PRO 48 USE & CAR E GUIDE
Caring for your Sub-Zero and everything in it.
Contents
PRO 48 Refrigeration . . . . . . . . . . . . . . . . . . . . . . . . . . 3
PRO 48 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
PRO 48 Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
PRO 48 Use & Care . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Keeping Food at Its Best . . . . . . . . . . . . . . . . . . . . . . 15
Food Storage Recommendations . . . . . . . . . . . . . . . 19
Water Filtration System Performance Data . . . . . . . . 25
California Certification . . . . . . . . . . . . . . . . . . . . . . . . 26
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . 27
Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Sub-Zero Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Features and specifications in this guide and on the website are subject to change at any time without notice. Check our website, subzero.com, for the most up-to-date specifications.
SUB-ZERO® is a registered trademark of Sub-Zero, Inc.
Important Note
To ensure the safe and efficient use of Sub-Zero equipment, please take note of the following types of highlighted information throughout this guide:
IMPORTANT NOTE highlights information that is especially relevant to a problem-free installation.
CAUTION signals 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.
PRO 48 Refrigeration |
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Thank You
Thank you for purchasing your new Sub-Zero PRO 48 unit. With Sub-Zero, you can rely on a 60-year tradition of quality and reliability.
Built in to cabinetry or free-standing, the PRO 48 is just the latest example of Sub-Zero pushing food preservation to new heights. And of course, the PRO 48 still meets rigorous Department of Energy standards for residential use. Featuring a glass door on model 648PROG or top-to-bottom stainless steel on model 648PRO. The PRO 48 brings together the latest technology and finest features in home refrigeration to give you the freshest food possible.
Your Sub-Zero is protected by a warranty that is one of the finest in the industry. Take a moment to read the warranty statement on page 31 and refer to it should service become necessary.
This Use & Care Guide will answer most of your questions about the features, operation and maintenance of your PRO 48 unit. If you have questions that are not addressed here, call Sub-Zero Customer Service at 800-222-7820 or visit our website, subzero.com.
Dual Refrigeration
The PRO 48 continues the Sub-Zero tradition of superior quality and reliability. Sub-Zero pioneered the development of our dual refrigeration system, giving you optimum fresh and freezer food storage in ideal self-contained sections. Both refrigerator and freezer maintain accurate, consistent temperatures. Dual refrigeration keeps your food fresh longer than any other system available.
With dual refrigeration, the freezer maintains a constant temperature within one degree of the temperature you set within our range of -5˚F (-21˚C) to +5˚F (-15˚C), without unwanted moisture and odor from the refrigerator. Similarly, you can adjust the refrigerator temperature within a range of 34˚F (1˚C) to 45˚F (7˚C), for proper humidity levels tailored for longer food life expectancy.
The dual refrigeration system also means there is no transfer of fresh food odors to frozen food or ice. The Sub-Zero system does not freeze the moisture out of the air in the fresh food section.
Sub-Zero dual refrigeration is also more energy efficient than old-fashioned single refrigeration systems. When the refrigerator is used frequently during the day it does not require the freezer to circulate its very cold, dry air to the refrigerator. Instead, the refrigerator uses moist air to keep fresh foods fresh and energy use minimal.
PRO 48 Features |
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PRO 48 Features
•Can be built in or, with the free-standing accessory kit, used in a free-standing application.
•Dual refrigeration—two compressors and three evaporators keep foods fresher longer and prevent odor transfer.
•Exterior temperature display with easy-to-read digital readouts, accurate within one degree of your preset temperatures.
•Microprocessor and interior control panel with up-front touch controls monitor pattern-sensing defrost and automatic service alerts.
•Holiday mode—power down one or both sides for extended periods or just the weekend.
•Slide-out stainless steel bins—two versatile, removable bins hold small items and fit neatly under any shelf.
•Crisper drawer is a touch-and-glide crisper with a tight-seal glass lid that gives vegetables generous humidity.
