Operation - GE Arctica PSS 23 Series Technical Service Manual

Operation is initated by the consumer when the
selection is made using the touch control at the top
of the fresh food section. The user will have placed
the chill/thaw tray in the proper position, metal
plate facing down for chill, and up for thaw, and
pan closed. A reed switch is mounted on the right
side of the pan to provide a completed circuit when
the pan is tightly closed. Open reed switch
initiates a "beep" from the processor located in the
CustomCool TM pan assembly.
NOTE: DO NOT MANUALLY FORCE DAMPER
DOORS OPEN, IT WILL DAMAGE THE ASSEM-
BLY
Based on users input one of the three selections is
selected, with multiple inputs indexing to provide
TIME, WEIGHT, or TEMPERATURE and
countdown LED. One of three leds will light the
selection portion of the touchpad to provide
feedback and selection information to the user.
The signal is then sent to the main processor and
uses preset software parameters to provide DC
inputs to the CustomCool
mounted in the cover assembly.
When the selection is made a thermistor located in
the side of the lower cover sends temperature
information (resistance) to the main processor. The
processor software determines what combination
of dampers or heater need to be used to achieve
the desired setting. (See thermistor temp chart on
page 8).
Airflow is directed from a diverter in the freezer
side wall to provide cold air or drawn from fresh
food compartment, and is circulated by a 12VDC
fan in the front of the lower cover. When the
thermistor is calling for warmer air the single
damper motor is energized (12VDC) to open and
the 30 watt strip heater is turned on.

Operation

TM
processor board
The warmed air is circulated through the pan to
satisfy the temperature setting. Response to drastic
temperature change is limited between two and ten
minutes. The main control board located in the rear
of the refrigerator will only respond to 8 degrees of
temperature change per minute as determined by
the resistance of the thermistor.
A double door damper 12VDC operates in the
TM
ExpressChill mode, and both sides open to allow
cold air to be drawn in and circulated within the lower
cover. The single damper door is also closed to
prevent loss of cold air and it is returned through the
other side of the diverter back to the freezer
compartment. The double door is cycled open and
shut to maintain the temperature selection selected
by the user, based on thermistor resistance
feedback to the main processor board.
– 5 –
TM