CSO24TE-S Convection Steam Oven

Product Information: Convection Steam Oven

Specifications

• Model: CSO24TE/S
• Trim Style: T
• Metal Type: Stainless Steel
• Handle Style: International Designation

General Information

The Convection Steam Oven (CSO) is a versatile appliance that
combines the power of convection cooking with the health benefits
of steam. With multiple trim styles and metal types available, the
CSO can seamlessly integrate into any kitchen design.

Service Manual Introduction

The service manual provides detailed information on component
access, removal, troubleshooting, and technical data for the CSO.
It is important to follow the instructions and precautions listed
in the manual to ensure safe and proper usage of the appliance.

Wolf Product Rating Plate Information

The CSO has a rating plate located on the left hand side trim
inside the door. The rating plate contains the serial number, which
is important for warranty and service information. Make sure to
refer to the rating plate for model identification, serial number,
and electrical information.

Model Descriptions and Sales Accessories

For specific model descriptions and a list of compatible sales
accessories, please refer to the Sub-Zero Distributor Price List.
The CSO is available in 24 and 30-inch sizes with transitional,
professional, contemporary, E Series, and M Series options.
Different trim styles and handle options are also available.

Product Use and Care and Installation Guides

Product use and care guides, installation guides, and other
product specifications can be found in the Product Specifications
and Manuals Library. It is recommended to review these guides for
proper installation, usage, and maintenance of the CSO.

Unit Warranty

The warranty for the CSO is determined by the installation
location and date. Warranty coverage starts from the day of product
installation. To view product warranties and access warranty and
service information, visit the Sub-Zero service website.

Product Usage Instructions

Cavity Component Removal and Installation

To remove the cavity components of the CSO, follow these
steps:

1. Refer to the service manual for specific component removal
   instructions.

2. Ensure the CSO is turned off and unplugged.

3. Follow the step-by-step instructions provided for each
   component removal.

4. Handle the components with care to avoid damage.

Door Removal

1. Open the door.

2. Rotate the hinge retainer clip on each hinge forward until it
   stops.

3. Close the door until it stops against the hinge retainer
   clips.

4. Grasp the door towards the top on each side.

5. Push the top of the door towards closing while rotating the
   bottom away from the unit.

6. Remove the door from the unit.

Door Installation

1. Align the hinges on the oven door with the hinge slots.
2. Lower the oven door until it stops.
3. Pull the door to the open position.
4. Rotate the hinge retainer clips on each hinge backward until
   they lock into place.

FAQ

Where can I find warranty and service information for my

CSO?

You can find warranty and service information for your CSO by
visiting the Sub-Zero service website and using the Unit History
tool. Enter your CSO’s serial number, customer last name, and
address to access warranty and service details.

Are there different sizes and styles available for the

CSO?

Yes, the CSO is available in 24 and 30-inch sizes with various
trim styles including transitional, professional, contemporary, E
Series, and M Series. There are also different handle styles and
metal types to choose from.

Where can I find product use and care guides for the CSO?

You can find product use and care guides, installation guides,
and other product specifications in the Product Specifications and
Manuals Library. Make sure to review these guides for proper
installation, usage, and maintenance instructions.

Convection Steam Oven Service Manual
General Information Component Access & Removal Troubleshooting Guide Technical Data Wiring Diagrams

subzero.com 800.222.7820
2 4 44 53 54

General Information
GENERAL INFORMATION
SERVICE MANUAL INTRODUCTION
This technical service manual information assists with troubleshooting and diagnosing malfunctions, completion of repairs, and return of the product to proper operational condition. Read the complete instructions contained within before initiating any repairs. This guide is intended for use by Factory Certified Service. Wolf Appliance, Inc. recommends that repairs be performed by Factory Certified Service only. 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 instructions are not followed.
IMPORTANT NOTE: Highlights especially important information. TIP: Indicates additional, useful information. Information and images contained herein are copyright of Wolf 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 Wolf Appliance, Inc. © Wolf Appliance, Inc., all rights reserved.
WOLF PRODUCT RATING PLATE INFORMATION
On the CSO, the rating plate with the serial number is located on the left hand side trim inside the door.

CSO (SWS #13543126)
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CSO24TE/S

MODEL DESCRIPTIONS AND SALES ACCESSORIES
For more details on individual model descriptions and a listing of all compatible sales accessories, see the Sub-Zero Distributor Price List.

CSO MODEL KEY Description Convection Steam Oven Nominal Width Trim Style T Trim Style P Trim Style C Matching Oven Trim E Matching Oven Trim M Metal Type Metal Type
Stainless Steel Handle Style
International Designation

Model Character CSO
24″ and 30″ Transitional Professional Contemporary E Series Ovens M Series Ovens /S for Stainless Steel /B for Black
/TH for Tubular Handles /PH for Professional Handles
ICB

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.

Important information for each product is listed on the product rating plate. Rating plates identify:
Model Serial number Electrical information, including current draw

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General Information
UNIT WARRANTY
Product warranty is determined by the installation location and the date of installation. View product warranties at http://service.subzero.com/
ClaimsAndOrderProcessing/Pages/WarrantyInfo. 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.

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Cavity Component Removal and Installation
CAVITY COMPONENT REMOVAL AND INSTALLATION

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DOOR REMOVAL
Remove the Door 1 Open the door. 2 Rotate the hinge retainer clip on each hinge forward until
the hinge retainer clip stops. 3 Close the door until the door stops against the hinge
retainer clips. 4 Grasp the door toward the top on each side. 5 Push the top of the door toward closing, while rotating the
bottom of the door away from the unit. 6 Remove the door from the unit.

Remove the Door
1 Open the door.
2 Rotate the hinge retainer clip on each hinge forward until the hinge retainer clip stops.
3 Close the door until the door stops against the hinge retainer clips.
4 Grasp the door toward the top on each side.
5 Push the top of the door toward closing, while rotating the bottom of the door away from the unit.
6 Remove the door from the unit.

DOOR INSTALLATION
Install the Door 1 Holding the door at a 45° angle, insert the door hinges into
the hinge slots. 2 Lower the oven door until the oven door stops. 3 Pull the door to the open position. 4 Rotate the hinge retainer clips on each hinge backward until
the hinge retainer clips stop. 5 Test the door.

Remove the Door Front or the Inner Door
1 Place the door on a padded surface, handle side down.
2 Use a T-10 Torx bit to remove the left and right inner door mounting screws.
3 Lift the bottom of the door front.
4 Push the door front toward the top of the inner door.
5 The door front and inner door are separated. Remove the door front or the inner door.

DOOR FRONT OR INNER DOOR REMOVAL To remove the door front, first remove the door.

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DOOR FRONT OR INNER DOOR INSTALLATION

6 Remove the door from the unit.

Install the Door Front or Inner Door 1 Place the upper and lower gaskets onto the inner door. 2 Place the door front onto the inner door above the inner
door bracket. 3 Lift the bottom of the door front above the lower bracket of
the inner door. 4 Pull the door front down over the inner door bracket. 5 Use a T-10 Torx bit to install the left and right inner door
mounting screws.
Install the Door 1 Holding the door at a 45° angle, insert the door hinges into
the hinge slots. 2 Lower the oven door until the oven door stops. 3 Pull the door to the open position. 4 Rotate the hinge retainer clips on each hinge backward until
the hinge retainer clips stop. 5 Test the door.

Remove the Door Front or the Inner Door
1 Place the door on a padded surface, handle side down.
2 Use a T-10 Torx bit to remove the left and right inner door mounting screws.
3 Lift the bottom of the door front.
4 Push the door front toward the top of the inner door.
5 The door front and inner door are separated. Remove the door front or the inner door.

DOOR HANDLE REMOVAL To remove the door handle, first remove the door, then separate the door front and the inner door.
Remove the Door 1 Open the door. 2 Rotate the hinge retainer clip on each hinge forward until
the hinge retainer clip stops. 3 Close the door until the door stops against the hinge
retainer clips. 4 Grasp the door toward the top on each side. 5 Push the top of the door toward closing, while rotating the
bottom of the door away from the unit.

Remove the Door Handle 1 Use a T-25 Torx bit to remove the handle mounting screws.

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REMOVE THE DOOR HANDLE (continued)

2 Remove the handle and handle standoffs from the door front.

INTERMEDIATE DOOR GLASS REMOVAL

To remove the intermediate door glass, first remove the door, then separate the door front and the inner door.

DOOR HANDLE INSTALLATION
Install the Door Handle 1 Place the door handle and handle standoffs onto the door
front. 2 Use a T-25 Torx bit to install the handle mounting screws.

Remove the Door
1 Open the door.
2 Rotate the hinge retainer clip on each hinge forward until the hinge retainer clip stops.
3 Close the door until the door stops against the hinge retainer clips.
4 Grasp the door toward the top on each side.
5 Push the top of the door toward closing, while rotating the bottom of the door away from the unit.
6 Remove the door from the unit.

Install the Door Front or Inner Door 1 Place the upper and lower gaskets onto the inner door. 2 Place the door front onto the inner door above the inner
door bracket. 3 Lift the bottom of the door front above the lower bracket of
the inner door. 4 Pull the door front down over the inner door bracket. 5 Use a T-10 Torx bit to install the left and right inner door
mounting screws.
Install the Door 1 Holding the door at a 45° angle, insert the door hinges into
the hinge slots. 2 Lower the oven door until the oven door stops. 3 Pull the door to the open position. 4 Rotate the hinge retainer clips on each hinge backward until
the hinge retainer clips stop. 5 Test the door.

