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Carrier
Heating & Cooling Combined Unit

Model # 48SDN042090300 Official Carrier package unit

Here are the diagrams and repair parts for Official Carrier 48SDN042090300 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 103 parts  |
Circ Board LH33WP003
#NI

Cabinet parts diagram

Circ board

Part #LH33WP003

$495.60 | 
$12.00 OFF Phone Price : $507.60
In Stock
Furnace Inducer Vent Motor Assembly 48GS400649
#NI

Cabinet parts diagram

Furnace inducer vent motor assembly

Part #48GS400649

$708.46 | 
$12.00 OFF Phone Price : $720.46
In Stock
Temp Swtch HH18HA211
#NI

Cabinet parts diagram

Temp swtch

Part #HH18HA211

$25.71
In Stock
Furnace Heat Exchanger Cover 48GS400108
#NI

Cabinet parts diagram

Furnace heat exchanger cover

Part #48GS400108

$325.53 | 
$12.00 OFF Phone Price : $337.53
In Stock
Furnace Burner 50DK407030
#NI

Cabinet parts diagram

Furnace burner

Part #50DK407030

$39.89
In Stock
Heater HT32BH282
#NI

Cabinet parts diagram

Heater

Part #HT32BH282

$169.08
In Stock
Motor HC35GE238
#94

Cabinet parts diagram

Motor

Part #HC35GE238

$520.82
In Stock
Grille 50SZ400156
#4

Cabinet parts diagram

Grille

Part #50SZ400156

$555.72
In Stock
Heat Exchr 48GS660007
#NI

Cabinet parts diagram

Heat exchr

Part #48GS660007

$738.22
In Stock
Insulation 48GS500302
#NI

Cabinet parts diagram

Insulation

Part #48GS500302

$103.78
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

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
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How to replace the furnace flame sensor

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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

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

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