Cove DW2450 User manual


828019 REV B 08/2023
DW2450 and DW2450WS Service Manual
service.subzero.com 800.222.7820
General Information

GeneralInformation
SERVICE MANUAL INTRODUCTION
This service manual helps with troubleshooting and
diagnosing malfunctions, completion of repairs, and return
of the product to proper operating condition. Read the
complete instructions contained within before initiating any
repairs.
This guide is intended for use by Factory Certified Service.
Cove Appliance, Inc. recommends that only Factory
Certified Service companies do repairs.
Warning and Caution product safety labels appear
throughout this manual. Product safety labels appear at the
beginning of some sections. Follow the instructions in the
product safety labels to avoid personal injury and/or
product damage. The sample safety labels explain the
types of notices that appear in this manual.
WARNING:
States a hazard that may cause serious injury or
death if precautions are not followed.
CAUTION:
Indicates minor injury or product damage may
occur if precautions are not followed.
IMPORTANT: Highlights especially important
information.
TIP: Indicates additional, useful information.
Information and images contained herein are copyright of
Cove Appliance, Inc. Neither this manual nor any
information or images contained herein may be copied or
used in whole or in part without the express written
consent of Cove Appliance, Inc. © Cove Appliance, Inc., all
rights reserved.
COVE PRODUCT RATING PLATE INFORMATION
The product rating information is located inside the
dishwasher tub on the left-hand side.
Important information for each product is listed on the
product rating plate. Rating plates identify:
Model name and part number
Electrical and power specifications
Serial number
•
•
•
1


828019 REV B 08/2023
DW2450 and DW2450WS Service Manual
service.subzero.com 800.222.7820
General Information
MODEL DESCRIPTIONS AND SALES ACCESSORIES
For more details on individual model descriptions and a
listing of all compatible sales accessories, see the Cove
Product and Sales Accessory Reference Guide.
COVE DISHWASHER MODEL KEY
MODEL CHARACTER DESCRIPTION
DW Dishwasher
24 Width in Inches
50 Feature Set Indicator
WS Water Softener
PRODUCT USE AND CARE AND INSTALLATION
GUIDES
Product use and care guides, installation guides, and other
product specifications are available in the Product
Specifications and Manuals Library.
UNIT WARRANTY
The product warranty is determined by the installation
location and the date of installation.
View product warranties at https://www.subzero-
wolf.com/warranty.
Warranties start on the day of product installation.
Search for warranty and service information by serial
number, customer last name, and address using Unit
History at http://service.subzero.com/Tools/
UnitHistory.
•
•
•
2


828019 REV B 08/2023
DW2450 and DW2450WS Service Manual
service.subzero.com 800.222.7820
Controls and Operation

ControlsandOperation
COVE DISHWASHER THEORY OF OPERATION
WASH CYCLES
The Cove dishwasher has four wash cycles, Auto, Normal,
Heavy, and Quick, available as keys on the dishwasher's
user interface module (UIM). Additional cycles for specific
needs (for example, energy-saving cycles or gentle cycles
for china and crystal) are available by touching the Cycles+
key.
Once the wash cycle is selected, additional options for the
wash cycle (for example, delaying the start time or adding
an anti-bacterial high-temperature rinse) are available by
touching the Options key. To begin the wash cycle, touch
the Start key and close the door.
In each wash cycle:
The unit fills to a preset volume.
The unit heats and circulates water throughout the
tub interior with a preset water temperature and
circulation speed.
The unit may change which racks receive spray
water/detergent. Each wash cycle has its own preset
spray arm pattern.
The unit does a preset number of fills and drains to
remove the soils from the dishes.
The unit rinses the dishes with a preset rinse
sequence.
The unit then dries the dishes with a preset drying
sequence.
Each wash cycle has its own preset water volumes,
temperatures, spray arm patterns, and rinse/drying
operations.
STATUS LIGHT
The status light will illuminate to indicate the status of the
cycle.
LIGHT STATUS
Blue A delayed start has been selected. Touch
Start each time the door is opened prior to the
start time.
Red The cycle has started.
Green The cycle is complete.
No Light The door was not closed within 4 seconds
after touching Start, the cycle has been
complete for more than two hours (low floor
light setting) / eight hours (high floor light
setting), or the door has been opened upon
cycle completion.
WATER SOFTENER
For water softener models only, a salt compartment is
located at the bottom of the interior.
When softener salt is low, “Add Salt. ENTER once added,
CANCEL to ignore.” appears on the display.
1
2
3
4
5
6
3


