Central Air Conditioner

Model # MU12NN Official Mitsubishi split-type air conditioner

Here are the diagrams and repair parts for Official Mitsubishi MU12NN split-type air conditioner, as well as links to manuals and error code tables, if available.

By Schematic
SELECT DIAGRAM
?

This is the number corresponding to the part on the diagram / schematic

Browse Parts for
MU12NN Split-Type Air Conditioner
Service Po E02001641
#NI

A/c unit diagram

Service po

Part #E02001641

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

Base E02270290
#7

A/c unit diagram

Base

Part #E02270290

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

Terminal E02270374
#12

A/c unit diagram

Terminal

Part #E02270374

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

Grille E02141521
#2

A/c unit diagram

Grille

Part #E02141521

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

Fusible Pl E02474642
#NI

A/c unit diagram

Fusible pl

Part #E02474642

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

Outdoor He E02138630
#4

A/c unit diagram

Outdoor he

Part #E02138630

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

Capillary E02140936
#NI

A/c unit diagram

Capillary

Part #E02140936

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

Stop Valve E02150661
#16

A/c unit diagram

Stop valve

Part #E02150661

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

Back Panel E02270233
#17

A/c unit diagram

Back panel

Part #E02270233

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

Compressor E02270353
#10

A/c unit diagram

Compressor

Part #E02270353

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

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

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

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

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 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 recoil starter on an OHV engine

How to replace a lawn mower recoil starter on an OHV engine

Replace the recoil starter if it doesn't move when you pull the starter rope.…

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

How to replace a lawn mower wheel

Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix.…

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 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.…