Remove the Door Front or the Inner Door
1 Place the door on a padded surface, handle side down. 2 Use a T-10 Torx bit to remove the left and right inner door
mounting screws. 3 Lift the bottom of the door front. 4 Push the door front toward the top of the inner door.

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REMOVE THE DOOR FRONT OR THE INNER DOOR (continued)
5 The door front and inner door are separated. Remove the door front or the inner door.

3 Lift the bottom of the door front above the lower bracket of the inner door.

4 Pull the door front down over the inner door bracket.

5 Use a T-10 Torx bit to install the left and right inner door mounting screws.

Remove the Intermediate Door Glass 1 Use pliers to straighten the glass retainer tabs. 2 Remove the intermediate door glass from the inner door. 3 Remove the gasket if necessary.

Install the Door 1 Holding the door at a 45° angle, insert the door hinges into
the hinge slots. 2 Lower the oven door until the oven door stops. 3 Pull the door to the open position. 4 Rotate the hinge retainer clips on each hinge backward until
the hinge retainer clips stop. 5 Test the door.
DOOR SEAL REMOVAL
Remove the Door Seal 1 Open the oven door. 2 Pull the door seal from the channel around the oven door.

INTERMEDIATE DOOR GLASS INSTALLATION
Install the Intermediate Door Glass 1 Install the gasket if removed. 2 Place the intermediate door glass on the inner door. 3 Use pliers to bend the glass retainer tabs over the
intermediate door glass.
Install the Door Front or Inner Door 1 Place the upper and lower gaskets onto the inner door. 2 Place the door front onto the inner door above the inner
door bracket.
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DOOR SEAL INSTALLATION Install the Door Seal
Insert the door seal in the channel around the oven door.
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RACK REMOVAL
Remove the Rack Pull the rack forward out of the unit.

Remove the Rack Guide
1 Remove the rack guide nut. 2 Pull the front of the rack guide toward the center of the
oven. 3 Pull the rack guide forward out of the unit.

RACK INSTALLATION
Install the Rack 1 Insert the rack between the rails of the rack guide. 2 Push the rack into the oven.
RACK GUIDE REMOVAL To remove a rack guide, first remove the racks.
Remove the Rack Pull the rack forward out of the unit.

RACK GUIDE INSTALLATION
Install the Rack Guide 1 Insert the rack guide rails into the rear baffle. 2 Place the indent in the rack guide over the rack guide stud. 3 Install the rack guide nut.
Install the Rack 1 Insert the rack between the rails of the rack guide. 2 Push the rack into the oven.
FOOD PROBE COVER REMOVAL To remove the probe cover, first remove the racks and the righthand rack guide.

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Remove the Rack Pull the rack forward out of the unit.

3 Remove the food probe cover, nut, and food probe cover seal from the unit.

Remove the Rack Guide 1 Remove the rack guide nut. 2 Pull the front of the rack guide toward the center of the
oven. 3 Pull the rack guide forward out of the unit.
Remove the Food Probe Cover 1 Lift the food probe cover. 2 Use an 11 mm socket to remove the food probe cover nut.

FOOD PROBE COVER INSTALLATION
Install the Food Probe Cover 1 Place the food probe seal onto the food probe cover. 2 Place the food probe cover over the food probe switch
threads. 3 Use an 11 mm socket to install the food probe nut.
Install the Rack Guide 1 Insert the rack guide rails into the rear baffle. 2 Place the indent in the rack guide over the rack guide stud. 3 Install the rack guide nut.
Install the Rack 1 Insert the rack between the rails of the rack guide. 2 Push the rack into the oven.
HALOGEN LIGHT BULB REMOVAL WARNING
Turn off the power to the product before starting this procedure. To remove the halogen light bulb, first remove the racks and the left rack guide.

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Remove the Rack Pull the rack forward out of the unit.

5 Remove the halogen light bulb.

Remove the Rack Guide 1 Remove the rack guide nut. 2 Pull the front of the rack guide toward the center of the
oven. 3 Pull the rack guide forward out of the unit.
Remove the Halogen Light Bulb 1 Use a T-20 Torx bit to remove the screws from the oven light
frame assembly. 2 Remove the oven light frame assembly. 3 Remove the oven light safety glass. 4 Remove the oven light seal if required.

HALOGEN LIGHT BULB INSTALLATION
Install the Halogen Light Bulb TIP: Use a cloth to install the halogen light bulb. Oil from fingers shortens the life of the halogen light bulb.
1 Insert the halogen light bulb into the socket. 2 Install the oven light seal into the oven light frame assembly
if it was removed. 3 Place the oven light safety glass onto the oven light seal. 4 Place the oven light safety glass, oven light seal, and oven
light frame assembly over the light housing. 5 Use a T-20 Torx bit to install the screws into the oven light
housing.
Install the Rack Guide 1 Insert the rack guide rails into the rear baffle. 2 Place the indent in the rack guide over the rack guide stud. 3 Install the rack guide nut.
Install the Rack 1 Insert the rack between the rails of the rack guide. 2 Push the rack into the oven.

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REAR BAFFLE REMOVAL To remove the rear baffle, first remove the racks and rack guides.
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Remove the Rack Pull the rack forward out of the unit.

2 Remove the rear baffle from the unit.

Remove the Rack Guide 1 Remove the rack guide nut. 2 Pull the front of the rack guide toward the center of the
oven. 3 Pull the rack guide forward out of the unit.
Remove the Rear Baffle 1 Use a T-20 Torx bit to remove the screws from the rear
baffle.

REAR BAFFLE INSTALLATION
Install the Rear Baffle 1 Place the rear baffle against the back wall of the oven
cavity. 2 Use a T-20 Torx bit to install the screws into the rear baffle.
Install the Rack Guide 1 Insert the rack guide rails into the rear baffle. 2 Place the indent in the rack guide over the rack guide stud. 3 Install the rack guide nut.
Install the Rack 1 Insert the rack between the rails of the rack guide. 2 Push the rack into the oven.
HOT AIR FAN BLADE REMOVAL To remove the hot air fan blade, first remove the racks, rack guides, and rear baffle.

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Remove the Rack Pull the rack forward out of the unit.

2 Remove the rear baffle from the unit.

Remove the Rack Guide
1 Remove the rack guide nut. 2 Pull the front of the rack guide toward the center of the
oven. 3 Pull the rack guide forward out of the unit.

Remove the Hot Air Fan Blade
TIP: The hot air fan blade nut is reverse threaded.
1 Use a 10 mm socket to remove the nut from the hot air fan blade.
2 Remove the washer and the hot air fan blade from the unit.
3 The washer and C-clip behind the hot air fan blade does not need to be removed unless the convection fan motor is being removed.

Remove the Rear Baffle
1 Use a T-20 Torx bit to remove the screws from the rear baffle.

HOT AIR FAN BLADE INSTALLATION
Install the Hot Air Fan Blade 1 Install the C-clip and washer if they were removed for
replacement of the convection fan motor. 2 Install the hot air fan blade. 3 Install the washer.
TIP: The hot air fan blade nut is reverse-threaded.

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INSTALL THE HOT AIR FAN BLADE (continued)
4 Use a 10 mm socket to install the nut onto the hot air fan blade.

Remove the Rack Guide

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1 Remove the rack guide nut.

Install the Rear Baffle
1 Place the rear baffle against the back wall of the oven cavity.

2 Pull the front of the rack guide toward the center of the oven.
3 Pull the rack guide forward out of the unit.

2 Use a T-20 Torx bit to install the screws into the rear baffle.

Install the Rack Guide 1 Insert the rack guide rails into the rear baffle. 2 Place the indent in the rack guide over the rack guide stud. 3 Install the rack guide nut.

Install the Rack 1 Insert the rack between the rails of the rack guide. 2 Push the rack into the oven.
ELEMENT REMOVAL WARNING
Turn off the power to the product before starting this procedure. To remove the element, first remove the racks, rack guides, and rear baffle.
Remove the Rack Pull the rack forward out of the unit.

Remove the Rear Baffle
1 Use a T-20 Torx bit to remove the screws from the rear baffle.
2 Remove the rear baffle from the unit.

Remove the Element
1 Use a T-20 Torx bit to remove the screws and washer from the element.
2 Pull the element forward and disconnect the electrical wires. 3 Remove the gasket seal from the element.

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REMOVE THE ELEMENT (continued) 4 Remove the element form the unit.

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ELEMENT INSTALLATION
Install the Element 1 Install the gasket seal onto the element. 2 Connect the electrical wires to the element. 3 Install the element through the back wall of the oven cavity. 4 Use a T-20 Torx bit to install the screws and washer into the
element.
Install the Rear Baffle 1 Place the rear baffle against the back wall of the oven
cavity. 2 Use a T-20 Torx bit to install the screws into the rear baffle.
Install the Rack Guide 1 Insert the rack guide rails into the rear baffle. 2 Place the indent in the rack guide over the rack guide stud. 3 Install the rack guide nut.
Install the Rack 1 Insert the rack between the rails of the rack guide. 2 Push the rack into the oven.

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TOP COMPONENT REMOVAL AND INSTALLATION

2 Remove the top plate from the unit.

WATER TANK REMOVAL

Remove the Water Tank 1 Touch Water on the control panel. 2 Remove the water tank from the unit.

WATER TANK INSTALLATION
Install the Water Tank Assembly 1 Install the water tank into the unit. 2 Push the water tank closed.
TOP PLATE REMOVAL WARNING
Turn off the power to the product before starting this procedure.
Remove the Top Plate 1 Use a T-20 Torx bit to remove the screws from the top and
back of the unit.

