If you are talking about the defrost control, it is located inside the refrigerator probably close to the light at the top behind a plastic panel. There is normally a hole where you can insert a screw driver to advance the timer.
if you are talking about the defrost heater, it is located inside the freezer at the back wall behind a panel and under neath the evaporator coils along with the termination thermostat.
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If you are talking about the defrost control, it is located inside the refrigerator probably close to the light at the top behind a plastic panel. There is normally a hole where you can insert a screw driver to advance the timer.
if you are talking about the defrost heater, it is located inside the freezer at the back wall behind a panel and under neath the evaporator coils along with the termination thermostat.