•Drawers with dividers help you enjoy full access to food with adjustable, removable, and interchangeable drawer dividers.
•Automatic ice maker lets you retrieve filtered ice from a stainless steel bucket.
•Shelves are cantilevered and spill-proof, with stainless steel trim (refrigerator); adjustable, removable and 100% stainless steel (freezer).
•Alarm with an audible beep lets you know when doors or drawers are left ajar.
•Water filter is easy to replace and is just behind the pop-up grille, for ice as pure as it is fresh.
•Easy-access grille pops up with a simple pull (no tools needed) to reveal the water filter and condenser for cleaning.
•Stainless steel construction and classic finish (inside and out) for professional strength and beauty.
•Advanced lighting—top LED lights bathe upper compartments in a soft glow; on the refrigerator side, channeled sidewall LEDs can even serve as door area night lights (night light option available on model 648PROG only).
•Triple-pane, UV-resistant glass—specially treated glass offers convenient visibility while filtering harmful rays and saving energy (model 648PROG only).
•For installations at or above 5,000' (1524 m) in elevation, high altitude glass is available as a special order.
•Certified by Star-K to meet religious regulations.
•UL approved for US and Canada.
•Sub-Zero products are covered by a two, five and twelve year residential warranty (exclusions apply). See warranty details at the end of this guide.
•Auto-close system with an advanced hinge design lets doors finish closing easily and automatically.
These appliances are Star-K compliant to meet strict religious regulations in conjunction with specific instructions found on www.star-k.org.
PRO 48 Models |
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Models 648PRO and 648PROG
REFRIGERATOR/FREEZER
Stainless steel |
Dual refrigeration |
construction |
system |
Easy-access grille |
Exterior temperature |
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display |
Water filter |
Microprocessor and |
location |
interior control panel |
Holiday mode |
Alarm |
Advanced lighting |
Triple-pane, UV-resis- |
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tant glass (648PROG) |
Auto-close |
Adjustable spill- |
hinge system |
proof glass shelves |
Adjustable stainless |
Slide-out stainless |
steel shelves |
steel bins |
Location of rating |
Crisper drawer |
plate (open drawer) |
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Automatic ice |
Drawers with |
maker |
dividers |
Model 648PROG with glass door shown.
Model 648PRO
Model 648PROG with glass door
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Electronic Control System
The electronic control system of the PRO 48 monitors and accurately displays compartment temperatures within one degree of your pre-set temperatures. It also monitors the operation of the unit and lets you know if there is a problem. The interior control panel located at the top of the refrigerator door compartment has key pads to set temperatures and control functions of the electronic control system. Refer to the illustration below.
TEMPERATURE CONTROL
Your new PRO 48 was thoroughly inspected and tested before it was shipped from the Sub-Zero factory. Temperatures are preset at 38°F (3°C) in refrigerator compartments and 0°F (-18°C) in the freezer compartments.
There are three sets of WARMER and COLDER key pads on the interior control panel, two for the refrigerator compartments (upper door and lower drawers) and one for the freezer compartments. To adjust the temperature in any of the three compartments, depress the WARMER or COLDER key pad for that compartment. Digital temperatures for each of the three compartments are displayed in the exterior temperature display.
Temperature ranges are -5°F (-20°C) to +5°F° (-15°C°) in the freezer sections and 34°F (1°C) to 45°F (7°C) in the refrigerator sections. It is normal for temperatures to fluctuate slightly, depending on external influences such as an open door, the degree of humidity and room temperature.
IMPORTANT NOTE: Always allow 24 hours for compartments to reach the temperature you set.
EXTERIOR TEMPERATURE DISPLAYS
Electronic control system functions, such as digital temperatures and service indicators, are displayed in two exterior temperature displays located on the grille. The display in the lower left area of the grille shows the temperature and indicators for freezer compartments, and the display in the lower right gives readouts for refrigerator compartments. Refer to the illustrations below.
Exterior temperature displays.
