Sub-Zero Built-in Series Assembly

Electronic Control System
3-19
#7019014 - Revision A - October, 2010
Built-In (BI) Series
Built-In (BI) Series
FUNCTIONS OF THE ELECTRONIC CONTROL SYSTEM
The following pages explain monitoring, regulating and controlling functions of the electronic control system. In most
cases signal traces on a model BI36U wiring schematic are used to show current flow for functions being explained.
Supply Power to the Lighting System
Power is supplied to the lighting system through the control board when the unit is switched ON by pressing the
POWER key. When a door is open, the corresponding normally closed light switch allows power to the lights in the
compartment (See Figure 3-37).
NOTES:
• Power to the light is monitored by the microprocessor to control the door ajar alarm feature.
• Power to the refrigerator lights is also monitored to help control the refrigerator evaporator fan and air purifier fan
operation. When the refrigerator door is open, power to the evaporator fan is interrupted.
• Power to the freezer lights is also monitored to help control the freezer evaporator fan and icemaker operation. If
the freezer door (or drawer) is open, power to the freezer evaporator fan and the icemaker is interrupted.
• If in Sabbath Mode, the lighting system is disabled.
Figure 3-37. Signal Trace Schematic: Lighting System
115 VOLTS
60 CYCLES
L1
NEUTRAL
N.O.
WATER FILTER SWITCH
P16
MAIN
CONTROL
BOARD
P1
3
P14
L1
L1
NEUTRAL
1164
P2
P15
85
P3
P6
P5
P6
P9
P8
P7
P18
DEFROST HTR
COMP2
COMP1
MAIN LIGHTS
N.C.
N.C.
FZ DOOR SWITCH
REF DOOR SWITCH
ISOLATION VALVE
660 Ω
WATER VALVE
160 Ω
M
IM
CONDENSER FAN MOTOR
CRISPER LIGHTS
REF LIGHTS
AIR FILTER LIGHT
FREEZER LIGHTS
FILL-TUBE HEATER
2300-2900 Ω
DEF HEATER
27.9-30.9 Ω
DEFROST TERMINATOR
REFRIGERATOR COMPRESSOR
STARTING RELAY
FREEZER COMPRESSOR
STARTING RELAY
PURPLE
WHITE
WHITE/BLUE
WHITE/BLUE
BLUE
WHITE
PURPLE
GRAY RED
PINK
YELLOW
BLACK
RED
WHITE/BLUE
TAN
BLUE
ORANGE
YELLOW
YELLOW
ORANGE/BLACK
GRAY/WHITE
ORANGE/BLACK
WHITE
RED/WHITE
WHITE/RED
TAN
PINK
GRAY
ORANGE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
TAN/WHITE
TAN /WHI TE
BROWN
YELLOW
WHITE
HIGH VOLTAGE
1. Power supplied to
lighting system
unless unit is
switched OFF, or in
Sabbath Mode.
2. Power to the lights
is monitored to help
control alarm, evap-
orator fan, air purifi-
er fan and icemaker
operation.
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Sub-Zero Built-in Series Specifications

General

Type	Built-in Refrigerator
Brand	Sub-Zero
Series	Built-in Series
Refrigeration Type	Dual Refrigeration
Total Capacity	Varies by model
Refrigerator Capacity	Varies by model
Freezer Capacity	Varies by model
Height	Varies by model
Finish Options	Stainless Steel, Custom Panel Ready
Lighting	LED
Shelving	Adjustable glass shelves
Water Filtration	Yes
Air Purification	Air purification system
Energy Star Qualified	Yes
Energy Star Certified	Yes
Door Bins	Adjustable
Configuration	Varies by model (e.g., Side-by-Side, Over-and-Under)
Smart Features	Varies by model (e.g., Wi-Fi connectivity, Mobile App Control)