LG AS-W126URH1/UBH1/UWH1/UMH1 Bedienungsanleitung

LG RoomAir ConditionerSERVICE MANUALLGMODELS: AS-W096URH0/UBH0/UWH0/UMH0AS-W126URH0/UBH0/UWH0/UMH0/UCH0AS-W096URH1/UBH1/UWH1/UMH1AS-W126URH1/UBH1/UWH1

10 Room Air ConditionerDimensionsDimensionsIndoor UnitThis symbol alerts you to the risk of electric shock. This symbol alerts you to hazards that cou

Service Manual 11Outdoor UnitDimensionsWL2L3L1DHL4L5Gas side(3-way valve)Liquid side(2-way valve)MODEL9k, 12k Btu SeriesDIM unitW mm 770H mm 540D mm

Product Specifications Table-1Model NameItem UnitWMIN kcal/h.(W)Btu/h.WCooling Capacity Type kcal/h.(W)Btu/

InstallationService Manual 13InstallationIndoor unit1. Do not have any heat or steam near the unit.2. Select a place where there are no obstacles in

14 Room Air ConditionerInstallationPiping Length and Elevation9k 3/8" 1/4" 4 or 5 7 15 2012k 1/2" 1/4" 4 or 5 7 15 20Pipe SizeCapa

Service Manual 15Installation• Drill the piping hole with a ø70mm hole core drill.Drill the piping hole at either the right or the left withthe hole

16 Room Air ConditionerInstallationCheck1. Compare the flared work with the figure by.2. If a flared section is defective, cut it off and do flaringwo

Service Manual 17Installation4. Indoor unit installationHook the indoor unit onto the upper portion of theinstallation plate.(Engage the two hooks of

18 Room Air ConditionerInstallation1. Route the indoor tubing and the drain hose to therequired piping hole position.2. Insert the piping, drain hose,

Service Manual 19InstallationWrap the insulation material around the connectingportion.1. Overlap the connection pipe heat insulation and theindoor u

2 Room Air ConditionerAir Conditioner Service ManualTABLE OF CONTENTSLG Model Name...

20 Room Air ConditionerInstallationCAUTION: Installation InformationFor left piping. Follow the instruction below.Good case• Press on the upper side o

Service Manual 21InstallationOutdoorAlign the center of the pipings and sufficiently tightenthe flare nut by hand.Finally, tighten the flare nut with

22 Room Air ConditionerInstallationIndoorConnect the cable to the indoor unit by connecting the wires to the terminals on the control board individual

Service Manual 23InstallationOutdoor1. Remove the control cover from the unit by looseningthe screw.Connect the wires to the terminals on the control

24 Room Air ConditionerInstallationChecking the DrainageTo check the drainage.1. Pour a glass of water on the evaporator.2. Ensure the water flows thr

Service Manual 25InstallationForming the PipingForm the piping by wrapping the connect-ing portion of the indoor unit with insula-tion material and s

26 Room Air ConditionerInstallationAir PurgingAir purgingThe air and moisture remaining in the refrigerant system have undesirable effects as indicate

Service Manual 27InstallationSoap water method1. Remove the caps from the 2-way and 3-way valves.2. Remove the service-port cap from the 3-way valve.

28 Room Air ConditionerInstallation1. Check that all tubing and wiring are properly connected.2. Check that the gas and liquid side service valves are

Service Manual 29InstallationIf the actual pressure is higher than shown, the system is most likely over-charged, and charge should beremoved. If the

Service Manual 3LG Model Name123456789Code Type Code of Model Meaning1,2 Type of Airconditioner A~Z LS: LG Split Type Airconditioner3 Chassis A~Z Na

30 Room Air ConditionerFunctions• Room temperature sensor. (Thermistor)• Pipe temperature sensor. (Thermistor)• Maintain the room temperature in accor

Service Manual 31Functions• If power is on, it will operate to chage capacitor on controller and power relay will operate after about 2~5sec.• If out

32 Room Air ConditionerFunctionsHealthy Dehumidification Operation Mode.( )Remote ControlOperation ON/OFFResetOperation Mode SelectionTemperatur

Operation LED display of indoor unitOperation Service Manual 33 LG Brand/OEM BrandOperationindicatorShape ofdisplaySettingtemp.Standard Too hot Hot

34 Room Air ConditionerOperation • If the indoor pipe temperaure is below 0°C in 7 min. after the compressor operates without pause while incooling cy

Service Manual 35Operation Cooling mode operation• Operating frequency of compressor depend on the difference of the temperature.(= intake air Temp.-

36 Room Air ConditionerOperation Healthy Dehumidification mode operation• When the dehumidification operation is set by the remote controller the inta

Service Manual 37Operation • Operating frequency of compressor depend on the difference of the temperature(= compressor off temp. - intake air temp.)