Freezer Temperature |
Ice Maker |
Power |
Alarm |
Lights |
Refrigerator |
Controls |
On/Off |
On/Off |
On/Off |
On/Off |
Temperature Controls |
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Interior control panel. |
Upper |
Drawer |
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Compartment |
Compartments |
PRO 48 Use & Care |
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Electronic Control System
POWER ON/OFF
The POWER key pad on the control panel will shut off all electrical power to the unit. When the power is off, the OFF indicator light will be visible in the exterior temperature display. Using the POWER key pad means you do not have to shut off power at the circuit breaker or unplug the unit. The POWER key pad can be used for extended vacations.
It is possible to shut off power to one compartment of the PRO 48 for an extended period without affecting operation of the other compartments.
First, turn the unit off by depressing the POWER key pad. Then push and hold the WARMER key pad of the compartment you wish to shut down. Depress the POWER key pad to turn the unit back on. The disabled zone will be indicated with “--” in the exterior temperature display. Repeat the process to resume power to the compartment.
Be sure to shut off power to the unit at the circuit breaker during service.
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ALARM FEATURE
The PRO 48 has an alarm feature that lets you know with an audible beep if a door or drawer is left ajar. The alarm will sound after 30 seconds if a door or drawer is left open and will stop once the door or drawer is closed. This alarm can be disabled for cleaning or restocking by depressing the ALARM key pad on the control panel.
ICE MAKER ON/OFF
The ICE MAKER key pad on the control panel switches power to the ice maker system on or off. Use the ICE MAKER key pad to shut down ice maker operation during extended vacations. The ice bucket icon will be visible in the exterior temperature display if the ice maker system is on.
VISUAL SERVICE DISPLAY
The electronic control system monitors compartment and component temperatures as well as the ice maker system. If there is a temperature or ice maker problem, you will be alerted by a flashing SERVICE indicator light in the exterior temperature display. This same SERVICE light will also flash if the condenser needs cleaning.
SABBATH MODE (STAR-K)
The PRO 48 features Sabbath mode for certain religious observances where lights and the ice maker need to be turned off.
To initiate Sabbath mode while the unit is on, press the POWER key pad on the control panel so that OFF is visible in the exterior temperature display. Then press and hold the POWER key pad for 10 seconds. This will turn the unit back on with lights and ice maker disabled. There will be four short beeps, indicating that the Sabbath mode has been set. To return the unit to normal operation, press and release the POWER key pad.
If you have questions about Star-K compliance, visit www.star-k.org.
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Refrigerator Storage
ADJUSTABLE GLASS SHELVES
The adjustable glass shelves of the PRO 48 upper refrigerator compartment are cantilevered and spill proof with stainless steel trim.
To remove a shelf, tilt the shelf up at the front, then lift it up and out of the tracks on the rear wall of the refrigerator. To replace a shelf, insert in the tracks with the front of the shelf raised slightly. As you push the shelf in, lower the front of the shelf until it locks into position. Refer to the illustration of the adjustable glass shelves below.
IMPORTANT NOTE: Always be careful handling glass shelves to prevent breaking the glass or scratching the interior.
ADJUSTABLE SLIDE-OUT BINS
The PRO 48 features two versatile, adjustable stainless steel slide-out bins that fit neatly under any refrigerator compartment shelf. The glass shelves have integrated rails that make it possible to position the slide-out bins in a variety of locations.
To remove the slide-out bin, simply pull the handle portion of the bin forward until it stops, lift it up and out of the rails mounted below the glass shelf. Refer to the illustration of the adjustable slide-out bin below.
Storage drawer with crisper lid.
CRISPER LID ASSEMBLY
The PRO 48 upper refrigerator drawer features a crisper lid to provide higher humidity in the drawer compartment. This assembly allows for easy access to the compartment and has a clear-view window for visibility of stored vegetables.
To remove the crisper lid assembly, pull the upper refrigerator drawer all the way out, raise the front edge of the crisper lid assembly up and pull out from the back. Refer to the illustration of the crisper lid above.
