USER GUIDE & SERVICE MANUAL
®
Model: VCWC524-SG33A
USER GUIDE & SERVICE MANUAL
Table of Contents
Click on any section below to jump directly there
Intro
Safety
Safety and Warning
Disposal And Recycling
Installation
Environmental Requirements
Electrical
Cutout & Product Dimensions
Anti-Tip Bracket
General Installation
Grille Installation
Door Swing
Door Stop
Door Adjust
Interior Adjustments
Maintenance
Cleaning
Cleaning Condenser
Extended Non-Use
Operating Instructions
First Use
Control Operation
Airflow and Product Loading
Service
Troubleshooting
Wire Diagram
Product Liability
Parts
R600a Specifications
System Diagnosis Guide
Compressor Specifications
Troubleshooting Extended
Control Operation - Service
Thermistor
Defrost
Remove Fan and Cover
Warranty
USER GUIDE
Introduction
WELCOME TO VIKING COMMERCIAL
Congratulations on your purchase!
Viking is synonymous with decades of innovation and craftsmanship. Our industry-leading appliances set the standards.
Delivering professional performance and stunning design. Our products have become the standard for elite chefs around the
world.
PRODUCT INFORMATION
Looking for additional information on your product? User Guides, Spec Sheets, and Product Warranty information are available
online at vikingrange.com/commercial.
PROPERTY DAMAGE / INDUSTRY CONCERNS
In the unlikely event property damage or personal injury is suspected related to a Viking Commercial product, please take the
following steps:
1. Customer Care must be contacted at +1.616.754.5601
2. Service or repairs performed on the unit without prior written approval is not permitted. If the units have been
alteredorrepairedintheeldwithoutpriorwrittenapproval,claimswillnotbeeligible.
GENERAL INQUIRIES
1260 E. Van Deinse • Greenville, MI 48838 •
+1.616.754.5601
Website: vikingrange.com/commercial
commercial@vikingrange.com
CONNECT WITH US
SERVICE & PARTS ASSISTANCE
Monday – Friday 8:00 am to 4:30 pm CST
+1.616.754.5601
Service Email: commercialservice@vikingrange.com
3
USER GUIDE
Safety and Warning
Safety and Warning
NOTICE
Please read all instructions before installing,
operating, or servicing the appliance.
Use this appliance for its intended purpose only and follow
these general precautions with those listed throughout this
guide:
SAFETY ALERT DEFINITIONS
Throughout this guide are safety items labeled with a
Danger, Warning, or Caution based on the risk type:
Danger means that failure to follow this safety
statement will result in severe personal injury or
death.
Warning means that failure to follow this safety
statement could result in serious personal injury
or death.
Caution means that failure to follow this safety
statement may result in minor or moderate
personal injury, property, or equipment damage.
This unit contains R600a (Isobutane) which is a
ammable hydrocarbon. It is safe for regular
use. Do not use sharp objects to expedite
defrosting. Do not service without consulting the
“R600a specications” section included in the
User Guide. Do not damage the refrigerant
circuit.
Service must be done by factory authorized
service personnel. Any parts shall be replaced
with like components. Failure to comply could
increase the risk of possible ignition due to
incorrect parts or improper service.
CALIFORNIA PROPOSITION 65
This product contains chemicals known to the
state of California to cause cancer and birth
defects or other reproductive harm.
www.P65warnings.CA.gov
This equipment is to be installed with adequate
backow protection to comply with applicable
federal, state and local codes.
This equipment is intended for the storage and
display of packaged products only.
If this refrigerator has a glass door, it is a display
refrigerator. Please see caution statement below:
This display refrigerator is not for the display of
potentially hazardous foods.
DANGER
!
DANGER
!
WARNING
!
CAUTION
!
DANGER
!
CAUTION
!
CAUTION
!
CAUTION
!
WARNING
!
4
USER GUIDE
Disposal and Recycling
Disposal and Recycling
RISK OF CHILD ENTRAPMENT. Before you throw
away your old refrigerator or freezer, take o
the doors and leave shelves in place so children
may not easily climb inside.
If the unit is being removed from service for disposal,
check and obey all federal, state, and local regulations
regarding the disposal and recycling of refrigeration
appliances, and follow these steps completely:
1. Remove all consumable contents from the unit.
2. Unplug the electrical cord from its socket.
3. Remove the door(s)/drawer(s).
DANGER
!
5
USER GUIDE
Environmental Requirements
Environmental Requirements
This unit is designed to operate between 50°F (10°C) and
100°F (38°C). Higher ambient temperatures may reduce
the unit’s ability to reach low temperatures and/or reduce
ice production on applicable models.
For best performance, keep the unit out of direct sunlight
and away from heat generating equipment.
In climates where high humidity and dew points are
present, condensation may appear on outside surfaces.
This is considered normal. The condensation will
evaporate when the humidity drops.
CAUTION
!
Damages caused by ambient temperatures of
40°F (4°C) or below are not covered by the
warranty.
6
USER GUIDE
Electrical
Electrical
WARNING
!
SHOCK HAZARD — Electrical Grounding
Required. Never attempt to repair or perform
maintenance on the unit until the electricity has
been disconnected.
Never remove the round grounding prong from
the plug and never use a two-prong grounding
adapter.
Altering, cutting or removing power cord,
removing power plug, or direct wiring can cause
serious injury, fire, loss of property and/or life,
and will void the warranty.
Never use an extension cord to connect power to
the unit.
Always keep your working area dry.
NOTICE
Electrical installation must observe all state and
local codes. This unit requires connection to a
grounded (three-prong), polarized receptacle
that has been placed by a qualified electrician.
The unit requires a grounded and polarized 115 VAC,
60 Hz, 15A power supply (normal household current). An
individual, properly grounded branch circuit or circuit
breaker is recommended. A GFCI (ground fault circuit
interrupter) is usually not required for fixed location
appliances and is not recommended for your unit because
it could be prone to nuisance tripping. However, be sure
to consult your local codes.
See CUTOUT & PRODUCT DIMENSIONS for recommended
receptacle location.
7
USER GUIDE
Cutout & Product Dimensions
Cutout & Product Dimensions
PREPARE SITE
Your U-Line product has been designed for either free-
standing or built-in installation. When built-in, your unit
does not require additional air space for top, sides, or
rear. However, the front grille must NOT be obstructed,
and clearance is required for an electrical connection in
the rear.
CAUTION
!
Unit can NOT be installed behind a closed cabinet
door.
CUTOUT DIMENSIONS
PRODUCT DIMENSIONS
REAR
FRONT
TOP
SIDE
1 3⁄8”
(35 mm)
6 ft (183 cm)
Power Cord
11 ¾”
(222 mm)
23
5⁄8”
(600 mm)
3 ½”
(89 mm)
33 11⁄16”
(855 mm)
28”
(711 mm)
1 7⁄8”
(48 mm)
18 15⁄16”
(481 mm)
24 ¾”
(629 mm)
21 1⁄16”
(535 mm)
24 1/4”
(616 mm)
22 15⁄16”
(583 mm)
24 13⁄16”
(630 mm)
4“ (102 mm)
17 1/2”
(445 mm)
4"
(102 mm)
7"
(178 mm)
24"
(610 mm)
23 7/8"
(607 mm)
34"
(864 mm)
Preferred location
for electrical outlet
is in adjacent
cabinet.
5/8"
(16 mm)
8
USER GUIDE
Anti-Tip Bracket
Anti-Tip Bracket
FLOOR MOUNTED ANTI-TIP INSTALLATION
1. Locate two anti-tip brackets included with the kit.
2. Place the unit into the area where it will be installed.
Check the door, sides, and top for a proper t. Also
test to make sure the door opens and closes freely.
3. Remove grille and place a mark on the oor at the
front of the unit. Also place a mark on the oor in the
center of the unit.
4. Remove the unit. Using a square, extend center line
“B” (see chart below). This line serves as the back
edge for the anti-tip brackets. From the center line,
measure “A” to the left and right. This line is the outer
edge of each bracket.
C
L
Back wall
Back of unit
Front of unit
Surrounding
area (Top view)
A
A
B
515 518 524
A 7 5⁄8” 9” 11 15⁄16”
B 22” 22” 22”
5. Place the anti-tip brackets on the oor against the line
drawn for the outer edge. Mark spots for the screw
holes.
C
L
Surrounding
area (Top view)
Drill holes and
mount anti-tip
brackets to floor
Back wall
Front
of
unit
Back
of
unit
A
A
B
6. Use a 1/8” drill to make two starter holes and fasten
the anti-tip brackets to the oor using the screws
provided.
7. Place the unit back into position, making sure the
feet engage the anti-tip brackets properly. Check
the alignment of the lines made on the oor in step
3 with the position of the front feet to ensure proper
positioning.
9
USER GUIDE
General Installation
General Installation
LEVELING INFORMATION
To comply with applicable federal, state and local
codes, this equipment may need to be caulked to
the oor.
1. Use a level to
conrm the unit is
level. Level should
be placed along top
edge and side edge
as shown.
2. If the unit is not level, adjust the legs on the corners of
the unit as necessary.
3. Conrm the unit is level after each adjustment and
repeat the previous steps as needed.
INSTALLATION TIP
If the room oor is higher than the oor in the cutout
opening, adjust the rear legs to achieve a total unit rear
height of
1⁄8” (3 mm) less than opening’s rear height.
Shorten the unit height in the front by adjusting the front
legs. This allows the unit to be gently tipped into the
opening. Readjust the front legs to level the unit after it is
correctly positioned in the opening.
