Alarm code AL02; low temperature alarm, freezer may be much colder than setpoint.

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.

Possible Causes

Shorted freezer NTC sensor, Stuck compressor relay on control board, Incorrect sensor calibration in control

Safety first: Unplug the freezer before accessing sensors or control board.

Verify actual temperature: Use a freezer thermometer to confirm overcooling.
Check sensor wiring: Inspect the freezer NTC sensor and its wiring for damage or shorts.
Test sensor resistance: Measure NTC resistance and compare to service data. Replace if readings indicate a short (very low resistance).
Inspect control board relay: If the compressor runs continuously even when set to a warmer temperature, the relay may be stuck. Replace the main control board if confirmed.

Hard 4/5

Freezer NTC Temperature Sensor

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