Lg LAN091CNP User Manual

LG Room Air ConditionerSERVICE MANUALLGMODELS: LAN091CNP (ASNC091F2G0)LAU091CNP (ASUC091FUG0)LAN121CNP (ASNC121F2G0)LAU121CNP (ASUC121FUG0)LAN091HNP (

10 Room Air ConditionerDimensionsOutdoor UnitWL2L3L1DHL4L5Gas side(3-way valve)Liquid side(2-way valve)MODEL9k, 12k ModelsDIM unitW mm 770(30.3)H mm 5

Service Manual 11Product SpecificationsProduct Specifications ModelsCooling Capacity kW(Min~Rating~Max) Btu/hHeating Capacity kW(Min~Rating~Max) Btu/

12 Room Air ConditionerInstallationInstallationInstallation PartsInstallation ToolsRead carefully, and then follow step by step.Type "A" scr

Service Manual 13Installation MapInstallation parts you should purchase. NOTICE(Left and rightare identical)More than 28"(70cm)More than 23.6&qu

14 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 15Indoor unit1. Do not have any heat or steam near the unit.2. Select a place where there are no obstacles in frontof the unit.3. Make

16 Room Air ConditionerPiping Length and ElevationOutdoor unitIndoor unitABOutdoor unitIndoor unitABAOil trapOutdoor unitIndoor unitBIf piping length

Service Manual 17InstallationPreparing Work for InstallationOpen panel front1. Pull the upper part of the front panel.2. Lift up the panel.3. To deta

18 Room Air ConditionerInstallationFixing Indoor Unit• Drill the piping hole with a ø50mm hole core drill.Drill the piping hole at either the right or

Service Manual 19Flaring work and connection of pipingFlaring work and connection of pipingFlaring WorkMain cause for gas leakage is due to defect in

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

20 Room Air ConditionerFlaring work and connection of pipingCheck1. Compare the flared work with the figure by.2. If a flared section is defective, cu

Service Manual 21Connecting the piping with the indoor unitand drain hose with drain pipe1. Align the center of the pipings and sufficiently tightent

22 Room Air ConditionerFlaring work and connection of pipingCAUTION: Installation InformationFor right piping. Follow the instruction below.Good case•

Service Manual 23Flaring work and connection of pipingPut a couple drops of refrigerant oil on the face ofthe flare before assembling taking care not

24 Room Air ConditionerConnecting the cable between indoor unit and outdoor unitConnecting the cable between indoor unit and outdoor unitConnecting th

Service Manual 25Connecting the cable between indoor unit and outdoor unitConnection method of the connecting cable(Example)1. Dismount two-caps on t

26 Room Air ConditionerConnecting the cable between indoor unit and outdoor unitAfter the confirmation of the above conditions, prepare the wiring as

Service Manual 27Checking the drainage and forming the pipingsChecking the drainage and forming the pipingsChecking the DrainageTo check the drainage

28 Room Air ConditionerChecking the drainage and forming the pipingsForming the PipingForm the piping by wrapping the connect-ing portion of the indoo

Service Manual 29Air purgingd AIR PURGING Air PurgingAir purgingThe air and moisture remaining in the refrigerant system have undesirable effects as

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

30 Room Air ConditionerAir purgingd Soap water method1. Remove the caps from the 2-way and 3-way valves.2. Remove the service-port cap from the 3-way

Service Manual 31Air purgingd Charging Each outdoor unit is factory charged (nameplate charge) for the evaporator as well as a 7.5m(25ft) line set.A

32 Room Air ConditionerAir purgingd 1. First, Check the side cover assemblyexactly, and fix the power cord in thebottom groove of cover side left.2. A

Service Manual 33Test runningTEST RUNNINGR-410A 95°F(35°C) 8.5~9.5kg/cm2G(120~135 P.S.I.G.)Outside ambientTEMP.RefrigerantThe pressure of the gas sid

34 Room Air ConditionerTest runningIf the actual pressure is higher than shown, the system is most likely over-charged, and charge should beremoved. I

Service Manual 35How to replace picture & photographHow to replace picture & photograph1. Turn off power and then open the upper part of fron

36 Room Air ConditionerOperation Operation Indoor UnitOperation ON/OFF by Remote controllerSensing the Room TemperatureRoom temperature controlStartin

Service Manual 37The function of main controlINTAKE AIR TEMP.SETTING TEMP. +1°F(Compressor ON)SETTING TEMP. -1°F(Compressor OFF)Settingfan speedSetti

38 Room Air Conditioner. Auto Operation (Electronic control mode)• The operation procedure is shown below. (Cooling & Heating Model)❋ If initial m

Service Manual 39Operation Auto Operation for Dehumidification(only Heating Model)• The Setting temperature will be same that of the auto operation

4 Room Air ConditionerSafety Precautions OperationBe cautious when unpacking andinstalling the product. • Sharp edges could cause injury. Beespec

40 Room Air ConditionerOperation 6. Heating Operation Mode(only Heating Model)The unit will operate according to the setting conditions by the remote

Service Manual 417. Cooling or Heating Mode with Sleep Mode Auto Control• When selecting the Cooling( ) or the Heating( ) combined with the Slee

42 Room Air Conditioner8. Forced OperationOperation procedures when the remote control can't be used.The operation will be started if the power b

Service Manual 43Operation Display Function Self-diagnosis FunctionSignal ReceptorReceives the signals from the remote control.(Signal receiving soun

44 Room Air ConditionerOperation ControlsONOFFCANCELSET°C/°FAUTO CLEAN13549101218167281315116Cooling OperationAuto Operation or Auto ChangeoverHealthy