TOP PLATE INSTALLATION
Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.
DOOR SWITCH REMOVAL To remove the door switch, first remove the top plate.
Remove the Top Plate 1 Use a T-20 Torx bit to remove the screws from the top and
back of the unit. 2 Remove the top plate from the unit.

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Remove the Door Switch 1 Disconnect the door switch electrical connector from the
control board.
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REMOVE THE DOOR SWITCH (continued)

2 Open the door switch bracket tab and remove the door switch from the door switch bracket.

2 Remove the water tank from the unit.

DOOR SWITCH INSTALLATION
Install the Door Switch 1 Place the door switch in the door switch bracket. 2 Connect the door switch connector to the control board.
Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.

Remove the Top Plate
1 Use a T-20 Torx bit to remove the screws from the top and back of the unit.
2 Remove the top plate from the unit.

VALVE ASSEMBLY REMOVAL The valve assembly includes the water valve, water tank microswitch, water tank drive motor, and the water tank rail. To remove the valve assembly, first remove the water tank and the top plate.
Remove the Water Tank 1 Touch Water on the control panel.

Remove the Valve Assembly
1 Remove the electrical connectors from the water tank microswitch.
2 Remove the electrical connectors from the water valve.
3 Remove the ground wires.
4 Remove the drive motor tab from the tank housing cover.
5 Use a T-10 Torx bit to remove the screws from the valve assembly.

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REMOVE THE VALVE ASSEMBLY (continued) 6 Remove the valve assembly from the unit.

Remove the Top Plate

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1 Use a T-20 Torx bit to remove the screws from the top and back of the unit.

2 Remove the top plate from the unit.

VALVE ASSEMBLY INSTALLATION
Install the Valve Assembly 1 Place the valve assembly into the tank housing base. 2 Use a T-10 Torx bit to install the screws into the valve
assembly. 3 Install the drive motor tab into the notch in the tank housing
cover. 4 Connect the ground wires. 5 Connect the valve assembly electrical connectors. 6 Connect the water tank microswitch electrical connectors.
Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.
Install the Water Tank Assembly 1 Install the water tank into the unit. 2 Push the water tank closed.
TANK HOUSING COVER REMOVAL To remove the tank housing cover, first remove the top plate.

Remove the Tank Housing Cover 1 Remove the wire guides from the tank housing cover. 2 Use a T-10 Torx bit to remove the screws from the tank
housing cover. 3 Remove the tank housing cover from the unit.
TANK HOUSING COVER INSTALLATION Install the Tank Housing Cover 1 Place the tank housing cover onto the tank housing base. 2 Use a T-10 Torx bit to install the screws into the tank
housing cover. 3 Install the wire harness clips onto the tank housing cover.

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Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.
TANK HOUSING BASE REMOVAL To remove the tank housing base, first remove the water tank, top plate, tank housing cover, and valve assembly.
Remove the Water Tank 1 Touch Water on the control panel. 2 Remove the water tank from the unit.

Remove the Tank Housing Cover
1 Remove the wire guides from the tank housing cover. 2 Use a T-10 Torx bit to remove the screws from the tank
housing cover. 3 Remove the tank housing cover from the unit.

Remove the Top Plate
1 Use a T-20 Torx bit to remove the screws from the top and back of the unit.
2 Remove the top plate from the unit.

Remove the Valve Assembly
1 Remove the electrical connectors from the water tank microswitch.
2 Remove the electrical connectors from the water valve. 3 Remove the ground wires. 4 Remove the drive motor tab from the tank housing cover. 5 Use a T-10 Torx bit to remove the screws from the valve
assembly. 6 Remove the valve assembly from the unit.

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Remove the Tank Housing Base 1 Use a T-20 Torx bit to remove the screws from the side of
the tank housing base. 2 Push the tank housing base forward out of the control
panel.
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REMOVE THE TANK HOUSING BASE (continued) 3 Remove the tank housing base from the unit.

Install the Water Tank Assembly

1 Install the water tank into the unit.

2 Push the water tank closed.

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TANK HOUSING BASE INSTALLATION
Install the Tank Housing Base 1 Insert the tank housing base into the control panel. 2 Use a T-20 Torx bit to install the screws into the tank
housing base.

CONTROL BOARD REMOVAL To remove the control board, first remove the top plate.
Remove the Top Plate 1 Use a T-20 Torx bit to remove the screws from the top and
back of the unit. 2 Remove the top plate from the unit.

Install the Valve Assembly
1 Place the valve assembly into the tank housing base. 2 Use a T-10 Torx bit to install the screws into the valve
assembly. 3 Install the drive motor tab into the notch in the tank housing
cover. 4 Connect the ground wires. 5 Connect the valve assembly electrical connectors. 6 Connect the water tank microswitch electrical connectors.

Remove the Control Board
1 Open the locks on the ribbon cable connectors, and remove the ribbon cables from the control board.

Install the Tank Housing Cover 1 Place the tank housing cover onto the tank housing base. 2 Use a T-10 Torx bit to install the screws into the tank
housing cover. 3 Install the wire harness clips onto the tank housing cover.
Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.

2 Disconnect the electrical connectors from the control board.
3 Open the control board bracket tabs along the top of the control board.

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REMOVE THE CONTROL BOARD (continued) 4 Remove the control board from the unit.

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DISPLAY REMOVAL
To remove the display, first remove the top plate and the control board.

Remove the Top Plate
1 Use a T-20 Torx bit to remove the screws from the top and back of the unit.
2 Remove the top plate from the unit.

CONTROL BOARD INSTALLATION
Install the Control Board 1 Place the bottom of the control board into the control board
bracket supports. 2 Push the top of the control board into the control board
bracket. 3 Insert the ribbon cables into the ribbon cable connectors
and lock the ribbon cable connector.

Remove the Control Board
1 Open the locks on the ribbon cable connectors, and remove the ribbon cables from the control board.

4 Connect the electrical connectors to the control board.
Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.

2 Disconnect the electrical connectors from the control board.
3 Open the control board bracket tabs along the top of the control board.

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REMOVE THE CONTROL BOARD (continued)

4 Remove the control board from the unit.

3 Insert the ribbon cables into the ribbon cable connectors and lock the ribbon cable connector.

Remove the Display
1 Lift the tabs on the control board bracket at the top of the display.
2 Remove the display from the unit.

4 Connect the electrical connectors to the control board.
Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.

DISPLAY INSTALLATION
Install the Display 1 Place the bottom of the display into the channel on the
control board bracket. 2 Snap the top of the display into place.

CONTROL PANEL REMOVAL To remove the control panel, first remove the water tank, top plate, tank housing cover, valve assembly, tank housing base, control board, and display.
Remove the Water Tank 1 Touch Water on the control panel. 2 Remove the water tank from the unit.

Install the Control Board
1 Place the bottom of the control board into the control board bracket supports.
2 Push the top of the control board into the control board bracket.

Remove the Top Plate
1 Use a T-20 Torx bit to remove the screws from the top and back of the unit.

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REMOVE THE TOP PLATE (continued)

2 Remove the top plate from the unit.

6 Remove the valve assembly from the unit.

Remove the Tank Housing Cover
1 Remove the wire guides from the tank housing cover. 2 Use a T-10 Torx bit to remove the screws from the tank
housing cover. 3 Remove the tank housing cover from the unit.

Remove the Tank Housing Base
1 Use a T-20 Torx bit to remove the screws from the side of the tank housing base.
2 Push the tank housing base forward out of the control panel.
3 Remove the tank housing base from the unit.

Remove the Valve Assembly
1 Remove the electrical connectors from the water tank microswitch.
2 Remove the electrical connectors from the water valve.
3 Remove the ground wires.
4 Remove the drive motor tab from the tank housing cover.
5 Use a T-10 Torx bit to remove the screws from the valve assembly.

Remove the Control Board
1 Open the locks on the ribbon cable connectors, and remove the ribbon cables from the control board.

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REMOVE THE CONTROL BOARD (continued) 2 Disconnect the electrical connectors from the control board.

3 Remove the control panel from the unit.

3 Open the control board bracket tabs along the top of the control board.

4 Remove the control board from the unit.

Remove the Display
1 Lift the tabs on the control board bracket at the top of the display.
2 Remove the display from the unit.

4 Turn the control panel over.
5 Use a T-20 Torx bit to remove the screws from the control board bracket.
6 Remove the control board bracket from the control panel.

Remove the Control Panel
1 Remove the ground wires from the control panel.
2 Use a T-20 Torx bit to remove the screws from the control panel.

CONTROL PANEL INSTALLATION
Install the Control Panel 1 Place the control panel on the unit. 2 Use a T-20 Torx bit to install the screws into the control
panel. 3 Connect the ground wires to the control panel.
Install the Display 1 Place the bottom of the display into the channel on the
control board bracket. 2 Snap the top of the display into place.

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Install the Control Board
1 Place the bottom of the control board into the control board bracket supports.
2 Push the top of the control board into the control board bracket.
3 Insert the ribbon cables into the ribbon cable connectors and lock the ribbon cable connector.

Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.
Install the Water Tank Assembly 1 Install the water tank into the unit. 2 Push the water tank closed.

4 Connect the electrical connectors to the control board.
Install the Tank Housing Base 1 Insert the tank housing base into the control panel. 2 Use a T-20 Torx bit to install the screws into the tank
housing base.
Install the Valve Assembly 1 Place the valve assembly into the tank housing base. 2 Use a T-10 Torx bit to install the screws into the valve
assembly. 3 Install the drive motor tab into the notch in the tank housing
cover. 4 Connect the ground wires. 5 Connect the valve assembly electrical connectors. 6 Connect the water tank microswitch electrical connectors.
Install the Tank Housing Cover 1 Place the tank housing cover onto the tank housing base. 2 Use a T-10 Torx bit to install the screws into the tank
housing cover. 3 Install the wire harness clips onto the tank housing cover.

