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LG
Heating & Cooling Combined Unit

Model # LP121HEM Official LG package unit

Here are the diagrams and repair parts for Official LG LP121HEM 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 Evaporator Fan Blade 5901A20050A
#359011

Package unit diagram

Room air conditioner evaporator fan blade

Part #5901A20050A

$58.19 | 
9% OFF Phone Price : $64.19
In Stock
Room Air Conditioner Blower Wheel Bearing 4280A20004A
#342800

Package unit diagram

Room air conditioner blower wheel bearing

Part #4280A20004A

Replaced by #4280A20004M

?
Manufacturer substitution
This part replaces 4280A20004A. Substitute parts can look different from the original.
This item is not returnable
$5.58 | 
15% OFF Phone Price : $6.58
In Stock
Room Air Conditioner Front Grille Assembly 3531A10149D
#135312

Package unit diagram

Room air conditioner front grille assembly

Part #3531A10149D

Replaced by #3531A10149J

?
Manufacturer substitution
This part replaces 3531A10149D. Substitute parts can look different from the original.
$105.92
In Stock
Thermistor A 6323A20006A
#263230A

Package unit diagram

Thermistor a

Part #6323A20006A

Replaced by #EBG61106833

?
Manufacturer substitution
This part replaces 6323A20006A. Substitute parts can look different from the original.
$14.51
In Stock
Valve 5220A30006A
#552206

Package unit diagram

Valve

Part #5220A30006A

$46.60
In Stock
Knob 4940A30037A
#149400

Package unit diagram

Knob

Part #4940A30037A

This item is not returnable
$4.51
In Stock
Room Air Conditioner Wiring Harness 6631AR2668G
#W6631

Package unit diagram

Room air conditioner wiring harness

Part #6631AR2668G

$35.96
In Stock
Room Air Conditioner Electronic Control Board 6871A10082K
#268711B

Package unit diagram

Room air conditioner electronic control board

Part #6871A10082K

$120.12
In Stock
Base Assembly AAN33345805
#130411

Package unit diagram

Base assembly

Part #AAN33345805

$103.00
In Stock
Pan Asy,drai 3087A20033A
#330871

Package unit diagram

Pan asy,drai

Part #3087A20033A

$23.07
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

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…

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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.…

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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

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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