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Carrier
Heating & Cooling Combined Unit

Model # 50DU030300 Official Carrier package unit

Here are the diagrams and repair parts for Official Carrier 50DU030300 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 107 parts  |
Contactor HN51KB024
#NI

Cabinet parts 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 Condenser Fan Motor HC35GE235
#91

Cabinet parts diagram

Central air conditioner condenser fan motor

Part #HC35GE235

$509.50
In Stock
Pcb Assembly HK38EA009
#NI

Cabinet parts diagram

Pcb assembly

Part #HK38EA009

Replaced by #HK38EA012

?
Manufacturer substitution
This part replaces HK38EA009. Substitute parts can look different from the original.
$1166.10 | 
$12.00 OFF Phone Price : $1178.10
In Stock
Pcb Assembly HK38EA008
#NI

Cabinet parts diagram

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
Paint 313974-751
#NI

Cabinet parts diagram

Paint

Part #313974-751

$60.89
In Stock
Switch 331055-706
#NI

Cabinet parts diagram

Switch

Part #331055-706

$76.35 | 
7% OFF Phone Price : $82.35
In Stock
Plug Assembly HK70EZ026
#NI

Cabinet parts diagram

Plug assembly

Part #HK70EZ026

$30.07
In Stock
Cover Assembly 48GS400551
#NI

Cabinet parts diagram

Cover assembly

Part #48GS400551

$104.28
In Stock
Button KA51PC175
#37

Cabinet parts diagram

Button

Part #KA51PC175

This item is not returnable
$5.11
In Stock
Pre.switch HK02ZA407
#NI

Cabinet parts diagram

Pre.switch

Part #HK02ZA407

$29.00
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 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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