INSTALLATION
1. Plug in the power/electrical cord.
2. Gently push the unit into position. Be careful not
to entangle the cord or water and drain lines, if
applicable.
3. Re-check the leveling, from front to back and side to
side. Make any necessary adjustments. The unit’s top
surface should be approximately
1⁄8” (3 mm) below
the countertop.
4. Install the anti-tip bracket.
5. Remove interior packing material and wipe out the
inside of the unit with a clean, water-dampened cloth.
1
Turn to Adjust
CAUTION
!
10
USER GUIDE
Grille Installation
Grille Installation
REMOVING AND INSTALLING GRILLE
WARNING
!
Disconnect electric power to the unit before
removing the grille.
When using the unit, the grille must be installed.
WARNING
!
DO NOT touch the condenser fins. The condenser
fins are SHARP and can be easily damaged.
Removing the grille
1. Disconnect power to the unit.
2. Loosen the two screws (1).
3. Remove grille (2) from unit.
Installing the grille
1. Align cabinet and grille holes and secure, but do not
over tighten grille screws (1).
2. Reconnect power to the unit.
1
2
11
USER GUIDE
Door Swing
Door Swing
Units have a zero clearance for the door to open 90°,
when installed adjacent to cabinets.
Stainless Steel models require 2-1/8" (54 mm) door
clearance to accommodate the handle if installed next to a
wall.
Wall
90°
Door Swing
2-1/8" Min.
(54 mm)
12
USER GUIDE
Door Stop
Door Stop
Your U-Line unit was shipped to you with the optional 90°
pin.
Your unit’s door(s) will open 115° straight from the
factory. If you would like the door stop at 90°, follow these
instructions.
NOTICE
If your unit is already undercounter, it will need
to be moved out to access the hinge.
1. Open door approximately 90°.
2. Slide hinge pin into hole as shown. Pin should slide into
place, stopping the door at 90°; if the pin does not go
into the hole shown, hold the door less than 90° open
and try again.
3. To fully seat the pin, tap it lightly with a hammer.
4. Carefully slide your unit back in place.
NOTICE
The pin can be removed to return the door swing
back to its original 115° swing by tapping the pin
out from the bottom of the hinge.
CLOSER
The door hinge has a self-closing feature that engages
when the door is open approximately 6” (150 mm) (about
25°).
13
USER GUIDE
Door Adjustments
CAUTION
!
Door Adjustments
DOOR ALIGNMENT AND ADJUSTMENT
Align and adjust the door if it is not level or not sealing
properly. If the door is not sealed, the unit may not cool
properly, or excessive frost or condensation may form in
the interior.
NOTICE
Properly aligned, the door’s gasket should be
rmly in contact with the cabinet all the way
around the door (no gaps). Carefully examine the
door’s gasket to ensure that it is rmly in contact
with the cabinet. Also make sure the door gasket
is not pinched on the hinge side of the door.
Do not attempt to use the door to raise or pivot
your unit. This would put excessive stress on the
hinge system.
Alignment and Adjustment Procedure
1. On top and bottom sufaces of door, slightly loosen
hinge bracket screws.
2. Square and align door as necessary.
3. Tighten Torx head screws on hinge.
TO REVERSE THE DOOR
1. Hold door to keep it from falling.
2. Remove top hinge pin.
3. Remove door by tilting forward and lifting door o
bottom hinge.
4. Remove both hinges and replace 6 screws in hinge
holes.
5. Remove hinge pin from bottom hinge and install in
left-hand bottom hinge.
Install bottom hinge:
Install bottom hinge with 3 screws.
Install top hinge and door:
Install top hinge with 3 screws.
Install door:
1. Rotate door 180
o
and set on bottom hinge.
2. Align door with hinge and install hinge pin.
Align and adjust the door:
Align and adjust the door (see DOOR ALIGNMENT AND
ADJUSTMENT)
Hinge Pin
Bracket
Bottom
Right Hinge
Bottom
Left Hinge
Hinge
Bracket
14
USER GUIDE
First Use
Temperature displayed reects actual
temperature inside unit.
Initial startup requires no adjustments. When plugged
in, the unit will begin operating under the factory default
settings. If the unit was turned o during installation,
simply press and the unit will immediately switch on. To
turn the unit o, press .
If the temperature displayed is dierent than selected, the
unit is progressing towards the selected temperature. Time
to reach set point varies based upon ambient temperature,
temperature of product loaded, door openings, etc. U-Line
recommends allowing the unit to reach set points before
loading.
NOTICE
First Use
15
USER GUIDE
Control Operation
Control Operation
CONTROL FUNCTION GUIDE
FUNCTION COMMAND NOTES
ON/OFF Press and release Unit will immediately turn On or OFF
Adjust Temperature Press or and release
When the display is ashing, press or to
adjust the set point temperature. Note: temperature
displayed is the actual temperature inside unit
Toggle between
º
F /
º
C Hold and for 5 seconds The display will change units
Leave interior light on
Press and release to leave interior
light on for 12 hours; press again to
deactivate
After 12 hours, factory default is restored; light will
turn on when door is open
Hide Display Hold hidden button and press
Display will turn o when door is closed. Unit will
continue to operate. Repeat command to turn on
display
Adjust light color
While holding press and release
to scroll through lighting options
Option Open Door Closed Door
00 White White
01 Blue Blue
02 White Blue
Light will be set at full intensity when door is open,
and 50% intensity when door is closed.
Enable Sabbath Mode
Press and hold for 5 seconds and
release
The
o
F /
o
C symbol will ash briey after 5 seconds.
Interior light and display will go dark and remain so
until user resets mode - unit continues to operate
Disable Sabbath Mode
Press and hold for 5 seconds and
release
Display and interior light return to normal operation
Showroom Mode Hold and for 5 seconds
The
º
F /
º
C symbol will ash. Display will be lit and
interior light will function. Unit will not cool. Repeat
command to return to normal operation
DOOR ALERT NOTIFICATION
When the door is left open for more than 5 minutes:
• A tone will sound for several seconds every minute
• will appear in display
• Closed door to silence alert and reset
Hidden
Button
16
USER GUIDE
Airow & Product Loading
Restricting airow may result in poor product
performance, product failure, and uneven internal
temperatures and may freeze contents.
• Do not block the front grille - no additional clearance
around sides, top or rear of unit is needed for ventilation
• Do not install behind a closed door
• When loading, leave space between internal fans, vents,
and side walls to allow air to circulate freely
NOTICE
AIRFLOW
External
PRODUCT LOADING
Bottles and cans come in many shapes and sizes. Not
all bottles and cans will t on every shelf and wine rack.
Larger diameter champagne and Magnum bottles only t
on wine racks when noted on the product specications.
When determining capacities U-Line uses typical 12 oz.
cans, 12 oz. bottles, 750 mL white wine and red wine
bottles shown below.
Airow and Product Loading
Typical Can
(12 oz)
4
(123 mm)
(66 mm)
2
27⁄32”
19⁄32”
Typical Bottle
(12 oz)
9”
5
2
7⁄16”
5⁄16”
(135 mm)
(64mm)
(229 mm)
Typical White
Wine Bottle
11
(298 mm)
(750 mL)
3
¾”
(184 mm)
(82 mm)
11
¼”
¼”
Typical Red
Wine Bottle
11
(302 mm)
8
3”
29⁄32”
¾”
(222 mm)
(750 mL)
(76 mm)
Typical
Champagne Bottle
(750 mL)
3 11⁄16”
7
¾”
11⁄16”
(299 mm)
(94 mm)
(195 mm)
11
Magnum Bottle
(1.5 L)
13
10
3
1⁄8”
(334 mm)
11⁄32”
(263 mm)
27⁄32”
(98 mm)
Internal
17
USER GUIDE
Interior Adjustments
Interior Adjustments
All models feature side mounted rack supports with 19
adjustment positions.
All Wine Refrigerator models ship with 5 racks designed
to hold the maximum number of typical white and red
wine bottles. Remove and reposition racks as desired to
accommodate a variety of bottle sizes and shapes.
Note: Do not exceed 52.8 lb (24 kg) per shelf when
loading.
WINE RACK ADJUSTMENT
Wine Rack Removal
1. Fully extend empty rack
2. Firmly grasp both sides of rack and lift front end of
rack slightly (about 1/4”) to center the pin in the slot.
3. Pull rack towards you until all pins are clear of the
slots. If only repositioning the rack, do not remove
completely - go to “Rack Installation” Step 2.
4. Slightly tilt one side. Gently pull rack towards you to
remove rack from unit.
Note: Take care when removing rack to avoid
scratching interior of unit.
5. Once removed, retract the slides.
Note: The slides on the rack have a thin coating which
is used to block moisture and provide lubrication. Use
care when handling.
Wine Rack Installation
1. Insert empty rack into unit with one side tilted slightly
downward until back pin is between front and rear rail
supports.
2. Tilt rack back to horizontal and line up 2 back pins
with back slots.
3. Line up 2 back pins with 2 back slots and 2 front pins
with 2 front slots.
4. Continue inserting rack until all four pins are fully
inserted. Front of rack will set down slightly into the
front slots and be locked into position.
