Mitsubishi
Central Air Conditioner

Model # PUY-A12NHA3-BS Official Mitsubishi split-system outdoor unit

Here are the diagrams and repair parts for Official Mitsubishi PUY-A12NHA3-BS split-system outdoor 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 34 parts  |

Reactor R01E22259
#19

Functional parts diagram

Reactor

Part #R01E22259

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

Propeller R01E07115
#2

Functional parts diagram

Propeller

Part #R01E07115

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

Cord Cover T7WE00649
#7

Structural parts diagram

Cord cover

Part #T7WE00649

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

Ser Panel R01E02518
#6

Structural parts diagram

Ser panel

Part #R01E02518

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

Cond Net R01E03684
#10

Structural parts diagram

Cond net

Part #R01E03684

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

Grille R01E30691
#1

Structural parts diagram

Grille

Part #R01E30691

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

Thermistor R01E99202
#24

Functional parts diagram

Thermistor

Part #R01E99202

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

Expansion Valve R01E75401
#10

Functional parts diagram

Expansion valve

Part #R01E75401

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

Thermistor R01N01202
#8

Functional parts diagram

Thermistor

Part #R01N01202

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

Exchanger T7WE58408
#22

Functional parts diagram

Exchanger

Part #T7WE58408

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

Symptoms for upright freezers

Main causes: clogged or frozen defrost drain tube…

Repair guides for upright freezers

How to replace a freezer door switch

How to replace a freezer door switch

When the door switch fails, the freezer can’t detect that the door is closed. Follow the steps in this repair guide to r…

Repair difficulty
Time required
 15 minutes or less
How to replace a freezer thermistor

How to replace a freezer thermistor

When the thermistor can’t sense the freezer temperature, the freezer is colder or warmer than the set temperature. Follo…

Repair difficulty
Time required
 45 minutes or less
How to replace a freezer evaporator fan

How to replace a freezer evaporator fan

Air won’t circulate to cool the freezer properly when the evaporator fan fails. Follow these step-by-step instructions t…

Repair difficulty
Time required
 45 minutes or less

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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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Top questions about Sears and Sears PartsDirect

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