Sub-Zero Built-in Series Assembly

Electronic Control System
3-23
#7019014 - Revision A - October, 2010
Built-In (BI) Series
Built-In (BI) Series
Additional Regulating of Refrigerator Compartment Temperatures:
Details of Controlling the Refrigerator Drawers Temperature
The refrigerator zone contains a diverter behind the evaporator cover, below the evaporator and just above the
refrigerator drawers. At the bottom of the evaporator cover is a series of holes and an air diverter near the location
of the diverter. The refrigerator air is drawn from the compartment and pushed down through the evaporator, some
air is diverted through the holes in the evaporator cover to the upper refrigerator compartment and some is allowed
past the diverter. Since cold air sinks, this cooling method allows for the drawers to remain approximately 2°F (1°C)
colder than the rest of the com-
partment. However, if the com-
partment thermistor detects
temperatures below 35°F (2°C),
the defrost time is extended
slightly to avoid freezing tem-
peratures in the drawer area.
NOTES:
• During Sabbath Mode the
lighting system is disabled
so the evaporator fan may be
observed running when the
door is open.
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/WHITE
BROWN
YELLOW
WHITE
REF
EVAPORATOR FAN
FREEZER EVAPORATOR FAN
M
M
FLOW
METER
THERMISTER FREEZER EVAP
THERMISTER FREEZER CABINET
THERMISTER REF CABINET
THERMISTER REF EVAP
BROWN
BLACK/WHITE
WHITE/BLACK
BLUE
BROWN
BLUE
BROWN
YELLOW
RED
YELLOW/BROWN
BLUE/WHITE
BROWN
BLUE
BLUE
BROWN
BLUE
WHITE
MAIN CONTROL BOARD
16
1
17
1
P18
3
P6
P15
P16
85
P14
1164
P6
P9
P8 P7
P5
P2
P3
P1
DEFROST HTR
COMP2
COMP1
MAIN LIGHTS
L1
NEUTRAL
L1
EXERNAL
DEVICE
KEYPAD
LOW VOLTAGE
HIGH VOLTAGE
Figure 3-41. Signal Trace Schematic: Drawer Area Temperature Control
1. Fan cycles on and off dur-
ing normal operation, but if
temperatures fall below 35°F
(2°C), fan switches off
2. Defrost is initiated, with an
extended “ON” time
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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)