Center
the pins
Front Pin
Back Pin
Center
the pin
Center
the pins
Front Pin
Back Pin
Center
the pin
Center
the pins
Front Pin
Back Pin
Center
the pin
Center
the pins
Front Pin
Back Pin
Center
the pins
Front Pin
Back Pin
Center
the pin
18
USER GUIDE
Interior Adjustments
Wine Storage Options
WINE RACK BOTTLE POSITION
Specially designed horizontal wine racks properly position
the bottles so the wine remains in contact with the cork,
which ensures the cork does not become dry.
Racks are designed to accommodate typical 750ml wine
bottles as follows:
UCWC515 15” Wine Captain Models
UCWC518 18” Wine Captain Models
UCWC524 24” Wine Captain Models
24” Wine
7 Bottles15” Wine
4 Bottles
18” Wine
5 Bottles
19
USER GUIDE
Cleaning
Cleaning
CLEANING VS. SANITIZING
This guide will address both the cleaning and the sanitizing
of the unit.
Clean the unit to remove dried food and spills, to prevent
build-up of grime, and to maintain the natural luster
stainless steel surfaces.
Sanitize the unit when exposed to raw meat juice or
human germs such as from a sneeze or being touched by
someone who is ill. Sanitizing the unit can also be part of
regular cleaning routine.
Stainless Surfaces
Stainless door panels, handles and frames can discolor
when exposed to chlorine gas, pool chemicals, saltwater or
cleaners with bleach.
Keep your stainless unit looking new by cleaning with a
good quality all-in-one stainless steel cleaner and polish
monthly. For best results use Claire
®
Stainless Steel
Polish and Cleaner. Comparable products are acceptable.
Frequent cleaning will remove surface contamination that
could lead to rust. Some installations may require cleaning
weekly.
Do not clean with steel wool pads.
Do not use stainless steel cleaners or polishes on
any glass surfaces.
Clean any glass surfaces with a non-chlorine glass cleaner.
Do not use cleaners not specically intended for
stainless steel on stainless steel surfaces (this
includes glass, tile, and counter cleaners).
If any surface discoloring or rusting appears, clean it
quickly with Bon-Ami
®
or Barkeepers Friend Cleanser
®
and
a nonabrasive cloth. Always clean with the grain. Always
nish with Claire
®
Stainless Steel Polish and Cleaner or
comparable product to prevent further problems.
Using abrasive pads such as ScotchBrite™ will
cause the graining in the stainless steel to
become blurred.
Rust not cleaned up promptly can penetrate the
surface of the stainless steel and complete
removal of the rust may not be possible.
CLEAN INTERIOR COMPONENTS
Use warm or hot water with dish soap to clean all removed
components and interior surfaces. You may use a vinegar and
water solution in place of soap. Proceed to sanitizing.
Note: Cleaning soaps and vinegar solutions are not
sanitizers.
SANITIZE INTERIOR COMPONENTS AND SURFACES
Choose a Commercial Sanitizer Safe for Stainless
Steel
• Read the directions for proper use to ensure that the
surface will actually be sanitized
• Many products require rinsing with water after use,
especially when food will be touching the surface
• Some products require a wait time before rinsing
• Verify the sanitizer you are using is safe for stainless
steel.
Mix Your Own Sanitizer
Isopropyl Alcohol (rubbing alcohol)
1. Fill a clean, empty spray bottle with isopropyl alcohol
2. Spray surface
3. Wait 20 minutes
4. Dampen a non-abrasive cloth with isopropyl alcohol and
wipe down surface
5. Dry surface with a clean dry non-abrasive cloth
Unscented Bleach and Water
1. Create a solution of 1 tablespoon of unscented bleach
with one gallon of water.
2. Submerse small parts for no more than 3 minutes - rinse
immediately and allow to air dry or dry with a disposable
paper towel.
3. Fill a clean, empty spray bottle with bleach solution.
4. Spray surface.
5. After 2-3 minutes, use clean potable water to thoroughly
rinse o surface. Allow to air dry or dry with a disposable
paper towel.
6. Sanitize the door and all holes where the hinges attach to
the unit and the brackets attach to the door as well as all
the screws.
CLEAN EXTERIOR SURFACES
Use Bon-Ami
®
or Barkeepers Friend Cleanser
®
and a
nonabrasive cloth. Always clean with the grain. Always nish
with Claire
®
Stainless Steel Polish and Cleaner or comparable
product to prevent further problems.
20
USER GUIDE
Cleaning
INTERIOR CLEANING & SANITIZING
NOTICE
Do not use any solvent-based or abrasive
cleaners. These types of cleaners may transfer taste
and/or odor to the interior products and damage or
discolor the interior.
Remove Slide-out Metal Shelf
1. Remove all items from shelf.
2. Pull shelf out far enough to rmly grasp both sides.
Lift front end slightly (about 1/4”) to center the pin in
the slot.
3. Pull shelf towards you until all pins are clear of the
slots.
4. Slightly tilt one side. Gently pull shelf towards you to
remove from unit.
Note: Take care when removing shelf to avoid
scratching interior of unit.
5. Once removed, retract the slides.*
6. Thoroughly clean and sanitize shelf and slides.
7. Re-install shelf by reversing above steps 1 - 4.
Remove Wine Rack
1. Fully extend empty rack
2. Firmly grasp both sides of rack and lift front end of
rack slightly (about 1/4”) to center the pin in the slot.
3. Pull rack towards you until all pins are clear of the
slots. If only repositioning the rack, do not remove
completely - go to “Rack Installation” Step 2.
4. Slightly tilt one side. Gently pull rack towards you to
remove rack from unit.
Note: Take care when removing rack to avoid
scratching interior of unit.
5. Once removed, retract the slides.
6. Thoroughly clean and sanitize storage wine rack and
slides.
7. Re-install storage bin and slides by reversing above
steps 1 - 4.
Center
the pins
Front Pin
Back Pin
Center
the pin
Center
the pins
Front Pin
Back Pin
Center
the pin
Center
the pins
Front Pin
Back Pin
Center
the pin
*Note: The slides on the rack have a thin coating which is used to
block moisture and provide lubrication. Use care when handling.
Evaporator Components and Rack Supports
1. Disconnect power to the unit.
2. Fully defrost unit (See DEFROSTING)
Center
the pin
21
USER GUIDE
Cleaning
3. Remove evaporator cover.
a. Remove thermistor cover - use a at tool to pry out
the push pin fastener
b. Remove 8 screws (3 on each side 2 on top)
c. Carefully pull evaporator cover out far enough to
disconnect evaporator fan from behind cover
d. Remove evaporator cover - take care to slide
thermistor through notch in evaporator cover
4. Remove evaporator fan assembly from evaporator
cover.*
5. Remove 4 rack supports by removing 4 screws on each
one.
6. Remove screws and spacers from evaporator and
carefully pull evaporator forward - just enough to be
able to wipe both surfaces of the evaporator and the
back wall.
7. Thoroughly clean and sanitize all removed components
including all hardware.
*Note: Carefully clean and sanitize the fan
blades, but DO NOT submerse fan.
8. Re-install all components by reversing above steps
1 - 6.
3-a
3-a
3-b
Rack Supports
Rack Supports
22
USER GUIDE
Cleaning
Remove LED Light Cover
1. With a at screwdriver, carefully pry LED light cover
from ceiling. LED light strip will hang down loosely.
2. Thoroughly clean and sanitize LED light cover
Note: DO NOT clean the LED light strip.
Reinstall LED Light Cover
1. Insert LED light strip into center slots of light cover
and hold in place.
2. Line up tabs on light cover with slots on ceiling light
xture.
3. Apply rm pressure evenly across the length of the
cover until it snaps into place.
Hinge Pin
Bracket
Remove Door, Brackets, and Hinge
1. Hold door to keep it from falling.
2. Remove top hinge pin.
3. Remove door by tilting forward and lifting door o
bottom hinge.
4. Take out screws and remove both hinges.
5. On the door, remove 2 screws and take o bracket.
Repeat for bottom surface of door.
6. Thoroughly clean and sanitize all surfaces of the door,
the brackets, hinges, and all hardware.
7. Reinstall hinges, door, and all hardware by reversing
steps 1-5 above.
Hinge
Hinge
Hinge Pin
Bracket
SLOT
TAB
LED
LIGHT STRIP
LIGHT COVER
23
USER GUIDE
Cleaning
DEFROSTING
Under normal conditions this unit does not require manual
defrosting. Minor frost on the rear wall or visible through
the evaporator plate vents is normal and will melt during
each cycle.
If there is excessive build-up of 1/4” (6 mm) or more,
manually defrost the unit.
Ensure the door is closing and sealing properly.
High ambient temperature and excessive humidity can also
produce frost.
CAUTION
!
DO NOT use an ice pick or other sharp instrument
to help speed up defrosting. These instruments
can puncture the inner lining or damage the
cooling unit. DO NOT use any type of heater to
defrost. Using a heater to speed up defrosting can
cause personal injury and damage to the inner
lining.
NOTICE
The drain pan was not designed to capture the
water created when manually defrosting. To
prevent water from overowing the drain pan
and possibly damaging water sensitive ooring,
the unit must be removed from cabinetry.
To defrost:
1. Disconnect power to the unit.
2. Remove all products from the interior
3. Prop the door in an open position (2 in. [50 mm]
minimum).
4. Allow the frost to melt naturally.
5. After the frost melts completely, clean the interior and
all removed components. (See INTERIOR CLEANING).
6. When the interior is dry, reconnect power and turn
unit on.
24
USER GUIDE
Cleaning Condenser
Cleaning Condenser
INTERVAL - EVERY SIX MONTHS
To maintain operational eciency, keep the front grille free
of dust and lint, and clean the condenser when necessary.
