LG LAN121CNM Service Manual - Page 2

Air Conditioner Service Manual TABLE OF CONTENTS Safety Precautions...3 Dimensions...9 Symbols Used in this Manual ...9 Indoor Unit...9 Outdoor Unit...10 Introduction ...11 Symbols Used In This Manual...11 Features ...11 Installation ...12 Installation Parts...12 Installation Tools...12 Installation Map ...13 Confirm The Refrigerant...14 Select The Best Location ...15 Piping Length and Elevation...16 How to Mount Installation Plate...17 Drill a Hole in the Wall ...17 Flaring Work...18 Connecting The Piping...19 Connection of The Drain Hose ...24 Connection of Piping -Outdoor...24 Connection of The Cable...25 Checking The Drainage...27 Forming The Piping ...28 Air Purging ...29 Air purging with Vacuum Pump ...29 Charging...31 Test Running ...32 Operation ...33 Function of Controls ...33 Display Function ...37 Self-diagnosis Function...37 Remote Control Operations...38 Disassembly ...39 Indoor Unit...39 Troubleshooting Guide ...42 Refrigeration Cycle Diagram ...42 2-way, 3-way Valve ...43 Cycle Parts...49 Electronic Parts ...50 Schematic Diagram...58 Electric Control Device ...58 Wiring Diagram...60 Components Location ...62 Product Specifications ...65 Exploded View...67 Replacement Parts List ...69 2 Room Air Conditioner