Lg A3UH363FA0 User Manual

LGMulti Type Air ConditionerSERVICE MANUALLGCAUTIONwebsite http://www.lgservice.com • BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS

10 Multi type Air ConditionerSafety Precautions Do not step on or put anytingon the product. (outdoorunits)• There is risk of personal injury andfai

Service Manual 11DimensionsDimensionsIndoor Unit1. Split Type Indoor 2. Art Cool Type Indoor UnitPipe HoleFix HoleHanger HoleHWDInstallation plateDHW

12 Multi type Air ConditionerOutdoor UnitL6L7 L8L9L4HL5WDL1L3L2L10 L11 L11 L11L11L11Gas side3-way valveLiquid side2-way valveDimensionsUE2 36kMODELDIM

Service Manual 13Product SpecificationsProduct Specifications Indoor UnitNominal Cooling Capacity kcal/h(W)Btu/hNominal Heating Capacity kcal/h(W)Btu

14 Multi type Air ConditionerOutdoor Unit - Multiple piping modelsProduct SpecificationsNotes: 1. Capacities are based on the following conditions:Coo

Service Manual 15InstallationInstallationType "A" screw and plastic anchorType "B" screwRemote Control HolderInstallation plateFi

Installation16 Multi type Air ConditionerIndoor unit1. Do not have any heat or steam near the unit.2. Select a place where there are no obstacles in f

Service Manual 17InstallationPiping length and elevationh2h2h1ABCh1h1CAUTION: Capacity is based on standard length and maximum allowance length is on

18 Multi type Air ConditionerInstallationThe wall you select should be strong and solid enough toprevent vibration1. Mount the installation plate on t

Service Manual 19InstallationPreparing work for Installation (Artcool Type Only)Open panel front1. First, push the front panel backward and lift it u

2 Multi type Air ConditionerMulti type Air Conditioner Service ManualTABLE OF CONTENTSModel Number Nomenclature ...

20 Multi type Air ConditionerInstallation Sticking the installation guide map and fixing Indoor unit Drill a hole in the wall• Drill the piping hole

Service Manual 21Flaring Work and Connection of PipingFlaring workMain cause for gas leakage is due to defect in flaring work. Carry out correct flar

22 Multi type Air ConditionerFlaring Work and Connection of PipingCheck1. Compare the flared work with the figure by.2. If a flared section is defecti

Service Manual 23Flaring Work and Connection of Piping4. Indoor unit installationHook the indoor unit onto the upper portion of the installa-tion pla

24 Multi type Air ConditionerFlaring Work and Connection of Piping1. Route the indoor tubing and the drain hose to the requiredpiping hole position.2.

Service Manual 25Flaring Work and Connection of PipingWrap the insulation material around the connecting por-tion.1. Overlap the connection pipe heat

26 Multi type Air ConditionerFlaring Work and Connection of Piping Panel Assembly(Art Cool Type only)1. First, Check the side cover assembly exactly,

Service Manual 27Installation Information. For left piping. Follow the instruction below.Good case• Press on the upper side of clamp and unfold the t

28 Multi type Air ConditionerFlaring Work and Connection of PipingRemove the battery cover from the remote con-troller.• Slide the cover according to

Service Manual 29Flaring Work and Connection of PipingOutdoorAlign the center of the pipings and sufficiently tighten the flarenut by hand.Finally, t

Service Manual 3Model Number NomenclatureModel Number NomenclatureIndoor UnitOutdoor UnitAMN H 3094DA0Serial NumberA3U H 336 F A 0Electrical RatingsM

30 Multi type Air ConditionerConnecting the Cable between Indoor Unit and Outdoor UnitConnect the cable to the indoor unit by connecting the wires to

Service Manual 31Connect the cable to the Outdoor unit.1. Remove the cover control from the unit by loosening thescrew.Connect the wires to the termi

32 Multi type Air Conditioner(1) Remove two-caps on the conduit panel.(2) Make a hole appropriate for the passage of connection cablethrough on cap by

Service Manual 33Connect the cable to the indoor unitCAUTION: Provide a circuit breaker between power source and the unit as shownbelow.AirConditione

34 Multi type Air ConditionerChecking the Drainage, Forming the Pipings and Long Pipe SettingChecking the drainageTo check the drainage.1. Pour a glas

Service Manual 35Checking the Drainage, Forming the Pipings and Long Pipe SettingForming the pipingForm the piping by wrapping the con-necting portio