828019 REV B 08/2023
DW2450 and DW2450WS Service Manual
service.subzero.com 800.222.7820
Controls and Operation
DIVERTER VALVE
The diverter valve helps control water flow depending on
the selected wash cycle.
The diverter valve manages water flow between the lower,
middle, and upper wash arms. It uses a high-torque motor
to drive a disc valve via a gear box. A proximity sensor
sends information on the disc position to the MCM. The
diverter valve distributes water from the wash pump to the
upper/middle and lower spray arms at different pressures.
In select cycles, it alternates flow between the arms to
deliver a "soak and scrub" action.
When it diverts water to the upper/middle and lower
arms separately, the unit also adjusts the wash pump
RPMs to help maintain the pressure.
Quick and Rinse & Hold cycles do not divert water.
All other cycles use the diverter valve.
WATER INLET VALVE
When the water inlet valve (SOL1) is operated manually in
Service mode, itwill fill the unit with 1.0 gallons of water
before automatically turning off.
The water inlet valvecannot fill the unit to the point that
water overflows out of the unit. The water level is
monitored by the pressure sensor. When the pressure
sensor reaches a predetermined value, the MCM turns on
the drain pump.
UIM AND TUB LIGHT BEHAVIOR
UIM lighting and tub lighting operation are synchronized.
When the UIM lighting turns on, the rate that the UIM
lights increase their brightness matches the rate that
the tub lights increase their brightness so that both
lighting systems match.
When the door is closed, the tub lights instantly turn
off.
When the door is opened, the tub lights slowly
increase their brightness to 100% output level in 3
seconds.
If the door is left open at an angle for 10 minutes, the
tub lights dim slowly to a 20% output level. Then, if
the user leaves the door open at any angle for
another 5 minutes, the tub lights turn off. If the door
moves during this 15-minute period, the tub lighting
dimming sequence starts over.
When Standby Power mode automatically turns on, all
lighting dims as above.
Dishwasher lighting control does not affect or control
lighting on the Sub-Zero Group Owner's App.
TEMPERATURE AND TURBIDITY SENSOR
The temperature and turbidity sensor (AE1) is a
combination sensor.
The temperature sensor portion is an integrated NTC
thermistor. The temperature sensor will sense
incoming water temperature as soon as the level of
water in the sump rises to cover it.
The turbidity sensor uses infrared light to measure
how dirty the water in the sump is. This helps to
determine the rate of cleaning of the load.
The dishwasher's UIM has no means to show temperature
or turbidity. Monitoring either of these requires the
Connected Diagnostics Program.
•
•
•
•
•
•
•
•
4


