KitchenAid KEBS278SSS - 27" Double Wall Oven User Manual (English)

Questions and Answers:

Y
Yvonne PenningtonJul 30, 2025
Why is my KitchenAid KEBS278SSS - 27" Double Wall overheating?
- T
  Thomas BernardJul 30, 2025
  If your KitchenAid oven is experiencing an over-temperature issue, start by inspecting all heating elements (bake, broil, and convection) to see if they are operating when the oven is off. If they are not, unplug the oven for 10 seconds, then plug it back in. Enter Diagnostic mode by pressing OFF, OFF, START, and cycle the bake, broil, and convection relays on and off to check if they are working correctly. If the relays aren't cycling, or the elements aren't cycling with the relays, check the wiring and connections between the appliance manager and the electrical elements for any damage. If the wiring is intact, replace the appliance manager, and then the user interface board. If the wiring is damaged, replace the harness.
A
alan06Aug 4, 2025
What to do if there is a User Interface/Appliance Manager Mismatch in my KitchenAid KEBS278SSS - 27" Double Wall Oven?
- C
  chendricksAug 4, 2025
  If you're seeing a 'User Interface/Appliance Manager Mismatch' error on your KitchenAid oven, here's what to do: First, try unplugging the oven for 10 seconds, then plug it back in. Enter Diagnostic mode by pressing OFF, OFF, START. Test the oven functions by pressing BAKE, BROIL (once for outer, again for inner element), SELF CLEAN, and COOK to see if all functions are working. If the error returns after 60 seconds, unplug the oven, remove the covers to access the oven controls, and replace the appliance manager. If the error still persists after another 60 seconds, replace the user interface.
W
wthomasAug 9, 2025
How to fix a disconnected, stuck, or shorted keypad on a KitchenAid KEBS278SSS - 27" Double Wall Oven?
- C
  Cynthia RomeroAug 9, 2025
  If your KitchenAid oven displays a 'Keypad Disconnected, Stuck, or Shorted Key' error, try these steps: First, unplug the oven. Check the keypad connector to ensure it's firmly connected. If the error persists, unplug the oven again and replace the keypad. If the error continues, unplug the oven and replace the cable connecting the user interface and keypad. As a last resort, unplug the oven and replace the oven user interface. After each step, remember to replace all parts and panels before operating and wait 60 seconds to see if the error code returns.
R
Robin BestAug 14, 2025
What to do if the door and latch switch do not agree on my KitchenAid KEBS278SSS - 27" Double Wall Oven?
- D
  danielsaaronAug 14, 2025
  If your KitchenAid oven shows a 'Door and Latch Switch Do Not Agree' error, here’s what to do: Enter the Diagnostic mode by pressing OFF, OFF, START. While in diagnostics, open the oven door. The second digit on the clock display should toggle between “1” and “0” as the door opens and closes. If it doesn't, unplug the oven and replace the door switch (or the entire door/latch motor assembly if the switch is integrated). If the digit still doesn't toggle, check the harness wires and connections between the appliance manager and the door/latch assembly for any damage and replace the door switch harness if necessary. If the wiring harness is good, replace the appliance manager.
C
Cheryl DominguezAug 20, 2025
How to resolve a 'No Cavity Size Command' error on a KitchenAid KEBS278SSS - 27" Double Wall?
- E
  Elizabeth CunninghamAug 20, 2025
  If your KitchenAid oven displays a 'No Cavity Size Command' error, the control should power up in cavity size select mode. Use key #6 (down) and key #3 (up) to scroll through and select the correct cavity size, then press the start key. If the error returns, unplug the oven for 10 seconds, then plug it back in. Enter Diagnostic mode by pressing OFF, OFF, START, and press #6 (down) once. If the cavity size is incorrect, press CLOCK to edit it, then use #6 (down) to find the right size and press START. If the error persists, unplug the oven and replace the user interface oven control.
M
Matthew CrosbyAug 25, 2025
What does it mean if my KitchenAid KEBS278SSS - 27" Double Wall displays a 'Warming Drawer Sensor Shorted or Open' error?
- N
  Nicholas BaxterAug 25, 2025
  The manual indicates that the oven is not equipped with a warming drawer feature. If this error occurs, press OFF, OFF, START to enter the Diagnostic mode and verify the error codes. If the error code returns, replace the user interface with the correct control associated with this product.

KitchenAid KEBS278SSS - 27" Double Wall Oven Specifications

General

Brand	KitchenAid
Model	KEBS278SSS - 27" Double Wall Oven
Category	Oven
Language	English

Summary

Forward

Goals and Objectives

Defines the purpose and objectives for In-Home Service Professionals using this guide.

General

Oven Safety

Provides essential safety warnings and guidelines for operating the oven safely.

Whirlpool Model & Serial Number Designations

Model & Serial Number Label and Tech Sheet Locations

Specifications

Installation Information

Installation Requirements

Details necessary tools, parts, and general requirements for safe and proper installation.

