This product may contain chemicals known to the state
of California to cause cancer or reproductive harm.
Customer Care
The model and serial number are printed on the enclosed
product registration card. Both numbers are also listed on
the product rating plate. Refer to page 4 for rating plate
location. For warranty purposes, you will also need the date
of installation and name of your authorized Sub-Zero dealer.
Record this information below for future reference.
If your product ever needs attention, be sure to use a
Sub-Zero factory certied service provider recommended
by our customer care center, or select one from our list of
providers available at subzero.com/locator. All factory certied service providers are carefully selected and thoroughly
trained by us.
SERVICE INFORMATION
Model Number
Serial Number
Date of Installation
Certied Service Name
Certied Service Number
Authorized Dealer
Dealer Number
Important Note
To ensure this product is installed and operated as safely
and efciently as possible, take note of the following types
of highlighted information throughout this guide:
IMPORTANT NOTE highlights information that is especially
important.
CAUTION indicates a situation where minor injury or product
damage may occur if instructions are not followed.
WARNING states a hazard that may cause serious injury or
death if precautions are not followed.
IMPORTANT NOTE: Throughout this guide, dimensions in
parentheses are millimeters unless otherwise specied.
2 | Sub-Zero Customer Care 800.222.7820
Thank You
Thank you for your purchase. We look forward to being part of your home for decades to
come. As a third-generation family-owned company, we take a very personal stake in the
preservation of your family’s food. We built our business and our reputation on helping
families serve the freshest food possible.
With your purchase, you receive one of the strongest warranties in the appliance industry.
Take a moment to read the full warranty statement on page 19. It’s also important to
register your Sub-Zero to ensure that you don’t miss out on exclusive owner benets,
such as; assurance that you will be taken care of in the unlikely event that service
becomes necessary during the warranty period, and a proof-of-purchase record in case
of a home insurance claim. You may register by one of the following options:
• Mail in the completed Sub-Zero product registration card.
• Register online at subzero.com/register and create a personalized My Sub-Zero/Wolf
account using the serial number on your product.
• Register by phone by calling Sub-Zero Customer Care at 800-222-7820.
As a Sub-Zero owner, you can count on ongoing support, day in and day out. Our customer care center is available 24 hours a day, seven days a week and staffed by knowledgeable product experts at our factory in Madison, Wisconsin. Should the need arise,
simply call 800-222-7820 and speak with one of our product experts. They will help
troubleshoot any issues you might have.
We are condent this guide will answer your questions about the features, operation, and
maintenance of your Sub-Zero, but if you have additional questions, please contact us at
800-222-7820 or visit us online at subzero.com.
subzero.com | 3
BUILT-IN FEATURES
Built-In Features
FEATURE
1
Product Rating Plate
2
Electronic Control Panel and Display
3
Freshness Cards
4
Door Shelves
5
Dairy Compartment
6
Refrigerator Storage Drawers
7
High-Humidity Crisper Drawer
8
Glass Shelves
9
Freezer Baskets
10
Ice Container
11
Air Purication System
12
Water Filtration System (behind grille)
13
Automatic Ice Maker
14
Ice and Water Dispenser (dispenser models)
15
Condenser (behind grille)
PG
15
12
2
5
6
6
6
6
6
6
7
7
8
9
10
10
13
2
11
6
7
13
10
1
5
4
8
3
9
Over-and-under model.
15
12
1
13
10
4
9
Side-by-side model with internal dispenser.
2
5
11
14
8
3
7
6
4 | Sub-Zero Customer Care 800.222.7820
ELECTRONIC CONTROLS
Control Panel
FUNCTION
LIGHTSTurns interior accent lighting on or off for glass
door models.
ICE MAKER Turns power to ice maker on or off. Use to disable
ice maker during extended vacations.
MAX ICEActivates or deactivates max ice feature which
increases ice production 40% for a 24-hour period.
