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Whirlpool
Central Air Conditioner

Model # ALJ12020 Official Whirlpool air conditioner heat pump

Here are the diagrams and repair parts for Official Whirlpool ALJ12020 air conditioner heat pump, 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 94 parts  |
Cement 797403
#31K

Unit parts diagram

Cement

Part #797403

Replaced by #WP279368

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Manufacturer substitution
This part replaces 797403. Substitute parts can look different from the original.
BEST SELLER
$42.72 | 
12% OFF Phone Price : $48.72
In Stock
Valve Kit 978025
#31D

Unit parts diagram

Valve kit

Part #978025

Replaced by #WP978025

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Manufacturer substitution
This part replaces 978025. Substitute parts can look different from the original.
$29.51 | 
17% OFF Phone Price : $35.51
In Stock
Valve Kit 978026
#31E

Unit parts diagram

Valve kit

Part #978026

Replaced by #978026

?
Manufacturer substitution
This part replaces 978026. Substitute parts can look different from the original.
$34.19 | 
15% OFF Phone Price : $40.19
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Capacitor 470168
#31Q

Unit parts diagram

Capacitor

Part #470168

Replaced by #212643

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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
Valve Kit 978030
#31I

Unit parts diagram

Valve kit

Part #978030

Replaced by #978030

?
Manufacturer substitution
This part replaces 978030. Substitute parts can look different from the original.
$40.49 | 
13% OFF Phone Price : $46.49
In Stock
Screw 487358
Screw

Part #487358

Replaced by #WP965173

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Manufacturer substitution
This part replaces 487358. Substitute parts can look different from the original.
This item is not returnable
$5.85
In Stock
Seal 980789
#18

Cabinet parts diagram

Seal

Part #980789

Replaced by #WP854334

?
Manufacturer substitution
This part replaces 980789. Substitute parts can look different from the original.
$9.99 | 
9% OFF Phone Price : $10.99
In Stock
Washer 980778
#22

Air flow and control parts diagram

Washer

Part #980778

Replaced by #STD551025

?
Manufacturer substitution
This part replaces 980778. Substitute parts can look different from the original.
This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
In Stock
Screw 487895
Screw

Part #487895

Replaced by #WP488729

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Manufacturer substitution
This part replaces 487895. Substitute parts can look different from the original.
This item is not returnable
$4.39 | 
19% OFF Phone Price : $5.39
In Stock
Washer 487603
#21

Unit parts diagram

Washer

Part #487603

Replaced by #90315

?
Manufacturer substitution
This part replaces 487603. Substitute parts can look different from the original.
This item is not returnable
$3.40
In Stock

Symptoms for electric water heaters

Why does my water heater's heating element fail often?

Main causes: excessive tank sediment, high voltage supply…

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Why does the temperature of my hot water fluctuate?

Main causes: thermostats need adjustment, bad heating elements, faulty thermostats, tank sediment build-up, broken dip t…

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Repair guides for electric water heaters

How to replace a water heater element

How to replace a water heater element

If your water heater runs out of hot water quickly and one of the two heating elements has failed, replace the element f…

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Repair difficulty
Time required
 30 minutes or less
How to replace an electric water heater thermostat

How to replace an electric water heater thermostat

If the water temperature fluctuates or you don't get enough hot water, follow these instructions to replace your water h…

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Repair difficulty
Time required
 30 minutes or less
How to replace a water heater temperature and pressure (T&P) relief valve

How to replace a water heater temperature and pressure (T&P) relief valve

Replace a broken temperature/pressure (T&P) relief valve on an electric water heater using these instructions.…

Read more
Repair difficulty
Time required
 15 minutes or less

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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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