ROOM AIR FAN REMOVAL To remove the room air fan, first remove the top plate. Remove the Top Plate 1 Use a T-20 Torx bit to remove the screws from the top and
back of the unit. 2 Remove the top plate from the unit.
Remove the Room Air Fan 1 Disconnect the electrical connectors from the room air fan. 2 Rotate the room air fan clockwise.

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REMOVE THE ROOM AIR FAN (continued)

3 Lift the room air fan up and remove it from the unit.

2 Remove the top plate from the unit.

ROOM AIR FAN INSTALLATION
Install the Room Air Fan 1 Align the arrow on the room air fan with the open arrow on
the top exhaust duct. 2 Rotate the room air fan counterclockwise until the arrow on
top of the room air fan is aligned to closed on the top exhaust duct. 3 Connect the electrical connectors to the room air fan.
Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.

Remove the Loudspeaker
1 Disconnect the loudspeaker electrical connector from the control board.
2 Rotate the loudspeaker counterclockwise. 3 Remove the loudspeaker from the top exhaust duct.

LOUDSPEAKER REMOVAL To remove the loudspeaker, first remove the top plate.
Remove the Top Plate 1 Use a T-20 Torx bit to remove the screws from the top and
back of the unit.

LOUDSPEAKER INSTALLATION
Install the Loudspeaker 1 Insert the tabs of the loudspeaker into the top exhaust duct. 2 Rotate the loudspeaker clockwise until the arrow on top of
the loudspeaker is pointing to the front of the unit. 3 Connect the loudspeaker electrical connector to the control
board.

Install the Top Plate 1 Place the top plate on the unit.

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INSTALL THE TOP PLATE (continued) 2 Use a T-20 Torx bit to install the screws into the top plate.

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TEMPERATURE SENSOR 300C INSTALLATION

TEMPERATURE SENSOR 300C REMOVAL To remove the temperature sensor 300C, first remove the top plate.
Remove the Top Plate 1 Use a T-20 Torx bit to remove the screws from the top and
back of the unit. 2 Remove the top plate from the unit.

Install the Temperature Sensor 300C 1 Insert the temperature sensor 300C into the top exhaust
duct. 2 Use a T-15 Torx bit to install the screw into the temperature
sensor 300C. 3 Connect the temperature sensor 300C electrical connector
to the unit relay board.
Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.

Remove the Temperature Sensor 300C
1 Disconnect the temperature sensor 300C electrical connector from the unit relay board.
2 Use a T-15 Torx bit to remove the screw from the temperature sensor 300C.
3 Remove the temperature sensor 300C from the top exhaust duct.

STEPPER MOTOR REMOVAL To remove the stepper motor, first remove the top plate.
Remove the Top Plate 1 Use a T-20 Torx bit to remove the screws from the top and
back of the unit. 2 Remove the top plate from the unit.

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Remove the Stepper Motor 1 Disconnect the electrical connector from the stepper motor. 2 Use a flat-blade screwdriver to pry the tabs up on the
stepper motor retainer, while pulling the stepper motor toward the front of the unit.
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REMOVE THE STEPPER MOTOR (continued)

3 Remove the stepper motor from the unit.

2 Remove the top plate from the unit.

STEPPER MOTOR INSTALLATION
Install the Stepper Motor 1 Slide the stepper motor backward over the stepper motor
retainer until the stepper motor tabs lock into place. 2 Connect the electrical connector to the stepper motor.
Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.

Remove the Loudspeaker
1 Disconnect the loudspeaker electrical connector from the control board.
2 Rotate the loudspeaker counterclockwise. 3 Remove the loudspeaker from the top exhaust duct.

TOP EXHAUST DUCT REMOVAL To remove the top exhaust duct, first remove the top plate, loudspeaker, room air fan motor, temperature sensor 300C, and stepper motor.
Remove the Top Plate 1 Use a T-20 Torx bit to remove the screws from the top and
back of the unit.

Remove the Room Air Fan 1 Disconnect the electrical connectors from the room air fan. 2 Rotate the room air fan clockwise.

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REMOVE THE ROOM AIR FAN (continued)

3 Lift the room air fan up and remove it from the unit.

3 Remove the stepper motor from the unit.

Remove the Temperature Sensor 300C
1 Disconnect the temperature sensor 300C electrical connector from the unit relay board.
2 Use a T-15 Torx bit to remove the screw from the temperature sensor 300C.
3 Remove the temperature sensor 300C from the top exhaust duct.

Remove the Top Exhaust Duct
1 Use a T-20 Torx bit to extract the screws from the top exhaust duct.
2 Push the top exhaust duct toward the rear of the unit to disengage the top exhaust duct tabs.
3 Remove the top exhaust duct from the unit.

Remove the Stepper Motor
1 Disconnect the electrical connector from the stepper motor.
2 Use a flat-blade screwdriver to pry the tabs up on the stepper motor retainer, while pulling the stepper motor toward the front of the unit.

TOP EXHAUST DUCT INSTALLATION
Install the Top Exhaust Duct 1 Place the top exhaust duct tabs into the notches in the top
of the unit. 2 Pull the top exhaust duct toward the front of the unit to lock
the top exhaust duct tabs in place. 3 Use a T-20 Torx bit to install the screws into the top exhaust
duct.

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Install the Stepper Motor
1 Slide the stepper motor backward over the stepper motor retainer until the stepper motor tabs lock into place.
2 Connect the electrical connector to the stepper motor.

Remove the Top Plate
1 Use a T-20 Torx bit to remove the screws from the top and back of the unit.
2 Remove the top plate from the unit.

Install the Temperature Sensor 300C
1 Insert the temperature sensor 300C into the top exhaust duct.
2 Use a T-15 Torx bit to install the screw into the temperature sensor 300C.
3 Connect the temperature sensor 300C electrical connector to the unit relay board.

Install the Room Air Fan 1 Align the arrow on the room air fan with the open arrow on
the top exhaust duct. 2 Rotate the room air fan counterclockwise until the arrow on
top of the room air fan is aligned to closed on the top exhaust duct. 3 Connect the electrical connectors to the room air fan.
Install the Loudspeaker 1 Insert the tabs of the loudspeaker into the top exhaust duct. 2 Rotate the loudspeaker clockwise until the arrow on top of
the loudspeaker is pointing to the front of the unit. 3 Connect the loudspeaker electrical connector to the control
board.

Remove the Loudspeaker
1 Disconnect the loudspeaker electrical connector from the control board.
2 Rotate the loudspeaker counterclockwise. 3 Remove the loudspeaker from the top exhaust duct.

Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.
VALVE COUPLER ASSEMBLY REMOVAL To remove the valve coupler assembly, first remove the top plate, loudspeaker, room air fan motor, temperature sensor 300C, stepper motor, and top exhaust duct.

Remove the Room Air Fan 1 Disconnect the electrical connectors from the room air fan. 2 Rotate the room air fan clockwise.

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REMOVE THE ROOM AIR FAN (continued)

3 Lift the room air fan up and remove it from the unit.

3 Remove the stepper motor from the unit.

Remove the Temperature Sensor 300C
1 Disconnect the temperature sensor 300C electrical connector from the unit relay board.
2 Use a T-15 Torx bit to remove the screw from the temperature sensor 300C.
3 Remove the temperature sensor 300C from the top exhaust duct.

Remove the Top Exhaust Duct
1 Use a T-20 Torx bit to extract the screws from the top exhaust duct.
2 Push the top exhaust duct toward the rear of the unit to disengage the top exhaust duct tabs.
3 Remove the top exhaust duct from the unit.

Remove the Stepper Motor
1 Disconnect the electrical connector from the stepper motor.
2 Use a flat-blade screwdriver to pry the tabs up on the stepper motor retainer, while pulling the stepper motor toward the front of the unit.

Remove the Valve Coupler Assembly
1 Use a T-15 Torx bit to extract the screws from the stepping motor retainer.

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REMOVE THE VALVE COUPLER ASSEMBLY (continued)

2 Remove the stepping motor retainer.
3 Turn the top exhaust duct over, and remove the slider from the valve coupler.
4 Remove the slider from the unit.
5 With the top exhaust duct turned over, rotate the valve coupler until the tab lines up with the notch in the top exhaust duct.
6 Pull the valve coupler down out of the top exhaust duct.

Install the Temperature Sensor 300C
1 Insert the temperature sensor 300C into the top exhaust duct.
2 Use a T-15 Torx bit to install the screw into the temperature sensor 300C.
3 Connect the temperature sensor 300C electrical connector to the unit relay board.

Install the Room Air Fan
1 Align the arrow on the room air fan with the open arrow on the top exhaust duct.
2 Rotate the room air fan counterclockwise until the arrow on top of the room air fan is aligned to closed on the top exhaust duct.
3 Connect the electrical connectors to the room air fan.

VALVE COUPLER ASSEMBLY INSTALLATION
Install the Valve Coupler Assembly 1 Install the notch in the valve coupler into the top exhaust
duct. 2 Use a T-15 Torx bit to install the screws into the stepping
motor retainer. 3 Install the slider onto the valve coupler.

Install the Loudspeaker 1 Insert the tabs of the loudspeaker into the top exhaust duct. 2 Rotate the loudspeaker clockwise until the arrow on top of
the loudspeaker is pointing to the front of the unit. 3 Connect the loudspeaker electrical connector to the control
board.
Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.