Electrical Requirements

Outlines the electrical voltage, phase, frequency, and wiring requirements for installation.

Installation Instructions

Prepare Built-In Double Oven

Steps to prepare the oven and its surroundings before the installation process begins.

Remove Oven Door

Detailed instructions on how to safely remove the oven door for installation or maintenance.

Make Electrical Connection

Guides through the process of connecting the oven to the home's electrical supply.

Install Oven

Step-by-step guide for physically placing the oven into its designated cabinet space.

Product Operation

Electronic Oven Control Overview

Explains the function of buttons, displays, and keypads on the electronic oven control panel.

Control Lock Functionality

Details how to activate and deactivate the control lock feature to prevent unintended use.

Dehydrating Functionality

Describes the dehydration process, factors affecting it, and operational notes.

Sabbath Mode

To Activate Sabbath Mode

Instructions for enabling the Sabbath Mode for the first time.

To Deactivate Sabbath Mode

Instructions for disabling the Sabbath Mode feature.

To Regularly Set Sabbath Mode

Steps to set the Sabbath Mode for regular, untimed operation.

Convection Broil

Temperature Probe Usage

Details the use and safety precautions for the oven's temperature probe.

Component Access

Component Locations

Illustrates the locations of various internal components within the upper oven assembly.

Removing the Keypad and User Interface Board

Removing the Oven Appliance Manager

Removing the Oven Light Transformer

Removing the AC Terminal Block

Removing the Upper Door Latch Assembly

Removing the Upper Broil Element and Temperature Sensor

Removing the Upper Broil Element

Procedure for safely removing the upper oven's broil element.

Removing the Upper Oven Temperature Sensor

Guide for safely removing the upper oven temperature sensor.

Removing the Upper Convection Ring Element and Convection Fan Motor

Removing the Upper Convection Ring Element

Instructions for safely detaching and removing the upper convection ring element.

Removing the Upper Convection Fan Motor

Procedure for safely accessing and removing the upper convection fan motor.

Removing Upper Halogen Light Assembly and Meat Probe Jack

Removing Upper Halogen Light Assembly

Steps to safely remove the upper oven's halogen light assembly.

Removing Upper Meat Probe Jack

Guide for safely detaching and removing the upper oven meat probe jack.

Removing Upper Blower Assembly, Blower Speed Resistor, and Oven Thermal Cutoff

Removing Upper Blower Assembly

Procedure for safely removing the upper oven's blower assembly.

Removing Upper Blower Speed Resistor

Instructions for safely removing the upper blower speed resistor.

Removing Upper Oven Thermal Cutoff

Guide for safely removing the upper oven thermal cutoff (TCO).

Removing Upper Hidden Bake Element

Removing Upper Oven Door Glass and Handle

Removing Upper Oven Door Gasket

Removing the Lower Door Latch Assembly

Removing the Lower Broil Element and the Lower Oven Temperature Sensor

Removing the Lower Broil Element

Procedure for safely removing the lower oven's broil element.

Removing the Lower Oven Temperature Sensor

Guide for safely removing the lower oven temperature sensor.

Removing the Lower Convection Ring Element and Convection Fan Motor

Removing the Lower Convection Ring Element

Instructions for safely detaching and removing the lower convection ring element.

Removing the Lower Convection Fan Motor

Procedure for safely accessing and removing the lower convection fan motor.

Removing Lower Halogen Light Assembly and Meat Probe Jack

Removing Lower Halogen Light Assembly

Steps to safely remove the lower oven's halogen light assembly.

Removing Lower Meat Probe Jack

Guide for safely detaching and removing the lower oven meat probe jack.

Removing Lower Blower Assembly, Blower Speed Resistor, and Oven Thermal Cutoff

Removing Lower Blower Assembly

Procedure for safely removing the lower oven's blower assembly.

Removing Lower Blower Speed Resistor

Instructions for safely removing the lower blower speed resistor.

Removing Lower Oven Thermal Cutoff

Guide for safely removing the lower oven thermal cutoff (TCO).

Removing the Lower Hidden Bake Element

Removing Lower Oven Door Glass and Handle

Component Testing

Upper Oven Components Testing

Provides guidelines and procedures for testing various components within the upper oven.

Convection Ring Element Testing

Instructions for testing the convection ring element's resistance.

Convection Fan Motor Testing

Instructions for testing the convection fan motor's resistance.

Broil Element Testing

Procedure for testing the resistance of the upper broil element.

Hidden Bake Element Testing

Instructions for testing the hidden bake element's resistance.

Door Latch Assembly Testing

Testing procedures for the door latch assembly switches and motor.

Oven Shutdown Thermal Cutoff (TCO) Testing

Procedure for testing the oven shutdown thermal cutoff (TCO).

Oven Light Transformer Testing

Instructions for testing the oven light transformer's primary and secondary windings.

Meat Probe Jack Testing

Instructions for testing the meat probe jack's resistance.

Blower Speed Resistor Testing

Procedure for testing the blower speed resistor's resistance.

