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Broan
Downdraft Ventilation System

Model # 639 Official Broan venting system

Here are the diagrams and repair parts for Official Broan 639 venting 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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Model diagram and schematic

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ALL PARTS
Showing 9 of 9 parts  |
Wall Cap 97006251
#1A

Venting assy diagram

Wall cap

Part #97006251

Replaced by #S97006251

?
Manufacturer substitution
This part replaces 97006251. Substitute parts can look different from the original.
$34.52
In Stock
Foam Strip 99500323
#4

Venting assy diagram

Foam strip

Part #99500323

Replaced by #S99500323

?
Manufacturer substitution
This part replaces 99500323. Substitute parts can look different from the original.
This item is not returnable
$3.69
In Stock
Damper Flap 98005588
#3

Venting assy diagram

Damper flap

Part #98005588

Replaced by #S98005588

?
Manufacturer substitution
This part replaces 98005588. Substitute parts can look different from the original.
This item is not returnable
$2.81
In Stock
Damper Rod 98005585
#5

Venting assy diagram

Damper rod

Part #98005585

Replaced by #S98005585

?
Manufacturer substitution
This part replaces 98005585. Substitute parts can look different from the original.
This item is not returnable
$4.00
In Stock
Spring 99140100
#7

Venting assy diagram

Spring

Part #99140100

Replaced by #S99140100

?
Manufacturer substitution
This part replaces 99140100. Substitute parts can look different from the original.
This item is not returnable
$4.00
In Stock
Screen 98005586
#2

Venting assy diagram

Screen

Part #98005586

Replaced by #S98005586

?
Manufacturer substitution
This part replaces 98005586. Substitute parts can look different from the original.
This item is not returnable
$2.73
In Stock
Installation Manual 99040510C
#NI

Venting assy diagram

Installation manual

Part #99040510C

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

Housing(painted) 97006177
#1

Venting assy diagram

Housing(painted)

Part #97006177

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

Range Hood Damper Door Bushing 99100379
#6

Venting assy diagram

Range hood damper door bushing

Part #99100379

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 …

Read more
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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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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How to use a multimeter to test electrical parts video

How to use a multimeter to test electrical parts video

Learn how to use a multimeter to check for wiring problems in an appliance that's not working…

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