If a mini fridge continually freezes everything, regardless of the temperature setting, there could be several potential reasons for this issue:
Thermostat or Temperature Control Failure: The thermostat is responsible for regulating the temperature inside the mini fridge. If it malfunctions or gets stuck in the "on" position, it will continue to run the cooling system, causing the fridge to get excessively cold and freeze everything inside.
Damaged Temperature Sensor: Modern mini fridges often have temperature sensors that monitor the internal temperature and signal the compressor to turn on or off accordingly. A faulty temperature sensor may not provide accurate readings, leading to continuous cooling and freezing of items.
Poor Air Circulation: If the fridge's internal fans or vents are blocked or not working correctly, the cold air may not circulate properly. As a result, some areas of the fridge may become excessively cold, causing freezing.
Refrigerant Leak: A refrigerant leak can disrupt the cooling process and lead to an uncontrolled drop in temperature inside the fridge. This can cause everything to freeze, even if the thermostat is set to a higher temperature.
Defective Defrost System: Mini fridges often have a defrost system to prevent ice buildup on the evaporator coils. If the defrost system fails, ice can accumulate on the coils, reducing airflow and causing the fridge to stay too cold.
Incorrect Location: Placing the mini fridge in an environment with very low ambient temperatures (e.g., a garage or unheated room) can cause the cooling system to work harder than necessary, leading to freezing issues.
Control Circuit Board Failure: Some mini fridges have electronic control boards that regulate the cooling process. If this circuit board malfunctions, it can cause erratic cooling behavior, including continuous freezing.
To address this issue, you can try the following steps:
Check the temperature setting: Make sure the thermostat is set to the correct temperature. Test different settings to see if there's any response.
Check for blockages: Ensure that the fridge's internal fans and vents are not obstructed by food items or debris.
Inspect the temperature sensor and defrost system: These components may need inspection and, if necessary, replacement by a qualified technician.
Check for refrigerant leaks: If you suspect a refrigerant leak, contact a professional technician to diagnose and fix the issue.
Check the fridge's location: Ensure the fridge is placed in a suitable environment with reasonable ambient temperatures.
If the problem persists despite these troubleshooting steps, it's best to seek assistance from a certified appliance repair technician who can diagnose and fix the specific issue with your mini fridge.