AL02
Indesit Low Temperature / Overcooling Alarm

Freezer shows AL02 or a low-temperature alarm; internal temperature is excessively low and may cause over-freezing or noise.

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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

Stuck relay on main PCB keeping compressor on, Shorted temperature sensor, Incorrect thermostat setting, Faulty control board

How to Fix / Troubleshooting

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

Basic checks:

  • Verify the temperature setting is not at maximum cold or in Super Freeze mode. Adjust to a normal setting and wait several hours.
  • Check if the compressor runs almost continuously without cycling off.

Sensor and control checks:

  • If an NTC sensor is shorted, the control may think the freezer is warm and overrun the compressor. Test cabinet and evaporator sensors as described in other entries.
  • If sensors are normal, the compressor relay on the main PCB may be stuck closed. Inspect the board for welded relay contacts or burn marks.

Repair:

  • Replace any faulty NTC sensor with the correct Indesit part.
  • If the relay is stuck or the board is damaged, replace the main control board.
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Repair Difficulty

Hard 4/5

Required Part

Main Control Board (PCB)
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