36 Multi type Air ConditionerAir Purging and EvacuationAir and moisture remaining in the refrigerant system have undesirable effects as indicated belo

Service Manual 37Checking the Drainage, Forming the Pipings and Long Pipe Setting1. Connect the charge hose end described in the precedingsteps to th

38 Multi type Air ConditionerCharging Each outdoor unit is factory charged (nameplate charge) for the evaporator as well as a 7.5m(25ft) line set for

Service Manual 391. Check that all tubing and wiring have been properly con-nected.2. Check that the gas and liquid side service valves arefully open

4 Multi type Air ConditionerModel Number NomenclatureCombination tableA B C Total Unit-A Unit-B Unit-C Total Unit-A Unit-B Unit-C Total (Btu/h.w) (w/w

40 Multi type Air ConditionerOperation 1. MAIN UNIT FUNCTION • DISPLAYOperation Indicator• On while in appliance operation, off while in appliance pau

Service Manual 41Operation 27°C(80.6°F), it operates with Super-Low(while in sleep mode, with the medium airflow speed).• While compressor off, the i

42 Multi type Air ConditionerOperation 2) Fuzzy Operation for Dehumidification• According to the setting temperature selected by Fuzzy rule, when the

Service Manual 43Operation • If the appliance is on pause at the time set by the timer, the pause continues. Off-Timer <=> On-Timer Operation•

44 Multi type Air ConditionerOperation Forced Operation • To operate the appliance by force in case that the remote control is lost, the forced oper

Service Manual 45"Wall Mounted Type is standard"* Functions is dependent on model type.Operation Function of Indoor UnitOn/Off : Lights up

46 Multi type Air ConditionerOperation • Room temperature sensor. (THERMISTOR)• Maintains the room temperature in accordance with the Setting Temp. •

Service Manual 47Operation Function of Outdoor UnitOutdoor UnitTwo Comp algorithmOperating StepLEV ControlOut door Fan Control• Compressor step varie

48 Multi type Air ConditionerOperation Remote Control OperationONOFFCANCELAUTO CLEAN°C/°FSETCooling OperationAuto OperationHealthy Dehumidification Op

Service Manual 49DisassemblyDisassemblyIndoor UnitSplit Type Indoor UnitDisconnect the unit from power supply before mak-ing any checks.Be sure the p

Service Manual 5Safety Precautions Safety PrecautionsTo prevent injury to the user or other people and property damage, the following instructions m

50 Multi type Air ConditionerDisassembly2. To remove the Control Box.• Remove securing screws. • Pull the control box out from the chassis carefully.3

Service Manual 51Disassembly• Unhook the tab on the right inside of the chassisat the same time, slightly pull the evaporatortoward you until the tab

52 Multi type Air ConditionerDisassemblyArt Cool Type Indoor UnitCAUTION: Disconnect the unit frompower supply before making anychecks.Be sure the pow

Service Manual 53Disassembly3) To remove the Evaporator.- Remove 4 screws securing the evaporator.- Pull the evaporator out from the chassis carefull

54 Multi type Air ConditionerSchematic DiagramSchematic DiagramElectronic Control Device1. Indoor Unit1) Split Type

Service Manual 55Schematic Diagram2) Art Cool TypeOUTDOOR6417Digit210LED2LED4LED3LED1DEFROSTON/OFFTIMERSLEEP6(d)Digit1c5de8(c)7(e)bgfa9(b)1(g)3(a)4(f

56 Multi type Air ConditionerSchematic Diagram2. Outdoor Unit

Service Manual 57Schematic Diagram

58 Multi type Air Conditioner1. Room Type Indoor Unit -S4/SE chassis2. Art Cool Type Indoor UnitWiring DiagramSchematic Diagram3. Outdoor Unit1. A3UH3

Service Manual 59Schematic Diagram1. Indoor UnitMAIN P.C.B ASM1) Split TypeComponents Locations• TOP VIEW• BOTTOM VIEWPCB :6870A90409BASSY:6871A20771

6 Multi type Air ConditionerSafety Precautions Do not modify or extend thepower cable.• There is risk of fire or electricshock.Do not install, remov

60 Multi type Air ConditionerSchematic Diagram2) Art Cool Type• TOP VIEW• BOTTOM VIEW

Service Manual 61Schematic Diagram2. Display ASSEMBLY1) Split Type (6871A20680)2) Art Cool Type (6871A20462)BOTTOM VIEWTOP VIEW