COLDER
WARMER
PURE AIRActivates or deactivates air purication system.
ALARMActivates or deactivates door alarm. An audible
POWERTurns unit on or off. When power is off, ‘OFF’ will
Adjusts tem per ature in one-degree increments.
Combination units have separate temperature controls for refrigerator and freezer. Temper atures are
preset at 38°F
chime indicates door has been left ajar for more
than 60 seconds.
appear in control panel display. Turning power off at
the control panel eliminates the need to unplug or
turn power off at the circuit breaker during service
or extended vacations.
(3°C) and 0°F (-18°C).
Display
INDICATOR
Illuminates or ashes when electronic control system
has detected a temperature or ice maker problem, or if
condenser needs to be cleaned.
Illuminates when air purication system is activated
and ashes when cartridge needs to be replaced.
After the cartridge has been replaced, touch and hold
PURE AIR on the control panel for 5 seconds to
reset.
Illuminates when water lter needs to be replaced.
Illuminates when ice maker system is activated.
Illuminates when max ice feature is activated.
Illuminates when door alarm is activated.
Illuminates when accent lighting is activated for glass
door models.
Control panel and display (model BI-30UG shown).
subzero.com | 5
STORAGE
Keeping Food At Its Best
This Sub-Zero features a unique dual refrigeration system to
keep food fresher longer.
With the Sub-Zero dual refrigeration system, individual
refrigerator and freezer systems have been designed to
maintain accurate, consistent temperatures and proper
humidity levels for longer food life expectancy. Dual refrigeration eliminates transfer of fresh food odors to frozen food
and ice and does not freeze the moisture out of the air in the
fresh food section.
For handy tips and information on how to maximize
food freshness, refer to the freshness cards stored in the
refrigerator.
Refrigerator Storage
DOOR SHELVES
To remove a door shelf or the dairy compartment, lift from
the bottom and slide out. To reinstall, place in the desired
position and slide the shelf down onto the guides. Refer to
the illustration below.
IMPORTANT NOTE: If door opening is limited to 90°, door
shelves may need to be removed before removing a storage
drawer or glass shelf.
STORAGE DRAWERS
To remove a storage drawer, pull forward until the drawer
stops. Lift the front of the drawer slightly, then pull forward.
Refer to the illustration below.
For the French door model, drawer slides may need to be
pushed back manually to provide sufcient clearance for
removal.
To reinstall, push drawer slides in. Align the drawer with
slides and push back until it stops. Press down on the front
of the drawer to engage the slides.
GLASS SHELVES
To remove or adjust a glass shelf, tilt up, then lift up and out.
To reposition, insert shelf in the tracks along the back wall,
then lower the front until it locks into position. Refer to the
illustration below.
IMPORTANT NOTE: Use care when handling glass shelves to
prevent breakage or scratching the interior.
CAUTION
Glass shelves should warm to room temperature before
immersing in warm water.
Door shelf removal.
6 | Sub-Zero Customer Care 800.222.7820
Storage drawer removal.
Glass shelf removal.
STORAGE
Freezer Storage
FREEZER BASKETS
BI-36F and side-by-side models | To remove, pull forward
until basket stops. Pull the two metal clips located behind
the bottom two corners of the basket forward, then lift up
and out. Refer to the illustration below. To reinstall, push
drawer slides in. Align the basket with slides and push
back until it stops. Press down on the front of the basket to
engage slides.
IMPORTANT NOTE: To remove for models BI-36S, BI-42S,
BI-42SID and BI-42SD, the basket must be raised
and pulled through the opening in the door liner after
disengaging.
Over-and-under models | To remove the upper and lower
freezer baskets, lift up and out. Refer to the illustration
below. To reinstall, insert the lower basket into the four
corner retainers. Position the upper basket onto the side
rails and slide back until it clicks.
ICE CONTAINER
BI-36F and over-and-under models | To remove, pull con-
tainer forward until it stops, then lift out.
