Filter
Top Products
– 9 –
into a continuous cool mode (pre-chill). During pre-
chill, the freezer temperature may be driven below
the set point. However, the fresh food temperature
will be regulated by the damper. Pre-chill will last
for 2 hours. These models do not have a defrost
holdoff.
Defrost Heater Operation (Adaptive
Defrost)
After 2 hours of pre-chill operation, the main
control board turns off the compressor, condenser
fan, and evaporator fan.
During defrost operation, the main control board
monitors the evaporator temperature using
evaporator thermistor inputs. The thermistor will
terminate defrost heater operation in less than 45
minutes. Typical defrost time is 20-30 minutes.
Maximum defrost cycle is 45 minutes with heater
on, 5 minutes in dwell.
The defrost system is protected by a defrost
safety thermostat (switch). The thermostat opens
when the evaporator temperature raises to 140° F
and closes when the evaporator temperature
lowers to 110° F.
Dwell Period (Adaptive Defrost)
After defrost heater operation has been terminated
by the main control board, a 5-minute dwell period
occurs. During this period, the compressor,
condenser fan, and the evaporator fan remain off.
The remaining frost melting from the evaporator
will continue to drip and drain so that prior to the
cooling operation, the evaporator will be totally
clear of any moisture. After the 5-minute dwell
period, the unit goes into post dwell.
Post Dwell (Adaptive Defrost)
The post dwell period is designed to cool the
evaporator before circulating air within the
refrigerator. This prevents any residual heat on the
evaporator from being distributed in the freezer.
During this period, the compressor is on and the
condenser fan is on, but the evaporator fan is off,
and the damper is closed. Post dwell lasts 10
minutes on these models.
Liner Protection Mode
The liner protection mode will activate if either of
the doors have been open for 3 minutes. This
mode will start the evaporator fan and close the
damper.
This mode is controlled by 2 timers. Timer #1
monitors door-open time. A 3-minute door-open
count begins when the door is opened. If 3
minutes elapse before the door is closed, the liner
protection mode will become active. Once the
door is closed, timer #1 resets and liner protection
mode goes into standby. In standby, normal fan
and damper operations resume and timer #2
begins a 3-minute door-closed count. If 3 minutes
elapse without a door opening, liner protection
mode will completely deactivate. If a door is
opened within the timer #2 door-closed count, the
remaining time in the door-closed count will be
deducted from the timer #1 door-open count.
Dispensing Functions
The water, crushed ice, and cubed ice functions
are controlled by the main control board. To select
a function, press the appropriate pad on the
dispenser. The LED will light to identify the
selection.
To dispense the selected item, depress the
dispenser cradle located in the dispenser recess.
The solenoid and linkage assembly will open the
ice chute door to dispense the ice. If cubed ice is
selected, the crushed ice bypass solenoid will
allow cubed ice to bypass the ice crusher. The ice
chute door must remain open for 5 second after
dispensing ceases. After this 5 second delay, the
solenoid and linkage assembly will shut the ice
chute door.
The dispenser light will come on automatically
when the dispenser cradle is depressed and will
fade out 5 seconds after it is released.
Dispenser Light
The LIGHT pad turns the dispenser light on and
off. When the light is turned off, it will fade out. The
dispenser light will come on automatically when
the dispenser cradle is depressed and will fade
out 5 seconds after it is released. The LIGHT pad
will not turn off the light during dispense.