Service Manual 45DisassemblyDisassembly Indoor UnitWARNING: Disconnect the unit frompower supply before making anychecks. Be sure the power switch is

46 Room Air ConditionerDisassembly 3. To remove the Evaporator.- Remove hole tubing holde.- Remove 2 screws securing the evaporator.- Pull the evapora

Service Manual 47Schematic DiagramSchematic DiagramHeat Pump/Cooling Only Series(Indoor Unit)

48 Room Air ConditionerSchematic DiagramHeat Pump Series/ Cooling Only Series (Outdoor Unit)

Service Manual 49Schematic DiagramINDOOR UNIT P.W.B. ASSEMBLY• P/No.: 6871A20999A (PCB ASSEMBLY, MAIN)Top ViewBottom View

Service Manual 5Safety Precautions Use a dedicated outlet for thisappliance. • There is risk of fire or electricalshock.Grasp the plug to remove the

50 Room Air ConditionerSchematic Diagram• P/No.: 6871A20901C (PCB ASSEMBLY, MAIN)OUTDOOR UNIT P.W.B. ASSEMBLYTop ViewBottom View

Service Manual 51Schematic DiagramDISPLAY P.W.B. ASM• P/No.: 6871A20921A (PCB ASSEMBLY)

52 Room Air ConditionerSchematic DiagramWiring Diagram(1) Indoor Unit (Cooling Only Models, & Heating Models)

Service Manual 53Schematic Diagram(2) Outdoor Unit(Cooling Only Models, & Heating Models)

54 Room Air ConditionerTroubleshooting Guide Troubleshooting Guide Refrigeration Cycle DiagramINDOOR UNIT OUTDOOR UNITINDOOR UNIT OUTDOOR UNITHEATEXCH

Service Manual 55Troubleshooting Guide Piping Length and ElevationOutdoor unitIndoor unitABOutdoor unitIndoor unitABAOil trapOutdoor unitIndoor unitB

56 Room Air ConditionerTroubleshooting Guide Pumping Down 3-way Valve• Procedure (1) Confirm that both liquid side and gas sidevalves are set to the o

Service Manual 57Troubleshooting Guide 1) Re-air purging (Re-installation)• Procedure (1) Confirm that both the liquid side valve and thegas side val

58 Room Air ConditionerTroubleshooting Guide 2) Balance refrigerant of the 3-way valve (Gas leakage)• Procedure (1) Confirm that both the liquid side

Service Manual 59Troubleshooting Guide 2. Evacuation (All amount of refrigerant leaked)• Procedure (1) Connect the vacuum pump to the center hoseof c

6 Room Air ConditionerSafety Precautions InstallationDo not open the inlet grill of theproduct during operation. (Donot touch the electrostatic fi

60 Room Air ConditionerTroubleshooting Guide 3. Gas Charging (After Evacuation)• Procedure (1) Connect the charge hose to the chargingcylinder. – Con

Service Manual 61Troubleshooting Guide Additional gas charging(Gas leakage)• When refrigerant is insufficient by leakage, recharge the unit with the

62 Room Air ConditionerTroubleshooting Guide Cycle PartsTrouble analysis 1. Check temperature difference between intake and discharge air and operatin

Service Manual 63Troubleshooting Guide Electronic Parts (9k model)Product does not operate at all.(* Refer to Electronic Control Device drawing and S

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

Service Manual 65Troubleshooting Guide Compressor/Outdoor Fan are unable to drive.Turn on Main PowerOperate "Cooling Mode( )" by settin

66 Room Air ConditionerTroubleshooting Guide When indoor Fan does not operate.Check connecting condition of the CN-MOTOR CON-NECTORDoes the voltage of

Service Manual 67Troubleshooting Guide When Vertical Louver does not operate.• Confirm that the Vertical Louver is normally geared with the shaft ofS

68 Room Air ConditionerTroubleshooting Guide • The operation indicator of Indoor unit blinks five times.• The red indicator of Outdoor unit blinks fiv

Service Manual 69Troubleshooting Guide The phenomena in case of connecting errorINDOOR UNITConnector TypeConditionOpen and connecting errorOpenOpenOp

Service Manual 7Safety Precautions OperationDo not install the product wherethe noise or hot air from the out-door unit could damage theneighborho

70 Room Air ConditionerTroubleshooting Guide OUTDOOR UNITConnector TypeConditionOPEN• PWB pattern is damaged when applying the power.Connecting revers

Service Manual 71Voltage of Connectors according to Indoor Fan Speed1 2 3 41341 2 3 4 5INDOORFANMOTORINDOOR PWB ASSYConnecting wiresbetween Indoorand

72 Room Air ConditionerExploded View Exploded View 35215035211B354210135515131410146811-1135316268711-1152302268711-4135500-2145200146811-2 135500-126

Service Manual 73Exploded View 550140554160567502552113437211435301447910559010546810549610554031430410552203-1552203-2437212435511649950W0CZZ567480-

74 Room Air ConditionerReplacement Parts ListReplacement Parts ListParts List(Indoor)NOTE) *Please ensure GCSC since the replacement parts may be chan

Service Manual 75Replacement Parts ListParts List(Outdoor)NOTE) *Please ensure GCSC since the replacement parts may be changed demending upon the buy

P/No.: 3828A20926CDecember, 2006Printed in Korea

8 Room Air ConditionerAlways insert the filter securely.Clean the filter every two weeksor more often if necessary. • A dirty filter reduces the effic

Service Manual 9DimensionsDimensionsIndoor UnitThis symbol alerts you to the risk of electric shock. This symbol alerts you to hazards that could cau