828019 REV B 08/2023
DW2450 and DW2450WS Service Manual
service.subzero.com 800.222.7820
Controls and Operation
WASH CYCLES AND USER CONTROL
The dishwasher's menu is arranged as a multi-level tree
with pre-assigned UIM keys to navigate up/down and left/
right. It also has pre-assigned UIM keys to either select or
disregard a value anywhere within the menu.
AUTO CYCLE
The Auto cycle uses the turbidity of the water and its
change over time to decide the duration and intensity.
Auto starts with a prewash cycle, during which the unit
drains and fills to 1.1 gal. The unit then washes and takes
turbidity readings once per minute, calculating the average
turbidity and the change in the average turbidity as time
passes. The unit washes and accumulates turbidity data
for 10 minutes (up to 15 minutes if the turbidity is not
stable). Then, it selects a cycle based on the average
turbidity:
Very Light (~2:07, 4 gal, crumbs, juice/wine/beer
glasses very light loads).
Light (~2:30, 5.1 gal, cereal bowls, milk glasses,
wine/beer glasses, mashed potatoes, meat juices).
Average (~2:55, 6.2 gal, tomato juice, fried eggs,
cream corn, jams/jellies, tomato sauces).
Heavy (~3:25, 7.3 gal, oatmeal/hot cereals,
scalloped potatoes, dried egg yolk, peanut butter,
creamed corn).
Very Heavy (~3:55, 8.4 gal, dried/baked on starchy
foods, dried on milk products, oven pans used for
roasting meats, casserole foods).
NORMAL CYCLE
The Normal cycle uses the turbidity of the water and its
change over time to decide the duration and intensity.
Normal starts with a pre-wash cycle, during which the unit
drains and fills to 1.1 gal. The unit then washes and takes
turbidity readings once per minute, calculating the average
turbidity and the change in the average turbidity as time
passes. If the turbidity is stable after about 13 minutes or if
the unit has been washing for more than 20 minutes with
varying turbidity behavior, the unit chooses the Light or
Average setting based on the average turbidity level.
However, if the turbidity is consistently low (indicating dirty
water) after the first fill/wash/drain, the unit chooses the
Heavy setting.
Light (~2:40, 3.0-8.3 gal, cold cereal bowls, milk
glasses, wine/beer glasses, meat juices)
Average (~2:40, ~5.0 gal, tomato juice, fried eggs,
cream corn, jams/jellies, tomato sauces, starches)
Heavy (~2:40, 5.3-8.3 gal, oatmeal/hot cereals,
scalloped potatoes, dried egg yolk, peanut butter,
creamed corn)
IMPORTANT NOTE: Within the Heavy setting, the
unit chooses one of two sets of fills and drains
depending on the turbidity (five total fills and
drains if the turbidity improves or eight total fills
and drains if the turbidity remains low).
SET A WASH CYCLE
Touch the desired wash cycle, or touch Cycles+
multiple times to scroll to the desired wash cycle.
Touch Start and close the door within 4 seconds.
IMPORTANT NOTE: To incorporate a cycle option
into the wash cycle, touch Options before
touching Start. Refer to Cycle Options. To change
the cycle after touching Start, touch Cancel.
•
•
•
•
•
•
•
•
1
2
5


828019 REV B 08/2023
DW2450 and DW2450WS Service Manual
service.subzero.com 800.222.7820
Controls and Operation
SET CYCLE OPTIONS
Select the desired wash cycle.
Touch Options.
Touch Options multiple times to scroll through cycle
options.
Touch Enter to select the desired option and
continue to touch Enter until the desired setting
appears on the display.
Touch Options again to select additional options.
Touch Start and close the door within four seconds.
CYCLE OPTIONS
OPTION DESCRIPTION
Delay Start Delays start of wash cycle by 1–12 hours in
1-hour increments.
High Temp Wash Increases the main wash water temperature
and extends the cycle time by 10 minutes.
Sani Rinse* Increases the rinse water temperature and
extends the rinse time by 15 minutes.
Extended Dry Extends the dry time by 30 minutes.
Extra Dry Increases the rinse water temperature and
extends the dry time by 30 minutes.
Top Racks Only Directs wash functions to upper and middle
racks only.
*Sanitizes per NSFIANSI standard 184 for residential
dishwashers.
INTERRUPT A CYCLE
To interrupt a cycle:
Open the door.
To restart the cycle, touch Start and close the door
within 4 seconds.
CANCEL A CYCLE
Open the door.
Touch Cancel and follow the instructions on the
display.
1
2
3
4
5
6
1
2
1
2
6


