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Carrier
Heating & Cooling Combined Unit

Model # 48DTN042090300 Official Carrier package unit

Here are the diagrams and repair parts for Official Carrier 48DTN042090300 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  |
Switch,prs HK06WC061
#68

Control box/panel assy diagram

Switch,prs

Part #HK06WC061

$62.29
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
Pre.switch HK02ZA407
#96

Tube assy diagram

Pre.switch

Part #HK02ZA407

$29.00
In Stock
Strap Cap P281-0028
#93

Outside view diagram

Strap cap

Part #P281-0028

$18.83
In Stock
Exchanger 48XZ660004
#140

Outside view diagram

Exchanger

Part #48XZ660004

$1086.80
In Stock
Cover Assembly 48GS400552
#15

Inside assy diagram

Cover assembly

Part #48GS400552

$267.15
In Stock
Bolt AA06BS228
#84

Blower assy diagram

Bolt

Part #AA06BS228

This item is not returnable
$3.83
In Stock
Switch,tem HH18HA525
#123

Exchange assy diagram

Switch,tem

Part #HH18HA525

$20.49
In Stock
Gas Valve EF33CW201
#136

Burner assy diagram

Gas valve

Part #EF33CW201

$274.95
In Stock
Insulation 48GS500110
#121

Exchange assy 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…

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Why isn’t my air conditioner cooling well?

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

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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.

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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

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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