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30
C. Defrost
To initiate a manual defrost, press the manual defrost button briey. The defrost icon and
"dEF" appear on the display.
1. Refrigerators
Refrigerators use a time-initiated, off-cycle defrost. Defrost occurs when either the
2-hr.cumulative compressor run timer terminates or the 2-hr. continuous compressor
run timer terminates. When either the 2-hr.cumulative compressor run timer or the
2-hr. continuous compressor run timer terminates, defrost begins. The 5-min. minimum
defrost timer and the 1-hr. maximum defrost timer starts. If energized the compressor
de-energizes and the evaporator fan motor continues. Cabinettemperature is not
displayed during defrost; "dEF" is displayed in its place along with defrost icon. After
the 5-min. minimum defrost timer terminates and the defrost thermistor warms to 44°F
(6.6°C), defrost terminates. The defrost icon turns off and the compressor energizes.
"dEF" is displayed during defrost and continues for 15 min. after defrost termination.
Once the 15-min. "dEF" display timer terminates, cabinet temperature returns to the
display. Note: If the defrost thermistor is above 50°F (10°C) the evaporator fan motor
de-energizes until the defrost thermistor reaches 49°F (9°C).
2. Freezers
Freezers use a time-initiated, heated defrost. Defrost occurs when either the
5-hr.cumulative compressor run timer terminates or the 4-hrcontinuous compressor
run timer terminates. When either the 5 hr. cumulative compressor run timer or the
4-hrcontinuous run timer terminates, defrost begins. The 5-min. minimum defrost
timer and the 1-hr. maximum defrost timer starts. Cabinettemperature is not displayed
during defrost; "dEF" is displayed in its place along with the defrost icon. After the
5-min. minimum defrost timer terminates and the defrost thermistor warms to 77°F
(25°C), defrost terminates (defrost heater de-energizes). A 3-min. compressor delay
timer starts. Once the 3-min. compressor delay timer terminates, the compressor
energizes and a 4-min. evaporator fan motor delay timer (drip time) starts. Once the
4-min. evaporator fan motor delay timer (drip time) terminates, the evaporator fan
motor energizes, the defrost icon turns off, and the 15-min. temperature display delay
timer starts. Once the 15-min. temperature display delay timer terminates, cabinet
temperature is displayed. Note that the 4-min. evaporator fan motor delay time is a
maximum; if the defrost thermistor cools to 15°F (-9.5°C) before the 4-min. evaporator
fan motor delay timer terminates, the evaporator fan motor will energize. Freezers have
a minimum defrost interval of 5hours.
3. Manual Defrost
To initiate a manual defrost, press the manual defrost button.
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