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LG Electronics A2UC243FA0 (LMU240CE) service manual Multi type Air Conditioner, Disassembly

Models: AMNC093APM0(LMAN090CNS) AMNH123DEA0 (LMN120HE) A2UC243FA0 (LMU240CE) AMNH123APM0(LMAN120HNS) A2UH243FA0(LMU240HE) AMNH093APM0(LMAN090HNS) AMNC123DEA0 (LMN120CE)

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Disassembly

2. To remove the Control Box.
•	Remove securing screws.
•	Pull the control box out from the chassis
	carefully.
	Screw

3.To remove the Discharge Grille.

•Unhook the discharge grille and pull the discharge grille out from the chassis carefully.

4.To remove the Evaporator.

•Remove 3 screws securing the evaporator(at the left 2EA in the Eva Holder, at the right 1EA).

•When repair, do not damage the Caution label.

50Multi type Air Conditioner

Page 50

Image 50

LG Electronics A2UC243FA0 (LMU240CE) service manual Multi type Air Conditioner, Disassembly, To remove the Control Box

Contents

ONLY FOR AUTHORIZED SERVICE PERSONNEL SERVICE MANUALBEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL Multi Type Air ConditionerMulti type Air Conditioner Service Manual 2 Multi type Air ConditionerTABLE OF CONTENTS Installation PartsIndoor Unit Service ManualModel Number Nomenclature Outdoor Unit4 Multi type Air Conditioner SymbolsUsedinthisManualCombination table This symbol alerts you to the risk of electric shockSafety Precautions Safety PrecautionsInstallation Be sure not to do Be sure to follow the instructioninstall the unit by yourself Do not modify or extend the power cableDo not install, remove, or re and installing the productnect the power supply cable Do not plug or unplug the power supply plug during operationDo not place a heater or other appliances near the power cable Do not allow water to run into electric partsnot enter the product When the product is soakedTurn the main power off when cleaning or maintaining the product 8 Multi type Air ConditionerDont sit in the draft OperationalDo not expose the skin directly to cool air for long periods of time of air flowDo not step on or put anyting on the product. outdoor units ly. Clean the filter every twowhen cleaning or maintaining Do not drink the water drained from the productIndoorUnit DimensionsDimensions 1. Split Type IndoorDimensions OutdoorUnit12 Multi type Air Conditioner 24kBtu/hIndoor Unit Product SpecificationsProduct Specifications Service ManualProduct Specifications Outdoor Unit - Multiple piping models14 Multi type Air Conditioner ModelInstallationTools InstallationInstallationParts InstallationIndoor unit Rooftop InstallationsSelect the best location Outdoor unitInstallation Piping length and elevationMulti Piping Type Service ManualInstallation Fixing Installation PlateStandard Type18 Multi type Air Conditioner Remove cover pipe and cover side Preparing work for Installation Artcool Type OnlyOpen panel front Drain hose junctionDrill a hole in the wall INSTALLATIONSticking the installation guide map and fixing Indoor unit 20 Multi type Air ConditionerFlaring Work and Connection of Piping Flaring Work and Connection of PipingFlaringwork Cut the pipes and the cableIndoor Connecting the PipingCheck For right rear pipingWrap the insulation material around the connecting por- tion Service ManualConnecting the piping to the indoor unit and drain hose to drain pipe Flaring Work and Connection of PipingFlaring Work and Connection of Piping For left rear piping24 Multi type Air Conditioner Drain pipeIndoor unit installation Service ManualWrap the insulation material around the connecting por- tion Flaring Work and Connection of PipingPanel Front Connector Panel AssemblyArt Cool Type only26 Multi type Air Conditioner Flaring Work and Connection of PipingBad case Service ManualGood case Flaring Work and Connection of PipingHOW TO MOUNT ONTO A WALL HOW TO INSERT BATTERIES REMOTE CONTROL PREPARATIONOPTIONAL28 Multi type Air Conditioner Flaring Work and Connection of PipingFlaring Work and Connection of Piping OutdoorService Manual Outside diameter30 Multi type Air Conditioner Connecting the Cable between Indoor Unit and Outdoor UnitConnectthe cabletotheIndoorunit Connecting the Cable between Indoor Unit and Outdoor UnitService Manual Connectthe cabletotheOutdoor unitConnecting the Cable between Indoor Unit and Outdoor Unit Every wire must be connected firmlyConnectionmethod ofthe connectingcableExample How to connect wiring to the terminals32 Multi type Air Conditioner Connecting the Cable between Indoor Unit and Outdoor UnitService Manual Connectthecable totheindoorunitConnecting the Cable between Indoor Unit and Outdoor Unit 2. Attach the Grille onto the cabinetTo check the drainage Checking the Drainage, Forming