828019 REV B 08/2023
DW2450 and DW2450WS Service Manual
service.subzero.com 800.222.7820
Controls and Operation
SET USER OPTIONS
Touch Cancel twice.
Touch and hold Options for approximately 10
seconds until "User Set Up" appears on the display.
Touch Options multiple times to scroll to the desired
option.
Touch Enter to scroll or to select the desired setting.
Touch Cancel to exit user setup.
USER OPTIONS
OPTION DESCRIPTION
Language Select language.
Water Hardness Adjust water hardness setting.
Connect Turn connect on or off.*
Tone Level Adjust tone level.
Notification Turn end-of-cycle chime to off, low, or high.
If set to off, also disables the end-of-cycle
light.
Scroll Rate Adjust display scroll rate.
Display Contrast Adjust display contrast.
Display Brightness Adjust display brightness.
Floor Light Adjust status light brightness.
Rinse Aid Dosing Adjust amount of rinse aid dispensed.
Showroom Mode For showroom use only.
Reset All Restore factory settings.
*To connect to the Sub-Zero Group Owner's App, Connect
must be turned on.
USE THE "RESET ALL" FUNCTION
Touch and hold the Options key for 10 seconds to
enter the User Setup menu.
Touch the Options key multiple times to scroll to the
"Reset All" option.
Touch Enter to set and run the "Reset All" function.
The unit is restored to factory settings, and all error codes
are cleared.
1
2
3
4
5
1
2
3
7


828019 REV B 08/2023
DW2450 and DW2450WS Service Manual
service.subzero.com 800.222.7820
Controls and Operation
MODES
Modes are the dishwasher's operational states, in which
the dishwasher varies its behavior according to instructions
from the following:
User input from the UIM
Connected appliance communications from a tablet
or other connected device
Smart Grid
MODE DESCRIPTION
Power-Up mode The unit is first turned on.
User mode The unit is used for day-to-day,
ordinary operation.
Standby Power mode The unit enters a low-power
state after a specified period of
inactivity.
Sabbath mode The unit is set up by the user for
certain religious observances.
Child Lock mode The unit's UIM is locked to
prevent unwanted operation.
Showroom mode The unit is set up by sales staff
for demonstration purposes.
Service Diagnostic mode Activated by Service personnel
in the user's residence. See
Service Mode.
POWER-UP MODE
Power-Up mode is the control system's initial power-up/
boot sequence, when the unit first connects to AC power.
In Power-Up mode, all power supplies and all electronics
initialize their associated circuitry and components.
Power-Up mode does not have water softener
regeneration messaging, Bluetooth PIN messaging,
diverter valve movement, or lighting.
Digital Wi-Fi connection X13’s ON/OFF state is OFF until
after the boot sequence, when the software will set it to
either OFF or ON.
If the unit does not successfully pass though Power-Up
mode, the UIM shows "PF - Call Service."
USER MODE
User mode is the normal, day-to-day operation mode of the
dishwasher. This mode does not require any key press
combinations to enter or exit, but the unit's control system
may enter and exit User mode automatically, for example
entering Standby Power mode after a period of inactivity.
User mode allows all control system functions including
Smart Grid requests, Bluetooth pairing, water softener
regeneration messaging, diverter valve movement,
pressure-based drain pump control, and the digital Wi-Fi
connection X13.
STANDBY POWER MODE
During periods of inactivity, the unit can automatically enter
a Standby Power mode in which it consumes no more than
0.5 W of power.
Standby Power mode occurs when the unit has either:
Had no door movement and no communication and
has not logged any errors for 15 minutes.
Completed its wash cycle with the door still latched
shut.
In Standby Power mode, the UIM is blank, and all control
system outputs are disabled including tub lighting, water
softener regeneration messaging, and diverter valve
movement. Pressure-based drain pump control is allowed.
If the pressure goes above its range, the unit will exit
Standby Power mode to communicate the error.
Standby Power mode is exited by moving the door,
pressing any UIM key, receiving a Bluetooth pairing PIN
display command, or triggering an error.
Standby Power mode never occurs when the unit's
"Connect?" option is turned on.
•
•
•
•
•
8