Depending on environmental conditions, more or less
frequent cleaning may be necessary.
WARNING
!
Disconnect electric power to the unit before
cleaning the condenser.
NOTICE
DO NOT use any type of cleaner on the condenser
unit. Condenser may be cleaned using a vacuum,
soft brush, or compressed air.
1. Remove the grille. See GRILLE INSTALLATION).
2. Clean the condenser coil using a soft brush or vacuum
cleaner.
3. Install the grille.
Condenser
25
USER GUIDE
Extended Non-Use
Extended Non-Use
VACATION/HOLIDAY, PROLONGED SHUTDOWN
The following steps are recommended for periods of
extended non-use:
1. Remove all consumable content from the unit.
2. Disconnect the power cord from its outlet/socket and
leave it disconnected until the unit is returned to
service.
3. If ice is on the evaporator, allow ice to thaw naturally.
4. Clean and dry the interior of the unit. Ensure all water
has been removed from the unit.
5. The door must remain open to prevent formation of
mold and mildew. Open door a minimum of 2"
(50 mm) to provide the necessary ventilation.
WINTERIZATION
If the unit will be exposed to temperatures of 40°F (5°C)
or less, the steps above must be followed.
For questions regarding winterization, please
call U-Line at 414.354.0300.
CAUTION
!
Damage caused by freezing temperatures is not
covered by the warranty.
26
USER GUIDE
Troubleshooting
If you think your U-Line product is malfunctioning, read the
CONTROL OPERATION section to clearly understand the
function of the control.
If the problem persists, read the NORMAL OPERATING
SOUNDS and TROUBLESHOOTING GUIDE sections below
to help you quickly identify common problems and possible
causes and remedies. Most often, this will resolve the
problem without the need to call for service.
If you do not understand a troubleshooting remedy, or your
product needs service, contact U-Line Corporation directly
at +1.616.754.5601.
When you call, you will need your product Model and Serial
Numbers. This information appears on the Model and Serial
number plate located on the upper right or rear wall of the
interior of your product.
All models incorporate rigid foam insulated cabinets to
provide high thermal eciency and maximum sound
reduction for its internal working components. Despite this
technology, your model may make sounds that are
unfamiliar.
Normal operating sounds may be more noticeable because
of the unit’s environment. Hard surfaces such as cabinets,
wood, vinyl or tiled oors and paneled walls have a
tendency to reect normal appliance operating noises.
Listed below are common refrigeration components with a
brief description of the normal operating sounds they
make. NOTE: Your product may not contain all the
components listed.
• Compressor: The compressor makes a hum or pulsing
sound that may be heard when it operates.
BEFORE CALLING FOR SERVICE
TROUBLESHOOTING GUIDE
ELECTROCUTION HAZARD. Never attempt to
repair or perform maintenance on the unit
before disconnecting the main electrical power.
Troubleshooting - What to check when problems occur:
NORMAL OPERATING SOUNDS
IF SERVICE IS REQUIRED
Troubleshooting
• Evaporator: Refrigerant owing through an evaporator
may sound like boiling liquid.
• Condenser Fan: Air moving through a condenser may
be heard.
• Automatic Defrost Drain Pan: Water may be heard
dripping or running into the drain pan when the unit is
in the defrost cycle.
DANGER
!
Problem Possible Cause and Remedy
Interior Light
Does Not
Illuminate
If the unit is cooling, it may be in
Sabbath mode.
Light Remains
on When Door
Is Closed.
Turn o light switch if equipped.
Adjust light actuator bracket on bottom
of door.
Unit Develops
Frost on
Internal
Surfaces.
Ensure the door is closing and sealing
properly.
Unit Develops
Condensation
on External
Surfaces.
The unit is exposed to excessive
humidity. Moisture will dissipate as
humidity levels decrease.
Product is Not
Cold Enough
Air temperature does not indicate
product temperature. See CHECKING
PRODUCT TEMPERATURE below.
Adjust the temperature to a cooler set
point.
Ensure unit is not located in excessive
ambient temperatures or in direct
sunlight.
Ensure the door is closing and sealing
properly.
Ensure the interior light has not
remained on too long.
Ensure nothing is blocking the front
grille, found at the bottom of the unit.
Ensure the condenser coil is clean and
free of any dirt or lint build-up.
27
USER GUIDE
Troubleshooting
CHECKING PRODUCT TEMPERATURE
To check the actual product temperature in the
unit:
1. Partially ll a plastic (nonbreakable) bottle with water.
2. Insert an accurate thermometer.
3. Tighten the bottle cap securely.
4. Place the bottle in the desired area for 24 hours.
5. Avoid opening the unit during the testing period.
6. After 24 hours, check the temperature of the water.
If required, adjust the temperature control in a small
increment (see CONTROL OPERATION).
Causes which aect the internal temperatures of
the cabinet include:
• Temperature setting.
• Ambient temperature where installed.
• Installation in direct sunlight or near a heat source.
• The number of door openings and the time the door is
open.
• The time the internal light is illuminated. (This mainly
aects product on the top rack or shelf.)
• Obstruction of front grille or condenser.
28
USER GUIDE
Wire Diagram
Wire Diagram
115 V
Open
Open
Open
Open
Open
Black
Blue
N.C.
White
FUSE
11
10
22
1
1
12
White light
Blue light
L/T Evap fan
R/B Evap fan
Condenser fan
L/T Zone temp
L/T Door switch
R/B Door switch
L/T Evap temp
R/B Zone temp
R/B Evap temp
Compressor
Open
Programming
WIFI Antenna
Diagnostics
VCC Control
User Interface
42392_A
1 51 6 1 4
(If Applicable)
POWER CORD
ASSEMBLY
220-240 VOLT
PLUG
LIVE
BLACK (115V)
BROWN (220-240V)
NEUTRAL
WHITE (115V)
DARK BLUE (220-240V)
29
USER GUIDE
Product Liability
Product Liability
Field service technicians are authorized to make an initial
assessment in the event of reported damages. If there are
any questions about the process involved, the technician
should call the manufacturer for further explanation.
While inspecting for defects or installation issues, photos
should be taken to document any damages or issues found.
During the assessment, if the service technician is able to
nd the source of the damage and it can be resolved by
replacement of a part, the servicer is authorized to replace
the part in question. The part that caused the damage
must be returned to the manufacturer in its entirety. The
part must be clearly labeled with the serial number of the
unit it was removed from, the date, and the servicer who
removed the part.
If the service technician determines the damage is the
result of installation issues (water connection/drain, etc.),
the consumer would be notied and the issues shall be
resolved at the direction of the consumer.
If damage is evident and the service technician is unable
to nd the source, the manufacturer must be contacted at
+1.616.754.5601 for further direction.
1260 Van Deinse St. Greenville, MI
T: +1.616.754.5601
Website: vikingrange.com/commercial
30
USER GUIDE
Parts
Pa rts
10
22
9
20
4
7
5
3
27
2 17
21
29
13
16 24 6 15
14
11
12
30
31
28
8
1819
26
* NOT PICTURED
VCWC524-SG33A
Item
Description
Service P/N
1
ANTI TIP BRACKET W/SCREWS *
80-54221-00
2
BACK PANEL, 2 PIECE
80-55619-00
3
COMPRESSOR ASSEMBLY, 5 CLASS
80-55452-00
4
CONDENSER ASSY 5 CLASS
80-55453-00
5
CONDENSER FAN W/SCREWS
80-54014-00
6
DOOR ASM, 524-GS, NSF
90-17035-00
7
DRAIN PAN
80-54217-00
8
DRAIN TROUGH 5 CLASS 24"
80-55484-00
9
DRIER
80-54055-00
10
ENCLOSURE ASSEMBLY, BOARD
80-54532-00
11
EVAP ASSY, 5 CLASS 24"
80-55486-00
12
EVAP SS COVER 24", COM
80-55561-08
13
EVAPORATOR FAN
80-54807-00
14
EVAPORATOR FAN COVER W/SCREWS
80-54809-00
15
GASKET, DOOR
80-54039-01
16
GRILLE, 24" 5 CLASS
80-55487-00
17
HINGE ASSEMBLY, NSF
80-55374-02
18
LADDERS, 2 SHELVING FRONT 5CL
80-55613-05
19
LADDERS, 2 SHELVING REAR 5CL
80-55613-04
20
LEG LEVELERS (4) 3/8"-16
80-54019-01
21
LIGHT ASM, 2 COLOR
80-55272-00
22
MAIN BRD/DISPLAY ASSY
80-55429-01
23
PACKAGING *
80-54160-00
24
PLUNGER SWITCH, NUGGET
80-55375-00
25
POWER CORD, EXTERNAL *
80-55362-00
26
ROCKER SWITCH
80-55603-00
27
SERIAL INVERTER 120V (FMX)
80-55570-00
28
SLIDE ASSY, 5 CLASS
80-55509-00
29
THERMISTOR ASSY
80-55225-00
30
WINE RACK FRONT 24" 5 CLASS
80-55502-00
31
WINE RACK 524
80-33067-06
32
WIRE HARNESS, HI VOLTAGE *
80-55592-01
33
WIRE HARNESS, LOW VOLTAGE *
80-55592-00
31
USER GUIDE
R-600A Specications
USER GUIDE
R-600A Specifications 1
u-line.com
SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE • SERVICE
R-600A Specifications
For R-600a refrigerant service tips and more videos, go
to: www.u-line.com/videos
.
