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Bosch HBL8x50UC User Manual

Bosch HBL8x50UC
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SERVICE MANUAL
for
300, 500, and 800 Series
Built-in Wall Ovens
This manual contains information that is necessary for
servicing the following Bosch electric built-in wall
ovens:
HBL8x50UC, HBL57x0UC, HBL56x0UC,
HBL54x0UC, HBL35x0UC, HBL33x0UC,
HBN56x0UC, HBN54x0UC, HBN35x0UC,
HBN34x0UC, HBN3350UC
This manual is designed to be used by qualified
service personnel only. Due to the complexity and the
risk of high-voltage electrical shock, Bosch does not
recommend that customers service their own units.
Models:
HBL8x50UC, HBL57x0UC, HBL56x0UC,
HBL54x0UC, HBL35x0UC, HBL33x0UC,
HBN56x0UC, HBN54x0UC, HBN35x0UC,
HBN34x0UC, HBN3350UC
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Bosch HBL8x50UC Specifications

General IconGeneral
Fuel TypeElectric
Self-CleaningYes
Control TypeTouch Control
Wi-Fi ConnectivityYes
Precision CookingYes
Temperature ProbeYes
Door StyleFrench Door
Installation TypeBuilt-In
ColorStainless Steel
Weight150 lbs
Voltage240 V
Frequency60 Hz
Oven Capacity4.6 cu. ft.
Cooking ModesBake, Broil, Proof, Warm
Interior LightYes, Halogen
Number of Oven Racks3

Summary

General Information for Bosch Ovens

Bosch Oven Models

Lists the Bosch 300, 500, and 800 series oven models and their configurations.

Bosch Oven Features and Options

Details the various features and options available across different Bosch oven models.

Bosch Oven Data Plate Identification

Explains the location and purpose of the unit's data plate, including FD number interpretation.

Bosch Oven Warranty Information

Outlines the product warranty period and coverage for defects in materials and workmanship.

Oven Operation Guide

Bosch Oven Element Duty Cycles

Describes how oven elements cycle on/off based on cooking mode and preheat.

Interpreting Preheat Element Duty Cycles

Explains how to interpret the element duty cycle table for preheating.

Oven Preheat Sequence of Events

Illustrates the sequence of events during oven preheat for various cooking modes.

Bosch Oven Cooling Fan Operation

Details the operation and shut-off behavior of the oven's cooling fans.

Component Accessibility for Bosch Ovens

Serviceable Components from the Front

Lists components accessible from the front of the oven after partial removal.

Serviceable Components from the Top

Lists components accessible from the top after full removal from the wall.

Serviceable Components from the Rear

Lists components accessible from the rear after full removal and back panel removal.

Bosch Oven Service and Repair Procedures

Bosch Oven Door Information

Discusses oven door types and general information.

Removing and Replacing Bosch Oven Doors

Provides detailed steps and safety precautions for removing and reinstalling oven doors.

Bosch Oven Door Latch/Motor Assembly

Explains the door latch mechanism, its function, and troubleshooting.

Bosch Oven Cavity Lights Operation

Details the operation of cavity lights based on button presses and oven state.

Replacing Bosch Oven Lamps

Guides on replacing halogen and incandescent oven lamps with safety notes.

High Temperature Cutout (HTC) Reset

Explains the function and reset procedure for the High Temperature Cutout.

Bosch Convection Fan and Ring Element

Describes the convection fan and ring element configuration and usage in different models.

Testing the Bosch Temperature Sensor

Details how to test the temperature sensor and its resistance readings.

Setting Bosch Oven Temperature Offsets

Explains how customers can adjust oven temperature settings for calibration.

Bosch Oven Broil Element Service

Describes the broil element specifications and testing procedures.

Bosch Oven User Interface Overview

Shows variations of user interfaces and how to remove them.

Removing the Bosch User Interface

Provides step-by-step instructions for removing the user interface assembly.

Bosch PC Control Module (Relay Board)

Guides on accessing and troubleshooting the PC control module.

Bosch Power Supply Module

Explains the function of the power supply module in providing DC voltage.

Bosch Halogen Light Transformer Service

Details the halogen light transformer specifications and testing.

Testing the Bosch Convection Fan Motor

Provides instructions for testing the convection fan motor.

Bosch Upper Oven Bake Element Service

Describes how to remove and reinstall the upper oven bake element.

Removing the Upper Oven Bake Element

Step-by-step guide for removing the upper oven bake element.

Reinstalling the Upper Oven Bake Element

Instructions for reinstalling the upper oven bake element.

Bosch Upper Oven Cooling Fan Motor

Details testing the upper oven cooling fan motor and Hall effect sensor.

Bosch Oven Error Codes and Service Mode

Bosch Oven Error Code Table

Lists error codes, their causes, and recommended actions for troubleshooting.

Bosch Oven Service Mode and Option Codes

Explains how to enter service mode and set option codes for module replacement.

Service Mode for HBL3/HBN3 Ovens

Specific steps to enter service mode for HBL3/HBN3 models.

Service Mode for HBL5/HBN5 Ovens

Specific steps to enter service mode for HBL5/HBN5 models.

Service Mode for HBL8 Ovens

Specific steps to enter service mode for HBL8 models.

Bosch Oven Model Option Codes

Provides a table of option codes for various Bosch oven models.

Demo Mode and Troubleshooting

Bosch Oven Demo Mode Activation

Explains how to activate demo mode for display and light testing.

Bosch Oven Troubleshooting Guide

Provides a visual guide for troubleshooting unit behaviors and failures.

Bosch Oven Component Testing Procedures

Details how to perform specific tests on components using pin headers or open circuits.

Wiring Diagrams and Schematics

Bosch Oven Wire Color Key

Provides a key for identifying wire colors used in wiring diagrams.

Bosch Oven Element Strip Diagrams

Presents strip diagrams for oven elements (bake, broil, ring) for upper and lower cavities.

Additional References for Bosch Ovens

Bosch Oven QuickFinder Resources

Refers to additional documents and resources available on QuickFinder for further information.

Bosch Oven Technical Support Contact

Provides contact information for Bosch technical support.

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