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Bosch
Electric Wall Oven

Model # HBL8450UC/10 Official Bosch electric built-in oven

Here are the diagrams and repair parts for Official Bosch HBL8450UC-10 electric built-in oven, as well as links to manuals and error code tables, if available.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Installation guide
Owner’s manual
Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 93 parts  |
Control Module 657431
#203

Pcb's assy diagram

Control module

Part #657431

Replaced by #12022212

?
Manufacturer substitution
This part replaces 657431. Substitute parts can look different from the original.
This item is not returnable
$321.71 | 
$12.00 OFF Phone Price : $333.71
In Stock
Oven Electronic Control Board 659614
#203A

Pcb's assy diagram

Oven electronic control board

Part #659614

The manufacturer no longer makes this part, and there's no substitute part

Motor 642845
#301

Oven assy diagram

Motor

Part #642845

Replaced by #00642845

?
Manufacturer substitution
This part replaces 642845. Substitute parts can look different from the original.
$165.59 | 
7% OFF Phone Price : $177.59
In Stock
Glass Panel 685879
#404

Door assy diagram

Glass panel

Part #685879

Replaced by #00770023

?
Manufacturer substitution
This part replaces 685879. Substitute parts can look different from the original.
$182.39 | 
6% OFF Phone Price : $194.39
In Stock
Wall Oven Extension Rack 478316
#602

Shelfs diagram

Wall oven extension rack

Part #478316

Replaced by #00478316

?
Manufacturer substitution
This part replaces 478316. Substitute parts can look different from the original.
$394.03 | 
$12.00 OFF Phone Price : $406.03
In Stock
Door Seal 144652
#403

Door assy diagram

Door seal

Part #144652

Replaced by #00144652

?
Manufacturer substitution
This part replaces 144652. Substitute parts can look different from the original.
$39.29 | 
13% OFF Phone Price : $45.29
In Stock
Range Oven Door Outer Panel 248979
#413

Door assy diagram

Range oven door outer panel

Part #248979

Replaced by #00248979

?
Manufacturer substitution
This part replaces 248979. Substitute parts can look different from the original.
$391.66 | 
$12.00 OFF Phone Price : $403.66
In Stock
Glass Panel 478310
#406

Door assy diagram

Glass panel

Part #478310

Replaced by #00478310

?
Manufacturer substitution
This part replaces 478310. Substitute parts can look different from the original.
$137.56 | 
8% OFF Phone Price : $149.56
In Stock
Bracket 613179
#409

Door assy diagram

Bracket

Part #613179

Replaced by #00613179

?
Manufacturer substitution
This part replaces 613179. Substitute parts can look different from the original.
$23.49
In Stock
Temperature Limit 612548
#202

Pcb's assy diagram

Temperature limit

Part #612548

Replaced by #00617877

?
Manufacturer substitution
This part replaces 612548. Substitute parts can look different from the original.
$29.36
In Stock

Most common symptoms to help you fix your wall oven

Choose a symptom to see related wall oven repairs.

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Why isn't my wall oven at the temperature I set?

Main causes: faulty oven temperature sensor, control system problem, weak burner igniter, damaged oven element…

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Why won't my wall oven bake?

Main causes: broken bake element, bad bake burner igniter, tripped thermal switch, control system failure…

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Why won't my wall oven broil?

Main causes: broken broil element, faulty broil burner igniter, control system failure…

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Why won't my wall oven door unlock?

Main causes: bad oven door lock assembly, faulty electronic control board, wiring failure…

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Why won't my wall oven heat?

Main causes: lack of gas supply, broken igniter, tripped circuit breaker, broken oven element, tripped thermal fuse, con…

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Why doesn't my wall oven work?

Main causes: lack of electrical power, bad electronic control board, faulty oven control thermostat…

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Most common repair guides to help fix your wall oven

These step-by-step repair guides will help you safely fix what’s broken on your wall oven.

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How to replace a wall oven thermal fuse

How to replace a wall oven thermal fuse

The thermal fuse trips to prevent the over from excessively overheating. The oven won't heat again until you replace the…

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Repair difficulty
Time required
 60 minutes or less
How to replace a wall oven control thermostat

How to replace a wall oven control thermostat

Get your oven temperature under your control by replacing a faulty oven control thermostat.…

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Repair difficulty
Time required
 60 minutes or less
How to replace a wall oven door outer glass panel

How to replace a wall oven door outer glass panel

Learn how to replace a damaged outer window panel on your wall oven door with these step-by-step instructions. …

Read more
Repair difficulty
Time required
 45 minutes or less

Effective articles & videos to help repair your wall oven

Use the advice and tips in these articles and videos to get the most out of your wall oven.

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5 Holiday Cleaning Tasks Essential to Boosting Your Home’s Image

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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Top questions about Sears and Sears PartsDirect

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