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Carrier
Heating & Cooling Combined Unit

Model # 48DT030040300 Official Carrier package unit

Here are the diagrams and repair parts for Official Carrier 48DT030040300 package unit, as well as links to manuals and error code tables, if available.

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

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Model diagram and schematic

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ALL PARTS
Showing 10 of 129 parts  |
Furnace Burner 50DK407030
#NI

Cabinet parts diagram

Furnace burner

Part #50DK407030

$39.89
In Stock
Central Air Conditioner Filter Dryer KH43LG072
#NI

Cabinet parts diagram

Central air conditioner filter dryer

Part #KH43LG072

$120.16 | 
9% OFF Phone Price : $132.16
In Stock
Temp Swtch HH18HA211
#NI

Cabinet parts diagram

Temp swtch

Part #HH18HA211

$30.74
In Stock
Control Board HK42FZ024
#NI

Cabinet parts 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
Plate 50SS500879
#NI

Cabinet parts diagram

Plate

Part #50SS500879

$558.65
In Stock
Switch 331055-706
#NI

Cabinet parts diagram

Switch

Part #331055-706

$76.35 | 
7% OFF Phone Price : $82.35
In Stock
Top Assembly 48GS400058
#NI

Cabinet parts diagram

Top assembly

Part #48GS400058

$327.00
In Stock
Core,valve EC39EZ067
#NI

Cabinet parts diagram

Core,valve

Part #EC39EZ067

$24.06
In Stock
Payne Fitting 305843-201
#NI

Cabinet parts diagram

Payne fitting

Part #305843-201

$9.03
In Stock
Insulation 48GS500110
#NI

Cabinet parts diagram

Insulation

Part #48GS500110

$61.04
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.

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Why is my furnace not blowing hot enough?

Thermostat problem, clogged air filter, burner failure…

Read more

Why isn’t my air conditioner cooling well?

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

Read more

Why isn’t my air conditioner cooling?

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

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Why won't my air conditioner turn on?

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

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Why won't my furnace turn on?

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

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Why won’t my furnace burners won’t stay lit?

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

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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.

View all
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…

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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…

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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.…

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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.

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Maintaining your air conditioner

Maintaining your air conditioner

Learn how to maintain your central air conditioner to keep it running smoothly all summer long.…

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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.…

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Top questions about Sears and Sears PartsDirect

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