Carrier
Heating & Cooling Combined Unit

Model # 48XTN042090300 Official Carrier package unit

Here are the diagrams and repair parts for Official Carrier 48XTN042090300 package unit, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 146 parts  |

Control Board HK42FZ024
#65

Inside view diagram

Control board

Part #HK42FZ024

Replaced by #HK42FZ035

?
Manufacturer substitution
This part replaces HK42FZ024. Substitute parts can look different from the original.
$809.30
$12.00 OFF Phone Price : $821.30
In Stock
Pcb Assembly HK38EA008
Pcb assembly

Part #HK38EA008

Replaced by #HK38EA023

?
Manufacturer substitution
This part replaces HK38EA008. Substitute parts can look different from the original.
$971.19
$12.00 OFF Phone Price : $983.19
In Stock
Carrier Flue Box Cvr Assy 48DU400023
#120

Gas section diagram

Carrier flue box cvr assy

Part #48DU400023

In Stock
Exchanger 48XZ660004
#140

Inside view diagram

Exchanger

Part #48XZ660004

In Stock
Gas Valve EF33CW201
#136

Burner assy diagram

Gas valve

Part #EF33CW201

In Stock
Grille 50SZ500126
#31

Front view/rear view diagram

Grille

Part #50SZ500126

In Stock
Fan Plate 48GS500240
#83

Blower assy diagram

Fan plate

Part #48GS500240

In Stock
Bracket 48GS500186
#131

Burner assy diagram

Bracket

Part #48GS500186

In Stock
Side Panel 48GS500236
#37

Front view/rear view diagram

Side panel

Part #48GS500236

In Stock
Panel 48GS500235
#20

Front view/rear view diagram

Panel

Part #48GS500235

In Stock

Most common symptoms to help you fix your heating & cooling combined units

Choose a symptom to see related heating and air conditioning system repairs.

Dirty flame sensor, failed flame sensor, damaged burner, bad high limit switch…

Main causes: Errant thermostat settings, lack of power, bad interlock switches, lack of exhaust ventilation, wiring fail…

Dirty air filter, clogged condenser coils, low refrigerant charge, faulty compressor…

Thermostat problems, bad compressor/condenser fan capacitor, lack of refrigerant, failed compressor…

Thermostat problem, clogged air filter, burner failure…

Main causes: errant thermostat settings, lack of electrical power, clogged drain line, wiring failure, control failure.…

Most common repair guides to help fix your heating & cooling combined units

These step-by-step repair guides will help you safely fix what’s broken on your HVAC system.

How to unclog the air conditioner drain line

How to unclog the air conditioner drain line

The condensate drain line for your central air conditioner can clog with mold and mildew. Water will back up and start d…

Repair difficulty
Time required
 15 minutes or less
How to replace the furnace flame sensor

How to replace the furnace flame sensor

The flame sensor detects when furnace burner flames are lit. You may need to replace the flame sensor if flames only sta…

Repair difficulty
Time required
 15 minutes or less
How to replace a heating and air conditioning system thermostat

How to replace a heating and air conditioning system thermostat

The control thermostat for your HVAC system can stop working. This repair guide shows how to replace it.…

Repair difficulty
Time required
 30 minutes or less

Effective articles & videos to help repair your heating & cooling combined units

Use the advice and tips in these articles and videos to get the most out of your HVAC system.

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 enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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.…