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Whirlpool Refrigerator Freezing Food

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The part(s) or condition(s) listed below for the symptom Refrigerator freezing food are ordered from most likely to least likely to occur. Check or test each item, starting with the items at the top of the page.

Most Frequent Causes for Refrigerator freezing food

Cause 1Thermistor

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.

Parts
Thermistor for your WhirlpoolRefrigerator
Thermistor - Part # 1057764 Mfg Part # WP2188820

Thermistor assembly

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Cause 2Main 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.

Parts
Main Control Board for your WhirlpoolRefrigerator
Main Control Board - Part # 940861 Mfg Part # 4389211

Electronic control board

Cause 3Damper Control Assembly

The air damper control opens and closes to let the proper amount of cold air into the refrigerator compartment. If the damper does not close properly, it will let too much cold air into the refrigerator. Check the damper control to determine if it is broken or stuck open.

Parts
Damper Control Assembly for your WhirlpoolRefrigerator
Damper Control Assembly - Part # 4431790 Mfg Part # WP2220377

Baffle control assembly *Must also replace Control

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