Carrier
Central Air Conditioner

Model # 38TKB042 SERIES300 Official Carrier condensing unit

Here are the diagrams and repair parts for Official Carrier 38TKB042-SERIES300 condensing unit, 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 55 parts  |

Contactor HN51KB024
#25

Control box/cover diagram

Contactor

Part #HN51KB024

Replaced by #90-244

?
Manufacturer substitution
This part replaces HN51KB024. Substitute parts can look different from the original.
BEST SELLER
$26.61
18% OFF Phone Price : $32.61
In Stock
Central Air Conditioner Condenser Fan Motor (replaces Hc35sl231, Hc39ge232, Hc39ge236) HC39GE237
#40

Fan blade/pan base diagram

Central air conditioner condenser fan motor (replaces hc35sl231, hc39ge232, hc39ge236)

Part #HC39GE237

$360.93
$12.00 OFF Phone Price : $372.93
In Stock
Valve Piston EA52PH082
#48

Top/control box cover diagram

Valve piston

Part #EA52PH082

In Stock
Fan Prop LA01EA024
#41

Fan blade/pan base diagram

Fan prop

Part #LA01EA024

In Stock
Grommet P041-5102
#17

Compressor/condenser coil 1 diagram

Grommet

Part #P041-5102

This item is not returnable
In Stock
Carrier Start Assist Ptc Kit KAACS0201PTC
#NI

Inlet grille/service panel diagram

Carrier start assist ptc kit

Part #KAACS0201PTC

In Stock
Valve EC39DM061
#NI

Inlet grille/service panel diagram

Valve

Part #EC39DM061

This item is not returnable
In Stock
Furnace Blower Fan Motor HC40GE230
#NI

Inlet grille/service panel diagram

Furnace blower fan motor

Part #HC40GE230

$881.49
$12.00 OFF Phone Price : $893.49
In Stock
Lug HY90AZ009
#38

Control box/cover diagram

Lug

Part #HY90AZ009

In Stock
Paint 313974-751
#NI

Inlet grille/service panel diagram

Paint

Part #313974-751

In Stock

Symptoms for electric water heaters

Main causes: excessive tank sediment, high voltage supply…

Main causes: thermostats need adjustment, bad heating elements, faulty thermostats, tank sediment build-up, broken dip t…

Repair guides for electric water heaters

How to replace a water heater element

How to replace a water heater element

If your water heater runs out of hot water quickly and one of the two heating elements has failed, replace the element f…

Repair difficulty
Time required
 30 minutes or less
How to replace an electric water heater thermostat

How to replace an electric water heater thermostat

If the water temperature fluctuates or you don't get enough hot water, follow these instructions to replace your water h…

Repair difficulty
Time required
 30 minutes or less
How to replace a water heater temperature and pressure (T&P) relief valve

How to replace a water heater temperature and pressure (T&P) relief valve

Replace a broken temperature/pressure (T&P) relief valve on an electric water heater using these instructions.…

Repair difficulty
Time required
 15 minutes or less

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.…