REFRIGERATOR DRAWER DIVIDERS
The PRO 48 refrigerator storage drawers give you full access to food with adjustable and removable dividers. The dividers are interchangeable between the upper and lower refrigerator drawer. Two long dividers run the full depth of the drawer, with shorter dividers that connect to the long dividers to compartmentalize the drawer.
To remove the short dividers, lift up and out of position from supports on the long dividers and sides of the drawer. The long dividers can also be removed by lifting up and out of position from drawer support tabs. Refer to the illustration of the storage drawer above.
Adjustable glass shelves. |
Adjustable slide-out bin. |
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Freezer Storage
ADJUSTABLE SHELVES
The adjustable shelves of the PRO 48 upper freezer compartment are cantilevered and 100% stainless steel.
The freezer shelves are repositioned the same way as the glass shelves in the refrigerator compartment. To remove or adjust the freezer shelves, first tilt the shelf up at the front, then lift it up and out of the tracks on the rear wall of the freezer.
To replace a shelf, insert in the tracks on the rear wall of the freezer with the front of the shelf raised slightly. As you push the shelf in, lower the front of the shelf until it locks into position.
ICE BUCKET REMOVAL
The automatic ice maker and stainless steel ice bucket are located in the lower freezer drawer.
To remove the ice bucket, pull the freezer drawer out until it stops, lift the ice bucket up and out of the drawer. The entire lower freezer drawer can now be used for more ice storage if necessary.
Storage Drawer Removal
The refrigerator and freezer storage drawers are removable for cleaning. The drawers have an automatic stop built in to prevent drawers from coming all the way out of the unit.
To remove, pull the drawer all the way out until it stops, lift up evenly on both sides of the drawer front and pull out. To reinstall, raise the front of the drawer and place onto the drawer slide tracks. Be sure to engage the front of the drawer slide with the drawer assembly. Refer to the illustration of the storage drawer removal below.
IMPORTANT NOTE: To reduce the weight of the drawer, be sure to unload the contents before removing the drawer.
Storage drawers are heavy. Be sure to keep your feet clear as you remove the drawer.
Storage drawer removal.
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Water Filtration System
The PRO 48 features a water filtration system that supplies filtered water to the ice maker to produce greattasting ice. The water filter has been factory installed behind the grille assembly.
It is important that the operation, maintenance and filter replacement requirements be carried out as scheduled. Refer to the following information on the water filter cartridge monitor.
IMPORTANT NOTE: If the unit has been turned off or the ice maker disabled for one month or longer, the water filter cartridge should be replaced once the unit and ice maker are back in operation.
IMPORTANT NOTE: Do not use with water that is microbiologically unsafe or of unknown water quality without adequate disinfection before or after the system. Systems certified for cyst reduction may be used on disinfected waters that may contain filterable cysts.
Refer to the performance data on page 25 for additional information regarding the water filtration system.
WATER FILTER CARTRIDGE MONITOR
The water filter cartridge is designed to last for up to one year of continuous use of the ice maker. The electronic control system monitors the life of the water filter cartridge and indicates when it needs to be replaced. An indicator that reads “REPLACE FILTER” will be visible in the left side exterior temperature display. Follow steps to replace the water filter cartridge on the following page.
Once the filter cartridge has been replaced, the control automatically resets the water filter life monitor and the “REPLACE FILTER” indicator will no longer be displayed.
Although it is designed to last for up to one year of use, the actual life of the filter cartridge may vary with water supply conditions. Therefore, it is recommended that the filter cartridge be replaced when the “REPLACE FILTER” indicator is displayed or if the ice cubes become hollow or smaller.
IMPORTANT NOTE: The warranty for the water filter cartridge supplied with the unit only covers defects in materials or workmanship and not replacement due to normal use.
Replacement Sub-Zero water filter cartridges (4204490) can be ordered by calling 800-222-7820 or online at subzerowolfstore.com.
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