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There is Frost On the coils in the back of the freezer I check the the heating sensor for continuity I’ve got a resistance reading of 200 however I check the heating element for continuity I manually put the machine into the forest and nothing happens

Model Number
2533660189a
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Hello, could not find a tech sheet for this model. There are only three parts to the defrost system, heater, bi-metal and the timer. If you have continuity through the heater you will need to check the bi-metal next for continuity while it is in the freezer and cold. if you have continuity through the bi-metal you will have a bad timer. if no continuity through bi-metal you will have a bad bi-metal.

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Have you checked the Freezer defrost bi-metal thermostat # 297216600 to see if its open ? This is in series with the defrost heater that you say has continuity correct ? If your timer contacts are good and sending voltage down to the defrost thermostat then you have an open therm. you can test the defrost therm by bypassing it to see if the heater comes on. You only have three parts to this defrost system 1) Defrost timer #215267800 2) Defrost heater 3) Defrost therm. # 297216600

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