828019 REV B 08/2023
DW2450 and DW2450WS Service Manual
service.subzero.com 800.222.7820
Controls and Operation
SABBATH MODE
Sabbath mode places the unit in a state of reduced
operation specifically for the Sabbath. In Sabbath mode:
The system does not allow tub lighting, audible or
visual response from the door, Smart Grid control,
water softener regeneration messaging, diverter
valve calibration/positioning, Bluetooth pairing PIN
messaging, Service mode, or Standby Power mode.
If a leak is detected, the unit will use pressure-based
drain pump control to try to control the leak. The unit
will create error codes, but there will be no audible,
visual, or Wi-Fi indication from the unit.
Control from a smartphone is allowed.
Sabbath mode can be entered at any time except during
an active wash cycle, Showroom mode, Service mode, or
Child Lock mode. Sabbath mode and Child Lock mode
cannot both be on at the same time.
Sabbath mode remains active until it is deactivated.
Sabbath mode can be deactivated at any time.
A loss of power to the dishwasher does not change the
status of Sabbath mode, but "Reset All" forces Sabbath
mode to be exited.
ENTER SABBATH MODE
Touch and hold Quick for 10 seconds or more.
"Sabbath On" appears on the UIM.
EXIT SABBATH MODE
Touch and hold Quick for 10 seconds or more.
"Sabbath Off" appears on the UIM.
CHILD LOCK MODE
Child Lock mode allows the user to lock the control system
to prevent tampering by children or other unauthorized
individuals. In Child Lock mode:
The system monitors and controls the following
components and devices: UIM lighting, keys, LCD,
door accelerometer, audible indicator, door latch, and
tub lights. Child Lock mode allows error detection/
management and pressure-based drain pump
control.
The unit can enter Standby Power mode.
The unit can be monitored or controlled by the Sub-
Zero Group Owner's App. Entering and exiting Child
Lock mode does not change the ON/OFF status of
digital Wi-Fi connection X13.
Diverter valve movement (calibration or positioning)
never occurs.
Bluetooth pairing/PIN messaging is not allowed.
DAL or TALR requests from a Smart Grid are not
allowed.
Child Lock mode can be activated from either the UIM or
from the Sub-Zero Group Owner's App. Child Lock mode
cannot be entered from Service mode.
Child Lock mode remains active until the user deactivates
it. Child Lock mode does not use any sort of clock,
calendar, or timer feature to automatically exit.
Cycling the power to the dishwasher (or a power outage)
does not change the status of Child Lock mode, but "Reset
All" does force-exit Child Lock mode.
ENTER CHILD LOCK MODE
Touch and hold Heavy for 10 seconds or more.
"Child Lock: On" and "Locked" appear on the UIM.
EXIT CHILD LOCK MODE
Touch and hold Heavy for 10 seconds or more.
"Child Lock: Off" appears on the UIM.
•
•
•
1
1
•
•
•
•
•
•
1
1
9


828019 REV B 08/2023
DW2450 and DW2450WS Service Manual
service.subzero.com 800.222.7820
Controls and Operation
SHOWROOM MODE
Showroom mode is used to demonstrate the unit operation
in an environment where no water supply or drain is
available. In Showroom mode:
The entire UIM menu operates, and all wash cycles
are simulated and accelerated.
Control from the Sub-Zero Group Owner's App is
allowed. The digital Wi-Fi connection X13 is
unaffected by a change to Showroom mode, but
Showroom mode must be exited before the state of
X13 can be changed.
Standby Power mode is available.
Service mode and Child Lock mode are not
available.
Pressure-based drain pump control, diverter valve
movement, error checking, and Smart Grid requests
are not allowed.
ENTER SHOWROOM MODE
Touch and hold Options for 10 seconds or more to
enter the User Setup menu.
Use Options to scroll through the user setup options
to Showroom Mode.
Press Enter to set Showroom Mode to "On."
"Showroom Mode On" appears on the UIM.
EXIT SHOWROOM MODE
Touch and hold Options for 10 seconds or more to
enter the User Setup menu.
Use Options to scroll through the user setup options
to Showroom Mode.
Touch Enter to set Showroom Mode to "Off."
"Showroom Mode Off" appears on the UIM.
•
•
•
•
•
1
2
3
1
2
3
10


