LG
Heating & Cooling Combined Unit

Model # LP120HEM Official LG package unit

Here are the diagrams and repair parts for Official LG LP120HEM package unit, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • 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”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

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

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 59 parts  |

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.
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.
In Stock
Central Air Conditioner Run Capacitor 3H00660C
#W0CZZA

Package unit diagram

Central air conditioner run capacitor

Part #3H00660C

In Stock
Metal Mesh 3700A20009A
#337000

Package unit diagram

Metal mesh

Part #3700A20009A

In Stock
Room Air Conditioner Transformer 6170A20012A
#261704

Package unit diagram

Room air conditioner transformer

Part #6170A20012A

$59.22
8% OFF Phone Price : $64.22
In Stock
Room Air Conditioner Fan Bracket 4960A20005A
#349600B

Package unit diagram

Room air conditioner fan bracket

Part #4960A20005A

In Stock
Terminal Block 3H00390A
#W6640

Package unit diagram

Terminal block

Part #3H00390A

This item is not returnable
In Stock
Knob 4940A30037A
#149400

Package unit diagram

Knob

Part #4940A30037A

This item is not returnable
In Stock
Damper 5040A30032A
#W50400A

Package unit diagram

Damper

Part #5040A30032A

This item is not returnable
In Stock
Condenser Assembly 5403A20091D
#554030

Package unit diagram

Condenser assembly

Part #5403A20091D

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.

Thermostat problem, clogged air filter, burner failure…

Dirty air filter, clogged condenser coils, low refrigerant charge, faulty compressor…

Thermostat problems, bad compressor/condenser fan capacitor, lack of refrigerant, failed compressor…

Main causes: errant thermostat settings, lack of electrical power, clogged drain line, wiring failure, control failure.…

Main causes: Errant thermostat settings, lack of power, bad interlock switches, lack of exhaust ventilation, wiring fail…

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

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.

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…

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…

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.…

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.

Maintaining your air conditioner

Maintaining your air conditioner

Learn how to maintain your central air conditioner to keep it running smoothly all summer long.…

How to prevent the 2 most common AC failures from ruining your summer

How to prevent the 2 most common AC failures from ruining your summer

Get tips to help keep your central AC running all summer long…

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.…