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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  |
Contactor HN51KB024
#63

Control box/panel assy 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 Filter Dryer KH43LG072
#105

Tube assy diagram

Central air conditioner filter dryer

Part #KH43LG072

$120.16 | 
9% OFF Phone Price : $132.16
In Stock
Blower HD46RE120
#87

Blower assy diagram

Blower

Part #HD46RE120

Replaced by #58MV660002

?
Manufacturer substitution
This part replaces HD46RE120. Substitute parts can look different from the original.
$1522.17 | 
$12.00 OFF Phone Price : $1534.17
In Stock
Control Board HK42FZ024
#65

Outside 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
Pre.switch HK02ZA407
#96

Tube assy diagram

Pre.switch

Part #HK02ZA407

$29.00
In Stock
Carrier Coil.cond Al/cu 50DT400072
#100

Front view/rear view diagram

Carrier coil.cond al/cu

Part #50DT400072

$1600.60
In Stock
Core,valve EC39EZ067
#111

Tube assy diagram

Core,valve

Part #EC39EZ067

$22.03
In Stock
Motor HC35GE238
Motor

Part #HC35GE238

$520.82
In Stock
Support 48GS500243
#41

Outside view diagram

Support

Part #48GS500243

$47.16
In Stock
Switch 331055-706
#95

Tube assy diagram

Switch

Part #331055-706

$76.35 | 
7% OFF Phone Price : $82.35
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

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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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 15 minutes or less
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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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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 prevent the 2 most common AC failures from ruining your summer

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