WARNING
!
Flammability warnings for a pure-iso-butane
refrigerant.
Technician m ust observe al l federal, st ate and local la ws regarding r efrigerants .
Gloves and Eye Protection must be used.
R-600a is considered non-toxic, but is flammable
when mixed with air.
Keep a dry powder type fire extinguisher in the
work area.
R-600a is heavier than air, do not allow any
leakage/migration to low areas such as
basements and stairs.
Never use a torch on a fully charged
refrigeration system.
Never substitute U-Line OEM replacement parts
or methods of construction.
R-600a must be stored and transported in
approved containers.
32
R-600A Specications
USER GUIDE
USER GUIDE
R-600A Specifications 2
u-line.com
SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE • SERVICE
WARNING
!
Only skilled and well trained service technicians
permitted to service R-600a equipped products.
All tools and equipment must be approved for
use with R-600a refrigerant.
Local, state and federal laws, standards must be
observed along with proper certification and
licensing.
Ventilation is required during servicing.
No conversions to R-600a from any other
refrigerants. OEM R-600a equipped unit only.
Service area must be free of ignition sources.
No smoking is allowed in the service area.
All replacement electrical components must be
OEM and installed properly (sealed and
covered).
If the evaporator is cold prior to service, it must
be thawed prior to service.
When using a vacuum pump, start pump before
opening refrigeration system.
Vacuum pump and recovery equipment should
be at least 10 feet from the work area.
It is recommended that a simple LPG gas
detector is on site during service.
Ensure that all R-600a is removed from the
system prior to brazing any part of the sealed
system.
Only a clean, dry leak free system should be
charged with R-600a.
R-600A SPECIFICATIONS/LABELING
R-600a equipped products are labeled (both the unit and
the compressor).
R-600a is colorless and odorless.
R-600a is considered non-toxic, but is flammable when
mixed with air.
Do not remove or alter any R-600a labeling on the
product.
Use only a refrigerant grade R-600a from a properly
labeled container.
RECOVERING/RECLAIMING R-600A
(R-600a has been exempted from recovery/reclaiming
requirements by the US EPA)
Recovery/Reclaiming equipment must be approved for use
with R-600a.
Ensure the evaporator is at room temperature prior to
recovery/reclaiming R-600a.
Use a common piercing pliers or piercing valve to remove
R-600a from the compressor process tube. (Note: Piercing
devices must not be left on the system and must be
replaced with a Schrader type valve.)
33
USER GUIDE
R-600A Specications
USER GUIDE
R-600A Specifications 3
u-line.com
SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE • SERVICE
Evacuate/reclaim via the piecing pliers to ensure the
system is empty of R-600a before any system work is
performed.
The recovery cylinder must be evacuated (no air inside)
prior to accepting R-600a.
The recovery cylinder must not be filled more than 45%
safe fill level and refrigerants must not be mixed.
The recovery cylinder must be clearly marked with R-
600a and Flammable Warning labels.
Ensure proper ventilation during recovery/reclaiming of R-
600a.
Start vacuum pump/recovery pump prior to piercing the
compressor process tube.
Follow recovery/reclaim OEM instructions for the specific
equipment used.
SYSTEM REPAIR
Ensure no residual R-600a refrigerant is left within the
system prior to repair (simple venting is not sufficient).
Evacuate and charge with dry nitrogen for leak checks.
Repair leaks or replace system parts as required.
When re-brazing, the system must be purged with dry
nitrogen and at least one access point open to the
atmosphere.
When re-brazing, proper ventilation is required along with
constant monitoring for the presence of R600a refrigerant.
The filter dryer must be replaced any time the sealed
system is serviced.
No system should be open to the atmosphere for longer
than 15 minutes to avoid moisture migration into the
system components.
LEAK DETECTION
After removal of the R-600a, the unit can be charged with
dry nitrogen or helium.
Electronic leak detection or soap solution can be used to
check for nitrogen/helium leaks.
Never use a halide torch or lighted match to check the
system for leaks at any time.
The high side of the refrigeration system (compressor
discharge to outlet of drier) must be leak tested with the
compressor running.
34
R-600A Specications
USER GUIDE
USER GUIDE
R-600A Specifications 4
u-line.com
SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE • SERVICE
The low side of the refrigeration system (evaporator,
compressor and suction line) must be leak tested with the
compressor off (equalized pressure).
RECHARGING
No air is ever to be allowed inside the refrigeration system
(R-600a refrigerant or dry nitrogen only).
Never use a torch on a fully charged refrigeration system.
Install a Schrader Type access port on the compressor
process stub.
Evacuate the system to 100 microns prior to charging.
Weigh in the R-600a charge using a refrigerant scale. (run
compressor an extra two minutes to clear the charging
hoses).
Seal the Schrader Type access port, a proper cap and seal
must be used to close the system.
SUMMARY
Safely handling R-600a requires proper procedures and
training.
R-600a approved service tools must be used.
R-600a labeling must not be removed or altered.
Proper ventilation during service is required.
Never apply a torch to a charged R-600a refrigeration
system.
Use OEM replacement service parts and do not alter the
construction of the unit.
35
USER GUIDE
System Diagnosis Guide
System Diagnosis Guide
REGRIGERATION SYSTEM DIAGNOSIS GUIDE
System
Condition
Suction
Pressure
Suction
Line
Compressor
Discharge
Condenser Capillary
Tube
Evaporator Wattage
Normal Normal Slightly
below room
temperature
Very hot Very hot Warm Cold Normal
Overcharge Higher than
normal
Very cold
may frost
heavily
Slightly warm
to hot
Hot to warm Cool Cold Higher than
normal
Undercharge Lower than
normal
Warm-
near room
temperature
Hot Warm Warm Extremely
cold near
inlet - Outlet
below room
temperature
Lower than
normal
Partial
Restriction
Somewhat
lower than
normal vacuum
Warm-
near room
temperature
Very hot Top passes
warm -
Lower
passes cool
(near room
temperature)
due to liquid
Room
temperature
(cool) or
colder
Extremely
cold near
inlet - Outlet
below room
temperature
backing up
Lower than
normal
Complete
Restriction
In deep
vacuum
Room
temperature
(cool)
Room
temperature
(cool)
Room
temperature
(cool)
Room
temperature
(cool)
No
refrigeration
Lower than
normal
No Gas 0 PSIG to 25” Room
temperature
(cool)
Cool to hot Room
temperature
(cool)
Room
temperature
(cool)
No
refrigeration
Lower than
normal
CAPILLARY TUBE
DRYER
CONDENSER
COMPRESSOR
EVAPORATOR
36
USER GUIDE
Compressor Specications
Electrocution can cause death or serious injury.
Burns from hot or cold surfaces can cause serious
injury. Take precautions when servicing this unit.
Disconnect the power source.
Do not stand in standing water when working
around electrical appliances.
Make sure the surfaces you touch are not hot or
frozen.
Do not touch a bare circuit board unless you are
wearing an anti-static wrist strap that is grounded
to an electrical ground or grounded water pipe.
Handle circuit boards carefully and avoid touching
components.
Compressor Specications
FMXA9C
REFRIGERANT R600A
VOLTAGE 230 VAC
FREQUENCY 43-134 Hz
START WINDING 20 Ohm at 77
o
F
RUN WINDING 20 Ohm at 77
o
F
RUN TO START 20 Ohm at 77
o
F
LRA 1.7 A
FLA 1.7 A
STARTING DEVICE Inverter CF02C05
OVERLOAD Inverter CF02C05
*All resistance readings are
+
10%
DANGER
!
37
USER GUIDE
Troubleshooting Extended
Troubleshooting - Extended
CAUTION
!
Never attempt to repair or perform maintenance
on the unit until the main electrical power has
been disconnected from the unit.
SPECIFIC ERRORS AND ISSUES
The advanced diagnostic capabilities of the electronic
controls utilized on the 1, 3, and 5 Class units allow for
easy and thorough troubleshooting.
Navigation of the control is the key and is explained in
the CONTROL OPERATION section of the manual, along
with control button layout, control function descriptions,
a service mode menu and service menu selection
explanations.
Verication of temperature and thermistor performance can
be identied by directly viewing thermistor readings in the
service mode.
Included in this section are some diagnostic tips; if
additional help is required, please contact the U-Line
Corp, “Customer Care Facility” at +1.414.354.0300 for
assistance.
NORMAL OPERATING SOUNDS
All models incorporate rigid foam insulated cabinets to
provide high thermal eciency and maximum sound
reduction for its internal working components. Despite
this technology, your model may make sounds that are
unfamiliar.
Normal operating sounds may be more noticeable because
of the unit’s environment. Hard surfaces such as cabinets,
wood, vinyl or tiled oors and paneled walls have a
tendency to reect normal appliance operating noises.
Listed below are common refrigeration components with a
brief description of the normal sounds they make. NOTE:
Your product may not contain all the components listed.
• Compressor: The compressor makes a hum or pulsing
sound that may be heard when it operates.
• Evaporator: Refrigerant owing through an evaporator
may sound like boiling liquid.
• Condenser Fan: Air moving through a condenser may
be heard.
• Automatic Defrost Drain Pan: Water may be heard
dripping or running into the drain pan when the unit is
in the defrost cycle.
Solenoid Valves: An occasional clicking sound may be
heard as solenoid valves are operated.
38
USER GUIDE
Troubleshooting Extended
TROUBLESHOOTING GUIDE
Concern Potential Causes Action
Not Cooling Compressor overheating Verify proper air ow through condenser. Is condenser clean?