828019 REV B 08/2023
DW2450 and DW2450WS Service Manual
service.subzero.com 800.222.7820
Door Component Removal and Installation

DoorComponentRemovalandInstallation
STRIKE PLATE REMOVAL
REMOVE THE STRIKE PLATE
Open the door.
Use a T-25 Torx bit to remove the mounting screw
from behind the door gasket and under the
insulation.
Remove the strike plate from the unit.
STRIKE PLATE INSTALLATION
INSTALL THE STRIKE PLATE
Insert the strike plate into the unit.
Use a T-25 Torx bit to install the mounting screw.
1
2
3
1
2
11


828019 REV B 08/2023
DW2450 and DW2450WS Service Manual
service.subzero.com 800.222.7820
Door Component Removal and Installation
DOOR PANEL REMOVAL
REMOVE THE DOOR PANEL
Open the door.
Use a 1/4" socket to remove the outer door panel
screws.
TIP: Use a magnetic socket to help prevent the
screws from falling into the unit.
Close the door halfway.
Pull the door panel up and out of the keyhole slots.
DOOR PANEL INSTALLATION
INSTALL THE DOOR PANEL
Install the door panel pins into the keyhole slots.
Push the door panel in and down, locking the door
panel in place.
Open the door.
Use a 1/4" socket to install the door panel mounting
screws.
1
2
3
4
1
2
3
4
12


828019 REV B 08/2023
DW2450 and DW2450WS Service Manual
service.subzero.com 800.222.7820
Door Component Removal and Installation
DOOR REMOVAL
WARNING
Disconnect the product from the power source
before starting this procedure.
To remove the door, first remove:
Door panel
Kickplate
Lower front cover
Upper front cover
REMOVE THE DOOR
Disconnect the wire harness at the bottom of the
door.
Remove the door tension cables from the left and
right door hinge hooks.
Partially open the door.
Pull the door upward to disengage the door hinges
from the cabinet door pins.
Remove the door from the unit.
CAUTION
After the door assembly is removed, be
careful to avoid denting or bending the front
surface of the tub bottom.
DOOR INSTALLATION
After installing the door, install:
Upper front cover
Lower front cover
Kickplate
Door panel
INSTALL THE DOOR
Grease the door hinge pins and the door cable’s eye.
Lower the door onto the door hinge pins.
Close the door.
Verify the door tension cables are in their pulleys,
including the rear pulleys.
Attach the left and right door tension cables to the
door hinge hooks.
Connect the wire harness at the bottom of the door.
1
2
3
4
1
2
3
4
5
1
2
3
4
1
2
3
4
5
6
13


828019 REV B 08/2023
DW2450 and DW2450WS Service Manual
service.subzero.com 800.222.7820
Door Component Removal and Installation
DOOR LOWER SEAL REMOVAL
WARNING
Disconnect the product from the power source
before starting this procedure.
To remove the door lower seal, first remove:
Door panel
Kickplate
Lower front cover
Upper front cover
Door
REMOVE THE DOOR LOWER SEAL
With the door laying face-up on a flat surface, pull the
door lower seal barbs out of the holes in the door
bottom panel.
TIP: This releases the door lower seal from the
seal spacer on the other side of the door bottom
panel.
Remove the door lower seal and seal spacer from
the unit.
DOOR LOWER SEAL INSTALLATION
After installing the door lower seal, install:
Door
Upper front cover
Lower front cover
Kickplate
Door panel
INSTALL THE DOOR LOWER SEAL
Install the seal spacer into the door bottom panel.
Install the door lower seal by pushing its tabs through
the holes in the door bottom panel and into the seal
spacer.
1
2
3
4
5
1
2
1
2
3
4
5
1
2
14


