Bosch
Electric Wall Oven

Model #HBN3450UC/10 Official Bosch wall oven

Here are the diagrams and repair parts for Bosch HBN3450UC-10 wall oven, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • 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”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

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

Search within this model
Parts List

Showing 10 of 80 parts

Wall Oven Temperature Sensor (replaces 642855)#307

Oven cavity Diagram

Sensor

Part #642855
Replaced by #00642855
?
Manufacturer substitution
This part replaces 642855. Substitute parts can look different from the original.
In Stock
$64.49 | 
7% OFF 
Phone Price: $69.49
Wall Oven Terminal Block#202

Pcb assy Diagram

Terminal box

Part #436364
Replaced by #00436364
?
Manufacturer substitution
This part replaces 436364. Substitute parts can look different from the original.
In Stock
$32.67
Catalyzer#303

Oven cavity Diagram

Catalyzer

Part #491572
Replaced by #00491572
?
Manufacturer substitution
This part replaces 491572. Substitute parts can look different from the original.
In Stock
$59.36
Wall Oven Wire Harness#NI

Control panel Diagram

Oven harness

Part #663791
Replaced by #00663791
?
Manufacturer substitution
This part replaces 663791. Substitute parts can look different from the original.
In Stock
$32.67
Wall Oven Door Lock Assembly#205

Pcb assy Diagram

Oven latch

Part #751505
Replaced by #00751505
?
Manufacturer substitution
This part replaces 751505. Substitute parts can look different from the original.
In Stock
$144.49 | 
6% OFF 
Phone Price: $154.49
Screw#401

Door assy Diagram

Screw

Part #189345

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

Wall Oven High-Limit Thermostat#206

Pcb assy Diagram

Temperature limit

Part #612548
Replaced by #00617877
?
Manufacturer substitution
This part replaces 612548. Substitute parts can look different from the original.
In Stock
$29.36
Bracket#412

Door assy Diagram

Bracket

Part #613179
Replaced by #00613179
?
Manufacturer substitution
This part replaces 613179. Substitute parts can look different from the original.
In Stock
$23.49
Wall Oven Upper Oven Bake Element#315

Oven cavity Diagram

Heater

Part #144723
Replaced by #00144723
?
Manufacturer substitution
This part replaces 144723. Substitute parts can look different from the original.
In Stock
$108.79 | 
8% OFF 
Phone Price: $118.79
Wall Oven Door Inner Glass#404

Door assy Diagram

Glass panel

Part #665058
Replaced by #00665058
?
Manufacturer substitution
This part replaces 665058. Substitute parts can look different from the original.
In Stock
$108.89 | 
8% OFF 
Phone Price: $118.89

Symptoms common to all wall oven

Choose a symptom to see related wall oven repairs.

Main causes: bad oven door lock assembly, faulty electronic control board, wiring failure
Main causes: broken broil element, faulty broil burner igniter, control system failure
Main causes: broken bake element, bad bake burner igniter, tripped thermal switch, control system failure
Main causes: lack of electrical power, bad electronic control board, faulty oven control thermostat
Main causes: lack of gas supply, broken igniter, tripped circuit breaker, broken oven element, tripped thermal fuse, control system failure
Main causes: faulty oven temperature sensor, control system problem, weak burner igniter, damaged oven element

Repair guides common to all wall oven

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

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.

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

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

Repair difficulty
Time required
 60 minutes or less
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 fuse.

Repair difficulty
Time required
 60 minutes or less

Articles and videos common to all wall oven

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

December 29, 2021

How to replace a microwave fuse

How to replace a microwave fuse

Learn about replacing a microwave fuse

December 29, 2021

Why is my microwave not heating?

Why is my microwave not heating?

Follow these tips when your microwave won't heat

December 27, 2021

How does a self-cleaning oven work?

How does a self-cleaning oven work?

Learn how the self-clean cycle works in an oven.