Install the Top Exhaust Duct
1 Place the top exhaust duct tabs into the notches in the top of the unit.
2 Pull the top exhaust duct toward the front of the unit to lock the top exhaust duct tabs in place.
3 Use a T-20 Torx bit to install the screws into the top exhaust duct.

Install the Stepper Motor
1 Slide the stepper motor backward over the stepper motor retainer until the stepper motor tabs lock into place.
2 Connect the electrical connector to the stepper motor.

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BACK COMPONENT REMOVAL AND INSTALLATION

TEMPERATURE SENSOR REMOVAL To remove the temperature sensor, first remove the top plate.

2 Use a T-20 Torx bit to install the screw into the temperature sensor.
3 Connect the temperature sensor electrical connector to the control board.

Remove the Top Plate
1 Use a T-20 Torx bit to remove the screws from the top and back of the unit.
2 Remove the top plate from the unit.

Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.

Remove the Temperature Sensor
1 Disconnect the temperature sensor electrical connector from the control board.
2 Use a T-20 Torx bit to remove the screw from the temperature sensor.
3 Remove the temperature sensor from the unit.

CSO RESISTOR REMOVAL To remove the CSO resistor, first remove the top plate.
Remove the Top Plate 1 Use a T-20 Torx bit to remove the screws from the top and
back of the unit. 2 Remove the top plate from the unit.

Remove the CSO Resistor
1 Disconnect the electrical connector from the CSO resistor.
2 Use a T-20 Torx bit to remove the screw from the CSO resistor.

TEMPERATURE SENSOR INSTALLATION

Install the Temperature Sensor 1 Insert the temperature sensor into the back of the unit.

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REMOVE THE CSO RESISTOR (continued)

3 Remove the CSO resistor from the unit.

2 Remove the top plate from the unit.

CSO RESISTOR INSTALLATION
Install the CSO Resistor 1 Place the CSO resistor onto the back of the unit. 2 Use a T-20 Torx bit to install the screw into the CSO resistor. 3 Connect the electrical connectors to the CSO resistor.
Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.

Remove the Thermostat 280C
1 Disconnect the electrical connectors from the thermostat 280C.
2 Use a 9/32″ socket to remove the nuts from the thermostat 280C.
3 Remove the thermostat 280C from the unit.

THERMOSTAT 280C REMOVAL To remove the thermostat 280C, first remove the top plate.
Remove the Top Plate 1 Use a T-20 Torx bit to remove the screws from the top and
back of the unit.

THERMOSTAT 280C INSTALLATION
Install the Thermostat 280C 1 Place the thermostat 280C onto the studs on the back of
the unit. 2 Use a 9/32″ socket to install the nuts onto the thermostat
280C. 3 Connect the electrical connectors to the thermostat 280C.

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Install the Top Plate 1 Place the top plate on the unit.
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INSTALL THE TOP PLATE (continued) 2 Use a T-20 Torx bit to install the screws into the top plate.

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POWER CORD INSTALLATION

POWER CORD REMOVAL To remove the power cord, first remove the top plate.
Remove the Top Plate 1 Use a T-20 Torx bit to remove the screws from the top and
back of the unit. 2 Remove the top plate from the unit.

Install the Power Cord 1 Install the cable clamp onto the power cord. 2 Place the cable clamp and power cord in the unit. 3 Install the cable protector onto the power cord. 4 Connect the power cord electrical connectors to the unit
relay board and the back of the unit.
Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.

Remove the Power Cord
1 Disconnect the power cord electrical connectors from the unit relay board and the back of the unit.
2 Remove the cable protector from the power cord. 3 Compress the cable clamp and push it down out of the unit. 4 Remove the power cord from the unit.

UNIT RELAY BOARD REMOVAL To remove the unit relay board, first remove the top plate.
Remove the Top Plate 1 Use a T-20 Torx bit to remove the screws from the top and
back of the unit. 2 Remove the top plate from the unit.

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Remove the Unit Relay Board 1 Disconnect the electrical connectors from the unit relay
board. 2 Open the spacers one at a time, and pull the unit relay
board forward.
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REMOVE THE UNIT RELAY BOARD (continued)

3 Remove the unit relay board from the unit.

2 Remove the top plate from the unit.

UNIT RELAY BOARD INSTALLATION
Install the Unit Relay Board 1 Place the unit relay board onto the spacers. 2 Connect the electrical connectors to the unit relay board.
Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.

Remove the Rack Pull the rack forward out of the unit.

CONVECTION FAN MOTOR REMOVAL To remove the convection fan motor, first remove the top plate, racks, rack guides, rear baffle, and the hot air fan blade .
Remove the Top Plate 1 Use a T-20 Torx bit to remove the screws from the top and
back of the unit.

Remove the Rack Guide
1 Remove the rack guide nut. 2 Pull the front of the rack guide toward the center of the
oven. 3 Pull the rack guide forward out of the unit.

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Remove the Rear Baffle
1 Use a T-20 Torx bit to remove the screws from the rear baffle.
2 Remove the rear baffle from the unit.

3 Remove the convection fan motor from the unit.

Remove the Hot Air Fan Blade
TIP: The hot air fan blade nut is reverse threaded.
1 Use a 10 mm socket to remove the nut from the hot air fan blade.
2 Remove the washer and the hot air fan blade from the unit.
3 The washer and C-clip behind the hot air fan blade does not need to be removed unless the convection fan motor is being removed.

CONVECTION FAN MOTOR INSTALLATION
Install the Convection Fan Motor 1 Place the convection fan motor onto the back of the unit. 2 Use a T-20 Torx bit to install the screws into the convection
fan motor. 3 Connect the electrical wires to the convection fan motor.
Install the Hot Air Fan Blade 1 Install the C-clip and washer if they were removed for
replacement of the convection fan motor. 2 Install the hot air fan blade. 3 Install the washer.
TIP: The hot air fan blade nut is reverse-threaded. 4 Use a 10 mm socket to install the nut onto the hot air fan
blade.

Remove the Convection Fan Motor
1 Disconnect the electrical connectors from the convection fan motor.
2 Use a T-20 Torx bit to remove the screws from the convection fan motor.

Install the Rear Baffle 1 Place the rear baffle against the back wall of the oven
cavity. 2 Use a T-20 Torx bit to install the screws into the rear baffle.
Install the Rack Guide 1 Insert the rack guide rails into the rear baffle. 2 Place the indent in the rack guide over the rack guide stud. 3 Install the rack guide nut.

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Install the Rack 1 Insert the rack between the rails of the rack guide. 2 Push the rack into the oven.

6 Remove the drain pump assembly from the unit.

Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.

DRAIN PUMP ASSEMBLY REMOVAL To remove the drain pump assembly, first remove the top plate.
Remove the Top Plate 1 Use a T-20 Torx bit to remove the screws from the top and
back of the unit. 2 Remove the top plate from the unit.
Remove the Drain Pump Assembly 1 Disconnect the discharge hose to the water tank from the
drain pump assembly. 2 Disconnect the suction hose from the evaporator from the
drain pump assembly. 3 Use a flat-blade screwdriver to open the tabs on the drain
pump retainer. 4 Remove the drain pump assembly from the drain pump
retainer. 5 Disconnect the electrical connector from the drain pump
assembly.

DRAIN PUMP ASSEMBLY INSTALLATION
Install the Drain Pump Assembly 1 Connect the electrical connector to the drain pump
assembly. 2 Insert the drain pump assembly into the drain pump
retainer. 3 Connect the hose from the water tank to the drain pump
assembly discharge. 4 Connect the hose from the evaporator to the drain pump
suction.
Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.
DRAIN PUMP RETAINER REMOVAL To remove the drain pump retainer, first remove the top plate and drain pump assembly.
Remove the Top Plate 1 Use a T-20 Torx bit to remove the screws from the top and
back of the unit.

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REMOVE THE TOP PLATE (continued)

2 Remove the top plate from the unit.

2 Remove the drain pump retainer from the unit.

Remove the Drain Pump Assembly
1 Disconnect the discharge hose to the water tank from the drain pump assembly.
2 Disconnect the suction hose from the evaporator from the drain pump assembly.
3 Use a flat-blade screwdriver to open the tabs on the drain pump retainer.
4 Remove the drain pump assembly from the drain pump retainer.
5 Disconnect the electrical connector from the drain pump assembly.
6 Remove the drain pump assembly from the unit.

DRAIN PUMP RETAINER INSTALLATION
Install the Drain Pump Retainer 1 Place the drain pump retainer onto the absorbers. 2 Pull the absorber nipple through the holes in the drain pump
retainer.
Install the Drain Pump Assembly 1 Connect the electrical connector to the drain pump
assembly. 2 Insert the drain pump assembly into the drain pump
retainer. 3 Connect the hose from the water tank to the drain pump
assembly discharge. 4 Connect the hose from the evaporator to the drain pump
suction.

Remove the Drain Pump Retainer
1 Use a flat-blade screwdriver to separate the absorbers from the drain pump retainer.

Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.
EVAPORATOR REMOVAL To remove the evaporator, first remove the top plate.

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Remove the Top Plate 1 Use a T-20 Torx bit to remove the screws from the top and
back of the unit.
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REMOVE THE TOP PLATE (continued) 2 Remove the top plate from the unit.

