Thermal Zone
Central Air Conditioner

Model # CA18K-1S Official Thermal Zone split-system air conditioner

Here are the diagrams and repair parts for Official Thermal Zone CA18K-1S split-system air conditioner, 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 22 parts  |

Cond.motor 621634
#15

Split system diagram

Cond.motor

Part #621634

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

Capacitor 620780
#10

Split system diagram

Capacitor

Part #620780

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

Fan Blade 667261
#16

Split system diagram

Fan blade

Part #667261

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

Bottom Pan 494480Z
#1

Split system diagram

Bottom pan

Part #494480Z

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

Access Panel 374270Z
#12

Split system diagram

Access panel

Part #374270Z

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

Compressor Grommet (4) 668396
#21

Split system diagram

Compressor grommet (4)

Part #668396

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

Refigerant Valve (small) 663574
#4

Split system diagram

Refigerant valve (small)

Part #663574

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

Compressor 912969
#2

Split system diagram

Compressor

Part #912969

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

Coil Guard (formed) D06781
#5

Split system diagram

Coil guard (formed)

Part #D06781

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

Control Box Cover 374260Z
#20

Split system diagram

Control box cover

Part #374260Z

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: 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…

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

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…

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 spark plug

How to replace a lawn mower spark plug

Take a few minutes to replace the spark plug during your lawn mower's annual tune-up or if the spark plug is burnt or cr…

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower blade

How to replace a lawn mower blade

Check your lawn mower blade regularly and replaced it if it's bent or damaged. …

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower flywheel key on a flathead engine

How to replace a lawn mower flywheel key on a flathead engine

When you hit a hard object with your mower, the flywheel can shear to protect more expensive components. Learn how to re…

Repair difficulty
Time required
 45 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.…