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Why is my freezer not defrosting?

I have a standalone freezer (Whirlpool WSZ57L18DM) that is not defrosting.

- I checked the heating element and found that there is continuity.

- I also checked the thermistor. It had resistance of 2.3 kohms at room temperature and 5.7 kohms in ice water.

Do those readings sound normal? Is there anything else I should check? What part seems faulty?

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Jack - Yes those readings sound good. If all the connections are good and tight then it must be the main control. Part #W10701810

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Thank you. I tested the thermistor again and got very different readings. I ordered a new one and it has been running well for a week. I think if it’s still good after 2 weeks then the problem is solved.

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That’s good news. The readings need to be consistent. I’m glad you got it fixed!

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We are having the same problem with the same freezer. I am wondering if your solution worked long term.

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Cause 1

Defrost Control Board

The defrost control board determines how often to run the defrost cycle. If the board fails, the refrigerator will not go into the defrost cycle. Before replacing the defrost control board, first test the defrost heater and defrost thermostat. If the defrost heater and defrost thermostat are working properly, the defrost control board is likely defective.

Cause 2

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, 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.

Cause 3

Defrost 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.

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Thanks for taking the time to reply. You provided a generic answer to a specific question. Does the thermistor reading sound normal? This unit doesn't seem to have the old school mechanical timer. It's all just one digital control unit from what I can tell.

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Jack Your question is above my pay grade. Let's see if the resident pro can help @ladytech

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@mayer So when did I become a resident pro? LoL just show me the money

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Jack sonsuza kadar minnettar olacak.
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