2 Insert the evaporator into the retaining tabs on the unit.

3 Use a flat-blade screwdriver to pry out the tab over the evaporator.

4 Connect the condenser water nozzle to the evaporator.

5 Connect the hose from the evaporator to the drain pump suction.

6 Connect the electrical connector to the level measure pin.

7 Connect the electrical connectors to the evaporator.

Remove the Evaporator
1 Disconnect the hose that goes to the drain pump suction.
2 Disconnect the condenser water nozzle from the evaporator.
3 Disconnect the electrical connectors to the evaporator.
4 Disconnect the electrical connector to the level measure pin.
5 Disconnect the electrical connector to the temperature sensor.
6 Use a flat-blade screwdriver to press in the tab above the evaporator.
7 Lift the evaporator from the retaining brackets.
8 Remove the evaporator from the unit.

Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.
LEVEL MEASURE PIN REMOVAL To remove the level measure pin, first remove the top plate and evaporator.
Remove the Top Plate 1 Use a T-20 Torx bit to remove the screws from the top and
back of the unit. 2 Remove the top plate from the unit.

EVAPORATOR INSTALLATION
Install the Evaporator 1 Connect the electrical connector to the temperature sensor.

Remove the Evaporator
1 Disconnect the hose that goes to the drain pump suction.
2 Disconnect the condenser water nozzle from the evaporator.
3 Disconnect the electrical connectors to the evaporator.
4 Disconnect the electrical connector to the level measure pin.

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REMOVE THE EVAPORATOR (continued)
5 Disconnect the electrical connector to the temperature sensor.

2 Insert the level measure pin and pin tube into the evaporator.

6 Use a flat-blade screwdriver to press in the tab above the evaporator.

3 Connect the electrical connector to the level measure pin.

7 Lift the evaporator from the retaining brackets. 8 Remove the evaporator from the unit.

Install the Evaporator 1 Connect the electrical connector to the temperature sensor.

2 Insert the evaporator into the retaining tabs on the unit.

3 Use a flat-blade screwdriver to pry out the tab over the evaporator.

4 Connect the condenser water nozzle to the evaporator.

5 Connect the hose from the evaporator to the drain pump suction.

6 Connect the electrical connector to the level measure pin.

7 Connect the electrical connectors to the evaporator.

Remove the Level Measure Pin
TIP: Do not replace the level measure pin without a new pin tube.
1 Disconnect the electrical connectors to the level measure pin.
2 Pull the level measure pin out of the pin tube.
3 Use a flat-blade screwdriver to pry the pin tube from the evaporator.
4 Remove the level measure pin and pin tube from the unit.

Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.
TEMPERATURE SENSOR 100C REMOVAL To remove the temperature sensor 100C, first remove the top plate and evaporator.
Remove the Top Plate 1 Use a T-20 Torx bit to remove the screws from the top and
back of the unit. 2 Remove the top plate from the unit.

LEVEL MEASURE PIN INSTALLATION

Install the Level Measure Pin 1 Insert the level measure pin into the pin tube.

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Remove the Evaporator
1 Disconnect the hose that goes to the drain pump suction.
2 Disconnect the condenser water nozzle from the evaporator.
3 Disconnect the electrical connectors to the evaporator.
4 Disconnect the electrical connector to the level measure pin.
5 Disconnect the electrical connector to the temperature sensor.
6 Use a flat-blade screwdriver to press in the tab above the evaporator.
7 Lift the evaporator from the retaining brackets.
8 Remove the evaporator from the unit.

4 Remove the temperature sensor 100C and grommet from the unit.
TEMPERATURE SENSOR 100C INSTALLATION

Install the Temperature Sensor 100C
1 Insert the grommet into the evaporator.
2 Insert the temperature sensor 100C through the grommet into the evaporator.
3 Connect the electrical connector to the temperature sensor 100C.

Remove the Temperature Sensor 100C
TIP: Do not replace the temperature sensor 100C without a new grommet.
1 Disconnect the electrical connectors to the temperature sensor 100C.
2 Pull the temperature sensor 100C out of the grommet.
3 Use a flat-blade screwdriver to pry the grommet from the evaporator.

Install the Evaporator
1 Connect the electrical connector to the temperature sensor. 2 Insert the evaporator into the retaining tabs on the unit. 3 Use a flat-blade screwdriver to pry out the tab over the
evaporator. 4 Connect the condenser water nozzle to the evaporator. 5 Connect the hose from the evaporator to the drain pump
suction. 6 Connect the electrical connector to the level measure pin. 7 Connect the electrical connectors to the evaporator.

Install the Top Plate 1 Place the top plate on the unit. 2 Use a T-20 Torx bit to install the screws into the top plate.

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Back Component Removal and Installation

CSO (SWS #13543126)
service.subzero.com

FOOD PROBE SOCKET REMOVAL
WARNING Turn off the power to the product before starting this procedure.
To remove the food probe socket, first remove the racks, righthand rack guide, and food probe cover.

3 Remove the food probe cover, nut, and food probe cover seal from the unit.

Remove the Rack Pull the rack forward out of the unit.

Remove the Food Probe Socket
1 Use diagonal pliers to cut across the front joints of the food probe socket cover.

Remove the Rack Guide
1 Remove the rack guide nut. 2 Pull the front of the rack guide toward the center of the
oven. 3 Pull the rack guide forward out of the unit.

2 Lift the front of the food probe socket cover and bend it toward the back of the unit.
3 Disconnect the electrical wires from the food probe socket.
4 Remove the food probe socket from the unit.

Remove the Food Probe Cover 1 Lift the food probe cover. 2 Use an 11 mm socket to remove the food probe cover nut.

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Back Component Removal and Installation

CSO (SWS #13543126)
service.subzero.com

FOOD PROBE SOCKET INSTALLATION

2 Use diagonal pliers to cut across the front joints of the PTC heater cover.

Install the Food Probe Socket 1 Connect the electrical wires to the food probe socket. 2 Insert the food probe socket into the unit.
a) Place the food probe seal onto the food probe cover. b) Place the food probe cover over the food probe switch
threads. c) Use an 11 mm socket to install the food probe nut. 3 Bend the food probe socket cover back into place. 4 Cover the food probe socket cover with aluminum tape.
Install the Food Probe Cover 1 Place the food probe seal onto the food probe cover. 2 Place the food probe cover over the food probe switch
threads. 3 Use an 11 mm socket to install the food probe nut.

3 Lift the front of the PTC heater cover and bend it toward the back of the unit.
4 Cut the insulation out of the opening.
5 Disconnect the electrical wires from the PTC heater. 6 Use a 5/16″ socket or nut driver to remove the nut from the
PTC heater.
7 Remove the PTC heater from the unit.

Install the Rack Guide 1 Insert the rack guide rails into the rear baffle. 2 Place the indent in the rack guide over the rack guide stud. 3 Install the rack guide nut.

Install the Rack 1 Insert the rack between the rails of the rack guide. 2 Push the rack into the oven.
PTC HEATER REMOVAL WARNING
Turn off the power to the product before starting this procedure.
Remove the PTC Heater 1 Turn the unit upside down.

PTC HEATER INSTALLATION
Install the PTC Heater 1 Place the PTC heater into the unit. 2 Use a 5/16″ socket or nut driver to install the nut onto the
PTC heater. 3 Install the insulation. 4 Bend the PTC heater cover back into place. 5 Cover the PTC heater cover with aluminum tape.

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Troubleshooting
TROUBLESHOOTING

CSO (SWS #13543126)
service.subzero.com

TROUBLESHOOTING GUIDE

Error Code Error

E1

EEPROM read error

E2

EEPROM write error

E3

EEPROM status error

E4/F5 E5/F5 E6/F5

Control board MAINDATA invalid
Control board MAINDATA incompatible
Unit model identification invalid

E7/F5 E8/F5 E9/F0 E10/F0 E11/F0 E12/F0 E13/F11

Relay board MAINDATA invalid
Relay board MAINDATA incompatible
Temperature sensor short circuit
Temperature sensor interruption
Reference cavity temperature short circuit Reference cavity temperature interruption Cavity temperature over temperature

E14/F8

Critical relay error

Possible Cause Moisture on control board.
Moisture on control board.
Moisture on control board.
Reload software error.
Reload process error.

Test/Action 1. Inspect for steam leaks. 2. Replace the control board if error persists.
1. Inspect for steam leaks. 2. Replace the control board if error persists.
1. Inspect for steam leaks. 2. Replace the control board if error persists.
1. Turn the power to the unit off and then back on. 2. Replace the control board.
1. Turn the power to the unit off and then back on. 2. Replace the control board.

1. Inspect the connector and jumper on relay board X14-8 to X14-11 for loose or broken connection.
2. Turn the power to the unit off and then back on.
3. Replace the control board and relay board.

Reload software error. 1. Turn the power to the unit off and then back on. 2. Replace the relay board.

Reload software error. 1. Turn the power to the unit off and then back on. 2. Replace the relay board.

Short circuit in the temperature sensor or

1. Measure the resistance of the temperature sensor.

control board.

2. Replace the control board.

Interruption in the temperature sensor or

1. Measure the resistance of the temperature sensor.

control board.

2. Replace the control board.

Replace the control board.

Replace the control board.

Temperature sensor, relay error, or a programming issue.
Software or mechanical issue.

1. Verify the element relay is cycling. 2. Verify the temperature sensor resistance is correct. 3. Verify the cavity temperature is exceeding the maximum temperature. 4. Replace the control board and relay board.
1. If the firmware version is 06 or lower, load relay board firmware higher than K5.22800-07. 2. The software download is faulty. Repeat the download. 3. Turn the power to the unit off and then back on. 4. Replace the relay board and control board.

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CSO (SWS #13543126)

Troubleshooting

service.subzero.com

Troubleshooting Guide

Error Code E15/A1

Error
Maximum operating time exceeded

Possible Cause
Depending on the temperature, the cooking mode is cancelled if the unit is not being operated.

