LG Electronics LSN120CE, LSN090CE, LSU120CE, LSU090HE, LSU090CE, LSN180CE, LSN120HE, TRUE Vacuum pump

Page 48

Troubleshooting Guide

Evacuation

(All amount of refrigerant leaked)

Indoor unit	Liquid side
Indoor unit
		Outdoor unit
	3-Way
	valve	Open
	Gas side
	3-Way
	valve	Open
Vacuum pump
	Lo
OPEN	CLOSE

• Procedure

(1)Connect the vacuum pump to the center hose of charge set center hose

(2)Evacuation for approximately one hour.

–Confirm that the gauge needle has moved toward -76 cmHg (vacuum of 4 mmHg or less).

(3)Close the valve (Lo side) on the charge set, turn off the vacuum pump, and con- firm that the gauge needle does not move (approxima-tely 5 minutes after turning off the vacuum pump).

(4)Disconnect the charge hose from the vac- uum pump.

–Vacuum pump oil.

If the vacuum pump oil becomes dirty or depleted, replenish as needed.

Use vacuum pump equipped with check value applied to be prevented from flowing backward.

48Room Air Conditioner

Image 48

Contents Room Air Conditioner Table of Contents Safety Precautions InstallationDo not modify or extend the power cord Be sure not to do Be sure to follow the instructionOperation Moisture may condense and wet or damage furnishings Keep level even when installing the product Low refrigerant levels may cause product failureSolvents, etc On the product. outdoor unitOr more often if necessary Disuse Do not drink the water drained from the unitReplace all the batteries in the remote Dimensions Symbols Used in this ManualIndoor Unit Model Btu Series Dimension Mminch 109042.9 30011.8 1787.0 Outdoor Unit 9k, 12k18k, 24k DIMFeatures IntroductionInstallation Installation PartsInstallation Tools Installation Map Bushing-SleeveConfirm The Refrigerant This Product Contains R-410A RefrigerantRooftop Installations Select The Best LocationIndoor unit Outdoor unitPiping Length And Elevation Evap Moz/ftHow To Mount Installation Plate Drill a Hole In The WallFlaring Work Cut the pipes and the cableBurrs removal Putting nut onConnecting The Piping Indoor unit installationIndoor Wrap the insulation material around the connecting portion Tighten the flare nut with a wrenchInsert the connecting cable into the indoor unit Indoor unit installationConnection Indoor Correct case Incorrect caseConnection Of The Drain Hose Connection Of Piping -OutdoorWiring Diagram Connection Of The CableRoom Air Conditioner Checking The Drainage Drain pipingForming The Piping Seal small openings around pipings with a gum type sealerAir Purging Air purging With Vacuum PumpPreparation Leak testEvacuation Finishing the jobCharging Prepare remote control Test RunningSettlement of outdoor unit Evaluation of the performanceCooling Mode Operation Healthy Dehumidification ModeOperation Function of ControlsHeating Mode Operation Defrost ControlSleep Timer Operation Chaos Natural Wind ModeJet Cool Mode Operation C/O Model Jet Cool Mode Operation H/P ModelForced operation Test operationAuto restart Protection of the evaporator pipe from frostingDisplay Function Self-diagnosis FunctionHeating Model Remote Control Operations Operation ModeDisassembly To remove the Grille from the ChassisTo remove the Control Box To remove the Motor Cover Troubleshooting Guide Refrigeration Cycle DiagramCooling Only Models Cooling & Heating ModelsWay, 3-way Valve Way Valve Liquid SideProcedure Pumping DownBalance Refrigerant of the 3-way Valve Vacuum pump Gas Charging After EvacuationMethod of using graph Method of using equationAccording to Indoor & Outdoor Temperature Additional gas chargingCycle Parts Trouble analysisElectronic Parts 9k model Product does not operate at allElectronic 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 When indoor Fan does not operate NectorWhen Vertical Louver does not operate When a comunication error occurs Phenomena in case of connecting error Indoor UnitOutdoor Unit Schematic Diagram Electric Control DeviceOutdoor 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 6871A20681 6871A20680Product Specifications Cooling OnlyCooling & Heating LS090HE LS120HE LS180HE LS240HEExploded View Outdoor Unit 9k, 12k Btu/h Seriess 435512 Outdoor Unit 18kH/P, 24k Seriess W0CZZ-2Replacement Parts List Parts List IndoorLSN180CE Parts List Outdoor LSU120HEReplacement Parts List LSU240HE No A20462V

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