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Lennox
Central Air Conditioner

Model # 1853 Official Lennox condensing unit

Here are the diagrams and repair parts for Official Lennox 1853 condensing unit, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 44 parts  |
Contactor 65C6901
#22

Air conditioner diagram

Contactor

Part #65C6901

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

Fan Motor 65G6001
#17

Air conditioner diagram

Fan motor

Part #65G6001

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

Switch P-8-10978
#21B

Air conditioner diagram

Switch

Part #P-8-10978

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

Contactor P-8-7736
#22A

Air conditioner diagram

Contactor

Part #P-8-7736

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

Compressor 3 Ton, 200-230/60/3, Cope 66J4501
#12A

Air conditioner diagram

Compressor 3 ton, 200-230/60/3, cope

Part #66J4501

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

Fitting Press Tap 86G6401
#21E

Air conditioner diagram

Fitting press tap

Part #86G6401

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

Support-coil (2) LB-57953C
#10A

Air conditioner diagram

Support-coil (2)

Part #LB-57953C

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

Muffler 51H1301
#21

Air conditioner diagram

Muffler

Part #51H1301

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

Well-thermometer LB-54392CF
#15

Air conditioner diagram

Well-thermometer

Part #LB-54392CF

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

Cap Seal P-8-3187

#NI05

All parts diagram

Cap seal

Part #P-8-3187

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

Symptoms for gas grills

Choose a symptom to see related gas grill repairs.

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Why is my gas grill not hot enough?

Main causes: nearly empty fuel tank, faulty pressure regulator, burner tube clogs, bad burner tube alignment to gas valv…

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What should I do about grease flare-ups in my gas grill?

Main causes: damaged or dirty flame tamers, corroded firebox, accumulated grease and debris in the grease pan…

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Do I have to replace a broken wheel on a gas grill?

Main cause: worn wheel…

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Why won't some burners light on my gas grill?

Main causes: clogged burner tubes, cracked insulators on igniter electrodes, wiring failures, bad ignition module, manif…

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Why don't the burners on my gas grill get gas?

Main causes: empty fuel tank, tripped flow-limiting device on the pressure regulator, faulty manifold valves, burner tub…

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Repair guides for gas grills

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

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How to replace a gas grill ignition module

How to replace a gas grill ignition module

Follow these steps to replace the ignition module if it doesn't produce a spark. …

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Repair difficulty
Time required
 15 minutes or less
How to replace a gas grill burner

How to replace a gas grill burner

Replace a damaged burner on your gas grill in less than 15 minutes and with just pliers and a screwdriver for tools.…

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Repair difficulty
Time required
 15 minutes or less
How to replace a gas grill wheel

How to replace a gas grill wheel

Replace a broken or damaged wheel in less than 15 minutes.…

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Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your central air conditioners

Use the advice and tips in these articles and videos to get the most out of your gas grill.

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Maintaining your air conditioner

Maintaining your air conditioner

Learn how to maintain your central air conditioner to keep it running smoothly all summer long.…

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How to prevent the 2 most common AC failures from ruining your summer

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