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LG
Heating & Cooling Combined Unit

Model # LP121HEM-Y8 Official LG package unit

Here are the diagrams and repair parts for Official LG LP121HEM-Y8 package unit, as well as links to manuals and error code tables, if available.

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  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 17 parts  |
Reverse Valve 5220AR3084M
#2202

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Reverse valve

Part #5220AR3084M

$88.36
In Stock
Base Assembly AAN33345805
#1304

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Base assembly

Part #AAN33345805

$103.00
In Stock
Icp Room Air Conditioner Compressor Grommet 4H00982E
Icp room air conditioner compressor grommet

Part #4H00982E

This item is not returnable
$3.51 | 
22% OFF Phone Price : $4.51
In Stock
Tube Assy, E 5211A29905A
#115A

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Tube assy, e

Part #5211A29905A

$35.96
In Stock
Supporter 4800A20002D
#8000

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Supporter

Part #4800A20002D

$10.60
In Stock
Central Air Conditioner Reversing Valve Solenoid Coil 6141A20006C
#1410

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Central air conditioner reversing valve solenoid coil

Part #6141A20006C

$29.98
In Stock
Temperature Defrost Evaporator 5211A21791A
#2116

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Temperature defrost evaporator

Part #5211A21791A

$52.40
In Stock
Room Air Conditioner Front Grille 3530A20040B
#5301

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Room air conditioner front grille

Part #3530A20040B

$22.33
In Stock
Valve 5220A30006A
#2206

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Valve

Part #5220A30006A

$46.60
In Stock
Room Air Conditioner Transformer 6170A20012A
#1704

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Room air conditioner transformer

Part #6170A20012A

$59.22 | 
9% OFF Phone Price : $65.22
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…

Read more

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

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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