Side-by-side models | To remove, pull container forward
until it stops, then lift to clear the carrier assembly along the
back. Pull forward and out. Refer to the illustration below.
Dispenser models | To remove, pull container out partially,
then rotate and pull out. Refer to the illustration below.
Side-by-side models.
Dispenser models.
BI-36F and side-by-side models. Over-and-under models.
subzero.com | 7
OPERATION
Air Purication System
The advanced air purication system of Sub-Zero built-in
models reduces bacteria, odors and ethylene gas, which
causes premature ripening in fruits and vegetables. The
air purication cartridge has been factory installed and is
located inside the refrigerator, on the back wall.
To initiate air purication, touch PURE AIR on the control
panel.
The cartridge will last approximately one year. The
indicator will ash in the control panel display when the
cartridge needs to be replaced.
Replacement Sub-Zero air purication cartridges can be
ordered online at subzerowolfstore.com. For questions,
contact Sub-Zero customer care at 800-222-7820.
CAUTION
The air purication system complies with applicable
Federal requirements regarding incidental exposure
to ultraviolet light. Lamp contains mercury. Manage in
accordance with disposal laws. Visit earth911.com or
call 800-222-7820.
AIR PURIFICATION CARTRIDGE REPLACEMENT
1 To access the air purication cartridge, grasp the outside
cover from the bottom and rotate upward. Refer to the
illustration below.
2 Grasp the black cover from the top and rotate down-
ward. The cartridge will pop out and can be removed.
3 Remove the new cartridge from packaging and insert
with connector pointing downward.
4 Once in position, close the black cover. Then rotate the
outside cover downward until it closes against the back
wall.
5 Once the cartridge has been replaced, touch and hold
PURE AIR on the control panel for ve seconds to reset.
The
indicator will appear in the control panel display
but not ash.
8 | Sub-Zero Customer Care 800.222.7820
Air purication cartridge.
OPERATION
WATER FILTER
RESET BUTTON
WATER
FILTER
Water Filtration System
The water ltration system of Sub-Zero built-in models
supplies ltered water to the ice maker and water dispenser
(dispenser models) to produce great-tasting water and ice.
IMPORTANT NOTE: When using the water ltration system
for the rst time and after lter replacement, it is necessary to clear any air from the system and allow the lter to
assist in cleaning the water lines. For non-dispenser models,
discard the rst two full containers of ice. For dispenser
models, dispense several glasses of water for a period of
two minutes.
If the water ltration system will not be utilized, it can be
placed in water lter bypass mode by removing the lter.
The lter is rated for 750 gallons
ever comes rst. The
(2839 L) or one year, which-
indicator will illuminate in the
control panel display when the lter needs to be replaced.
Replacement Sub-Zero water lters can be ordered online
at subzerowolfstore.com. For questions, contact Sub-Zero
customer care at 800-222-7820.
WATER FILTER REPLACEMENT
1 To access the water lter, pull out on the bottom edge
of the grille assembly and rotate upward.
2 To remove the old lter, rotate counterclockwise one-
quarter turn, then pull out. Refer to the illustration below.
It is normal for a small amount of water to drip when
the lter is removed. It should be wiped up with a paper
towel or cloth.
3 Remove the new lter from packaging and remove
plastic cap.
4 Insert the new lter into the manifold and turn clockwise.
5 Once the new lter has been installed, press and hold
the water lter reset button for ve seconds to reset.
Refer to the illustration below.
WATER FILTER
Water lter removal.
Water lter location.
subzero.com | 9
OPERATION
Ice Maker Operation
To initiate ice production, touch ICE MAKER on the control
panel. After initial start-up, discard the rst few batches
of ice. The ice may contain impurities from new plumbing
connections.
The ice maker will cycle (eight cubes) every two hours. If ice
is not used regularly it may fuse together. To avoid, discard
ice and allow ice maker to replenish.
