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Broan
Downdraft Ventilation System

Model # ILB3 Official Broan inline blower

Here are the diagrams and repair parts for Official Broan ILB3 inline blower, as well as links to manuals and error code tables, if available.

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Installation guide

Model diagram and schematic

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ALL PARTS
Showing 10 of 27 parts  |
Range Hood Fan Motor Mount 99100491
#16

Main asy diagram

Range hood fan motor mount

Part #99100491

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

Transition S414
#24

Main asy diagram

Transition

Part #S414

$78.63
In Stock
Blower Assembly 97016792
#BA

Main asy diagram

Blower assembly

Part #97016792

$137.99
In Stock
Downdraft Vent Blower Motor 99080485
#13

Main asy diagram

Downdraft vent blower motor

Part #99080485

Replaced by #S99080485

?
Manufacturer substitution
This part replaces 99080485. Substitute parts can look different from the original.
$156.60
In Stock
Lock Nut,8 99260558
#14

Main asy diagram

Lock nut,8

Part #99260558

Replaced by #S99260558

?
Manufacturer substitution
This part replaces 99260558. Substitute parts can look different from the original.
This item is not returnable
$4.82
In Stock
Housing Assembly 97014736
#1

Main asy diagram

Housing assembly

Part #97014736

Replaced by #S97014736

?
Manufacturer substitution
This part replaces 97014736. Substitute parts can look different from the original.
$48.06
In Stock
Scroll Assembly 97014775
#10

Main asy diagram

Scroll assembly

Part #97014775

Replaced by #S97014775

?
Manufacturer substitution
This part replaces 97014775. Substitute parts can look different from the original.
$45.88
In Stock
Trough 97014597
#25

Main asy diagram

Trough

Part #97014597

Replaced by #S97014597

?
Manufacturer substitution
This part replaces 97014597. Substitute parts can look different from the original.
$110.19 | 
8% OFF Phone Price : $120.19
In Stock
Trash Compactor Lock Nut 99260477
#17

Main asy 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
$3.64
In Stock
Adapter Pl 98005512
#8

Main asy diagram

Adapter pl

Part #98005512

Replaced by #S98005512

?
Manufacturer substitution
This part replaces 98005512. Substitute parts can look different from the original.
This item is not returnable
$4.53
In Stock

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 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 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 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.…

Read more
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 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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Troubleshooting tips for a rectractable downdraft vent

Troubleshooting tips for a rectractable downdraft vent

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

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