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Air Conditioner
LG Electronics
- page 67
Models:
LSN090CE
LSN090HE
LSN120CE
LSN120HE
LSN180CE
LSN240CE
LSN240HE
LSU090CE
LSU090HE
LSU120CE
LSU180CE
LSU180HE
LSU240CE
TRUE
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83 pages, 5.12 Mb
Service Manual
67
Models: 18k(C/O)
Models: 18k(H/P), 24k(C/O, H/P)
Schematic Diagram
Contents
Main
LG
Room Air Conditioner
SERVICE MANUAL
LG
Air Conditioner Service Manual
TABLE OF CONTENTS
Safety Precautions
Installation
Operation
Page
Installation
Operation
Disuse
Dimensions
Symbols Used in this Manual
NOTICE
Indoor Unit
Page
Service Manual 11
Dimensions
Outdoor Unit
1. 9k, 12k
12 Room Air Conditioner
Dimensions
2. 18k, 24k
Introduction
Symbols Used In This Manual
Features
14 Room Air Conditioner
Installation
Installation
Read carefully, and then follow step by step.
Installation Parts
Installation Tools
Installation Map
NOTICE
16 Room Air Conditioner
THIS PRODUCT CONTAINS R-410A REFRIGERANT
Confirm The Refrigerant
Outdoor unit
Rooftop Installations
Indoor unit
Select The Best Location
Piping Length And Elevation
How To Mount Installation Plate
Drill a Hole In The Wall
Flaring Work
Cut the pipes and the cable.
Burrs removal
Putting nut on
Flaring work
Connecting The Piping
For left rear piping
22 Room Air Conditioner
Wrap the insulation material around the connecting portion.
For right rear piping
Route the indoor tubing and the drain hose to the required piping hole position.
Connecting the pipings to the indoor unit and drain hose to drain pipe.
Service Manual 23
Insert the connecting cable into the indoor unit.
Tape the drain hose and the connecting cable.
Connecting the pipings to the indoor unit and the drain hose to drain pipe.
Indoor unit installation
24 Room Air Conditioner
Reroute the pipings and the drain hose across the back of the chassis.
Page
26 Room Air Conditioner
Finally, tighten the flare nut with torque wrench until the wrench clicks.
Outdoor unit
Connection Of The Drain Hose
Connection Of Piping -Outdoor
Connection Of The Cable
Page
Service Manual 29
Checking The Drainage
Drain piping
The drain hose should point downward for easy drain flow.
Avoid these situations.
Forming The Piping
Air Purging
Air purging With Vacuum Pump
Preparation
Leak test
Evacuation
Finishing the job
Service Manual 33
Charging
Important:
Test Running
34 Room Air Conditioner
Settlement of outdoor unit
Prepare remote control
Evaluation of the performance
Operation
DISPLAY
Cooling Mode Operation
Healthy Dehumidification Mode
36 Room Air Conditioner
Operation
Heating Mode Operation
Defrost Control
Page
Page
Self-diagnosis Function
Service Manual 39
Operation
Display Function
1. Heating Model 2. Cooling Model
Remote Control Operations
Operation Mode
Service Manual 41
Disassembly
Disassembly
Indoor Unit
Page
Service Manual 43
Disassembly
5.To remove the Motor Cover
6.To remove the Cross-Flow Fan
Troubleshooting Guide
(1) Cooling Only Models
(2) Cooling & Heating Models
INDOOR UNIT OUTDOOR UNIT
Refrigeration Cycle Diagram
2-way, 3-way Valve
Pumping Down
Balance Refrigerant of the 3-way Valve
48 Room Air Conditioner
Troubleshooting Guide
Vacuum pump
Evacuation
Procedure
Gas Charging
50 Room Air Conditioner
Troubleshooting Guide
(According to Indoor & Outdoor Temperature)
Additional gas charging
Operating Suction Pressure (For R410A)
Service Manual 51
Troubleshooting Guide Trouble analysis
Cycle Parts
1.Check temperature difference between intake and discharge air and operating current.
52 Room Air Conditioner
Troubleshooting Guide
Electronic Parts (9k model)
Product does not operate at all.
(* Refer to Electronic Control Device drawing and Schematic diagram.)
Service Manual 53
Troubleshooting Guide
Electronic Parts (18k model)
Product does not operate at all.
(* Refer to Electronic Control Device drawing and Schematic diagram.)
The product is not operate with the remote controller.
Compressor/Outdoor Fan are unable to drive.(9k Model)
Compressor/Outdoor Fan are unable to drive.(18k Model)
When indoor Fan does not operate.
When Vertical Louver does not operate.
When a comunication error occurs.
60 Room Air Conditioner
Troubleshooting Guide
The phenomena in case of connecting error
INDOOR UNIT
Service Manual 61
OUTDOOR UNIT
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
72 Room Air Conditioner
Product Specifications
Product Specifications
Cooling Only
* Design and specifications subject to change without prior notice for product improvement.
Service Manual 73
Product Specifications
Cooling & Heating
Exploded View
Indoor Unit
Outdoor Unit: 9k, 12k Btu/h Seriess
Outdoor Unit: 18k(C/O) Seriess
Outdoor Unit: 18k(H/P), 24k Seriess
78 Room Air Conditioner
Replacement Parts List
Parts List (Indoor)
Service Manual 79
Parts List (Indoor)