Lower Oven Components Testing

Door Latch Assembly Testing

Testing procedures for the lower oven door latch assembly switches and motor.

Broil Element Testing

Procedure for testing the resistance of the lower broil element.

Oven Temperature Sensor Testing

Instructions for testing the lower oven temperature sensor's resistance.

Convection Ring Element Testing

Instructions for testing the lower convection ring element's resistance.

Convection Fan Motor Testing

Instructions for testing the lower convection fan motor's resistance.

Meat Probe Jack Testing

Instructions for testing the lower meat probe jack's resistance.

Blower Motor Testing

Instructions for testing the lower oven blower motor's resistance.

Blower Speed Resistor Testing

Procedure for testing the lower blower speed resistor's resistance.

Oven Shutdown Thermal Cutoff (TCO) Testing

Procedure for testing the lower oven shutdown thermal cutoff (TCO).

Hidden Bake Element Testing

Instructions for testing the lower oven's hidden bake element's resistance.

Diagnostics & Troubleshooting

Diagnostics

General diagnostic procedures and initial checks for troubleshooting oven issues.

Failure / Error Display Codes

Lists common error codes, their meanings, and suggested corrective actions.

Temperature Conversion and Calibration

Fahrenheit to Celsius Conversion

Instructions for converting oven temperature display between Fahrenheit and Celsius.

Adjust Oven Temperature Calibration

Procedure for calibrating the oven's temperature accuracy.

Programming the Cavity Size

Steps to program the correct cavity size for oven operation.

Keypads and Relay Logic

Keypad Layout

Diagrams illustrating the oven's keypad layout and control functions.

Relay Logic Overview

Explanation of how different cooking modes activate various oven relays.

Component Testing Summary

Wiring Diagram & Strip Circuits

Wiring Diagram

Schematic diagram illustrating the oven's electrical connections and pathways.

Strip Circuits

Detailed diagrams of individual circuits for diagnostic purposes.

Product Support and Warranty Information

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KitchenAid KEBS278SSS - 27" Double Wall Oven User Manual

Table of Contents

Questions and Answers:

KitchenAid KEBS278SSS - 27" Double Wall Oven Specifications

Summary

Forward

Goals and Objectives

General

Oven Safety

Whirlpool Model & Serial Number Designations

Model & Serial Number Label and Tech Sheet Locations

Specifications

Installation Information

Installation Requirements

Electrical Requirements

Installation Instructions

Prepare Built-In Double Oven

Remove Oven Door

Make Electrical Connection

Install Oven

Product Operation

Electronic Oven Control Overview

Control Lock Functionality

Dehydrating Functionality

Sabbath Mode

To Activate Sabbath Mode

To Deactivate Sabbath Mode

To Regularly Set Sabbath Mode

Convection Broil

Temperature Probe Usage

Component Access

Component Locations

Removing the Keypad and User Interface Board

Removing the Oven Appliance Manager

Removing the Oven Light Transformer

Removing the AC Terminal Block

Removing the Upper Door Latch Assembly

Removing the Upper Broil Element and Temperature Sensor

Removing the Upper Broil Element

Removing the Upper Oven Temperature Sensor

Removing the Upper Convection Ring Element and Convection Fan Motor

Removing the Upper Convection Ring Element

Removing the Upper Convection Fan Motor

Removing Upper Halogen Light Assembly and Meat Probe Jack

Removing Upper Halogen Light Assembly

Removing Upper Meat Probe Jack

Removing Upper Blower Assembly, Blower Speed Resistor, and Oven Thermal Cutoff

Removing Upper Blower Assembly

Removing Upper Blower Speed Resistor

Removing Upper Oven Thermal Cutoff

Removing Upper Hidden Bake Element

Removing Upper Oven Door Glass and Handle

Removing Upper Oven Door Gasket

Removing the Lower Door Latch Assembly

Removing the Lower Broil Element and the Lower Oven Temperature Sensor

Removing the Lower Broil Element

Removing the Lower Oven Temperature Sensor

Removing the Lower Convection Ring Element and Convection Fan Motor

Removing the Lower Convection Ring Element

Removing the Lower Convection Fan Motor

Removing Lower Halogen Light Assembly and Meat Probe Jack

Removing Lower Halogen Light Assembly

Removing Lower Meat Probe Jack

Removing Lower Blower Assembly, Blower Speed Resistor, and Oven Thermal Cutoff

Removing Lower Blower Assembly

Removing Lower Blower Speed Resistor

Removing Lower Oven Thermal Cutoff

Removing the Lower Hidden Bake Element

Removing Lower Oven Door Glass and Handle

Component Testing

Upper Oven Components Testing

Convection Ring Element Testing

Convection Fan Motor Testing

Broil Element Testing

Hidden Bake Element Testing

Door Latch Assembly Testing

Oven Shutdown Thermal Cutoff (TCO) Testing

Oven Light Transformer Testing

Meat Probe Jack Testing

Blower Speed Resistor Testing