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Carrier
Air Handler

Model # 40BNC018301 Official Carrier air handler

Here are the diagrams and repair parts for Official Carrier 40BNC018301 air handler, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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Showing 10 of 28 parts  |
Control Box Asy(12-15) 51303540500
#11

Cabinet parts diagram

Control box asy(12-15)

Part #51303540500

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

Motor 51301300400
#9

Cabinet parts diagram

Motor

Part #51301300400

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

Bracket Unit Mounting 51304478800
#1

Cabinet parts diagram

Bracket unit mounting

Part #51304478800

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

Sensor 51303502660
#26

Cabinet parts diagram

Sensor

Part #51303502660

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

Bracket, R 51300900600
#7

Cabinet parts diagram

Bracket, r

Part #51300900600

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

Remote Ctl 51303504406
#27

Cabinet parts diagram

Remote ctl

Part #51303504406

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

Grille Assembly 51308448490
#19

Cabinet parts diagram

Grille assembly

Part #51308448490

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

Filter 51301030400
#22

Cabinet parts diagram

Filter

Part #51301030400

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

Unit Body 51308443300
#5

Cabinet parts diagram

Unit body

Part #51308443300

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

Drain Hose 51202360500
#23

Cabinet parts diagram

Drain hose

Part #51202360500

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

Symptoms for gas cooktops

Why won't my cooktop's gas burners ignite or spark?

Main causes: burner igniter switch failure, bad spark module, dirty or damaged spark electrode, wiring failure, lack of …

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Why isn't my cooktop's gas burner heating properly?

Main causes: gas supply problem, faulty pressure regulator, clogs in burner or orifice, burner valve failure…

Read more

Why do my cooktop's spark igniters keep clicking?

Main causes: stuck burner igniter switch, wet igniter switch contacts, faulty spark module…

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Repair guides for gas cooktops

How to replace a spark igniter switch on a gas cooktop

How to replace a spark igniter switch on a gas cooktop

Follow these step-by-step instructions to fix the surface burner ignition system on your gas cooktop by replacing the sp…

Read more
Repair difficulty
Time required
 45 minutes or less
How to replace a spark module on a gas cooktop

How to replace a spark module on a gas cooktop

No flame on your gas cooktop? Installing a new spark module could be the fix you need.…

Read more
Repair difficulty
Time required
 30 minutes or less

Effective articles & videos to help repair your air handlers

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Introducing new technical repair content that we’re developing for the Sears Technical Institute

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…

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