Freezer overcooling; food is excessively hard or showing freezer burn, even at normal settings.

Safety: Disconnect power before accessing sensors or control boards.

Steps:

• Check settings: Verify that the temperature is not set too low and that SuperFreeze is off.
• Measure actual temperature: Place a thermometer in the freezer and compare to the displayed value.
• Inspect sensor: Access the freezer compartment sensor and test its resistance at a known temperature. Replace if out of specification.
• Control board: If the sensor is correct but the compressor runs excessively, the control board relay may be stuck. Replace the main control module if confirmed.