38 Room Air ConditionerOperation Fuzzy mode operation(Optional)s• When any of operation mode is not selected like the moment of the power on or when t

Service Manual 39Operation 2. Fuzzy operation for Heating• According to the setting temperature selected by Fuzzy rule, the operating frequency of co

4 Room Air Conditioner12 - 345678910Code Type Code of Model Meaning1 Producing Center, A~Z L: Chang-won R22 N: IndiaRefrigerant A: Chang-won R410A Z

40 Room Air ConditionerOperation • While in heating mode or Fuzzy operation, the Jet Cool key cannot be input. When it is input while in theother mod

Service Manual 41Operation 1. Sleep timer operation for cooling cycle• While in cooling mode operation, 30 min. later since the start of the sleep ti

42 Room Air ConditionerOperation Auto restarting operationForced operationTrial Operation• When the power is restarted after a sudden power failure wh

Service Manual 43Operation CT1 control• If the operating current reaches I1, the operating frequency of the compressor decrease.• After decreasing

44 Room Air Conditioner• If the temperature of the heat sink TH. reaches over Toff, the Compressor stop instantly.• It will be limited the compressor

Service Manual 45Operation • While in heating mode operation in order to protect the evaporator pipe of the outdoor unit from freezing,reversed to co

46 Room Air ConditionerOperation • Function used to perform the Self Cleaning to prevent the Unit from Fungus and Bad Odors.• Used after the Shut Down

Service Manual 47Disassembly DisassemblyIndoor UnitWarning :Disconnect the unit from power supply before makingany checks.Be sure the power switch is

48 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 49Disassembly• Unhook the tab on the right inside of the chassisat the same time, slightly pull the evaporatortoward you until the tab

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

50 Room Air ConditionerSchematic DiagramSchematic DiagramIRQ4/P24P50/NWETM4IO/P14IRQ0/P20IRQ1/P21IRQ2/P22BUZZER/P06SBT1/P05SBI1/P04TM0IO/P10TM2IO/P12T

Service Manual 51Schematic DiagramOutdoor(AS-W096_Series, AS-W126_Series)

52 Room Air ConditionerSchematic DiagramWiring DiagramIndoor Unit (AS-W096/126U_0,1 Series3854A20305EFUSEAC250V/T2ACN-THWCN-NOISESSRSH-CAPA.BLBRGN/YLB

Service Manual 53Schematic DiagramOutdoor Unit AS-W096U_0 Series AS-W126U_0 SeriesAS-W096/126U_1 Series3854A20310CWCN-NOISE20A/AC 250VBR3(BK)WCN-NOIS

54 Room Air ConditionerSchematic DiagramComponents LocationINDOORMAIN P.W.B ASSEMBLY (DC PART)• TOP VIEW• BOTTOM VIEWR03HC02LJ14PCB ASSM P/NO:6871A101

Service Manual 55Schematic DiagramDISPLAY ASSEMBLY(AS-W096/126U_0,1 Series)TOP VIEWBOTTOM VIEWRECEIVERPWB ASM: 6871A20463PWB: 6870A90178ALED MODULEC0

56 Room Air ConditionerSchematic DiagramOUTDOOR MAIN P.W.B ASSEMBLY(AS-W096/126U_0 Series)(AS-W096/126U_1 Series)• TOP VIEW • BOTTOM VIEW• TOP VIEW •

Service Manual 57Troubleshooting Guide Troubleshooting Guide INDOOR UNIT OUTDOOR UNITHEATEXCHANGE(EVAPORATOR)HEATEXCHANGE(CONDENSER)COMPRESSORACCUMUL

58 Room Air ConditionerTroubleshooting Guide CAUTION:* Capicity is based on standard length and maximum allowance lengthis the basis of reliability.*