62 Multi type Air ConditionerSchematic Diagram3. Outdoor Unit1) Component side

Service Manual 63Schematic Diagram2) Solder side

64 Multi type Air ConditionerField PipingGasField PipingLiquidRefrigerant FlowTh1: Discharge thermistorTh2: Discharge thermistorTh3: Outdoor temperatu

Service Manual 65Troubleshooting Guide Error Indicator• The function is to self-diagnoisis airconditioner and express the troubles identifically if

66 Multi type Air ConditionerTroubleshooting GuideTrouble analysis1. Check temperature difference between intake and discharge air, and operating curr

Service Manual 67Troubleshooting GuideElectronic Parts Troubleshooting Guide❇ Refer to electronic contorol device drawing & schematic diagram.The

68 Multi type Air ConditionerTroubleshooting GuideTurn on main power.While the compressor has been stopped, the compressor does not operate owing to t

Service Manual 69Troubleshooting GuideTurn on the main power.When in air circulation mode, compressor/outdoor fan is stopped.Turn off main power.Chec

Service Manual 7Safety Precautions Do not allow water to run intoelectric parts.• It may cause There is risk of fire,failure of the product, or ele

70 Multi type Air ConditionerTroubleshooting GuideWhen indoor Fan does not operate.Check connecting condition of the CN-MOTOR CON-NECTORDoes the volta

Service Manual 71Troubleshooting GuideWhen the louver does not operate.Trouble 5When Vertical Louver does not operate.• Confirm that the Vertical Lou

72 Multi type Air ConditionerTroubleshooting GuideError Code Trouble ShootingErrorTitle Cause of error Check point & Normal conditioncode01 Indoo

Service Manual 73Troubleshooting GuideErrorTitle Cause of error Check point & Normal conditioncode05 / 53Communication (Indoor ➔ Outdoor)• Commun

74 Multi type Air ConditionerTroubleshooting GuideErrorTitle Cause of error Check point & Normal conditioncode33 D-Pipe Temp. High• Discharge sens

Service Manual 75Troubleshooting GuideErrorTitle Cause of error Check point & Normal conditioncode44 Outdoor air sensor45 Condensor pipe sensor47

76 Multi type Air Conditioner2-way, 3-way Valve2-way, 3-way Valve2-way Valve (Liguid Side) 3-way Valve (Gas Side)Works Shaft position Shaft position S

Service Manual 772-way, 3-way Valve(1) Pumping down• Procedure1. Confirm that both the gas side and liquid sidevalves are set to the open position.-

78 Multi type Air Conditioner2-way, 3-way Valve(2) Evacuation(All amount of refrigerant leaked)• Procedure1. Confirm that both the liguid side valve a

Service Manual 792-way, 3-way Valve(3) Gas Charging(After Evacuation)• Procedure1. Connect the gauge to the charging cylinder. - Connect the charge h

8 Multi type Air ConditionerSafety Precautions Do not open the inlet grill of the productduring operation. (Do not touch the elec-trostatic filter,

80 Multi type Air Conditioner135301152302-2152313152302-1342800263230-2 263230-1359011131410 733010135311135312159901268712146811147582346810135516352

Service Manual 81Exploded View & Replacement Parts ListParts List (S4, SE chassis)PART No.S4 chassis SE chassisAMNH093D4A0(LMN090HE)AMNC093D4A0(L

82 Multi type Air ConditionerExploded View & Replacement Parts List135515267110135500-326871435215035211B263230-2147581359012349600352380146811146

Service Manual 83Exploded View & Replacement Parts ListParts List (SP3 chassis)PART No.AMNH093APM0(LMAN090HNS)AMNC093APM0(LMAN090CNS)AMNH123APM0(

84 Multi type Air ConditionerExploded View & Replacement Parts List546810559010552116552203-1552203-2554160-2554160-156750255403144791043041043551

Service Manual 85Exploded View & Replacement Parts ListParts List (A3UH363FA0(LMU360HE), A3UC363FA0(LMU360CE)) NOTE) *Please ensure GCSC since th

P/No.: 3828A20474CMay, 2006Printed in Korea

Service Manual 9Safety Precautions Do not block the inlet or outletof air flow.• It may cause product failure.Use a soft cloth to clean. Donot use h