Lg LSU120HE Manuel d'utilisateur

LG Room Air ConditionerSERVICE MANUALLGMODELS: LSN090CE LSU090CELSN120CE LSU120CELSN180CE LSU180CELSN240CE LSU240CELSN090HE LSU09

10 Room Air ConditionerDHWInstallation plateDimensionsW mm(inch) 1090(42.9) 1090(42.9)H mm(inch) 300(11.8) 300(11.8)D mm(inch) 178(7.0) 178(7.0)ModelD

Service Manual 11DimensionsOutdoor Unit1. 9k, 12kWL2L3L1DHL4L5Gas side(3-way valve)Liquid side(2-way valve)MODEL9k, 12kDIM unitW mm(inch) 770(30.3)H

12 Room Air ConditionerDimensions2. 18k, 24kWL6 L5 L7 L8DL1L2L9L10L3L4HMODEL18k, 24kDIMW mm(inch) 870(34.3)H mm(inch) 655(25.8)D mm(inch) 320(12.6)L1

Service Manual 13Introduction IntroductionThis symbol alerts you to the risk of electric shock. This symbol alerts you to hazards that may cause har

14 Room Air ConditionerInstallationType "A" screw and plastic anchorType "B" screwRemote Control HolderInstallation plateFigure Fi

Service Manual 15InstallationInstallation MapInstallation parts you should purchase. Vertical Air deflectorAir DiscargeForced Operation ButtonOperati

16 Room Air Conditioner1. Check the quality label on the indoor and outdoor unit.2. Make certain that the refrigerant is R-410A.THIS PRODUCT CONTAINS

Service Manual 17Outdoor unit1. If an awning is built over the unit to preventdirect sunlight or rain exposure, make sure thatheat radiation from the

18 Room Air ConditionerPiping Length And Elevation• Capacity is based on standard length and maximum allowance length is on the basis of reliability.•

Service Manual 19The wall you select should be strong and solid enoughto prevent vibration1. Mount the installation plate on the wall with type "

2 Room Air ConditionerAir Conditioner Service ManualTABLE OF CONTENTSSafety Precautions...

20 Room Air ConditionerFlaring WorkCut the pipes and the cable.1. Use the piping kit accessory or the pipes purchasedlocally.2. Measure the distance b

Service Manual 21Indoor1. Prepare the indoor unit's piping and drain hose for installation through the wall.2. Remove the plastic tubing retaine

22 Room Air ConditionerWrap the insulation material around theconnecting portion.• Overlap the connection pipe insulation materialand the indoor unit

Service Manual 23Insert the connecting cable into the indoorunit.• Don't connect the cable to the indoor unit.• Make a small loop with the cable

24 Room Air ConditionerReroute the pipings and the drain hoseacross the back of the chassis.Reroute the pipings and the drain hoseacross the back of t

Service Manual 25Installation Information. For left piping. Follow the instruction below.Correct case• Press on the upper side of clamp and unfold th

26 Room Air ConditionerPut a couple drops of refrigerant oil onthe face of the flare before assemblingtaking care not to add any contaminants.Align th

Service Manual 27Connection Of The Cable1Indoor Unit Outdoor Unit234123456GTobranchcircuitGroundPower supplyaL1*L2Connecting cable(Low voltage)bT

28 Room Air ConditionerAfter the confirmation of the above conditions, prepare the wiring as follows:1) Never fail to have an individual power circuit

Service Manual 29Checking The Drainage• Pour a glass of water on the drain pan.• Ensure the water flows through the drain hose of the indoor unit wit

Service Manual 3Safety Precautions Safety PrecautionsTo prevent injury to the user or other people and property damage, the following instructions m

30 Room Air ConditionerForming The PipingForm the piping by wrapping the connect-ing portion of the indoor unit with insula-tion material and secure i

Service Manual 31Air PurgingAir purging With Vacuum PumpLo HiIndoor unitOutdoor unitManifold valveCharge hoseNitrogen gascylinder(in verticalstanding

32 Room Air ConditionerEvacuation• Connect the charge hose end described in thepreceding steps to the vacuum pump to evacuatethe tubing and indoor uni

Service Manual 33Charging Each outdoor unit is factory charged (nameplate charge) for the evaporator as well as a 7.5m(25ft)line set. Any time a li

