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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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

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

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

Mullion Left LB-78847
#2

Air conditioner diagram

Mullion left

Part #LB-78847

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

Coil-outdoor W/manifold LB-80733ADA
#10

Air conditioner diagram

Coil-outdoor w/manifold

Part #LB-80733ADA

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

Mount Pkg-comp 15J1301PR
#12D

Air conditioner diagram

Mount pkg-comp

Part #15J1301PR

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

Valve-service Liquid Line, 3/8" 54G9701
#13

Air conditioner diagram

Valve-service liquid line, 3/8"

Part #54G9701

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

Bracket (included With Key 27) N/P
Bracket (included with key 27)

Part #N/P

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

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

How to replace a lawn mower transmission

How to replace a lawn mower transmission

Learn how to replace the transmission on your lawn mower if it's locked up or won't drive the wheels.…

Repair difficulty
Time required
 60 minutes or less
How to rebuild a lawn mower carburetor

How to rebuild a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Rebuild the carburetor if it's clogged or leaks.…

Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower ignition coil on a flathead engine

How to replace a lawn mower ignition coil on a flathead engine

If the spark plug doesn't fire when you try to start the mower, you could have a defective ignition coil. Follow these s…

Repair difficulty
Time required
 30 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 walk-behind lawn mower.

Maintaining your air conditioner

Maintaining your air conditioner

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

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

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

Get tips to help keep your central AC running all summer long…

Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…