Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Tips to find your model number
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Mitsubishi
Air Handler

Model # MS-12BN Official Mitsubishi air conditioner heat pump

Here are the diagrams and repair parts for Official Mitsubishi MS-12BN air conditioner heat pump, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Installation guide

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

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

Search
ALL PARTS
Showing 10 of 109 parts  |
Box Asmby T2W521234
#10

Indoor unit diagram

Box asmby

Part #T2W521234

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

Lmp Hlr Asy T2W521329
#12

Indoor unit diagram

Lmp hlr asy

Part #T2W521329

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

Gude Vn Set T2W522042
#29

Indoor unit diagram

Gude vn set

Part #T2W522042

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

Box Asmby T2W522234
#11

Indoor unit diagram

Box asmby

Part #T2W522234

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

Piping Tape M21478917
#5

Accessories diagram

Piping tape

Part #M21478917

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

Coppr Tube M21992938
#22

Indoor unit diagram

Coppr tube

Part #M21992938

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

Sleeve M21475977
#1

Accessories diagram

Sleeve

Part #M21475977

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

Rmt Cntl Box T2W521080
#5

Remote controller diagram

Rmt cntl box

Part #T2W521080

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

Heater T2W521380
#33

Indoor unit diagram

Heater

Part #T2W521380

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

Band Piping M21480708
#4

Accessories diagram

Band piping

Part #M21480708

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

Effective articles & videos to help repair your air handlers

View all
Introducing new technical repair content that we’re developing for the Sears Technical Institute

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…

Read more

Parts & More