LG Electronics LS090HP(AS-H091E1H0), LS180CP(AS-C183DM0), LS240HP(AS-H2435DM0) manual Vacuum pump

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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.

Copyright ©2007 LG Electronics. Inc. All right reserved.	- 48 -
Only for training and service purposes	LGE Internal Use Only
Only for training and service purposes

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Contents SVC MANUALExploded View Table of Contents Safety Precautions InstallationDo not modify or extend the power cord Be sure not to do Be sure to follow the instructionOperation Oxygen deficiency could occur There is risk of explosion or fireKeep level even when installing the product Low refrigerant levels may cause product failureOccupants Salt spray directlySolvents, etc On the product. outdoor unitDisuse Do not drink the water drained from the unitReplace all the batteries in the remote Dimensions Symbols Used in this ManualIndoor Unit Model Btu SeriesModel Btu Series Dimension Mminch 109042.9 30011.8 1787.0 Outdoor Unit 9k, 12k18k, 24k Features IntroductionInstallation Installation PartsInstallation Tools Read carefully, and then follow step by stepInstallation Map Operation Indication LampsAdditional drain pipe Confirm 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 installationConnecting cable Connection Indoor Correct case Incorrect caseConnection Of The Drain Hose Connection Of Piping -OutdoorConnection Of The Cable CapacityInstallation Checking The Drainage Drain pipingDrain hose should point downward for easy drain flow Avoid these situationsForming The Piping Dry nitrogen gas cylinder to this service port Air PurgingAir purging With Vacuum Pump PreparationEvacuation Finishing the jobCharging Btu/hPrepare 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 Thermistor open/shortRemote Control Operations Disassembly To remove the Grille from the ChassisWhen repair, do not damage the Caution label To remove the EvaporatorTo 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 9k, 12k, 18k, 24kModels 9kC/O Models 12kH/P, 12kC/O, H/P Models 18kC/O Models 18kH/P, 24kC/O, H/P Main P.W.B Assembly TOP View Bottom View Components LocationOutdoor9k, 12k TOP View Bottom ViewOutdoor18k, 24k 6871A20681 6871A20680Product Specifications Cooling OnlyCooling & Heating LS090HP LS120HP LS180HP LS240HPExploded View Outdoor Unit 9k, 12k C/O Seriess Outdoor Unit 9k, 12k H/P Seriess Outdoor Unit 18kC/O Seriess Outdoor Unit 24kC/O Seriess W0CZZBOutdoor Unit 18k, 24k H/P Seriess No MFL32351801 December