Test/Action
Instruct customer on operating times:
Cavity temperature < 212ºF: not cancelled.
Cavity temperature 212ºF – 302ºF: Cancelled in 48 hours.
Cavity temperature 302ºF – 392ºF: Cancelled in 20 hours.
Cavity temperature 392ºF – 572ºF: Cancelled in 10 hours.
Cavity temperature > 572ºF: Cancelled in five hours.

E16/A1

Maximum hold time exceeded

An operation is put on hold if waiting for operator input. Example: door is open, or water tank needs filling.

Instruct customer on maximum hold times. The operation is cancelled if the maximum hold time is exceeded.
Operating mode: One hour. Programs and recipes: Three hours.

E17/F1

Food probe temperature short circuit

Food probe, food probe socket, or wiring

1. Verify that the food probe is not too hot.

issue.

2. Measure the resistance of the food probe.

3. Verify the insulation foil is not touching the socket.

4. Replace the control board.

E18/F1

Food probe temperature open circuit

Open circuit in food probe wires.
Loose or broken wire or contact in food probe socket.

1. Plug in the food probe.
2. Measure the resistance on the X4 connector between X4-2 amd X4-3.
2. Replace the food probe.
3. Replace the food probe socket.
4. If error occurs during heating, replace the food probe socket.
5. Replace the control board.

E19/F28

Door lock not opening

Cavity temperature is > 1. Verify the cavity temperature is above 572ºF.

572ºF.

2. Measure resistance of the temperature sensor.

Door lock defective.

3. External TCO tripped.

Temperature sensor open circuit or

4. Replace the relay board.

interrupted.

E20/F28

Door lock not closing

Defective door lock or relay board.

1. Replace the door lock.

2. Replace the relay board.

E25/F3

Short circuit of temperature sensor 300C

1. Measure the resistance of temperature sensor 300C.
2. Replace the temperature sensor 300C.
3. Replace the relay board.

E26/F3

Open circuit in temperature sensor 300C

1. Measure resistance of the temperature sensor 300C.
2. Replace the temperature sensor 300C.
3. Replace the relay board.

E27/F17

Over temperature in temperature sensor 300C

Temperature limit of 1. Measure the resistance of the temperature sensor

the temperature sensor 300C.

300C exceeded.

2. Verify the room air fan operates at low, medium,

and high temperatures.

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CSO (SWS #13543126)

Troubleshooting
Troubleshooting Guide Error Code Error

E28 E29/F9

Descaling prompt triggered
Leaking steam

E30

Real-time clock (RTC)

is not initialized

E31

External RTC error

E32

Touch button error

E33/F12

Temperature – relay board short circuit

E34/F12 E35/F13

Temperature – relay board open circuit
Temperature – relay board over temperature

E36/F14 E37/F14 E38/F15

Temperature – control board short circuit
Temperature – control board open circuit
Temperature – control board over temperature

E39

LCD error

E41/F2

Short circuit evaporator

service.subzero.com

Possible Cause

Test/Action

Excessively warm air flowing over the temperature sensor 300C during self- clean from a bad door gasket.

3. Replace the temperature sensor 300C. 4. Replace the door gasket.

Past problems with

Descale the unit.

water system tripped a

descale message.

Slider stuck or defective.

1. Communicate the maximum amount of frozen food to the customer.

Cooking space not tight.
Door not closed properly.
Seal or conduit to cavity defective.
Too much cold food in cavity. Maximum of 6.5 pounds of frozen food for steam modes.

2. Replace the slider. 3. Inspect the door seal. 4. Inspect the door and hinges for proper closing. 5. If this error occurs with E44, replace the evaporator. 6. Inspect the connector for the temperature sensor 300C for dirt or moisture.

Replace the relay board.

1. Replace the control board. 2. Replace the relay board.

Moisture on control board.

1. Inspect the door seal. 2. Inspect the control board for excessive moisture. 3. Replace the control board.

Excessive moisture on the relay board.

1. Inspect the relay board for excessive moisture. 2. Inspect for steam leaks. 3. Replace the relay board.

Replace the relay board.

Power failure during operation.

1. Remove than restore power to the unit. 2. Verify room air fan operates at low, medium, and high temperatures. 3. Inspect if installation air supply is appropriate. 4. Replace the relay board.
Replace the control board.

Replace the control board.

Power failure during operation.

1. Turn the power to the unit off and then back on. 2. Verify the room air fan operates at all power levels. 3. Replace the control board.

Ribbon cable at X15 is loose or connector not

1. Inspect and reseat the ribbon cable at X15.

locked.

2. Replace the control board and display.

1. Inspect the temperature sensor 100C wiring.

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CSO (SWS #13543126)

Troubleshooting

service.subzero.com

Troubleshooting Guide

Error Code

Error
temperature sensor 100C

Possible Cause

Test/Action 2. Replace the temperature sensor 100C. 3. Replace the control board.

E42/F2 E43/F8

Open circuit evaporator temperature sensor 100C
Neutral relay K1 or K2 stuck

K1 or K2 relay failed self-test.

1. Replace the temperature sensor 100C. 2. Replace the control board.
For CSO: 1. Check the wiring to all elements. 2. Measure the resistance of the element, PTC heater, and evaporator element. 3. Replace the relay board. For SO24: 1. Check the wiring to all elements. 2. Measure the resistance of the bake element and the convection element. 3. Replace the relay board.

E44/F26

Increase in water temperature is slow

Defective evaporator heater.
Temperature sensor 100C temperature limiter is not resetting.
Defective level measure pin.

1. Check the resistance of the evaporator heater.
2. Check the resistance of the temperature sensor 100C.
3. Replace the evaporator, temperature sensor 100C, and level measure pin.
4. Replace the control board.

E45/F8

Actuator relay K3 stuck Element or relay board damaged.

1. Check the resistance of the element. 2. Check the resistance of the element to ground. 3. Replace the relay board.

E46/F8

Actuator relay K4 stuck Element or relay board damaged.

1. Check the resistance of the element. 2. Check the resistance of the element to ground. 3. Replace the relay board.

E47/F8

Actuator relay K5 stuck Element or relay board damaged.

1. Check the resistance of the element. 2. Check the resistance of the element to ground. 3. Replace the relay board.

E48/F8

Actuator relay K6 stuck Element or relay board damaged.

1. Check the resistance of the element. 2. Check the resistance of the element to ground. 3. Replace the relay board.

E49/F8

Actuator relay K7 stuck Element or relay board damaged.

1. Check the resistance of the element. 2. Check the resistance of the element to ground. 3. Replace the relay board.

E50/F25

Moisture on the control board

Room air fan not working.

Steam leak.

1. Check the operation of the room air fan. 2. Check the resistance of the room air fan. 3. Check for a steam leak from the door, gasket, and exhaust duct. 4. Replace the control board.

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CSO (SWS #13543126)

Troubleshooting

service.subzero.com

Troubleshooting Guide

Error Code E51/F6
E52/F10

Error Relay calibration invalid
Water tank leaking

Possible Cause

Test/Action Replace the relay board.

Water valve not tight.
Defective or damaged water sensing system.

1. Inspect the water valve. 2. Inspect the water tank. 3. Inspect the water sensing system. 4. Replace the control board.

E53 E54/F7

RTC calibration invalid
Actuator, relay board locked

Error E43 to E49 acknowledged 10 times. Relay board remains blocked for safety.

Replace the relay board.
1. Replace the relay board. 2. After replacing the relay board, determine the reason for error E43 to E49.

E55

Program control data Error only occurs

invalid

during operation.

1. Turn the power to the unit off and then back on again. Run unit again.

2. Replace the control board.

E56

Sequence control data Error only occurs

invalid

during operation.

1. Turn the power to the unit off and then back on again. Run unit again.

2. Replace the control board.

E57/U0

L1 voltage – over voltage

Voltage at L1 greater than 280 VAC for more than three seconds.

1. Problem with the power supply. 2. Moisture on the relay board. 3. Replace the relay board.

E58/U0

L2 voltage – over voltage

Voltage at L2 greater than 280 VAC for more

1. Problem with the power supply.

than three seconds. 2. Moisture on the relay board.

3. Replace the relay board.

E59/U1

L1 voltage – under voltage

Voltage at L1 was between 155 VAC and

1. Problem with the power supply.

176 VAC.

2. Replace the relay board.

E60/U1

L2 voltage – under voltage

Voltage at L2 was between 155 VAC and

1. Problem with the power supply.

176 VAC or 0 VAC.

2. Replace the relay board.

E61

L1 voltage – high voltage

Voltage at L1 was between 260 VAC and

1. Problem with the power supply.

280 VAC for more than 2. Moisture on the relay board.

three seconds.

3. Replace the relay board.

E62

L2 voltage – high voltage

Voltage at L2 was between 260 VAC and

1. Problem with the power supply.

280 VAC for more than 2. Moisture on the relay board.

three seconds.

3. Replace the relay board.

E63

L1 voltage – low voltage

Voltage at L1 was between 176 VAC and

1. Problem with the power supply.

198 VAC for more than 2. Moisture on the relay board.

three seconds.

3. Replace the relay board.

E64

L2 voltage – low voltage

Voltage at L2 was between 176 VAC and

1. Problem with the power supply.

198 VAC for more than 2. Moisture on the relay board.

three seconds.

3. Replace the relay board.

E66

Thermal cutout tripped The thermal cutout trips at 500ºF and

If the error is repeating:

resets automatically. 1. Check the resistance of the thermal cutout.