Sabbath
This appliance is certied by Star-K to meet strict religious
regulations in conjunction with specic instructions found
on www.star-k.org.
To initiate Sabbath mode, while the unit is on, touch POWER
on the control panel. ‘OFF’ appears in the control panel
display. Touch and hold POWER for 10 seconds until ‘SAb’
appears in the display indicating Sabbath mode has been
initiated. Lights, ice maker, door alarm and dispenser (if
applicable) will be disabled. To return to normal operating
conditions, touch POWER.
Ice and Water Dispenser
The rst time the water dispenser is used, purge the water
system and storage tank for three minutes. This will clear
any air in the system, along with impurities from new
plumbing connections.
Initially, for water to dispense properly, press and hold
WATER or the water dispenser button until water ows from
the dispenser. It may need to be pressed for 60 seconds for
water to ll the internal reservoir tank.
The chilled water reservoir tank holds approximately 40 oz
(1.2 L) of ltered water. It may take several hours to chill the
water to refrigerator temperature during the original ll and
after a large amount of water is dispensed.
CAUTION
Limit continuous ice and water dispenser operation to
seven minutes or less.
10 | Sub-Zero Customer Care 800.222.7820
OPERATION
BULK ICE
WATER
ICE
WATER
GRILLE
Ice and Water Dispenser
INTERNAL DISPENSER
For models BI-42SID and BI-48SID, the internal dispenser
is designed to accommodate a 16-oz
(.5 L) pint glass. Larger
containers may be used but may compromise the effectiveness of the dispenser. Drops of water may collect in the
removable water grille located directly below the dispenser.
Refer to the illustration below.
FUNCTION
ICEPress and hold to dispense ice.
WATERPress and hold to dispense water.
For models with an internal water dispenser, the dispenser
is located inside the refrigerator on the left wall. Press a
glass against the dispenser to activate water ow. Water
ow will stop when the glass is pulled away. Refer to the
illustration below.
EXTERNAL DISPENSER
For large quantities of ice, a bulk ice dispenser is located
inside the refrigerator. Refer to the illustrations below.
Drops of water may collect in the removable water grille
located at the bottom of the glasswell. This is not a drain.
Do not pour water into the water grille.
FUNCTION
ICEPress and hold to dispense ice.
For metered ice, press and hold for 2 seconds.
Dispenser will meter and collect ice before
dispensing into the glass. If held longer, the cycle
repeats for more ice.
WATERPress and hold to dispense water.
LIGHTPress to cycle through lighting options; lights off,
lights on and control panel lights only.
Press and hold for 5 seconds to activate or deactivate the dispenser lock. Lock indicator will be
illuminated when dispenser is locked.
BULK ICEPress and hold to dispense large quantities of ice.
WATER DISPENSER
Internal ice/water dispenser. Internal water dispenser.
LOCK
INDICATOR
External dispenser.
ICE
WATER
LIGHT
WATER
GRILLE
Bulk ice dispenser.
subzero.com | 11
OPERATION
Interior Lighting
For glass door models, accent lighting can be turned on
and off by touching LIGHTS on the control panel. The
indicator will illuminate when accent lighting is activated.
FREEZER LIGHTING
Over-and-under models | Lighting is located in upper front
section of the freezer compartment. To remove the light
diffuser, gently compress the diffuser to release it from supporting guides.
Side-by-side models| Freezer basket lighting is located
above the ice container. To access the light bulb, remove
the ice container and push the carrier assembly to the back
of the unit. The bulb will be accessible under the xed shelf
in front of the ice maker.
Dispenser models | Lighting above the ice container
is accessible by removing the ice container. Refer to ice
container removal on page 7. Once the container has been
removed, remove the light diffuser as described in overhead
lighting. Lighting below the ice container is accessible by
removing the light diffuser. To remove, press the plastic
lip up and pull the diffuser out of the supporting guides.