34 Room Air ConditionerOutside ambient TEMP. The pressure of the gas side service valve95°F(35°C)8.5~9.5kg/cm2 G(120~135 P.S.I.G.)Settlement of outdoo

Service Manual 35Operation Function of ControlsOperation • DISPLAY1) C/O Model Operation Indicator• ON while in appliance operation, OFF while in app

36 Room Air ConditionerOperation • While in compressor off, the indoor fan repeats low airflow speed and pause.• While the intake air temp is between

Service Manual 37Operation Airflow Speed Selection• The airflow speed of the indoor fan is set to high, medium, low, or chaos (auto) by the input o

38 Room Air ConditionerOperation Forced operation • Operation procedures when the remote control can't be used.• The operation will be started

Service Manual 39Self-diagnosis FunctionOperation Display Function 1. Heating Model 2. Cooling Model• Cooling, Soft Dry, Fan, Heating • Cooling, So

4 Room Air ConditionerSafety Precautions OperationBe cautious when unpackingand installing the product.• Shape edges could cause injury.Be especia

40 Room Air ConditionerRemote Control OperationsOperation The controls will look like the following.1. START/STOP BUTTONOperation starts when this but

Service Manual 41Disassembly DisassemblyIndoor UnitDisconnect the unit from power supply before mak-ing any checks.Be sure the power switch is set to

42 Room Air ConditionerDisassembly2. To remove the Control Box.• Remove securing screws. • Pull the control box out from the chassis carefully.3. To r

Service Manual 43Disassembly• Unhook the tab on the right inside of the chassisat the same time, slightly pull the evaporatortoward you until the tab

44 Room Air ConditionerTroubleshooting Guide Troubleshooting Guide INDOOR UNIT OUTDOOR UNITINDOOR UNIT OUTDOOR UNITHEATEXCHANGE(EVAPORATOR)HEATEXCHANG

Service Manual 45Troubleshooting Guide 2-way, 3-way Valve 2-way Valve (Liquid Side) 3-way Valve (Gas Side)Shaft position Shaft position Service port

46 Room Air ConditionerTroubleshooting Guide • Procedure (1) Confirm that both the 2-way and 3-wayvalves are set to the open position. – Remove the

Service Manual 47Troubleshooting Guide Balance Refrigerant of the 3-way Valve (Gas leakage)• Procedure (1) Confirm that both the 2-way and 3-wayvalv

48 Room Air ConditionerTroubleshooting Guide Evacuation (All amount of refrigerant leaked)• Procedure (1) Connect the vacuum pump to the centerhose of

Service Manual 49Troubleshooting Guide Gas Charging (After Evacuation)• Procedure (1) Connect the charge hose to the chargingcylinder. – Connect the

Service Manual 5Safety Precautions Do not place a heater or otherappliances near the powercable.• There is risk of fire, failure of theproduct, and/

50 Room Air ConditionerTroubleshooting Guide Additional gas charging(Gas leakage)• When refrigerant is insufficient by leakage, recharge the unit with

Service Manual 51Troubleshooting Guide Trouble analysis 1. Check temperature difference between intake and discharge air and operating current. Temp.

52 Room Air ConditionerTroubleshooting Guide Electronic Parts (9k model)Product does not operate at all.(* Refer to Electronic Control Device drawing

Service Manual 53Troubleshooting Guide Electronic Parts (18k model)Product does not operate at all.(* Refer to Electronic Control Device drawing and

54 Room Air ConditionerTroubleshooting Guide The product is not operate with the remote controller.Turn on Main PowerWhile the compressor has been sto

Service Manual 55Troubleshooting Guide Compressor/Outdoor Fan are unable to drive.(9k Model)Turn on Main PowerOperate "Cooling Mode( )"

56 Room Air ConditionerTroubleshooting Guide Compressor/Outdoor Fan are unable to drive.(18k Model)Turn on Main PowerOperate "Cooling Mode( )

Service Manual 57Troubleshooting Guide When indoor Fan does not operate.Check connecting condition of the CN-MOTOR CON-NECTORDoes the voltage of term

58 Room Air ConditionerTroubleshooting Guide When Vertical Louver does not operate.• Confirm that the Vertical Louver is normally geared with the shaf