828019 REV B 08/2023
DW2450 and DW2450WS Service Manual
service.subzero.com 800.222.7820
Door Component Removal and Installation
DISPENSER REMOVAL
WARNING
Disconnect the product from the power source
before starting this procedure.
To remove the dispenser, first remove:
Door panel
REMOVE THE DISPENSER
Disconnect the wire connectors from the dispenser.
Release the two blue wires from the wire
management clip on the left side of the dispenser.
Use a 1/4" socket to remove the screws from
thedispenser on the outside of the door.
Remove the dispenser from the inside of the door.
DISPENSER INSTALLATION
After installing the dispenser, install:
Door panel
INSTALL THE DISPENSER
Orient the dispenser with the switch to the left when
viewed from the front of the door.
Install the dispenser into the door.
Use a 1/4" socket to install the screws, torqued to
7.25 in lb.
Route the two blue wires through the dispenser's left
wire management clip.
Connect the wire connectors to the dispenser.
1
1
2
3
1
1
2
3
4
5
15


828019 REV B 08/2023
DW2450 and DW2450WS Service Manual
service.subzero.com 800.222.7820
Door Component Removal and Installation
STATUS LIGHT REMOVAL
WARNING
Disconnect the product from the power source
before starting this procedure.
To remove the status light, first remove:
Door panel
REMOVE THE STATUS LIGHT
Use needle-nose pliers to press the center tab of the
status light, while pushing the status light up to free it
from the keyholes.
If necessary, loosen the lower door brace screws
around the status light just enough to free it.
IMPORTANT NOTE: Loosen the screws as little as
possible to preserve the 90° angles in the door
frame.
Push the status lightin, and out of the unit.
Free the status light wires from the wire management
clip.
Disconnect the wire connector from the status light.
STATUS LIGHT INSTALLATION
After installing the status light, install:
Door panel
INSTALL THE STATUS LIGHT
Connect the wire connector to the status light.
Route the status light wires through the wire
management clip.
Push the status light up into the door lower brace
untilthe status light tabs fit into the lower door brace
keyholes. Pull the status light down until it locks into
place.
If the door lower brace screws were loosened to
access the status light, tighten the screws to 23.5 in
lb.
1
1
2
3
4
5
1
1
2
3
4
16


828019 REV B 08/2023
DW2450 and DW2450WS Service Manual
service.subzero.com 800.222.7820
Door Component Removal and Installation
DOOR LOWER BRACE REMOVAL
To remove the door lower brace, first remove:
Door panel
REMOVE THE DOOR LOWER BRACE
Use a 1/4" socket to remove the screws from the door
lower brace.
Remove the ground clip from the door lower brace.
Pull the door lower brace away from the door.
Remove the status light from the door lower brace.
DOOR LOWER BRACE INSTALLATION
After installing the door lower brace, install:
Door panel
INSTALL THE DOOR LOWER BRACE
Attach the status light to the door lower brace.
Attach the ground clip to the door lower brace.
Install the lower brace onto the door.
Use a 1/4" socket to install the screws into the door
lower brace, starting with the middle two screws.
Torque all of the door lower brace screws to 23.5 in
lb.
DOOR UPPER BRACE REMOVAL
To remove the door upper brace, first remove:
Door panel
REMOVE THE DOOR UPPER BRACE
Use a 1/4" socket to remove the four screws around
the outside of the upper brace.
Use a T-15 Torx bit to remove the five screws.
Use an 11/32" socket to remove the two nuts.
Pull the door upper brace away from the unit.
Remove the door upper brace from the unit.
DOOR UPPER BRACE INSTALLATION
After installing the door upper brace, install:
Door panel
INSTALL THE DOOR UPPER BRACE
Install the door upper brace onto the door.
Partially install the 11/32" nuts, T-15 Torx screws, and
1/4" screws before tightening them.
Use an 11/32" socket to tighten the two nuts to 12.5 in
lb.
Use a T-15 Torx bit to tighten the five screws to 18 in
lb.
Use a 1/4" socket to tighten the four screws around
the outside of the upper brace to 23.5 in lb.
1
1
2
3
4
1
1
2
3
4
1
1
2
3
4
5
1
1
2
3
4
5
17