Freezer basket lighting is located below the xed shelf on
the back wall of the freezer. To access the light diffuser, rst
remove the freezer basket below the xed shelf. To remove
the light diffuser and access the light bulb, gently compress
the diffuser to release it from supporting guides.
12 | Sub-Zero Customer Care 800.222.7820
CARE RECOMMENDATIONS
Cleaning
INTERIOR CLEANING
For over-and-under and side-by-side models, the refrigerator or freezer may be disabled without disrupting the
other section. To disable a section, touch POWER. Touch
and hold WARMER for the section being disabled, continue
to hold and touch POWER. Double dashes will appear in the
control panel display. Repeat to turn the section back on.
To clean interior surfaces and all removable parts, wash with
a mild solution of soap, water and baking soda. Rinse and
dry thoroughly. Avoid getting water on lights and control
panel.
CAUTION
Do not use vinegar, rubbing alcohol or other alcoholbased cleaners on any interior surface.
STAINLESS STEEL EXTERIOR
Use a nonabrasive stainless steel cleaner and apply with a
soft lint-free cloth. To bring out the natural luster, lightly wipe
surface with a water-dampened microber cloth followed by
a dry polishing chamois. Always follow the grain of stainless
steel.
CONDENSER CLEANING
CAUTION
Before cleaning the condenser, turn power off at the
control panel. Wear gloves to avoid injury from sharp
condenser ns.
The condenser is located behind the ip-up grille. To
access, pull out on the bottom edge of the grille and rotate
upward. Use a soft bristle brush and vacuum to remove
dust and lint from the condenser. Clean the condenser every
three to six months. Refer to the illustration below.
IMPORTANT NOTE: To avoid damaging condenser ns,
vacuum in the direction of the ns.
CAUTION
Failure to clean the condenser could result in temperature loss, mechanical failure or damage.
VACATIONS
For extended vacations, turn power off at the control panel.
Empty the unit and block doors open slightly to let fresh
air in and keep interior dry. Water lter should be replaced
before start up.
CONDENSER
Condenser location.
subzero.com | 13
TECHNICAL DATA
Sub-Zero Water Filtration System Data
REPLACEMENT CARTRIDGE (4204490)
Tested and certied by NSF International against NSF/ANSI Standard 42 for the reduction of Chlorine Taste & Odor,
Particulate Class I; and against NSF/ANSI Standard 53 for the reduction of Lead, Mercury, Atrazine, Benzene, Carbofuran,
1,4-dichlorobenzene, Lindane, Toxaphene, Turbidity, Cysts and Asbestos.
This system has been tested according to NSF/ANSI 42/53 for reduction of the substances listed below. The concentration of the indicated
substances in water entering the system was reduced to a concentration less than or equal to the permissible limit for water leaving the
system, as specied in NSF/ANSI 42/53.
OPERATING SPECIFICATIONS
Capacity: certied for up to 750 gallons (2,838 L); up to twelve months
Pressure Requirement: 35 – 120 psi (2.8 – 8.2 bar)
Temperature: 33 – 100°F (0.6 – 38°C)
Flow Rate: 0.78 gpm (2.9 Lpm)
**Based on the use of Cryptosporidium Parvum oocysts † Fibers greater than 10 μm in length
Concentration
At least 10,000
particles/ml
7
to 108 bers/L
Inuent Challenge
NSF
Average Inuent
Concentration
5,700,000/ml30,583/ml69,000/ml99.46%98.78%≥ 85%
†
155 MF/L<1 MF/L<1 MF/L>99.99%>99.99%>99%
Product Water Concentration% Reduction
Max Permissable
Product Water
ConcentrationSubstanceAverageMax EfuentAverage Minimum
SPECIAL NOTES
• Replacement Sub-Zero water lter cartridges can be ordered online
at subzerowolfstore.com. For questions, contact Sub-Zero customer
care at 800-222-7820.
• Change lter cartridge at least every twelve months. High sediment
areas may require more frequent lter cartridge replacement.
