool or not reach set temperature; compressor behavior may be erratic.

Safety first: Disconnect power before removing any panels or working near wiring.

Steps:

• Access evaporator area: Remove freezer drawers and the rear interior panel (evaporator cover). This may require removing a few screws and carefully unclipping the panel.
• Locate the evaporator sensor: It is usually clipped to the evaporator tubing or embedded in foam near the evaporator on Liebherr freezers.
• Inspect sensor and wiring: Look for broken insulation, corrosion, or a sensor that has come loose from the evaporator. Ensure the sensor is firmly attached to the coil or in its designated pocket.
• Check continuity: With the sensor unplugged, measure resistance. An infinite or near-zero reading indicates a faulty sensor.

Remedy: Replace the evaporator NTC sensor with the correct Liebherr part. Clip or secure it in the original position for accurate temperature measurement. Reassemble the evaporator cover carefully to avoid air leaks.