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Sub-Zero Built-in Series Assembly

Sub-Zero Built-in Series
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After the water filter is replaced,
the filter reset button behind
the unit grille must be pressed
for five (5) seconds to clear the
filter icon from the LCD and
reset the counters to zero (See
Figure 3-47).
NOTES:
If a filter bypass plug is
installed, the counters must
be disabled by pressing the
reset button five (5) times in
seven (7) seconds.
No water will flow to the ice
maker and water dispensing
systems if the water filter or
bypass plug are removed.
Electronic Control System
3-29
#7019014 - Revision A - October, 2010
Built-In (BI) Series
Built-In (BI) Series
Monitor Water Valve Flow Meter, Regulate Water Fill Volume and Display when New Water Filter is Needed
The microprocessor observes the volumetric flow through the water valves via a low DC voltage signal from the flow
meter, with every one revolution of the turbine inside the flow meter equaling 0.02 oz (0.5 ml) (See Figure 3-47).
For an icemaker fill, the electronic control instructs the valve to remain open long enough to deliver approximately
3.5 oz (105 ml) of water. This timeframe will vary depending on the inlet water pressure and how long the filter
has been in use.
For those units with a water
dispenser, the electronic con-
trol supplies power to the
water valve whenever the
WATER key is pressed.
In both cases, the electronic
control keeps track of the
amount of water delivered to
the filter via the flow meter.
When it has calculated that
two-hundred and thirty-five
(235) gallons of water have
passed through the filter, or if
eight-thousand seven-hundred
and sixty (8760) hours have
elapsed since the last time the
filter reset button was pressed,
then the water filter icon in the
LCD will illuminate (See Figure
3-47A), indicating it is time to
change the filter.
Figure 3-47. Signal Trace Schematic: Flow Meter Monitored; Filter Reset
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 3-47A.
Water Filter Icon
Appears = Time to
Replace Water Filter
After 1 year (235 gallons) press
reset button for 5 seconds
Water flow meter observed
by microprocessor for 235
gallons
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Sub-Zero Built-in Series Specifications

General IconGeneral
TypeBuilt-in Refrigerator
BrandSub-Zero
SeriesBuilt-in Series
Refrigeration TypeDual Refrigeration
Total CapacityVaries by model
Refrigerator CapacityVaries by model
Freezer CapacityVaries by model
HeightVaries by model
Finish OptionsStainless Steel, Custom Panel Ready
LightingLED
ShelvingAdjustable glass shelves
Water FiltrationYes
Air PurificationAir purification system
Energy Star QualifiedYes
Energy Star CertifiedYes
Door BinsAdjustable
ConfigurationVaries by model (e.g., Side-by-Side, Over-and-Under)
Smart FeaturesVaries by model (e.g., Wi-Fi connectivity, Mobile App Control)

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