• Installation and operation instructions, parts and service availability,
and standard warranty are included with the product when
shipped.
• Replace water lter cartridge when the lter indicator is lit or when
water ow becomes too low. Use replacement water lter cartridge
part number 4204490. Replacement lter pricing information can be
found at subzero.com.
• Do not use with water that is microbiologically unsafe or of unknown
water quality without adequate disinfection before or after the
system.
• Systems certied for cyst reduction may be used on disinfected
waters that may contain lterable cysts.
• This system must be installed, operated, maintained and lters
replaced as required in order for the product to perform as advertised.
• Note that while the testing was performed under standard labora-
tory conditions, actual performance may vary. The contaminants
or other substances removed or reduced by this water treatment
system are not necessarily in your water.
Illuminated. Touch POWER to turn unit off. Verify
condenser area is clean. Touch POWER to turn unit on.
If indicator is still illuminated, call Sub-Zero customer
care at 800-222-7820.
Flashing with audible chime. Contact Sub-Zero factory
certied service.
Flashing. Replace air purication cartridge. Also,
replace cartridge if there is an odor inside unit.
Flashing. Replace water lter. Also, replace lter if ice
tastes bad, is discolored, ice cubes are small or if water
ow from dispenser is slow.
Flashing with audible chime. Door has been left ajar for
more than 60 seconds. Close door.
UNIT OPERATION
No lights or cooling.
• Verify power is on.
• Verify electrical power to unit and home circuit breaker
is on.
No lights in refrigerator or freezer.
• Door/drawer may have been left ajar which has disabled
lights to eliminate excess heat. If lights are out, close
door/drawer for one hour. If lights are still out, contact
Sub-Zero factory certied service.
• LED interior lighting must be replaced by Sub-Zero
factory certied service.
Frost, condensation or ice build up inside unit.
• Verify condenser is clean.
• Verify door is closing properly.
• Verify door has not been left ajar.
• Verify door gasket does not have rips or tears. If it does,
contact Sub-Zero factory certied service.
• If icing is heavy, turn unit off and use a hair dryer to melt
ice. Hair dryer should be set on low and kept moving
at all times. Once ice has melted, wipe up water with a
cloth or paper towel.
High temperatures, unit runs excessively or unit giving off
too much heat.
• Verify condenser is clean.
• Verify door is closing properly.
• Verify door has not been left ajar.
• Increased ambient temperatures may cause compres-
sors to run longer.
• If temperature display shows 38° and 0°, but is not
cooling, unit may be in showroom mode. Contact
Sub-Zero Customer Care at 800-222-7820.
16 | Sub-Zero Customer Care 800.222.7820
TROUBLESHOOTING
Troubleshooting
ICE PRODUCTION
No ice.
• Verify
• Verify ice maker has been on for at least 24 hours.
• Verify freezer temperature near 0°F.
• Verify ice container is properly installed.
• Verify ice maker arm in down position.
• Verify water is being supplied to unit.
• Verify water lter has been replaced within the last 12
months and installed properly.
• Verify water lter has been removed if a reverse osmosis
ltration system is being utilized.
• Verify
ICE and ICE MAKER on the control panel simultaneously.
Blue or green ice.
• Possible copper supply line corrosion. Contact plumber
to clean or replace.
indicator appears in control panel display.
indicator is not ashing. If ashing, touch MAX
ODOR
• Unit should be cleaned before using for the rst time.
This will clear any odors that may have been trapped
during shipping.
• Replace air purication cartridge.
• Clean unit and shelving thoroughly.
• Uncovered food could create odor which may require
cleaning.
• Remove and clean drain pan located behind kickplate,
and reinstall.
Black ecks in cubes.
• Stop use and contact Sub-Zero factory certied service.
Bad taste.
• Defrost freezer and clean with soap and water.
• Place coffee grounds or charcoal briquettes in freezer to