Freezer too cold, food excessively hard or ice cream rock solid even at higher set temperature.

Safety first: Unplug the freezer before accessing controls.

• Verify with thermometer: Place a freezer thermometer inside and compare actual temperature to the setpoint.
• Check thermostat (mechanical models): Turn the temperature knob from coldest to warmest. You should hear a click as it cycles. If the compressor never shuts off, test the thermostat for continuity and replace if stuck closed.
• Sensor models: On electronic models, test the cabinet/freezer NTC sensors for correct resistance. Replace any that are out of spec.
• Control board: If sensors and thermostat are good but the compressor runs continuously, the main control PCB may be faulty and require replacement.