Liebherr False Temperature Alarm

Alarm beeping and red warning light on, but interior temperature seems normal.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Faulty temperature sensor, Control board miscalibration, Recent large load causing temporary warm reading

How to Fix / Troubleshooting

Safety first: Do not ignore alarms if food safety is in doubt; verify temperature with a thermometer.

Steps:

  • Check actual temperature: Place an accurate freezer thermometer in the middle drawer and wait several hours to confirm real temperature.
  • Reset alarm: Press the alarm reset button. If the alarm returns quickly despite correct temperature, a sensor or control issue is likely.
  • Inspect sensor: Locate the freezer compartment NTC sensor and check for damage or dislodging.

Remedy: Replace the freezer temperature sensor if readings are inconsistent. If the sensor is good, the main control board may need replacement.

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Repair Difficulty

Medium 3/5

Required Part

Freezer Compartment NTC Temperature Sensor
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