GE Profile PGCS1RKZ Technical Service Manual page 11

Dispensing Functions
The water function is controlled by the main control
board. To select this function, press the cradle on
the dispenser.
Dispenser Lock
When the dispenser system is locked, no dispenser
command will be accepted. This includes the
dispenser cradle and will prevent accidental
dispensing that may be caused by children or pets.
If a pad or the cradle is depressed with the system
locked, it will be acknowledged with 3 pulses of the
LOCK LED accompanied by an audible tone.
To lock or unlock communication between the
dispenser and main control board, press the
L pad and hold it for 3 seconds. The LOCK LED
OCK
will fl ash while the L
OCK
the communication is locked, the LOCK LED will
be illuminated. Pressing any W
touch pad will display actual temperatures. Set
temperatures cannot be changed.
Lock LED
The lock feature will be restored in the event of a
power disruption.
Showroom Mode
Showroom Mode disables the cooling system.
To enter Showroom Mode (on some models), press
any pad on temperature display, and then press
F C and R
REEZER OLDER EFRIGERATOR
pads for 3 seconds, (control beeps once).
To exit, unplug the refrigerator for 3 seconds, and
then reconnect power.
pad is pressed. When
or C
ARMER OLDER
W touch
ARMER
Defrost Cycle
The refrigerator utilizes an adaptive defrost cycle
that operates a glass-enclosed heater to remove
frost from the evaporator. The defrost cycle
has changed from 60 hours adaptive defrost to
anywhere between 8 and 96 hours adaptive defrost.
The control board determines the length of time the
heater is energized. It does this by monitoring the
defrost heater relay mounted on the main board.
Once the temperature of the thermistor reaches
50°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.
Note: Refer to Pub# 31-9062 for information about
basic adaptive defrost.
Liner Protection Mode
The refrigerator incorporates a liner protection
mode for the freezer section. The freezer evaporator
and ice box fans will start and run on low speed if
any door or drawer has been open for 3 minutes.
Air will circulate into the fresh food section if the
damper is in the open position.
This mode is controlled by 2 timers. Timer #1
monitors door/drawer-open time. A 3-minute door/
drawer-open count begins when a door/drawer is
opened. If 3 minutes elapse before the door/drawer
is closed, the liner protection mode will become
active. Once the door/drawer is closed, timer #1
resets and liner protection mode goes into standby.
In standby, normal fan operation resumes and timer
#2 begins a 3-minute door/drawer-closed count. If
3 minutes elapse without a door/drawer opening,
liner protection mode will completely deactivate. If
a door/drawer is opened within the timer #2 door/
drawer-closed count, the remaining time in the
door/drawer-closed count will be deducted from the
timer #1 door/drawer-open count.
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