LG Electronics LSN090CE, LSN090HE, LSN120CE, LSN120HE, LSN180CE, LSN240CE, LSN240HE, LSU090CE, LSU090HE, LSU120CE, LSU180CE, LSU180HE, LSU240CE, TRUE

64 Room Air Conditioner

■Outdoor (18k, 24k)

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)

LG Electronics - page 64

Models: LSN090CE LSN090HE LSN120CE LSN120HE LSN180CE LSN240CE LSN240HE LSU090CE LSU090HE LSU120CE LSU180CE LSU180HE LSU240CE TRUE