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CSO (SWS #13543126)

Troubleshooting

service.subzero.com

Troubleshooting Guide

Error Code Error

Possible Cause

Test/Action

2. Replace the relay board.

E67/F16

Thermostat 280C or thermostat 160C tripped

Most often a fan or temperature sensing issue.
Not a relay board problem without Exx/F8 or E54/F7.
If thermostat 280C or thermostat 160C has not tripped and E67 has happened more than once, check E66.

1. If E66 has occurred several times, update the software to baseline 77 or higher.
2. Check the resistance of the thermostat.
3. Check the operation of the convection fan and room air fan.
4. If E66 has occurred several times, replace the relay board.

E68/A1

Water tank is leaking

1. Inspect the water valve. 2. Inspect the water sensing system. 3. Replace the control board.

E69/F21 E70/F21

Water tank not initialized

Sequence errors E70, E71, and E72.

Water tank drive switch error

Rack and pinion blocked.

Switch on drive board not mounted correctly.

See E70, E71, or E72.
Inspect the water tank drive for blockage, wiring, and mounting. Replace the valve assembly.

E71/F21

Short circuit in water tank drive motor

1. Check the water tank drive motor wiring. 2. Replace the valve assembly. 3. Replace the relay board.

E72/F21

Open circuit in water tank drive motor

1. Check the water tank drive motor wiring. 2. Replace the valve assembly. 3. Replace the relay board.

E74/F22 E75/F22

Retractable door handle not initialized
Retractable door handle switch

Sequence errors E74, E75, E76, and E77.
Switch on drive board defective or not mounted correctly.

See E74, E75, E76, or E77.
1. Inspect the retractable handle drive. 2. Replace the retractable handle drive.

E76/F22

Short circuit retractable door handle drive

1. Check the retractable door handle drive wiring. 2. Replace the retractable door drive. 3. Replace the relay board.

E77/F22

Open circuit retractable door handle drive

1. Check the retractable door handle drive wiring. 2. Replace the retractable door drive. 3. Replace the relay board.

E78/F24
E79/F27 E80 E81/F23

Sump pumping off error Water inlet is not tight
Feed tank is not tight
Evaporator draining error

Level measure pin not sensing the correct level for the following reasons:

Not applicable to Wolf products.
Not applicable to Wolf products. Not applicable to Wolf products.
1. Descale the unit. 2. Manually drain the evaporator. 3. Measure the resistance of the drain pump and valve evaporator.

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CSO (SWS #13543126)

Troubleshooting

service.subzero.com

Troubleshooting Guide

Error Code Error

Possible Cause

Test/Action

Faulty level measure pin.

4. Check for a short circuit to the drain pump or valve evaporator.

The evaporator is heavily scaled.
The evaporator is filled with descaler.

5. Replace the level measure pin. 6. Replace the relay board. 7. Replace the control board.

The valve evaporator is defective.

The drain pump is defective.

A short circuit in the drain pump or level measure pin wiring.

E82/F10 E84
E85/F4

Water leak in sump Slider not initialized
Short circuit in stepper motor

Sequence errors E85, E86, and E87.

Not applicable to Wolf products. See E85, E86, or E87.
1. Inspect the stepper motor wiring. 2. Measure the resistance of the stepper motor. 3. Replace the stepper motor. 4. Replace the relay board.

E86/F4

Open circuit in the stepper motor

1. Inspect the stepper motor wiring. 2. Measure the resistance of the stepper motor. 3. Replace the stepper motor. 4. Replace the relay board.

E87/F4

Slider is blocked

Path of slider is restricted during normal operation.

1. Slider is blocked with grease. 2. Slider mechanism is too tight. Replace the slider.

E88

Slider in stop position Path of slider is restricted during

1. Slider is blocked with grease.

normal operation.

2. Slider mechanism is too tight. Replace the slider.

E89/F18 E90/F18 E91/F18
E92/F18 E93/F18
E94/F18 E95/F18 E97
E98 E99

Communication interruption – inverter
Inverter heat sink temperature defective
Temperature measurement of magnetron defective
Magnetron heating coil defective
Anode distance microwave system defective
Inverter hardware defective
Insufficient cooling of magnetron
Operating system: Watchdog control board
Operating system: Watchdog relay board
Operating system: ASSERT control board

Moisture on control board.

Not applicable to Wolf products. Not applicable to Wolf products. Not applicable to Wolf products.
Not applicable to Wolf products. Not applicable to Wolf products.
Not applicable to Wolf products. Not applicable to Wolf products. Replace the control board.
Replace the relay board. 1. Inspect the control board for moisture.

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CSO (SWS #13543126)

Troubleshooting

service.subzero.com

Troubleshooting Guide

Error Code Error

Possible Cause

Test/Action

2. Replace the control board if the error continues.

E100

Operating system: ASSERT relay board

Moisture on relay board.

1. Inspect the relay board for moisture. 2. Replace the relay board if the error continues.

E101/F30 No communication with control board

1. Inspect the connection between the relay board and control board.
2. Replace the control board.
3. Replace the relay board.

E102/F30 No communication with relay board

1. Inspect the connection between the relay board and control board.
2. Replace the relay board.
3. Replace the control board.

E103/F31
E104/F31 E105

Operating system: Communication between relay board and control board is incompatible
Operating system: CORE incompatible
Operating system: NVRAM-FLASH-PAGE write error

Software version of relay board and control

1. Reload the software.

board incompatible. 2. Replace the control board and relay board.

Moisture on control board.

Reload software.
1. Inspect the control board for moisture. 2. Replace the control board if the error continues.

E106

Operating system:

Moisture on control

NVRAM-FLASH-PAGE board.

delete error

1. Inspect the control board for moisture. 2. Replace the control board if the error continues.

E107

Operating system: NVRAM-FLASH structure data error

Moisture on control board.

1. Inspect the control board for moisture. 2. Replace the control board if the error continues.

E108

Operating system: NVRAM-FLASH checksum data error

Moisture on control board.

1. Inspect the control board for moisture. 2. Replace the control board if the error continues.

E109

Operating system:

Moisture on control

NVRAM fatal read error board.

1. Inspect the control board for moisture. 2. Replace the control board if the error continues.

E110

Operating system: CORE maximum SYNCH_DURATION

Moisture on control board.

1. Inspect the control board for moisture. 2. Replace the control board if the error continues.

E111/F5

Operating system: Control board checksum error

1. Reload software. 2. Replace the control board.

E112/F5

Operating system: Relay board checksum error

1. Reload software. 2. Replace the relay board.

E113 E114 E115/F29

Operating system: Control board kernel stack overflow
Operating system: Relay board kernel stack error
Door lock not initialized

Replace the control board.
Replace the relay board.
1. Check the wiring. 2. Replace the relay board.

E116

Door lock switch

1. Check the wiring.

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Troubleshooting

CSO (SWS #13543126)
service.subzero.com

Error Code E117/F29 E118/F29 E119/F5 E120/F5 E121/F5 E122/F5 E123/F5 E124/F5 E125/F5 E131/F5 E132/F5 E133/F32 E136/F16 E137/F16

Error

Possible Cause

Test/Action

2. Replace the relay board.

Short circuit door lock motor

1. Check the wiring. 2. Replace the relay board.

Open circuit door lock motor

1. Check the wiring. 2. Replace the relay board.

External firmware error

1. Reload the software. 2. Replace the control board.

SOUNDLIBRARY error

1. Reload the software. 2. Replace the control board.

PICTURELIBRARY error

1. Reload the software. 2. Replace the control board.

TEXTLIBRARY error

1. Reload the software. 2. Replace the control board.

FONTLIBRARY error

1. Reload the software. 2. Replace the control board.

MODELCONFIGLIBRA RY error

1. Reload the software. 2. Replace the control board.

PRESENTATIONLIBRA RY error

1. Reload the software. 2. Replace the control board.

FACTORYSETTINGLIB RARY error

1. Reload the software. 2. Replace the control board.

EAYCOOK data invalid

1. Reload the software. 2. Replace the control board.

Calibration value water level measurement error
Thermostat 160C defective
Actuator defective

Replace the control board.

Replace the thermostat 160C.

High resistance to element, bake element,

1. Check all the element wiring.

broil element, or

2. Check the resistance of all elements.

evaporator element.

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Technical Data
TECHNICAL DATA

CONVECTION STEAM OVEN TECHNICAL DATA

TIP: All resistance measurements were performed with the part disconnected from the unit and the unit at room temperature.

TIP: Resistance reading can vary ±10%.

CONVECTION STEAM OVEN

Data Point

Value

Element

22 , 230 VAC

Convection Fan Motor

70 , 230 VAC

Room Air Fan Motor

310 , 230 VAC

PTC Heater Measured at X17-1,2

310

Water Tank Drive Motor Drain Pump Stepper Motor Measured at X10-1,2

140 88
88

Temperature Sensor Loudspeaker Temperature Sensor 300C Evaporator Heater Temperature Sensor 100C Measured at X5-6,7

1090 7
255 k 40 , 230 VAC
110 k

Door Switch
CSO Resistor Thermostat 280C Halogen Lighting Water Valve Food Probe

Door Open – Open Door Closed – 0
1500 0 Either Side
165 8.7 M 55 k

CSO (SWS #13543126)
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Wiring Diagrams
WIRING DIAGRAMS
CSO WIRING DIAGRAM (SWS #13543126)

CSO (SWS #13543126)
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References

• Log in - Service Central
• Log in - Service Central
• Log in - Service Central
• Sub-Zero Classic, Designer and Pro Series Refrigerators

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