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Refrigerator defrost thermostat kit. L55-20F. The defrost thermostat monitors the temperature of the evaporator coils. When the coils drop below a set temperature, the thermostat sends power to the defrost heater. If the defrost thermostat is defective, the refrigerator will not defrost.

Refrigerator/Freezer Thermometer

Temperature control

Defrost thermostat. Some part databases show this number as a cold control, but that is a mistake. See the related item if you need a freezer cold control.

Temperature control thermostat assembly

This is a genuine replacement part. Frigidaire 5303917629 Defrost Thermostat.

This is a genuine replacement part. Frigidaire 5303917628 Defrost Thermostat.
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