Built-In
Built-In
(600-
(600-
2
2
)
)
Series
Series
Electronic Control System
3-12
#3758407 - Revision B - August, 2006
Monitor and Control Refrigerator Off-Cycle Defrost
Temperature signals from the refrigerator compartment evaporator thermistors are monitored by the microprocessor.
During off cycle defrost, if the compartment temperature reaches high offset before the evaporator rises to 38°F
(3°C), the signal to run the compressor and evaporator fan will wait, allowing the refrigerator evaporator to fully
defrost before the compressor is energized (See Figure 3-15).
NOTE: If a refrigerator comp
artment thermistor is faulty, the refrigerator compressor defaults to 20 minutes on, 40
minutes off cycling, EE appears at right in LCD, SERVICE flashes and Error Code 05 is logged.
NOTE: If a refrigerator evaporator
thermistor is faulty, the refrigerator compressor is not energized until compart-
ment air temperature exceeds high offset by 5°F (3°C). SERVICE flashes and Error Code 06 is logged.
Figure 3-15. Signal Trace Schematic (High Voltage only) of Refrigerator Off-Cycle Defrost