828019 REV B 08/2023
DW2450 and DW2450WS Service Manual
service.subzero.com 800.222.7820
Door Component Removal and Installation
DOOR LATCH REMOVAL
WARNING
Disconnect the product from the power source
before starting this procedure.
To remove the door latch, first remove:
Door panel
Door upper brace
REMOVE THE DOOR LATCH
Open the door slightly to disengage the strike plate
from the door latch.
Use a needle-nose pliers to disconnect the door latch
wire connectors.
TIP: It is not necessary to remove the entire UIM
harness.
Lift the UIM assembly upward far enough to remove
the door latch.
Remove the door latch from the studs.
Remove the cone washers from the studs.
DOOR LATCH INSTALLATION
After installing the door latch, install:
Door upper brace
Door panel
INSTALL THE DOOR LATCH
Install the cone washers onto the door latch studs.
These are conical washers. Install the washers so
that the hollow side faces the door.
Install the door latch over the studs.
Connect the door latch wire connectors.
1
2
1
2
3
4
5
1
2
1
2
3
18


828019 REV B 08/2023
DW2450 and DW2450WS Service Manual
service.subzero.com 800.222.7820
Door Component Removal and Installation
USER INTERFACE MODULE REMOVAL
WARNING
Disconnect the product from the power source
before starting this procedure.
To remove the user interface module, first remove:
Door panel
Door upper brace
Door lower brace
REMOVE THE USER INTERFACE MODULE
Flip the door insulation up from the bottom for access
to the UIM wire harness during removal.
Disconnect the UIM wire harness'wire management
clip from the hat bracket.
Disconnect the wire connector from the status light.
Free the wires from the status light's wire
management clip.
Disconnect the two dispenser wire connectors.
Use needle-nose pliers to disconnect the two wire
connectors from the door latch.
Under the center of the UIM, disconnect the UIM wire
harness from the system wire harness.
Lift the UIM, routing the wire harnesses through the
holes in the insulation.
TIP: Tie a wire or string to the UIM wire harness
before lifting the UIM. When installing the UIM,
pull the wire or string to thread the UIM wire
harness through the insulation.
USER INTERFACE MODULE INSTALLATION
After installing the user interface module, install:
Door lower brace
Door upper brace
Door panel
INSTALL THE USER INTERFACE MODULE
Connect the wire harness to the status light at the
bottom of the door.
Install the UIM over the door latch into the door
channel.
TIP: There can be no gaps between the UIM and
the door liner.
TIP: It may be necessary to pull the door frame
apart slightly.
Under the center of the UIM, connect the UIM wire
harness to the system wire harness.
Connect the wire harnesses to the door latch.
Thread the dispenser wires and status light through
the holes in the insulation.
Flip the bottom of the insulation upward.
Thread the ground wire through the rectangular slot
at the bottom of the insulation. Connect thewire
management clip.
Connect the wire harness to the dispenser.
TIP: Route the left wires through the wire
management clip on the dispenser.
1
2
3
1
2
3
4
5
6
7
1
2
3
1
2
3
4
5
6
7
8
19

828019 REV B 08/2023
DW2450 and DW2450WS Service Manual
service.subzero.com 800.222.7820
Door Component Removal and Installation
DOOR CABLE REMOVAL
To remove the door cable, first uninstall the unit far
enough to access both ends of the door cable.
REMOVE THE DOOR CABLE
Disconnect the door cable from the door.
Disconnect the door cable from the door cable
spring.
DOOR CABLE INSTALLATION
INSTALL THE DOOR CABLE
Connect the door cable to the spring.
Use general-purpose grease to grease the ferrule of
the door cable.
DOOR CABLE SPRING REMOVAL
To remove the door cable spring, first uninstall the unit.
Then, remove:
Door cable
REMOVE THE DOOR CABLE SPRING
Disconnect the door cable spring from the rear cable.
DOOR CABLE SPRING INSTALLATION
INSTALL THE DOOR CABLE SPRING
Hook the spring to the rear cable.
Hook the door cable to the spring.
1
2
1
2
1
1
1
2
20