Defrost Cycle - GE PFSS5NJWSS User Manual

Defrost Cycle

The refrigerator utilizes an adaptive defrost cycle that operates a glass
enclosed heater to remove frost from the evaporator. Defrost time has
changed from 60 hours adaptive defrost to 96 hours adaptive defrost.
The control board determines the length of time the heater is energized.
It does this by monitoring the freezer evaporator thermistor. Once the
temperature of the thermistor reaches 70°F, the control cycles the defrost
heater off. A bi-metal safety thermostat provides a backup in the event
the evaporator thermistor fails. The safety thermostat prevents the
temperature from exceeding 140°F.
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mabe CONFIDENTIAL AND PROPRIETARY INFORMATION-NOT FOR PUBLIC DISCLOSURE. January 2008