Broan
Downdraft Ventilation System

Model #634 Broan venting system

Here are the diagrams and repair parts for Broan 634 venting system, as well as links to manuals and error code tables, if available.


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Save to my profileInstallation guide

Showing 10 of 11 parts

Seal Strip

#6

Venting assy Diagram

Seal strip

Part #S99500322
?
Manufacturer substitution
This part replaces 99500322. Substitute parts can look different from the original.
This part replaces 99500322
This item is not returnable
$4.18

In Stock

PLATE DMPR

#8

Venting assy Diagram

Plate dmpr

Part #S98005584
?
Manufacturer substitution
This part replaces 98005584. Substitute parts can look different from the original.
This part replaces 98005584
$8.42

In Stock

Range Hood Outlet Box Cover Screw

#4

Venting assy Diagram

Range hood outlet box cover screw

Part #S99170245
?
Manufacturer substitution
This part replaces 99170245. Substitute parts can look different from the original.
This part replaces 99170245
This item is not returnable
$3.64

In Stock

FLAP,DAMPR

#2

Venting assy Diagram

Flap,dampr

Part #S98005581
?
Manufacturer substitution
This part replaces 98005581. Substitute parts can look different from the original.
This part replaces 98005581
This item is not returnable
$3.91

In Stock

BIRD SCRN

#3

Venting assy Diagram

Bird scrn

Part #S98005577
?
Manufacturer substitution
This part replaces 98005577. Substitute parts can look different from the original.
This part replaces 98005577
This item is not returnable
$3.38

In Stock

DAMPER ROD

#7

Venting assy Diagram

Damper rod

Part #S98005576
?
Manufacturer substitution
This part replaces 98005576. Substitute parts can look different from the original.
This part replaces 98005576
This item is not returnable
$3.08

In Stock

Seal Strip

#5

Venting assy Diagram

Seal strip

Part #S99500321
?
Manufacturer substitution
This part replaces 99500321. Substitute parts can look different from the original.
This part replaces 99500321
This item is not returnable
$4.18

In Stock

SCREW, SILVER

#4A

Venting assy Diagram

Screw, silver

Part #99150576

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

HOUSING,PAINTED

#1

Venting assy Diagram

Housing,painted

Part #97006176

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

DAMPER PLATE, ALUM.

#8A

Venting assy Diagram

Damper plate, alum.

Part #98005598

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

Symptoms common to all downdraft ventilation systems

Choose a symptom to see related downdraft vent repairs.

Main causes: lack of electrical power, up/down activation switch failure, bad vent gear motor
Main causes: fan control switch failure, bad blower fan motor, broken blower wheel, wiring failure
Main causes: problems with the vent limit switches, up/down activation switch failure
Main causes: clogged grease filters, air duct problems, fan motor failure, broken blower wheel
Main causes: electrical power failure, up/down activation switch problems, vent gear motor failure

Repair guides common to all downdraft ventilation systems

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

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. Replace the up/down button pad if damaged.

Repair difficulty
Time required
 15 minutes or less
November 1, 2015
By Lyle Weischwill
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.

Repair difficulty
Time required
 15 minutes or less
November 1, 2015
By Lyle Weischwill
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 doesn't run when activated.

Repair difficulty
Time required
 15 minutes or less

Articles and videos common to all downdraft ventilation systems

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

April 17, 2019

Downdraft vent common questions

By Sears PartsDirect staff

The most commonly asked questions about downdraft vents are answered by our experts.

January 18, 2016

How to use a multimeter to test electrical parts video

By Sears PartsDirect staff

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

February 23, 2015

Troubleshooting tips for a rectractable downdraft vent

By Sears PartsDirect staff

See what to check if you are having a problem with a retractable downdraft vent.