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10-9-2025
MRWC224-SG31A
OWNER’S GUIDE & SERVICE MANUAL
MARVEL UNDERCOUNTER REFRIGERATION
Model: 24WIN-SG01A
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Contents
Welcome ............................................................................. 3
Important Safety Instructions .............................................. 4
Unpacking Your Appliance ................................................. 5
Electrical ............................................................................. 6
Cutout and Product Dimensions ......................................... 7
Installing Your Appliance .................................................... 9
Door Reversal .................................................................. 10
Using Your Electronic Control ........................................... 12
Care and Cleaning ............................................................ 13
Stainless Steel Maintenance ............................................ 14
Energy Saving Tips ........................................................... 15
Extended Non-Use ........................................................... 16
Obtaining Service ............................................................. 17
Troubleshooting ............................................................... 18
Wire Diagram ................................................................... 20
Product Liability ................................................................ 21
Warranty Claims ............................................................... 22
Ordering Replacement Parts ............................................ 23
R600a Specications ....................................................... 24
Warranty ........................................................................... 28
Carbon Filter Replacement .............................................. 13
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50.4kg
111.5lbs
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USING YOUR ELECTRONIC CONTROL
Control Operation
CONTROL FUNCTION GUIDE
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FUNCTION COMMAND NOTES
Adjust Temperature Press the or buttons. Set a temperature from 34°F-61°F.
Adjust Interior Light Color
Press the button to toggle
interior lighting color.
Toggle between bright white, warm white, cool
white, light blue, blue, and teal interior
LED lighting.
Interior Light Remain On
Press and hold the button until
interior lighting ashes 3 times. This
enables interior lighting to remain on
when door is closed.
Interior light remains on until procedure is
repeated.
Start Sabbath Mode
Press and hold the and buttons
for 3 seconds to enable Sabbath mode.
All lights and display turn o, but cooling
continues.
End Sabbath Mode
Press and hold the and buttons
for 3 seconds to end Sabbath mode.
Machine returns to standard operation.
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Replace Carbon Filter
The carbon lter should be changed every 6 months.
(Carbon lters may be ordered online at partsformarvel.com
Enter part # 90-54209-29.)
To remove carbon
lter, rotate until tabs
are verticle, then pull
lter out. To install,
line up tabs with slots
in evaporator cover,
push in slightly and
turn until tabs are
horizontal.
Rotate lter until
tabs are vertical
Tabs
pull out lter.
Insert lter and rotate tabs to horizontal.
INTEGRATED PANEL DIMENSIONS
Panel Installation
If you do not have assistance, you may wish to remove the
door completely - for door removal, refer to the door reversal
instructions found in the main owner’s guide.
1. Starting at corner, pull gasket away from door and
completely remove.
2. Upon removal, lay gasket down on a at surface.
3. Align the panel with the outside edge (opposite the
hinge) and high enough to align with the highest point in
the door.
4. Secure integrated panel to door using clamps. A robust
tape may also be used. Marvel recommends the use of
bar clamps to secure the panel to the door. If using
tape, be certain the tape will not damage panel finish
upon removal.
5. Locate within the gasket channel 10 pre-drilled holes
(3 on each side, 2 on top, 2 on bottom).
NOTE
Gasket Channel
10 Pre-drilled holes.
6. Using a 7/64” drill bit, drill 10 pilot holes into the wood
panel 1/2” deep using the holes in the door frame as a
guide.
7. Using a Phillips screwdriver, place one screw into each
of the 10 pilot holes and screw down. Do not overtighten
screws.
8. Remove clamps from door.
9. Starting at the corners, reinstall the gasket into the
gasket channel in the frame. Make sure the gasket is
fully seated. This may take some force.
10. Reinstall door.
It is important to ensure that all drilled holes are drilled to
the correct depth in order to avoid spills in the wood when
hardwood is installed.
