Carrier
Central Air Conditioner

Model # 38YSA042 SERIES300 Official Carrier heat pump

Here are the diagrams and repair parts for Official Carrier 38YSA042-SERIES300 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.

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 58 parts  |

Contactor HN51KC024
#31

Control box diagram

Contactor

Part #HN51KC024

Replaced by #90-244

?
Manufacturer substitution
This part replaces HN51KC024. Substitute parts can look different from the original.
BEST SELLER
$26.61
18% OFF Phone Price : $32.61
In Stock
Dfrost Cntrl CESO110063-02
#36

Control box diagram

Dfrost cntrl

Part #CESO110063-02

$187.57
6% OFF Phone Price : $199.57
In Stock
Central Air Conditioner Condenser Fan Motor (replaces Hc376e210a) HC37GE210
#50

Control box diagram

Central air conditioner condenser fan motor (replaces hc376e210a)

Part #HC37GE210

In Stock
Payne Thermostat HH18HA280
#49

Inside view diagram

Payne thermostat

Part #HH18HA280

In Stock
Lug HY90AZ009
#38

Control box diagram

Lug

Part #HY90AZ009

In Stock
Muffler LM10KK011
#77

Inside view diagram

Muffler

Part #LM10KK011

In Stock
Grommet P041-5103
#22

Inside view diagram

Grommet

Part #P041-5103

In Stock
Strainer KH11NH069
#78

Inside view diagram

Strainer

Part #KH11NH069

In Stock
Check Valve 321097-201
#83

Inside view diagram

Check valve

Part #321097-201

In Stock
Paint 313974-751
#NI

Top view diagram

Paint

Part #313974-751

In Stock

Effective articles & videos to help repair your central air conditioners

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.…