How Do You Test A Refrigerator Thermostat?

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The thermostat controls a refrigerator's temperature by sensing temperature changes in the unit and prompting the compressor to turn on and off in response to those changes. The compressor consists of a pump and motor assembly which are housed in a sealed compartment through which the refrigerator cooling liquid travels. When a refrigerator loses its ability to cool evenly and accurately, a faulty thermostat might be the reason. You can test the thermostat along with following basic guidelines in order to help maintain proper temperatures in your refrigerator. Set the ohmmeter to RX1 scale or to the lowest ohm scale. On the right side of the meter, set the pointer to "zero," making sure the probe ends make contact with each other. Put one probe on the left side of the thermostat and one on the right side of the thermostat. The meter should not show a reading if the thermostat is turned off. If a reading appears, replace the thermostat. When the thermostat is turned on, the meter ... more
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