Conrm condenser fan operation.
Compressor not operating Test overload and relay, replace as needed.
Compressor operating - no cooling Refer to System Diagnosis Guide.
Frozen Product Control set too cold Adjust Set Point Temp accordingly.
Thermistor failure Check Error Log in Service Mode, OHM thermistor.
Frost Buildup
Inside Unit
Door Ajar or Restricted from Closing Check door clearance to adjoining cabinetry. Check
distribution of product in unit.
Thermistor failure OHM thermistor
Display Not
Working
Display unplugged Verify that both ends of the display wiring are rmly
connected.
Display wiring broken or damaged Perform continuity test of wiring and replace as needed.
Interior Lights Not
Working
Door switch misaligned or defective Check the function of reed switch and door magnet
adjustment.
Noisy Refrigeration tubing touching cabinet Carefully reposition tubing.
Fan blade obstruction (wiring, foam
insulation, packaging material)
Remove obstruction.
39
USER GUIDE
Troubleshooting Extended
MAIN CONTROL
The main control board is very robust and is rarely the
cause of system issues. It is important to fully diagnose
the board for any suspected failures before attempting
to remove the board for replacement or service. Follow
the guidelines below to fully test and diagnose the main
control.
Power Fault
If the unit does not (or seems to not) power on, follow the
ow chart below to help diagnose the issue. Before begin-
ning it is important to rst verify the unit is not simply set
to sabbath mode.
Check Voltage
At Wall Outlet
Verify Voltage At
Main Control
Voltage Input
Check Fuse F1
For Continuity
Replace
Plunger Switch
Replace Main
Board
Replace
Fuse
Replace
Power Cord
Alert Customer
Of Power Failure
Is the Plunger
Switch Operating
Properly?
Inspect
Customer UI
and Data Cable
Connect Test Display
Cycle Power And Check
For Operation
No Voltage
No Voltage
Voltage
Continuity
Operating
Not Operating
No Continuity
No
Yes
Voltage
CAUTION
!
Precautions must be taken while working with
live electrical equipment. Be sure to follow
proper safety procedures while performing tests
on live systems.
PLUNGER SWITCH
A plunger switch is used to monitor door state. When the
door is closed it comes into contact with the plunger which
closes a circuit which turns the light and display o. When
the door is open the plunger moves outward and opens the
circuit. If the door is left open for longer than 5 minutes
the switch will trigger an error code and set an audible
warning.
40
USER GUIDE
Control Operation-Service
Control Operation-Service
UI BUTTON LAYOUT
1. Hidden Button
2. Plus Button
3. Minus Button
4. Light Button
5. Power Button
6. Clean Button
-Access Service Menu
-No LED directly above. All LEDs turn on with button
-Increases temperature
-Navigates through service menu
-Decreases temperature
-Navigates through service menu
-Activates light for 3 hours on select models
-Used to select items in service menu
-Turns unit o/on
-Activates Clean Cycle on select models
-Toggles between zones in Dual-Zone models
CONTROL FUNCTION GUIDE
SHOWROOM MODE
This mode is designed to show units in a display
environment. When in this mode the only functions will be
the control and cabinet lights. The compressor, fans, etc.
will not operate. To enter/exit this mode hold the light key
and the power key for 5 seconds. The display will ash
once and beep and the degree symbol will begin to ash.
When the degree symbol is ashing the unit will allow the
use of the control for demonstrations. The unit can be left
in this mode indenitely.
SERVICE MODE
This mode has options available for service diagnostics.
To enter the mode hold the hidden key for 10 seconds.
The display will show “0.” When in this mode use the plus
and minus buttons to select the desired option. The LIGHT
key is the ENTER key and will initiate the function. If
changing a setting, you must press the LIGHT key again
to retain the changed setting. To exit the service mode
scroll to option “0” and press the LIGHT key. After ve
minutes of not touching any keys the mode will also exit
automatically.
1 2
3
4 5 6
FUNCTION COMMAND DISPLAY/OPTIONS
ON/OFF
Press and release
Unit will immediately
turn ON or OFF
Sabbath Mode See “Sabbath Mode”
section
41
USER GUIDE
Control Operation-Service
SERVICE MODE GUIDE
APPENDIX
SERVICE MODE GUIDE
0. Exit
1. Thermistor 1 temperature not including osets.
2. Thermistor 2 temperature not including osets.
3. Thermistor 3 temperature not including osets.
4. Thermistor 4 temperature not including osets.
5. Thermistor 1 oset. (+/- 10)
6. Thermistor 2 oset. (+/- 10)
7. Thermistor 3 oset. (+/- 10)
8. Thermistor 4 oset. (+/- 10)
9. Thermistor 2 set point
10. Thermistor 3 set point.
11. Thermistor 4 set point.
12. Defrost Interval (0 to 99 hr)
13. Defrost duration (0 to 99 min)
14. Error Log (See Appendix)
15. Clear error log (hold light key until cleared)
16. Thermistor 1 dierential (+5)
17. Thermistor 3 dierential (+5)
18. Evaporator fan on delay (0 to 99 sec)
19. Evaporator fan o delay (0 to 99 sec)
20. Individual component toggle
- Option #0 – Exit
- Option #1 – Relay 1
- Option #2 – Relay 2
- Option #3 – Relay 3
- Option #4 – Relay 4
- Option #5 – Relay 5
- Option #6 – Relay 6
- Option #7 – DC Output 1
- Option #8 – DC Output 2
- Option #9 – DC Output 3
- Option #10 – DC Output 4
- Option #11 – DC Output 5
- Option #12 – Serial output (Compressor)
21. Model number
22. Light All Segments
23. Activate Defrost/Harvest- press and hold for 3 seconds
to activate defrost/harvest
24. Defaults- press and hold for 3 seconds to restore all
values to factory defaults.
25. Main Software (Display only)
26. Live Log Period (frequency that data is output to
diagnostics port)
27. Factory test mode (0=O, 1=On)
28. Compressor RPM
29. Freeze time adjust (Model 54 only)
30. Harvest time adjust (Model 54 only)
31. Low temp alarm limit (Model 55 only)
32. High temp alarm limit (Model 55 only)
1. THERMISTOR 1
This shows the pure thermistor reading with no osets
taken into account.
2. THERMISTOR 2
This shows the pure thermistor reading with no osets
taken into account.
3. Does not apply to this model.
4. Does not apply to this model.
5. THERMISTOR 1 OFFSET
(DO NOT MAKE AN ADJUSTMENT TO THIS WITHOUT
CONTACTING TECH LINE: 800-779-2547)
This calibration is only to be used if actual
temperature at thermistor #1 is o from set point.
By adjusting the oset higher we can force the unit
to drive the temperature down below the set point.
(example: adjusting from 0 to +2 will drop the unit
temperature 2 degrees)
6. THERMISTOR 2 OFFSET
(DO NOT MAKE AN ADJUSTMENT TO THIS WITHOUT
CONTACTING TECH LINE: 800-779-2547)
7. Does not apply to this model.
8. Does not apply to this model.
9. THERMISTOR 2 — SET POINT MINUS OFFSET
This shows the thermistor reading with osets taken
into account.
10. Does not apply to this model.
11. Does not apply to this model.
12. ADJUST DEFROST INTERVAL — 3 TO 24
HOURS
This will adjust the interval between defrosts from
3 to 24 hours. Adjusting from the factory settings
may cause undesired temperature in the refrigerator
section.
13. ADJUST DEFROST DURATION — 0 TO 99
MINUTES
The length of the defrost can be adjusted 0 to 99
minutes long. The other defrost parameters still apply.
Lengthening a defrost may cause higher than normal
temperatures in the refrigerator section.
14. VIEW ERROR LOG
A list of errors in the order they occurred will scroll
on the display. All errors are logged in memory. Only
door error is displayed on the display and has an
audible signal.
E0: Door 1 open.
E1: Thermistor 1 open.
E2: Thermistor 2 open.
42
USER GUIDE
Control Operation-Service
E3: Thermistor 3 open.
E4: Thermistor 4 open (Does not apply to this model).
E5: Thermistor 1 shorted.
E6: Thermistor 2 shorted.
E7: Thermistor 3 shorted.
E8: Thermistor 4 shorted (Does not apply to this
model).
E9: Door 1 open.
E10: Door 2 open.
E11:
E12:
E13:
P1: Pump Circuit open (Does not apply to thismodel).
15: CLEAR ERROR LOG
To clear errors, press and hold (5 seconds) when
CLR is ashing.
16: THERMISTOR - 1 DIFFERENTIAL
This number should not be adjusted.
17. Does not apply to this model.
18. THIS NUMBER SHOULD NOT BE ADJUSTED
19. THIS NUMBER SHOULD NOT BE ADJUSTED
20. INDIVIDUAL COMPONENT TOGGLE
21. MODEL NUMBER INDICATOR
Displays the two-digit model number of the specic
unit. See Model list table.
