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  |
Coppr Tube M21992938
#22

Indoor unit diagram

Coppr tube

Part #M21992938

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

Base Assmy T2W521290
#7

Outdoor unit diagram

Base assmy

Part #T2W521290

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

Rmt Cntl Asy T2W524426
#4

Remote controller diagram

Rmt cntl asy

Part #T2W524426

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

Pwr Pe Bord T2W521440
#15

Indoor unit diagram

Pwr pe bord

Part #T2W521440

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

Prplr Blde R01093115
#6

Outdoor unit diagram

Prplr blde

Part #R01093115

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

Rmt Cntl Box T2W522080
#6

Remote controller diagram

Rmt cntl box

Part #T2W522080

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

Cabinet T2W510232
#1

Outdoor unit diagram

Cabinet

Part #T2W510232

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

Motor Prtctr T2W394330
#26

Outdoor unit diagram

Motor prtctr

Part #T2W394330

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

Bearg Mnt M2180509
#24

Indoor unit diagram

Bearg mnt

Part #M2180509

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

Repair guides for side-by-side refrigerators

How to replace a foamed-in-place door gasket in a side-by-side refrigerator

How to replace a foamed-in-place door gasket in a side-by-side refrigerator

The door gasket seals the gap around the door to keep the cold air in and the warm air out. Replace a worn or damaged do…

Read more
Repair difficulty
Time required
 30 minutes or less
How to replace a refrigerator water valve

How to replace a refrigerator water valve

Replace the water valve that feeds water to the ice maker and water dispenser if it no longer controls the flow of water…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a defrost sensor in a side-by-side refrigerator

How to replace a defrost sensor in a side-by-side refrigerator

If frost is building up in the freezer of your side-by-side refrigerator, the defrost sensor could be at fault. You can …

Read more
Repair difficulty
Time required
 45 minutes or less

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