Broan
Downdraft Ventilation System

Model #331H Official Broan exterior mounted blower

Here are the diagrams and repair parts for Broan 331H exterior mounted blower, as well as links to manuals and error code tables, if available.

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Installation guide

Showing 10 of 19 parts

AIRBOX ASY#1

Blower parts Diagram

Airbox assembly

Part #97011795
Replaced by #S97011795
?
Manufacturer substitution
This part replaces 97011795. Substitute parts can look different from the original.
In Stock
$377.27
Trash Compactor Lock Nut#5

Blower parts Diagram

Trash compactor lock nut

Part #99260477
Replaced by #S99260477
?
Manufacturer substitution
This part replaces 99260477. Substitute parts can look different from the original.
This item is not returnable
In Stock
$3.64
Damper#2

Blower parts Diagram

Damper

Part #98008507
Replaced by #S98008507
?
Manufacturer substitution
This part replaces 98008507. Substitute parts can look different from the original.
In Stock
$9.35
Grille#6

Blower parts Diagram

Grille

Part #98008511
Replaced by #S98008511
?
Manufacturer substitution
This part replaces 98008511. Substitute parts can look different from the original.
In Stock
$19.58
BLWR WHEEL#13

Blower parts Diagram

Blower wheel

Part #99020264
Replaced by #S99020264
?
Manufacturer substitution
This part replaces 99020264. Substitute parts can look different from the original.
In Stock
$70.31
COVER,WIRI#10

Blower parts Diagram

Wiring cover

Part #98008509
Replaced by #S98008509
?
Manufacturer substitution
This part replaces 98008509. Substitute parts can look different from the original.
This item is not returnable
In Stock
$7.25
Range Hood Damper Door Bushing#7

Blower parts Diagram

Range hood damper door bushing

Part #99100379
Replaced by #S99100379
?
Manufacturer substitution
This part replaces 99100379. Substitute parts can look different from the original.
This item is not returnable
In Stock
$3.37
CAP 15MFD#19

Blower parts Diagram

Cap 15mfd

Part #99271110
Replaced by #S99271110
?
Manufacturer substitution
This part replaces 99271110. Substitute parts can look different from the original.
In Stock
$38.19
Range Hood Motor Isolator#4

Blower parts Diagram

Range hood motor isolator

Part #99100484

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

Range Hood Grounding Screw (Green)#17

Blower parts Diagram

Range hood grounding screw (green)

Part #99150471
Replaced by #S99150471
?
Manufacturer substitution
This part replaces 99150471. Substitute parts can look different from the original.
This item is not returnable
In Stock
$3.64

Symptoms common to all downdraft ventilation systems

Choose a symptom to see related downdraft vent repairs.

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

November 1, 2015
By Lyle Weischwill
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.

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
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

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.

August 30, 2022

How to enjoy all the online benefits we offer on our Sears PartsDirect website

By Lyle Weischwill

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.

August 19, 2022

Are DIY appliance repairs safe?

By Lyle Weischwill

Find out how to stay safe when repairing your appliances.

February 23, 2015

Troubleshooting tips for a rectractable downdraft vent

By Lyle Weischwill

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