NOTE
Rotate tabs to verticle,
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WIRE DIAGRAM
Model：15REF-SS01A
15BEV-SG01A
15WIN-SG01A
24REF-SS01A
24BEV-SG01A
24WIN-SG01A
Model：24WID-SG01A
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R600A Specications & Handling
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WARNING
Flammability warnings for a pure-iso-butane
refrigerant.
Gloves and Eye Protection must be used.
R-600a is considered non-toxic, but is ammable when
mixed with air.
Keep a dry powder type re extinguisher in the work area.
R-600a is heavier than air, do not allow any leakage/migra-
tion to low areas such as basements and stairs.
Never use a torch on a fully charged refrigeration system.
Never substitute Marvel OEM replacement parts or
methods of construction.
R-600a must be stored and transported in approved
containers.
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!
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 certication 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 Specications/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 ammable 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: Pierc-
ing devices must not be left on the system and must be
replaced with a Schrader type valve).
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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 lled more than 45%
safe ll level and refrigerants must not be mixed.
The recovery cylinder must be clearly marked with R600a
and Flammable Warning labels.
Ensure proper ventilation during recovery/reclaiming of
R600a.
Start vacuum pump/recovery pump prior to piercing the
compressor process tube.
Follow recovery/reclaim OEM instructions for the specic
equipment used.
System Repair
Ensure no residual R-600a refrigerant is left within the
system prior to repair (simple venting is not sucient).
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 lter 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
tocheck 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.
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The low side of the refrigeration system (evaporator,
compressor and suction line) must be leak tested with the
compressor o (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.
Proper ventilation during service is required.
Never apply a torch to a charged R600a refrigeration
system.
Use OEM replacement service parts and do not alter the
construction of the unit.
No air is ever to be allowed inside the refrigeration system
(R600a 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.
The lter dryer must be replaced any time the sealed sys-
tem 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 R600a, 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. Evacuate and charge with
dry nitrogen for leak checks.
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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 Part # 80-55667-00.
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
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CAUTION
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CAUTION
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CAUTION
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CAUTION
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CAUTION
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Middleby Refrigeration | 1260 E. Van Deinse, Greenville, MI 48838
Middleby Refrigeration Limited Warranty
ONE YEAR LIMITED PARTS & LABOR WARRANTY – Northland Collection
For one year from the date of original purchase, 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. For products installed and used for normal residential use, material cosmetic defects are included in this warranty,
with coverage limited to 60 days from the date of original purchase. 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, unless otherwise specified by Middleby Refrigeration. Service provided during normal
business hours.
TWO YEAR LIMITED PARTS & LABOR WARRANTY – Essential, Home, and Seamless Collections
For two years from the date of original purchase, 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. For products installed and used for normal residential use, material cosmetic defects are included in this warranty,
with coverage limited to 60 days from the date of original purchase. 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, unless otherwise specified by Middleby Refrigeration. Service provided during normal
business hours.
THREE YEAR LIMITED PARTS & LABOR WARRANTY – Element Collection
For three years from the date of original purchase, 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. For products installed and used for normal residential use, material cosmetic defects are included in this warranty,
with coverage limited to 60 days from the date of original purchase. 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, unless otherwise specified by Middleby Refrigeration. Service provided during normal
business hours.
LIMITED SIX YEAR SEALED SYSTEM PARTS WARRANTY – Home, Seamless and Essential Collections
For six 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 residential use: compressor, condenser, evaporator, drier, and connecting tubing. 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.
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Middleby Refrigeration | 1260 E. Van Deinse, Greenville, MI 48838
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 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.
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.
The start of Middleby Refrigeration’s obligation is limited to four years after the shipment date from Middleby Refrigeration.
In-home instruction on how to use your product is not covered by these warranties.
Food, beverage, and medicine loss are not covered by these warranties.
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.
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 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.
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Middleby Refrigeration | 1260 E. Van Deinse, Greenville, MI 48838
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
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.
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Middleby Refrigeration | 1260 E. Van Deinse, Greenville, MI 48838
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 #30758 REV_A
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