Service Manual 59Troubleshooting Guide 2-way, 3-way Valve 2-way Valve (Liquid Side) 3-way Valve (Gas Side)Shaft position Shaft position Service port

6 Room Air ConditionerSafety Precautions Do not install the product on a defective instal-lation stand.Be sure the installation area does not deteri

60 Room Air ConditionerTroubleshooting Guide Required tools : hexagonal wrench, adjustable wrench,torque wrenches, wrench to hold thejoints, and gas l

Service Manual 61Troubleshooting Guide • Procedure (1) Confirm that both the 2-way and 3-way valvesare set to the open position. – Remove the valve

62 Room Air ConditionerTroubleshooting Guide Re-air Purging (Re-installation)• Procedure (1) Confirm that both the liquid side valve and thegas side v

Service Manual 63Troubleshooting Guide Balance Refrigerant of the 3-way Valve (Gas leakage)• Procedure (1) Confirm that both the 2-way and 3-way val

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

Service Manual 65Troubleshooting Guide Gas Charging (After Evacuation)• Procedure (1) Connect the charge hose to the chargingcylinder. – Connect the

66 Room Air ConditionerTroubleshooting Guide Trouble analysis 1. Check temperature difference between intake and discharge air and operating current.

Service Manual 67Troubleshooting Guide Self-diagnosis functionThe cause of malfunctionIndoor TH. is short or open.Temp. of Heat sink is over 95°C,or

68 Room Air ConditionerTroubleshooting Guide Precaution in Service or CheckEven after stopping the operation of product, it takes some time to disch

Service Manual 69Troubleshooting Guide Electronic Parts❇ Refer to electronic contorol device drawing & schematic diagram.The Product doesn’t oper

Service Manual 7Safety Precautions OperationDo not turn the air-conditioner ON or OFF byplugging or unplugging the power plug.Use a dedicated outl

70 Room Air ConditionerTroubleshooting Guide Turn on main power.While the compressor has been stopped, the compressor does not operate owing to the de

Service Manual 71Troubleshooting Guide Turn on the main power.When in air circulation mode, compressor/outdoor fan is stopped.Turn off main power.Che

72 Room Air ConditionerTroubleshooting Guide When indoor Fan does not operate.Trouble 4Check the SSR high speed operation by remote control.(the Indoo

Service Manual 73Troubleshooting Guide • Confirm that the vertical louver is normally geared with the shaft of Stepping Motor.• If the regular torque

74 Room Air ConditionerTurn off main powerCheck the wire connection of PTC Heater (Refer to Wiring Diagram)• Check the connecting condition of CN-PTC

Service Manual 75Does the Operating LED of indoor unit blinkwhen Operation's ON?Is the Connection between indoor powerrelay Pin ➂ and terminal b

76 Room Air ConditionerDoes the LED01M of outdoor PCB Ass'yblink 6 times?Check the state of connecting cable (3 line)between indoor and outdoor u

Service Manual 77When compressor does not oprate normally. Communication error between Indoor and Outdoor (Error Code ➄)Trouble 8-2Does the operatin

78 Room Air ConditionerWhen compressor does not oprate normally. CT Error (Error Code ➆)Trouble 8-3Does the operating LED in Display PCBAss'y bl

Service Manual 79 The problem of missing the connector (INDOOR MAIN PCB ASSY) The problem of missing the connector (OUTDOOR MAIN PCB ASSY)Connector

8 Room Air ConditionerAlways check for gas (refrigerant) leakage afterinstallation or repair of product.Install the drain hose to ensure that water is

80 Room Air ConditionerExploded View Exploded View 352150354210147581249951733010346810131410146811-1135311237900668713-134280026711035901115983014681

Service Manual 81Exploded View 554031437212435511552202552116552201554160561410552111550140552203-1552203-2430410649950552102437210435301559010546810

82 Room Air ConditionerReplacement Parts ListReplacement Parts ListIndoor UnitNOTE) *Please ensure GCSC since these parts may be changed depending upo

Service Manual 83NOTE) *Please ensure GCSC since these parts may be changed depending upon the buyer's request.(GCSC WEBSITE http://biz.LGservic

P/No.: 3828A20061ZOctober, 2005Printed in Korea

Service Manual 9Use a soft cloth to clean. Do not use harshdetergents, solvents, etc.Do not touch the metal parts of the productwhen removing the air