22. LIGHT ALL LED SEGMENTS
This will illuminate all the LEDs on the display to
ensure they work properly
23. ACTIVATE DEFROST /HARVEST
-Press and hold for 3 seconds to activate
24. FACTORY DEFAULTS
-Press and hold for 3 seconds to restore all values to
factory defaults
25. MAIN SOFTWARE
26. Does not apply to this model
27. FACTORY TEST MODEL
0 = O, 1 = On
28. COMPRESSOR RPM
29. FREEZE TIME ADJUST (MODEL 54 ONLY)
30. HARVEST TIME ADJUST (MODEL 54 ONLY)
31. LOW TEMP ALARM LIMIT (MODEL 55 ONLY)
32. HIGH TEMP ALARM LIMIT (MODEL 55 ONLY)
Display # Relay / Output
- Option #0 – Exit
- Option #1 – Relay 1
- Option #2 – Relay 2
- Option #3 – Relay 3
- Option #4 – Relay 4
- Option #5 – Relay 5
- Option #6 – Relay 6
- Option #7 – DC Output 1
- Option #8 – DC Output 2
- Option #9 – DC Output 3
- Option #10 – DC Output 4
- Option #11 – DC Output 5
- Option #12 – Serial output (Compressor)
SEE RELAY / OUTPUT CHART
PROGRAMMING THE UNIT TO CORRECT
MODEL NUMBER
1. Disconnect the unit from power source.
2. Push and hold the hidden button.
3. While still holding the hidden button, plug the unit into
the appropriate power source.
4. When the ashing digits appear (3-5 seconds), use
the plus and minus buttons to select the appropriate
model number from the chart below.
5. Press the light bulb button once.
6. The display will blink, and then will appear as the
programmed display.
Model #
23 VCRE515
23 VCRE518
26 VCRE524
37 VCWC515
37 VCWC518
38 VCWC524
MODEL LIST
43
USER GUIDE
Thermistor
Evaporator Thermistor
If the evaporator thermistor fails, the unit will rely on a
preset defrost timer during defrost cycles. The unit will
otherwise operate normally. Refer to defrost section.
Thermistor Resistance Data
Thermistors
Thermistors are used for various temperature readings.
Thermistors provide reliable temperature readings
using a resistance which varies based on surrounding
temperatures. If a faulty thermistor is suspected it may be
tested using an accurate ohmmeter.
Both thermistors in the unit are identical. If a thermistor
is suspected of being defective, the resistance can be
veried. Place the thermistor in an ice water bath, the
resistance should read 16.1k Ohms +/-5% on your meter.
Thermistor connections must be kept clean. A thermistor
connection that has become corroded can cause resistance
values from the thermistor to change as they pass through
a dirty connection to the board.
It is for that reason that we apply dielectric grease to all of
our thermistor connections. Dielectric grease will help to
keep thermistor connections clean and dry.
If you change a thermistor in the unit please re-apply
dielectric grease to the connection. If you encounter
a dirty thermistor connection, you should replace the
thermistor and the thermistor harness.
Thermistor error information can be found in the Control
Operations - Service section.
This unit has two thermistors.
Thermistor one (Zone):
Located along the right hand side wall. It is used to
maintain the operating temperature within that zone.
Thermistor two (Evaporator):
Located on the evaporator. It is used for defrost.
THERMISTOR FAILURE
Zone Thermistor
If the zone thermistor in the unit fails, the unit will
continue to cool in a backup mode (Self Preservation
Mode) to preserve the integrity of the contents. The unit
will otherwise operate normally.
USER GUIDE
u-line.com
Thermistor
Thermistors are used for various temperature readings.
Thermistors provide reliable temperature readings using a
resistance which varies based on surrounding temperatures.
If a faulty thermistor is suspected, it may be tested using
an accurate ohmmeter.
Thermistor connections must be kept clean. A thermistor
connection that has become corroded can cause resistance
values from the thermistor to change as they pass through
a dirty connection to the board.
It is for that reason that we apply dielectric grease to all of
our thermistor connections. Dielectric grease will help to
keep thermistor connections clean and dry.
If you change a thermistor in the unit, please re-apply
dielectric grease to the connection. If you encounter a dirty
thermistor connection, you should replace the thermistor
and the thermistor harness.
This unit has one thermistor located along the right hand
sidewall of the ice bin. It is used to maintain the ice level in
the bin.
Thermistor Resistance Data
* (+/
- 5%)
Thermistor
Temp (F) Temp (C)
Nominal Resistance
(OHMS)*
-40 -40 169157
-31 -35 121795
-22 -30 88766
-13 -25 65333
-4 -20 48614
5 -15 36503
14 -10 27681
23 -5
21166
32 0 16330
41 5 12696
50 10 9951
59 15 7855
68 20 6246
77 25 5000
86 30 4029
95 35 3266
104 40 2665
113 45 2186
122 50 1803
131 55 1495
140 60 1247
149 65 1044
158 70 879
167 75 743
176 80 631
44
USER GUIDE
Defrost
Defrost
This unit defrosts, by default, every 12 hours of compressor runtime for 45 minutes. If you have veried that
the unit does not have an ambient air leak, refer to the Control Operation - Service section and adjust unit to
defrost every 9 hours for 60 minutes. Also, adjust the #2 thermistor to -4 instead of 0.
45
USER GUIDE
Remove Fan and Cover
Remove Fan and Cover
CONVECTION COOLING
This unit is equipped with an advanced convection cooling
system. Convection cooling stabilizes cabinet temperature,
cools product faster and increases energy eciency.
Evaporator Fan
The evaporator fan is responsible for circulating warm air
from the refrigeration zone, past the evaporator and back
into the refrigerated zone.
The evaporator fan is factory set to have a 1 minute delay
at the beginning of a cooling cycle. This delay gives the
evaporator time to cool properly before warm air is passed
over it. The fan will continue to run for an additional 2
minutes at the end of a cooling cycle. Fan delay times can
be modied through the service menu.
Evaporator fan operation is also determined by door switch
state. If the door switch circuit opens, the fan will stop.
When the door switch circuit is closed the fan will either
continue running with the cooling cycle, or if not currently
cooling, the fan will run for 1 minute to circulate air and
clear any condensation that may have appeared on glass
doors and shelves.
Note: If the unit is set to sabbath mode, the evaporator
fan will no longer respond to the state of the door switch.
In order to operate eciently, the evaporator fan blade
and vents should be unobstructed and free of any dust
buildup.
Evaporator Fan Replacement
Should the evaporator fan need to be replaced follow the
steps below.
1. Remove any product from the unit.
2. Remove unit from cabinetry to access rear.
3. Disconnect power to the unit.
4. Remove back panel from unit.
5. Disconnect fan electrical connection at rear of unit.
6. Remove insulating foam from refrigerant line pass-
through hole as needed to gain clearance for fan plug.
7. Remove internal shelving.
8. Remove 8 evaporator cover screws.
9. Grasp evaporator cover, pull forward and up as bottom
of cover is installed behind the front edge of the drain
trough.
10. While pulling the evaporator cover clear of the unit, it
may be necessary to use your free hand to manipulate
the fan plug end through the pass-through hole.
11. Remove the 4 screws mounting the fan shroud to the
evaporator plate.
12. Remove and replace fan. Take special care to properly
route fan wire.
Air Flow
46
USER GUIDE
Remove Fan and Cover
NOTICE
Fan must be oriented to pull air in through lower
evaporator cover vents and push air out at fan
mounting location.
13. Installation is the reverse of removal.
14. Care must be taken to assure the bottom of the
evaporator cover is reinstalled behind the front edge of
the train trough.
15. Use sealant gum to seal any openings at rear of unit
before replacing rear cover.
16. Reinstall unit taking care to level, space and secure as
found.
47
ENSURING YOUR WARRANTY STAYS VALID
CLEANING AND MAINTENANCE
• Clean the Condenser Every Six Months
Failure to keep the condenser clean can result in permanent damage to the compressor.
The condenser coil is located near the compressor and usually at the bottom of the machine. In order for the condenser to perform
eciently, it must be cleaned about every six months to remove dust and debris and prevent overheating.
• Deep Clean the Ice Machine Every Six Months
Neglecting this cleaning will lead to mold or mildew buildup, cloudy ice, reduced water ow, reduced ice production,
and damage to the machine.
Use only manufacturer-approved, nickel-safe ice machine cleaner and follow all label warnings and
directions. Order ice machine cleaner online: www.u-line.com.
Every six months the ice machine requires a thorough cleaning to remove debris from the bin and ush out impurities that accumulates
from the water supply; clear, craft, and nugget machines are equipped with a built-in cleaning cycle.
• Clean Stainless Steel Surfaces
Your machine is built with quality stainless steel, but it can still rust when not properly maintained.
- Avoid exposure to outdoor elements such as rain, snow, sprinklers or pool splash.
- Use only a non-chlorine, non-abrasive stainless steel cleaner.
- Inspect the machine for any signs of rust. When spotted early, the rust is only on the surface and can usually be scrubbed o.
SAFE INSTALLATION AND MAINTENANCE
• Outdoor Operation
Only machines designed for outdoor use may be operated outdoors.
- The machine should be installed under cover, to avoid exposure to rain, snow, and direct sun.
- The machine should not be not be exposed to chlorinated water such as from pool or hot tub splash.
- Do not operate in temperatures below 45°F (7°C) or above 100°F (38°C).
• Indoor Operation
- Install where the machine will not be exposed to direct sunlight - especially if the appliance a glass door.
- Do not install the machine where it will be exposed to chlorinated water such as from an indoor pool or hot tub splash.
- Do not operate in temperatures below 50°F (10°C) or above 100°F (38°C).
• Location and Ventilation
- Do not block the grille on the front base of the machine; proper airow is essential to cooling.
- Do not operate the appliance inside a cabinet; it has been designed to operate under a counter or free-standing (certain models only).
