Freezer interior is too cold; heavy frost on food and walls, items cracking from over-freezing.

Safety: Unplug the freezer before accessing the control knob or electronic control board.

• Adjust setting: Turn the thermostat or electronic control to a warmer setting. Mark the current position and wait 12–24 hours to see if temperature rises to normal.
• Check thermostat click (mechanical): Slowly turn the dial from coldest to warmest. You should hear a click as it cycles off. If there is no click and the compressor never stops, the thermostat may be stuck.
• Sensor test (electronic): If your model uses sensors, a shorted cabinet sensor can cause overcooling. See the cabinet sensor fault section for resistance testing and replacement.
• Replace faulty control: For mechanical models, replace the Galanz thermostat. For electronic models, if sensors are good, the main control board may need replacement due to a stuck compressor relay.
• Prevent food damage: Until repaired, consider moving sensitive items to another freezer and avoid placing liquids in glass containers that can crack.