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Bosch
Downdraft Ventilation System

Model # DHD905AUC Official Bosch downdraft ventilation system

Here are the diagrams and repair parts for Official Bosch DHD905AUC downdraft ventilation system, as well as links to manuals and error code tables, if available.

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Installation guide
Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 31 parts  |
Endcap, R 840021
#18

Down draft assy diagram

Endcap, r

Part #840021

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

Gearmotor 840035
#8

Down draft assy diagram

Gearmotor

Part #840035

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

Filter 840030
#20

Down draft assy diagram

Filter

Part #840030

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

Wire Plug 840043
#3

Down draft assy diagram

Wire plug

Part #840043

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

Control Board 423895
#22

Down draft assy diagram

Control board

Part #423895

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

Limit Switch 840049
#27

Down draft assy diagram

Limit switch

Part #840049

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

Crank 840023
#4

Down draft assy diagram

Crank

Part #840023

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

Top Brkt,l 840003
#13

Down draft assy diagram

Top brkt,l

Part #840003

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

U-bolt 840046
#5

Down draft assy diagram

U-bolt

Part #840046

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

Support 840015
#7

Down draft assy diagram

Support

Part #840015

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

Most common symptoms to help you fix your downdraft ventilation systems

Choose a symptom to see related downdraft vent repairs.

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Why won't my downdraft vent lower down?

Main causes: electrical power failure, up/down activation switch problems, vent gear motor failure…

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Why won't the fan on my downdraft vent blow air?

Main causes: fan control switch failure, bad blower fan motor, broken blower wheel, wiring failure…

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Why won't my downdraft vent rise up?

Main causes: lack of electrical power, up/down activation switch failure, bad vent gear motor…

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Why does the downdraft vent raise and lower continuously?

Main causes: problems with the vent limit switches, up/down activation switch failure…

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Why doesn't the downdraft vent fan pull much air?

Main causes: clogged grease filters, air duct problems, fan motor failure, broken blower wheel…

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Most common repair guides to help fix your downdraft ventilation systems

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

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How to replace a downdraft vent gear motor

How to replace a downdraft vent gear motor

The gear motor raises and lowers the air vent when you push the activating switch. Replace the gear motor if defective.…

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Repair difficulty
Time required
 15 minutes or less
How to replace a downdraft vent up/down button pad

How to replace a downdraft vent up/down button pad

The up/down button pad located on top of the air vent engages the activating switch when pushed to raise the air vent. R…

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Repair difficulty
Time required
 15 minutes or less
How to replace a downdraft vent fan control switch

How to replace a downdraft vent fan control switch

The fan control switch activates the blower motor and controls the fan speed. Replace the fan control switch if it's not…

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Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your downdraft ventilation systems

Use the advice and tips in these articles to get the most out of your downdraft vent.

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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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How to repair broken or damaged wires video

How to repair broken or damaged wires video

Learn how to repair broken, frayed or damaged wires in your appliances.…

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