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LG
Heating & Cooling Combined Unit

Model # LP123HD3A Official LG package unit

Here are the diagrams and repair parts for Official LG LP123HD3A package unit, as well as links to manuals and error code tables, if available.

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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 57 parts  |
Room Air Conditioner Transformer 6170A20012A
#261704

Package unit diagram

Room air conditioner transformer

Part #6170A20012A

$59.22 | 
9% OFF Phone Price : $65.22
In Stock
Room Air Conditioner Condenser Fan Blade 5901A20051A
#559011

Package unit diagram

Room air conditioner condenser fan blade

Part #5901A20051A

$29.98 | 
17% OFF Phone Price : $35.98
In Stock
Room Air Conditioner Control Panel 3720A20710A
#237200

Package unit diagram

Room air conditioner control panel

Part #3720A20710A

$27.47 | 
18% OFF Phone Price : $33.47
In Stock
Tube Evaporator 5210A26718F
#W52106

Package unit diagram

Tube evaporator

Part #5210A26718F

$23.99
In Stock
Room Air Conditioner Wiring Harness 6631AR2668G
#W6631

Package unit diagram

Room air conditioner wiring harness

Part #6631AR2668G

$35.96
In Stock
Icp Room Air Conditioner Compressor Grommet 4H00982E
#550140

Package unit diagram

Icp room air conditioner compressor grommet

Part #4H00982E

This item is not returnable
$3.51 | 
22% OFF Phone Price : $4.51
In Stock
Cover 3550A30111A
#135500B

Package unit diagram

Cover

Part #3550A30111A

This item is not returnable
$4.51
In Stock
Cover 3550A20514A
#135500C

Package unit diagram

Cover

Part #3550A20514A

This item is not returnable
$4.51
In Stock
Tube Assembly 5211A21791F
#352116

Package unit diagram

Tube assembly

Part #5211A21791F

$76.99
In Stock
Supporter 4800A20002D
#148000

Package unit diagram

Supporter

Part #4800A20002D

$10.60
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 furnace burners won’t stay lit?

Dirty flame sensor, failed flame sensor, damaged burner, bad high limit switch…

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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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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…

Read more
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.…

Read more
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

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

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

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