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3. Refrigerators – Energy Saving Operating Mode
a) Sequence of Operation
Note:
1) Cut-on, cut-off, and cabinet temperature are read by the same sensor, called the "cabinet
thermistor."
) The defrost thermistor reads the evaporator temperature.
Defrost End
Defrost thermistor
reaches defrost
termination temperature,
or defrost timer reaches
1 hour
Defrost heater off
Defrost Start
Preprogrammed time interval
1. Compressor off
. Frame heater(s) off (Q6 and later)
3. Evaporator fan(s) off
4. Condenser fan off
5. Defrost heater on
6. "dF" displayed
Five minutes after
defrost heater off
1. Compressor on
. Condenser fan on
Five minutes after
compressor start-up
1. Evaporator fan(s) on
. Frame heater(s)
on (Q6 and later)
Board Self Check
1. Frame heater(s) on continuously
(Q5 and earlier)
Frame heater(s) cycle on and off
(Q6 and later)
. Evaporator fan(s) cycles on and off
POWER ON
2-minute Delay
1. Compressor start-up
. Condenser fan start-up
3. Frame heater(s) on
(continuously)
4. Evaporator fan(s) on
(continuously)
Cycle Off (Cut-out
temperature reached)
[Minimum minutes]
1. Compressor off
. Condenser fan off
3. Frame heater(s)
cycle on and off
(Q6 and later)
4. Evaporator fan(s)
cycles on and off
Continue as
normal cycling
Cycle On (Cut-on
temperature reached)
[Minimum minutes]
1. Compressor start-up
. Condenser fan start-up
3. Frame heater(s) on
(continuously)
4. Evaporator fan(s) on
(continuously)
One minute after evaporator
fan start-up "dF" no longer
displayed, cabinet temperature
displayed