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Bosch
Electric Wall Oven

Model # HBN3520UC/03 Official Bosch oven

Here are the diagrams and repair parts for Official Bosch HBN3520UC-03 oven, as well as links to manuals and error code tables, if available.

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  • In the search box below, enter all or part of the part number or the part’s name.

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.

Owner’s manual
Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 96 parts  |
Bracket 613179
Bracket

Part #613179

Replaced by #00613179

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Manufacturer substitution
This part replaces 613179. Substitute parts can look different from the original.
$23.49
In Stock
Fan 665045
#204

Pcb assy diagram

Fan

Part #665045

Replaced by #00665045

?
Manufacturer substitution
This part replaces 665045. Substitute parts can look different from the original.
$187.14
In Stock
Temperature Limit 612548
#206A

Pcb 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
Fixing Kit 617877
#503

Vent assy diagram

Fixing kit

Part #617877

Replaced by #00617877

?
Manufacturer substitution
This part replaces 617877. Substitute parts can look different from the original.
$29.36
In Stock
Limiter 642844
#206

Pcb assy diagram

Limiter

Part #642844

Replaced by #00617877

?
Manufacturer substitution
This part replaces 642844. Substitute parts can look different from the original.
$29.36
In Stock
Bracket 610187
Bracket

Part #610187

Replaced by #00613179

?
Manufacturer substitution
This part replaces 610187. Substitute parts can look different from the original.
$23.49
In Stock
Inner Door 478701
Inner door

Part #478701

Replaced by #00688544

?
Manufacturer substitution
This part replaces 478701. Substitute parts can look different from the original.
$332.33 | 
$12.00 OFF Phone Price : $344.33
In Stock
Trim Plate 665059
#705

Lower door diagram

Trim plate

Part #665059

Replaced by #00680904

?
Manufacturer substitution
This part replaces 665059. Substitute parts can look different from the original.
$214.01 | 
5% OFF Phone Price : $226.01
In Stock
Catalyzer 491572
Catalyzer

Part #491572

Replaced by #00491572

?
Manufacturer substitution
This part replaces 491572. Substitute parts can look different from the original.
$59.36
In Stock
Terminal 642842
#202

Pcb assy diagram

Terminal

Part #642842

Replaced by #00642842

?
Manufacturer substitution
This part replaces 642842. Substitute parts can look different from the original.
$49.89
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 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 broil?

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

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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 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 doesn't my wall oven work?

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

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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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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 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. …

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Repair difficulty
Time required
 45 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 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…

Read more
Repair difficulty
Time required
 60 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

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

Get tips on completing essential holiday cleaning tasks to brighten your home.…

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

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

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

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