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Gibson Refrigerator freezing food

If your refrigerator is freezing food or running too cold, the likely causes are usually electrical or control components that are telling the compressor and fans to run too long. Start with the temperature control thermostat, which can short or stick and overrun the cooling cycle; a working thermostat usually clicks when you turn it and should show continuity on a multimeter. Next most likely is a bad thermistor, which sends incorrect temperature readings to the control board. A faulty temperature control board or, less commonly, the main control board can then keep the compressor and evaporator fan powered continuously. Also double-check the temperature set point; many refrigerators should sit around 34 to 38 degrees Fahrenheit, and an overly cold setting will freeze food. Finally, a seized or failing evaporator fan motor can move too much cold air into the fridge compartment. If you need parts, enter your model number on RepairClinic.com to see the exact replacement parts that fit your refrigerator and get step by step guidance for repair.

01 - Gibson Refrigerator Temperature Control Thermostat

The temperature control thermostat directs voltage to the compressor, evaporator fan motor, and condenser fan motor (if applicable). If the temperature control thermostat is not working properly, it may cause the refrigerant system to run longer than necessary. As a result, the refrigerator will be too cold. To determine if the thermostat is defective, rotate the thermostat from the lowest setting to the highest setting and listen for a click. If the thermostat clicks, it is not likely defective. If the thermostat does not click, use a multimeter to test the thermostat for continuity. If the temperature control thermostat ...does not have continuity at any setting, replace it.
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Top Solution

02 - Gibson Refrigerator Thermistor

The thermistor monitors the air temperature and sends the temperature reading to the control board. The control board then regulates power to the compressor and evaporator fan based on the thermistor readings. If the thermistor is defective, the compressor and evaporator fan may run too frequently. As a result, the refrigerator will be too cool. To determine if the thermistor is defective, test it with a multimeter. The thermistor resistance should change in conjunction with the refrigerator temperature. If the thermistor resistance does not change, or the thermistor does not have continuity, replace the thermistor.
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Highly Likely

03 - Gibson Refrigerator Temperature Control Board

The temperature control board provides voltage to the compressor and fan motors. If the control board is faulty, it may send continuous voltage to the compressor or fan motors. As a result, the refrigerator will be too cool. Control boards are often misdiagnosed—before replacing the control board, first test all of the more commonly defective components. If none of the other components are defective, consider replacing the temperature control board.
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Highly Likely

04 - Gibson Refrigerator Main Control Board

The main control board might be defective. However, the control board is very rarely the cause of the problem. Before replacing the control board, first test all of the more commonly defective components. If none of these components are defective, consider replacing the main control board.
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Highly Likely

05 - Temperature set too cold

Adjust the refrigerator temperature control to a warmer setting. Many models have a recommended temperature setting displayed, usually between 34 and 38 degrees Fahrenheit (1 and 4 degrees Celsius). Wait 24 hours for the temperature to adjust appropriately.
Highly Likely

06 - Gibson Refrigerator Evaporator Fan Motor

The refrigerator's evaporator fan motor draws air over the cold evaporator coils which chills the air. The air is then circulated through the refrigerator and freezer compartments to keep the temperature low enough to preserve food. If the evaporator fan motor is malfunctioning, the cold air from the freezer or refrigerator evaporator coils can migrate through the air ducts to the bottom of the refrigerator and freeze the food. You should try rotating the evaporator fan blades to see if they spin freely. If not, it's likely the motor bearings have seized and the motor will need to be replaced. You can also use a multimeter... to test the motor for electrical continuity. If the motor has no electrical continuity, the component won't run and a new motor will need to be installed.
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Common

Frequently Asked Questions

Why is my refrigerator freezing food?
How do I test the temperature control thermostat or thermistor?
Could the temperature control board or main control board cause the refrigerator to be too cold?
Why is the bottom of my fridge freezing while the rest of the compartment seems normal?
How do I enter my model number or part number on RepairClinic.com to get the correct replacement part?

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