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Carrier
Heating & Cooling Combined Unit

Model # 48XT042090300 Official Carrier package unit

Here are the diagrams and repair parts for Official Carrier 48XT042090300 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 143 parts  |
Contactor HN51KB024
#63

Control box/control panel assy diagram

Contactor

Part #HN51KB024

The manufacturer no longer makes this part, and there's no substitute part

Switch,prs HK06WC061
#68

Control box/control panel assy diagram

Switch,prs

Part #HK06WC061

$62.29
In Stock
Pcb Assembly HK38EA008
#74

Outside view 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
Payne Fitting 305843-201
#148

Outside view diagram

Payne fitting

Part #305843-201

$9.03
In Stock
Panel 48GS500235
#20

Front view/rear view diagram

Panel

Part #48GS500235

$293.29
In Stock
Grommet KA56TR056
#88

Blower assy diagram

Grommet

Part #KA56TR056

$25.31
In Stock
Carrier Coil.evap Al/cu 50DT400054
#103

Compressor assy diagram

Carrier coil.evap al/cu

Part #50DT400054

$2751.54
In Stock
Plug Assembly HY07MP311
#53

Control box/control panel assy diagram

Plug assembly

Part #HY07MP311

$72.84
In Stock
Arm HC98ZZ250
#85

Blower assy diagram

Arm

Part #HC98ZZ250

This item is not returnable
$7.17
In Stock
Top, Evap 48GS400244
#13

Outdoor motor/fan blade gap diagram

Top, evap

Part #48GS400244

$427.15
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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How to replace a heating and air conditioning system thermostat

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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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