• Proper Sealing - Beverage Dispensers
- If not sealed properly, excessive condensation, limited cooling, and damage to the machine will occur. When correctly installed, the
insulation should extend from within the refrigerator, through the counter, and into the tap tower.
ELECTRICAL AND DRAINAGE REQUIREMENTS
• Operate With a Safe Electrical Connection
Only operate the appliance on a dedicated circuit to avoid power uctuations and overloads.
- Do not use an extension cord. Only the supplied power cord directly connected to an outlet ensures that the machine will safely receive
adequate power. Extension cords can become unplugged accidentally, overheat, or become damaged. Improper electrical connection will
void the warranty.
• Operate With Proper Drainage
If your appliance requires a drain hookup consult a plumber for proper installation. Improper drainage can cause damage to the machine
as well as its surroundings. Improper drainage will void the warranty.
CAUTION
!
CAUTION
!
CAUTION
!
CAUTION
!
CAUTION
!
CAUTION
!
48
Middleby Refrigeration | 1260 E. Van Deinse, Greenville, MI 48838
Middleby Refrigeration Limited Warranty
THREE YEAR LIMITED PARTS & LABOR WARRANTY – Viking Commercial and U-Line Commercial
For three years from the date of shipment from the factory this warranty covers all parts and labor to repair or replace any part of
the referenced Middleby Refrigeration product (the “Equipment”) that under normal use proves to be defective in materials or
workmanship. This warranty is conditioned upon you promptly notifying Middleby Refrigeration of any claims, and providing
Middleby Refrigeration with all data and information requested by Middleby Refrigeration or its service agents in connection with
such claims as well as all necessary access to your premises and the Equipment. All service provided by Middleby Refrigeration
under the above warranty must be performed by a Middleby Refrigeration factory authorized servicer and dispatched from the
factory, unless otherwise specified by Middleby Refrigeration. Warranty labor is provided at straight time only.
LIMITED FIVE YEAR SEALED SYSTEM PARTS WARRANTY – Viking Commercial and U-Line Commercial
For five years from the date of original purchase, Middleby Refrigeration will cover the following parts only(no labor) if they prove to
be defective under normal commercial use: compressor.
WARRANTY TERMS
These warranties apply only to Equipment installed in any one of the fifty states of the United States, the District of Columbia, or
the ten provinces of Canada. The Equipment must be installed, operated, and maintained in accordance with Middleby
Refrigeration Brand User, Installation and Service Guides, copies of which were provided to you with the Equipment or otherwise
will be furnished to you upon request. Further, this warranty applies only to Equipment shipped from the Middleby Refrigeration
facility after July 1, 2025 and purchased from an authorized dealer.
Except as provided in the Limited Warranty above, the Equipment is provided “as-is”. Middleby Refrigeration disclaims all other
warranties, express, statutory or implied, including without limitation, the implied warranties of title, non-infringement,
merchantability and fitness for a particular purpose. Middleby Refrigeration does not warrant that the Equipment will meet your
specifications or needs. You acknowledge that you are solely responsible for the selection of the Equipment and determining the
suitability of the Equipment for your needs.The warranties only apply to the original purchaser and are non-transferable. Service
must be dispatched from Middleby Refrigeration to be eligible for warranty coverage. The warranties apply to units operated
outside only if designed for outdoor use by model and serial number. Replacement water filters, light bulbs, and other
consumable parts are not covered by these warranties. In-home/business instruction on how to use your product is not covered
by these warranties. Food, beverage, and medicine loss are not covered by these warranties. Use of non OEM parts will void this
warranty.
If the Equipment is located in an area where Middleby Refrigeration factory authorized service is not available, you may be
responsible for a trip charge or you may be required to bring the Equipment to a Middleby Refrigeration factory authorized service
location at your own cost and expense.
Units purchased after use as floor displays, and/or certified reconditioned units, are covered by the limited one year warranty only
and no coverage is provided for cosmetic defects.
To maintain warranty coverage, all preventative maintenance procedures outlined in the Use and Care Manual must be followed.
Signal issues related to Wi-Fi connectivity are not covered by these warranties.
Equipment that is not installed, operated and maintained in accordance with Middleby Refrigeration’s Use and Care Manual or
other written materials provided to you by Middleby Refrigeration or available for the Equipment (as may be updated by Middleby
Refrigeration from time to time, the “Manual”), a copy of which is provided to you with the Equipment or otherwise will be
furnished to you upon request, is excluded from this warranty. This warranty does not apply to damage or failure which results, in
49
Middleby Refrigeration | 1260 E. Van Deinse, Greenville, MI 48838
Middleby Refrigeration’s or its service agent’s sole opinion, from failure to provide a suitable installation and operating
environment (including power and HVAC if applicable) and facilities as prescribed by the Manual, misuse, abuse, accident or
improper use, neglect, power failure or power surges (over or under voltage), or to damage or failure from flood, fire, lightning or
other natural or man-made disasters, or other Acts of God, or to Equipment that has missing or altered serial numbers.
Modifications and Repair: Equipment that has been modified or altered by persons other than Middleby Refrigeration’s or its
service agents, or Equipment that has had non-approved devices or connection items attached thereto, is excluded from coverage
under this warranty. Repair of the Equipment by anyone other than Middleby Refrigeration’s or its authorized service agents will
void all warranties on the Equipment.
Accessories: Accessories and parts (collectively “Accessories”) that are consumed in the normal course of Equipment operation
or maintenance are excluded from this warranty. Failure of or damage to Equipment or components from the use of non-approved
cleaning chemicals, devices or processes is also excluded from this warranty.
Warranty Service, Exclusive Remedy
Middleby Refrigeration will be solely responsible for determining whether or not the Equipment or any component thereof is
defective. Defective components covered by this warranty will be repaired or replaced at Middleby Refrigeration’s option without
charge to you and such repaired or replacement components will be covered by this warranty for the balance of the Warranty
Period. Parts used in the repair of defective components and replacement components may be new, recovered or rebuilt. At its
sole option, Middleby Refrigeration may decide to replace defective Equipment covered by this warranty with new, recovered or
rebuilt Equipment of equal or greater capability, and such Equipment will be covered by this Limited Warranty for the balance of
the Warranty Period. Defective Equipment and components will become the property of Middleby Refrigeration. This paragraph
states Middleby Refrigeration’s sole and exclusive obligation and liability and your sole and exclusive remedy under this warranty.
Middleby Refrigeration shall not be responsible for a failure to provide warranty services due to causes beyond Middleby
Refrigeration’s or its service agents’ control.
Warranty Claims
Claims under this warranty must be reported to Middleby Refrigeration under such reporting service as Middleby Refrigeration
may designate. Upon receipt of the claim and related information and preliminary verification that the claim is valid, Middleby
Refrigeration will promptly notify an authorized service agent to contact you and arrange for an on-site repair visit during the
service agent’s normal working hours. Any costs incurred by Middleby Refrigeration or its service agent associated with a service
agent being refused or unable to gain access to the Equipment on your premises, or a claim not covered by this warranty, will be
charged to you.
Disclaimer of Damages
Middleby Refrigeration disclaims all incidental, special and consequential damages, including but not limited to loss of use, lost
revenue or profits, or substitute use, suffered by you or any third party, whether arising in contract, tort (including negligence), or
otherwise, resulting from any breach by Middleby Refrigeration or its service agents of this warranty, or resulting from the
manufacture, use, or defects, of or in the Equipment, even if Middleby Refrigeration was apprised of the possibility of such
damages.
Customer Indemnity
You agree to indemnify, defend and hold Middleby Refrigeration harmless from all third party claims, demands, judgments, fees
and costs directly or indirectly arising out of or related to your use of the Equipment. You further agree to indemnify and hold
Middleby Refrigeration harmless from any incidental, consequential or special damages suffered by you, including lost revenue or
profits, loss of use, or substitute use, during periods of Equipment failure or loss of use.
Governing Law, Entire Warranty
50
Middleby Refrigeration | 1260 E. Van Deinse, Greenville, MI 48838
This warranty shall be governed and construed in accordance with the laws of the State of Michigan, USA (except with respect to
its provisions regarding conflicts of laws). The warranty described herein is the complete and only warranty for Equipment and
supersedes all prior oral or written agreements and understandings that may have existed between us relating to Equipment
warranties. The terms of this warranty may not be altered, amended or modified except by a signed writing from Middleby
Refrigeration. Any purported alteration, amendment or modification by a service agent or anyone else will not be enforceable
against Middleby Refrigeration.
Charges for Non-Warranty Service or Rejection of Service Visit
In the event that repairs, replacement or service are provided by Middleby Refrigeration’s service agents for work not covered by
this limited warranty, customer agrees to pay the service agent directly according to the service agent’s normal scale of charges. In
the event Middleby Refrigeration is invoiced by the service agent for services not covered under this extended warranty, Middleby
Refrigeration will invoice customer and customer will pay such invoice based on terms of net 10 days. Customer also agrees to pay
any cost incurred by Middleby Refrigeration or its service agent associated with a service agent responding to a call for service, but
then being refused or unable to gain access to the Equipment on Customer’s premises. Failure to submit payment may, at
Middleby Refrigeration’s discretion, result in Middleby Refrigeration voiding the balance of the warranty. In no event will Middleby
Refrigeration authorize service to a customer with an outstanding Non-Warranty invoice.
For parts and service assistance, or to find factory authorized service near you, contact Middleby Refrigeration at 616.754.5601.
7-1-2025 #30757 REV_A
51
