Sub-Zero Built-in Series Assembly

Electronic Control System
3-31
#7019014 - Revision A - October, 2010
Built-In (BI) Series
Built-In (BI) Series
Monitor Compressor Run Duration, Displays If Service is Needed
The microprocessor observes the changing state of the compressor relays on the control board to determine the
length of compressor run time (See Figure 3-50). Other than during initial pull down, if a compressor runs 100%
(Freezer = 6 hours / Refrigerator = 4 hours), five consecutive times, a fault code is logged, defrost is initiated, and
the service icon will flash. If approximately twenty-four (24) hours worth of 100% run periods occur, and the com-
partment temperature does not fall to at least the average of the set point and low off-set temperature (and the door
is not opened during the last run period), then the service icon will flash and the alarm will chime (See Figure 3-51).
NOTES:
• If the unit is ever switched OFF then back ON, compressors will not energize for at least three (3) minutes. This
minimum OFF time is used to protect the compressor and its electricals.
• To clear fault indicators and Fault Codes the problem must be corrected, then press the ALARM key for fifteen
(15) seconds. Failure to clear Fault Codes will result in the highest priority fault indicator reappearing in the LCD
when the unit is
switched back ON.
Figure 3-50. Signal Trace Schematic: Monitoring Compressor Run Times
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
PURE AIR WARMER COLDER WARMER COLDER ALARM POWER MAX ICE ICE MAKER LIGHTS
Figure 3-51. the Service Icon Flashing & Alarm Chiming = Service Needed Immediately
Power to compressors
monitored; fault code
logged if 100% run
observed and service
icon appears; if sever-
al 100% runs occur,
service icon flashes
and alarm chimes
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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)