E12
Adler Overtemperature / Thermal Protection Fault

Adler ice maker displays E12; unit stops and may show signs of overheating in the compressor compartment.

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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

Blocked ventilation around Adler ice maker, Failed compressor cooling fan (if equipped), Ambient temperature above design limit, Faulty thermal sensor in compressor compartment

How to Fix / Troubleshooting

Safety first: Unplug the unit and allow it to cool before inspection.

  • Improve airflow: Ensure the ice maker has the clearances specified in the Adler installation guide. Remove any items blocking front or rear vents.
  • Clean condenser and vents: Vacuum dust from the condenser coil and all air passages.
  • Check auxiliary fan: If your Adler model uses an additional compartment fan, verify it runs when the compressor is on. Replace the fan motor if it fails to start.
  • Inspect thermal sensor: Locate the compartment temperature sensor or thermal switch and check for secure mounting and intact wiring.
  • Reset and monitor: After cooling, restore power and monitor operation. If E12 recurs under normal ambient conditions, the sensor or control board may need replacement.
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Repair Difficulty

Medium 3/5

Required Part

Adler Compartment Temperature Sensor
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