Theory Of Operation - KitchenAid KSSC36FKB00 Technical Education

Power
On/Off
OVERVIEW
The KitchenAid Built-In Refrigerator Constant
Flow Temperature Management System uses
two thermistors to monitor temperature changes
inside the refrigerator and freezer compart-
ments. The electronic control manages the
operation of the variable capacity compressor
(VCC), a variable speed evaporator fan motor,
and a variable position air door. The air door
allows independent temperature control of the
refrigerator and freezer compartments.
The electronic control seeks the most efficient
means possible to maintain temperatures as it
controls the operation and speed of the com-
pressor and the evaporator fan motor. Higher
fan speed is used before increasing the com-
pressor speed to minimize power consump-
tion. A nearly constant run time is sought at the
lowest possible fan and compressor speed.
Freezer temperatures can be set from 9°F to
–9°F (–13°C to –23°C). Refrigerator tempera-
tures can be set from 46°F to 32°F, (8°C to
0°C).
The Adaptive Defrost Control (ADC) portion of
the electronic control utilizes "pulsed defrost"
technology to perform the defrost function (see
page 3-4).

THEORY OF OPERATION

Warmer
FREEZER
SELECT
Colder
THE ELECTRONIC TEMPERATURE CONTROL PANEL
Warmer
REFRIGERATOR
°C
Colder
The electronic control monitors the water valve
for total elapsed time and gallons of water
used. The number displayed on the Water
Filter Indicator (WFI) is the percentage of filter
usage remaining.
The numeric display can be set for Fahrenheit
or Celsius and displays the actual tempera-
tures. The display range for the refrigerator is
from 27°F to 70°F. The normal freezer display
range is from –9°F to 70°F. Temperatures
above or below these limits will be displayed at
the corresponding temperature limit. During
Max Cool, the freezer display will read –10°F,
and the refrigerator will read 32°F.
The display will show the temperature setting
any time the actual temperature is within ±6°F
of the customer setting. This will prevent con-
cern over temperature fluctuations when the
doors are opened. Press the temperature ad-
justment key to view the current temperature
setting, or to change the setting. When the
temperature adjustment key is used to change
the temperature setting, the display will brighten
for 5 seconds.
Available features include:
• Water Filter Indicator
• Max Cool
• Over-Temperature Alarm
• Holiday Mode
3-1
WATER FILTER
RESET
PERCENT LEFT