the Pipings and Long Pipe SettingCheckingthedrainage Drain pipingFormingthe piping Checking the Drainage, Forming the Pipings and Long Pipe SettingService Manual Checkingmethod CAUTION Be sure to use a manifold valve for leak testingAir Purging and Evacuation Air Purging and EvacuationFinishing the job Repeat evacuation procedure for each indoor unitEvacuation Checking the Drainage, Forming the Pipings and Long Pipe Setting38 Multi type Air Conditioner ChargingCharging Max length ofSplit, Art Cool Type Test RunningTest Running Service Manual1. MAIN UNIT FUNCTION OperationFunctionofcontrol OperationService Manual Defrost ControlHeatingFuzzy Operation OperationAirflow Speed Selection On-Timer OperationOff-Timer Operation 42 Multi type Air ConditionerChaos Swing Mode Off-Timer = On-Timer OperationSleep Timer Operation Chaos Natural Wind Mode44 Multi type Air Conditioner Forced OperationBuzzer Sounding Operation OperationService Manual FunctionofIndoorUnitSplit Type Indoor Unit Operation ON/OFF by Remote controller Sensing the Room TemperatureOperation ON/OFF by Remote controller Sensing the Room Temperature Art Cool Type Indoor Unit46 Multi type Air Conditioner Room temperature controlService Manual FunctionofOutdoor UnitOutdoor Unit OperationThe Remote Controller transmits the signals to the system RemoteControlOperation48 Multi type Air Conditioner ROOM TEMPERATUREIndoor Unit DisassemblyDisassembly Service ManualWhen repair, do not damage the Caution label 50 Multi type Air ConditionerDisassembly 2. To remove the Control Box5. To remove the Motor Cover Service ManualDisassembly 6. To remove the Cross-Flow FanDisassembly Be sure the power switch is set to “OFF”52 Multi type Air Conditioner Art Cool Type Indoor Unit3 To remove the Evaporator DisassemblyService Manual 4 Before removing the Turbo FanElectronicControlDevice Schematic DiagramSchematic Diagram 1. Indoor UnitService DiagramSchematic ManualSchematic Diagram 2. Outdoor Unit56 Multi type Air Conditioner TMP87CM41FR102 Service ManualSchematic Diagram 2. Art Cool Type Indoor Unit Wiring Diagram3. Outdoor Unit 1. Room Type Indoor Unit -S4/SE chassisBOTTOM VIEW ComponentsLocationsTOP VIEW MAIN P.C.B ASM 1 Split TypeSchematic Diagram 2 Art Cool Type60 Multi type Air Conditioner TOP VIEW BOTTOM VIEWSchematic Diagram 2. Display ASSEMBLY 1 Split Type 6871A206802 Art Cool Type 6871A20462 Service ManualSchematic Diagram 1 Component side62 Multi type Air Conditioner 3. Outdoor UnitService Manual 2 Solder sideSchematic Diagram Troubleshooting Guide Troubleshooting GuideRefrigerationCycleDiagram 1. A2UH243FA0LMU240HESelf-diagnosisFunction Indoor ErrorOutdoor Error Troubleshooting Guide66 Multi type Air Conditioner CycleTroubleshooting GuideTrouble analysis Troubleshooting GuideThe Product doesn’t operate at all ElectronicPartsTroubleshooting GuideTrouble Troubleshooting GuideTroubleshooting Guide Product doesnt operate with the remote controller68 Multi type Air Conditioner TroubleTrouble The Compressor/Outdoor Fan are dont operateTroubleshooting Guide Check Point70 Multi type Air Conditioner Trouble 4 When indoor Fan does not operateWhen indoor Fan does not operate Troubleshooting GuideTroubleshooting Guide Trouble 5 When the louver does not operateWhen Vertical Louver does not operate 72 Multi type Air Conditioner ErrorCodeCheck Point Troubleshooting GuidePower input AC 230V.Outdoor, Indoor Service ManualTroubleshooting Guide The connecting wires are misconnectedError 74 Multi type Air ConditionerTroubleshooting Guide Cause of errorCause of error Service ManualTroubleshooting Guide Check Point76 Multi type Air Conditioner 2-way, 3-way Valve2-way, 3-way Valve 2-way Valve Liguid SideService Manual Procedure1 Pumping down 2-way, 3-way ValveProcedure 2 Evacuation78 Multi type Air Conditioner 7. Mount the valve caps and the service port caps5. Mount the valve stem nuts and the service port nut 3 Gas ChargingProcedure 2-way, 3-way ValveS4, SE chassis Exploded View & Replacement Parts ListExploded View & Replacement Parts List 80 Multi type Air ConditionerService Manual Parts List S4, SE chassisExploded View & Replacement Parts List DESCRIPTIONExploded View & Replacement Parts List SP3 Chassis Art Cool Type82 Multi type Air Conditioner Service Manual Parts List SP3 chassisExploded View & Replacement Parts List COVER ASSEMBLY,TOPINDOORExploded View & Replacement Parts List Outdoor Unit84 Multi type Air Conditioner A2UC243FA0 LMU240CEService Manual Parts List A2UH243FA0LMU240HE, A2UC243FA0 LMU240CEExploded View & Replacement Parts List Location

2. To remove the Control Box.

3.To remove the Discharge Grille.

4.To remove the Evaporator.

•When repair, do not damage the Caution label.

50Multi type Air Conditioner