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Whirlpool
Central Air Conditioner

Model # CAW18B2A1 Official Whirlpool air conditioner heat pump

Here are the diagrams and repair parts for Official Whirlpool CAW18B2A1 air conditioner heat pump, as well as links to manuals and error code tables, if available.

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Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 170 parts  |
Screw 487910
Screw

Part #487910

Replaced by #WP488729

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Manufacturer substitution
This part replaces 487910. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$4.39 | 
19% OFF Phone Price : $5.39
In Stock
Screw, 8 X 1 488480
#4

Air flow and control diagram

Screw, 8 x 1

Part #488480

Replaced by #WP489069

?
Manufacturer substitution
This part replaces 488480. Substitute parts can look different from the original.
This item is not returnable
$4.39 | 
19% OFF Phone Price : $5.39
In Stock
Capacitor 470168
#53A

Air flow and control diagram

Capacitor

Part #470168

Replaced by #212643

?
Manufacturer substitution
This part replaces 470168. Substitute parts can look different from the original.
This item is not returnable
$50.09 | 
11% OFF Phone Price : $56.09
In Stock
Cable Tie 857547
#3

Unit diagram

Cable tie

Part #857547

Replaced by #WPW10339879

?
Manufacturer substitution
This part replaces 857547. Substitute parts can look different from the original.
This item is not returnable
$4.37 | 
19% OFF Phone Price : $5.37
In Stock
Refrigerant Access Valve, 5/8-in 978029
#48H

Unit diagram

Refrigerant access valve, 5/8-in

Part #978029

Replaced by #978029

?
Manufacturer substitution
This part replaces 978029. Substitute parts can look different from the original.
$41.18
In Stock
Ground Wire 857022
#3

Cabinet diagram

Ground wire

Part #857022

Replaced by #857078

?
Manufacturer substitution
This part replaces 857022. Substitute parts can look different from the original.
$10.49 | 
16% OFF Phone Price : $12.49
In Stock
Valve Kit 978025
#48D

Unit diagram

Valve kit

Part #978025

Replaced by #WP978025

?
Manufacturer substitution
This part replaces 978025. Substitute parts can look different from the original.
$29.51 | 
17% OFF Phone Price : $35.51
In Stock
Bend 855199
#2

Unit diagram

Bend

Part #855199

Replaced by #WP855199

?
Manufacturer substitution
This part replaces 855199. Substitute parts can look different from the original.
This item is not returnable
$4.33
In Stock
Nut 486197
#47

Unit diagram

Nut

Part #486197

Replaced by #488660

?
Manufacturer substitution
This part replaces 486197. Substitute parts can look different from the original.
$16.79 | 
11% OFF Phone Price : $18.79
In Stock
Cement 797403
#53F

Air flow and control diagram

Cement

Part #797403

Replaced by #WP279368

?
Manufacturer substitution
This part replaces 797403. Substitute parts can look different from the original.
$42.72 | 
12% OFF Phone Price : $48.72
In Stock

Symptoms for water softeners

Choose a symptom to see related water softener repairs.

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Why does my water softener overflow?

Main causes: faulty brine valve assembly, bad rotor valve…

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Why is my softened water salty?

Main causes: clogged drain hose, faulty rotor valve, leaky rotor valve seals…

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Why isn't my water softener using salt?

Main causes: salt bridge inside the salt tank, bad timer, valve motor failure, faulty rotor valve, clogged venturi…

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Why does my water softener leak water?

Main causes: loose water line connections, cracked water-carrying components, bad rotor valve seals…

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Why is there no display on my water softener?

Main causes: lack of electrical power, bad power transformer, faulty timer…

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Why isn't my water softener softening my water?

Main causes: empty salt tank, salt bridge, depleted resin, clogged or damaged venturi, broken rotor position switch, fai…

Read more

Why are water softener resin beads in my water?

Main causes: broken resin tank screen, bad resin tank seals, cracked upper distributor in resin tank…

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Why isn't my water softener meter working?

Main causes: broken water flow meter, faulty timer, water flow to softener is bypassed…

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Repair guides for water softeners

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

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How to replace a water softener venturi

How to replace a water softener venturi

The venturi valve in your water softener draws brine water from the salt tank to the resin tank for regeneration. Follow…

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Repair difficulty
Time required
 15 minutes or less
How to replace a water softener rotor position switch

How to replace a water softener rotor position switch

The rotor position switch detects the position of the valve rotor. If the rotor position switch fails, follow these step…

Read more
Repair difficulty
Time required
 30 minutes or less
How to replace a water softener timer

How to replace a water softener timer

The timer is the control board you use to program the water softener. If the timer isn’t accepting commands when you pus…

Read more
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 water softener.

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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

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…

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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.…

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