LG Electronics LSN120HE, LSN090CE, LSU120CE, LSU090HE, TRUE Balance Refrigerant of the 3-way Valve

Page 47

Troubleshooting Guide

Balance Refrigerant of the 3-way Valve

(Gas leakage)

Indoor unit	Liquid side

Outdoor unit

3-Way

valve Open

Gas side

3-Way

valve Open

Lo

OPENCLOSE

• Procedure

(1)Confirm that both the 2-way and 3-way valves are set to the back seat.

(2)Connect the charge set to the 3-way valve’s port.

–Leave the valve on the charge set closed.

–Connect the charge hose to the service port.

(3)Open the valve (Lo side) on the charge set and discharge the refrigerant until the gauge indicates 0 kg/cm2G.

–If there is no air in the refrigerant cycle (the pressure when the air conditioner is not running is higher than 1 kg/cm2G), dis- charge the refrigerant until the gauge indi- cates 0.5 to 1 kg/cm2G. if this is the case, it will not be necessary to apply a evacuatin.

–Discharge the refrigerant gradually; if it is discharged too suddenly, the refrigeration oil will also be discharged.

Service Manual 47

Image 47

Contents Room Air Conditioner Table of Contents Be sure not to do Be sure to follow the instruction Safety PrecautionsInstallation Do not modify or extend the power cordOperation Moisture may condense and wet or damage furnishings Low refrigerant levels may cause product failure Keep level even when installing the productOr more often if necessary Solvents, etcOn the product. outdoor unit Replace all the batteries in the remote DisuseDo not drink the water drained from the unit Indoor Unit DimensionsSymbols Used in this Manual Model Btu Series Dimension Mminch 109042.9 30011.8 1787.0 9k, 12k Outdoor UnitDIM 18k, 24kIntroduction FeaturesInstallation Tools InstallationInstallation Parts Bushing-Sleeve Installation MapThis Product Contains R-410A Refrigerant Confirm The RefrigerantOutdoor unit Rooftop InstallationsSelect The Best Location Indoor unitEvap Moz/ft Piping Length And ElevationDrill a Hole In The Wall How To Mount Installation PlatePutting nut on Flaring WorkCut the pipes and the cable Burrs removalIndoor Connecting The PipingIndoor unit installation Tighten the flare nut with a wrench Wrap the insulation material around the connecting portionIndoor unit installation Insert the connecting cable into the indoor unitConnection Indoor Incorrect case Correct caseConnection Of Piping -Outdoor Connection Of The Drain HoseConnection Of The Cable Wiring DiagramRoom Air Conditioner Drain piping Checking The DrainageSeal small openings around pipings with a gum type sealer Forming The PipingLeak test Air PurgingAir purging With Vacuum Pump PreparationFinishing the job EvacuationCharging Evaluation of the performance Prepare remote controlTest Running Settlement of outdoor unitFunction of Controls Cooling Mode OperationHealthy Dehumidification Mode OperationDefrost Control Heating Mode OperationJet Cool Mode Operation H/P Model Sleep Timer OperationChaos Natural Wind Mode Jet Cool Mode Operation C/O ModelProtection of the evaporator pipe from frosting Forced operationTest operation Auto restartHeating Model Display FunctionSelf-diagnosis Function Operation Mode Remote Control OperationsTo remove the Grille from the Chassis DisassemblyTo remove the Control Box To remove the Motor Cover Cooling & Heating Models Troubleshooting GuideRefrigeration Cycle Diagram Cooling Only ModelsWay Valve Liquid Side Way, 3-way ValvePumping Down ProcedureBalance Refrigerant of the 3-way Valve Vacuum pump After Evacuation Gas ChargingAdditional gas charging Method of using graphMethod of using equation According to Indoor & Outdoor TemperatureTrouble analysis Cycle PartsProduct does not operate at all Electronic Parts 9k modelElectronic Parts 18k model 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 Nector When indoor Fan does not operateWhen Vertical Louver does not operate When a comunication error occurs Indoor Unit Phenomena in case of connecting errorOutdoor Unit Electric Control Device Schematic DiagramOutdoor 9k, 12k Outdoor 18k, 24k Wiring Diagram Models 9kC/O Models 12kH/P, 12kC/O, H/P Models 18kC/O Models 18kH/P, 24kC/O, H/P Components Location Outdoor9k, 12k Outdoor18k, 24k 6871A20680 6871A20681Cooling Only Product SpecificationsLS090HE LS120HE LS180HE LS240HE Cooling & HeatingExploded View Outdoor Unit 9k, 12k Btu/h Seriess 435512 W0CZZ-2 Outdoor Unit 18kH/P, 24k SeriessParts List Indoor Replacement Parts ListLSN180CE LSU120HE Parts List OutdoorReplacement Parts List LSU240HE No A20462V

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