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Kenmore Refrigerator Not Defrosting

363.58572890

The part(s) or condition(s) listed below for the symptom Refrigerator not defrosting 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 not defrosting

Cause 1Defrost Timer

The defrost timer turns on the defrost heater several times throughout the day to melt any frost that may have accumulated on the evaporator coils. If the defrost timer is defective, it may not advance into the defrost cycle, or it may not send power to the defrost heater during the defrost cycle. To determine if the defrost timer is defective, slowly advance the dial into the defrost cycle. The compressor should turn off and the heater should turn on. If the timer does not send power to the defrost components or advance out of the defrost cycle within 30 minutes, this indicates that the defrost timer is not advancing. If the defrost timer is not advancing, replace it.

Parts
Defrost Timer for your KenmoreRefrigerator
Defrost Timer - Part # 2578 Mfg Part # WR9X489

Refrigerator defrost timer. The defrost timer turns on the defrost heater several times throughout the day to melt any frost that may have accumulated on the evaporator coils. If the defrost timer is defective, the refrigerator will not defrost.

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Install Help
Cause 2Defrost Heater Assembly

The defrost heater assembly turns on several times throughout the day to melt away any frost that may have accumulated on the evaporator coils. If the defrost heater assembly is defective, the defrost system will not work, and frost will continue to accumulate on the evaporator coils. To determine if the defrost heater is defective, use a multimeter to test it for continuity. If the defrost heater does not have continuity, replace it.

Part Testing
Parts
Defrost Heater Assembly for your KenmoreRefrigerator
Defrost Heater Assembly - Part # 2001 Mfg Part # WR51X443

Refrigerator defrost heater kit with defrost thermostat for side by side models. If the freezer is cold, but the refrigerator section is warmer than normal the evaporator coils may be frosted over. This heater comes on periodically to defrost the coils.

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Cause 3Defrost Thermostat

The defrost thermostat monitors the temperature of the evaporator coils. When the coils drop below a set temperature, the thermostat contacts close to allow power to flow to the defrost heater during the defrost cycle. In the defrost cycle, the defrost heater melts away any frost that may have accumulated on the evaporator coils. If the defrost thermostat is defective, the thermostat contacts will not close. As a result, the thermostat won’t provide power to the defrost heater. To determine if the defrost thermostat is defective, use a multimeter to test it for continuity. If the defrost thermostat does not have continuity when it reaches the low temperature of its operating range, replace it.

Part Testing
Parts
Defrost Thermostat for your KenmoreRefrigerator
Defrost Thermostat - Part # 2387 Mfg Part # WR50X122

Defrost thermostat, L60-32, clips to evaporator

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