LG Electronics LA120HPI, LA120HPO, LA090HPO, LA120CPO, LA120CPI

Schematic Diagram

(2) Outdoor Unit(Cooling Only Models, & Heating Models)

Service Manual 53

Image 53

LG Electronics LA120HPI, LA120HPO, LA090HPO, LA120CPO, LA120CPI Outdoor UnitCooling Only Models, & Heating Models

Contents

Room Air Conditioner Table of Contents Installation Safety PrecautionsDo not use damaged power cords, plugs, or a loose socket Install the panel and the cover Operation Do not install the product on a defective installation stand Do not place a heater or other When flammable gas leaks, turnDo not use the product in a tight Sounds, odors, or smoke comes That water is drained away prop Keep level even when installing Do not use the product for spe Product when removingCial purposes, such as preserv Ing foods, works of art, etc. It is a It is not sanitary and could cause DisuseOutlet while the air conditioner is Indoor Unit DimensionsSymbols Used in this Manual 9k, 12k Models Outdoor Unit Models Product Specifications Installation Tools InstallationInstallation Parts Installation Map This Product Contains R-410A Refrigerant Confirm The Refrigerant Select the best Location Rooftop InstallationsIndoor unit Outdoor unit Piping Length and Elevation Oil trap should be installed every 16.4~23feets 5~7 meters Open panel front Preparing Work for InstallationCover pipe and cover side remove Drain hose junction Case of nothing wrong, connect Pipe and the wire. Refer to installationFixing Indoor Unit Flaring Work Flaring work and connection of piping Check Connecting the PipingIndoor Foamed polyethylene or equivalent is recommended Indoor unit tubing Flare nut Pipings Wrap the insulation material around the connecting portion Bad case For right piping. Follow the instruction below Good case Connection of Piping -Outdoor Connecting the Cables How to connect wiring to the terminals Connection method of the connecting cableExample Connecting the cable between indoor unit and outdoor unit Drain piping Checking the DrainageTo check the drainage Forming the Piping Air purging with vacuum pump Air PurgingAir purging Finishing the job Soap water methodEvacuation Charging Panel Front Assembly Test Running Prepare remote controllerSettlement of outdoor unit Evaluation of the performance Pump Down Pump Down Procedure How to replace picture & photograph Functions Operation Chaos Swing Mode Time delay Safety ControlCooling Operation Mode Function of main control Auto Operation for Cooling Auto Operation Electronic control mode Auto Operation for Heatingonly Heating Model Healthy DehumidificationAuto Operation for Dehumidificationonly Heating Model Hot-Start Control Heating Operation Modeonly Heating Model Heating Mode with the Sleep Modeonly Heating Model Cooling or Heating Mode with Sleep Mode Auto ControlCooling Mode with the Sleep Mode Forced Operation Auto restartCooling Heat pump Model Test operation Display Function Signal ReceptorSelf-diagnosis Function Operation Indication Lamps Nd F Button Remote Control OperationsControls To remove the Control Box DisassemblyTo remove the Grille from the Chassis To remove the Motor To remove the Evaporator. Remove hole tubing holdeBefore removing the Turbo Fan Heat Pump/Cooling Only SeriesIndoor Unit Schematic Diagram Heat Pump Series/ Cooling Only Series Outdoor Unit No A20999A PCB ASSEMBLY, Main Top View Bottom View Indoor Unit P.W.B. Assembly No A20901C PCB ASSEMBLY, Main Top View Bottom View Outdoor Unit P.W.B. Assembly Display P.W.B. ASM No A20921A PCB Assembly Wiring Diagram Outdoor UnitCooling Only Models, & Heating Models Refrigeration Cycle Diagram Troubleshooting Guide Piping Length and Elevation Way Valve ProcedurePumping Down Air purging of the charge hose Re-air purging Gas leakage Balance refrigerant of the 3-way valve All amount of refrigerant leaked Evacuation After Evacuation Gas ChargingConnect the charge hose to the charging cylinder Purge the air from the charge hose Method of using equation Method of using graphAccording to Indoor & Outdoor Temperature Additional gas charging Trouble analysis Cycle Parts Product does not operate at all Electronic Parts 9k model Product is not operate with the remote controller Compressor/Outdoor Fan are unable to drive Nector When indoor Fan does not operate When Vertical Louver does not operate When a comunication error occurs Indoor Unit Phenomena in case of connecting error Outdoor Unit RY-COMP-B Voltage of Connectors according to Indoor Fan Speed Indoor Unit Exploded View Outdoor Unit Parts ListIndoor Replacement Parts List Parts ListOutdoor December No A20926C