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Bosch
Downdraft Ventilation System

Model # DHD805AUC Official Bosch downdraft ventilation system

Here are the diagrams and repair parts for Official Bosch DHD805AUC downdraft ventilation system, 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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Installation guide
Owner’s manual

Model diagram and schematic

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Showing 10 of 36 parts  |
Trim Kit 41872
#NI

Down draft assy diagram

Trim kit

Part #41872

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

Trim Kit 41879
#NI

Down draft assy diagram

Trim kit

Part #41879

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

Trim Kit 41899
#NI

Down draft assy diagram

Trim kit

Part #41899

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

Snubber 840050
#29

Down draft assy diagram

Snubber

Part #840050

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

Trim Kit 41892
#NI

Down draft assy diagram

Trim kit

Part #41892

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

Accessory 41901
#NI

Down draft assy diagram

Accessory

Part #41901

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

Filter 840029
#20

Down draft assy diagram

Filter

Part #840029

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

Plate Assembly 840010
#23

Down draft assy diagram

Plate assembly

Part #840010

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

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 rise up?

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

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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 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 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 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 up/down switch

How to replace a downdraft vent up/down switch

The up/down switch starts the gear motor to raise and lower the air vent. Replace the up/down switch if defective.…

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Repair difficulty
Time required
 15 minutes or less
How to replace a downdraft vent blower motor

How to replace a downdraft vent blower motor

The blower motor spins the fan blade that removes smoke and steam from the cooktop area. Replace the blower motor if it …

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Repair difficulty
Time required
 15 minutes or less
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

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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