Service Manual 59Troubleshooting Guide • The operation indicator of Indoor unit blinks five times.• The red indicator of Outdoor unit blinks five tim

6 Room Air ConditionerSafety Precautions Ventilate the product from timeto time when operating it togeth-er with a stove, etc.• There is risk of fir

60 Room Air ConditionerTroubleshooting Guide The phenomena in case of connecting errorINDOOR UNITConnector TypeConditionOpen and connecting errorOpenO

Service Manual 61OUTDOOR UNITConnector TypeConditionOPEN• PWB pattern is damaged when applying the power.Connecting reverselyConnecting reverselyOPEN

62 Room Air ConditionerSchematic DiagramSchematic DiagramElectric Control Device Indoor

Service Manual 63Schematic Diagram Outdoor (9k, 12k)

64 Room Air Conditioner Outdoor (18k, 24k)

Service Manual 65Wiring Diagram Indoor Unit Models: 9k, 12k, 18k, 24k

66 Room Air Conditioner Outdoor Unit Models: 9k(C/O)Models: 12k(H/P), 12k(C/O, H/P)Schematic Diagram

Service Manual 67Models: 18k(C/O)Models: 18k(H/P), 24k(C/O, H/P)Schematic Diagram

68 Room Air ConditionerSchematic DiagramComponents Location IndoorMAIN P.W.B ASSEMBLY• TOP VIEW• BOTTOM VIEW

Service Manual 69 Outdoor(9k, 12k)• TOP VIEW• BOTTOM VIEWSchematic Diagram

Service Manual 7 OperationSafety Precautions Use two or more people to liftand transport the air conditioner• Avoid personal injury.Do not install

70 Room Air ConditionerSchematic Diagram Outdoor(18k, 24k)• TOP VIEW• BOTTOM VIEW

Service Manual 71DISPLAY ASSEMBLYLED_MPCB P/No : 6870A90240FPCB ASSEMBLY P/No : 6871A20681PLASMA88SW_TACTCN-DISP1RECEIVERC01A– 6871A20681– 6871A20680

72 Room Air ConditionerProduct Specifications Product Specifications Power Supply Ø, V, HzCooling Capacity BTU/hInput WRunning Current ACOMP. Locked R

Service Manual 73Product Specifications Cooling & HeatingItems Unit LS090HE LS120HE LS180HE LS240HEPower Supply ø, V, HzCooling Capacity BTU/hHea

74 Room Air ConditionerExploded View 152302152312342800263230359011131410 73301013531213531115990126871214681134681013551635211B3542102499512687142687

Service Manual 75Exploded View Outdoor Unit: 9k, 12k Btu/h Seriess55014055416056750255300055211G55210243721043530144791055901054681054961055403143041

76 Room Air ConditionerOutdoor Unit: 18k(C/O) SeriessExploded View 43551243721055901054681055211G55403155211243721243551144791055211656600043041043530

Service Manual 77Outdoor Unit: 18k(H/P), 24k SeriessExploded View 447910552202561410567502-1552116566000649950435512554031552112137213-1263230-113721

78 Room Air ConditionerReplacement Parts ListReplacement Parts ListParts List (Indoor)NOTE) *Please ensure GCSC since these parts may be changed depen

Service Manual 79Replacement Parts ListParts List (Indoor)NOTE) *Please ensure GCSC since these parts may be changed depending upon the buyer's

8 Room Air ConditionerDimensionsDo not drink the water drainedfrom the unit.• It is not sanitary and could causeserious health issues.Use a firm stool

80 Room Air ConditionerReplacement Parts ListParts List (Outdoor)NOTE) *Please ensure GCSC since these parts may be changed depending upon the buyer&a

Service Manual 81Replacement Parts ListParts List (Outdoor)LOCATIONDESCRIPTIONPART No.REMARKSNo.263230-1 THERMISTOR ASSEMBLY 6323A20002L R263230-2 TH

82 Room Air ConditionerReplacement Parts ListParts List (Outdoor)NOTE) *Please ensure GCSC since these parts may be changed depending upon the buyer&a

P/No.: 3828A20462VPrinted in Korea

Service Manual 9DimensionsDimensionsDHWInstallation plateW mm(inch) 840(33.1) 894(35.2) 894(35.2)H mm(inch) 270(10.6) 295(11.6) 295(11.6)D mm(inch) 1