Amana Thermostat or Control Overcooling

Freezer is too cold; items are rock-hard and there is heavy frost on packages and interior surfaces.

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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

Defective temperature control thermostat (mechanical models), Failed thermistor, Control board not cycling compressor off, Temperature set too low

How to Fix / Troubleshooting

Safety: Unplug the freezer before accessing controls.

Steps:

  • Adjust temperature: Set the control to a warmer setting and monitor for 24 hours.
  • Mechanical thermostat models: If the compressor runs constantly regardless of knob position (including "off"), replace the temperature control thermostat.
  • Electronic models: Test the cabinet thermistor and replace if out of spec. If the thermistor is good but the compressor never cycles off, replace the electronic control board.
  • Check door gasket: A leaking gasket can cause the unit to run excessively and build frost; replace if damaged.
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Repair Difficulty

Medium 3/5

Required Part

Temperature Control Thermostat
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