LG AS-H076PB/D/M/WL1 User Manual

LG RoomAir ConditionerSERVICE MANUALLGCAUTIONwebsite http://www.lgservice.com• BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.•

10 Room Air ConditionerWL2L3L1DHL4L5Gas side(3-way valve)Liquid side(2-way valve)MODELAS-H096PB/D/M/WL1, AS-H126PB/D/M/WL1DIM unitW mm 770H mm 540D mm

Service Manual 11Product SpecificationsProduct Specifications Table-1Model NameItem UnitCooling CapacityBtu/hHeating Capac

12 Room Air ConditionerInstallationInstallationIndoor unit• Do not have any heat or steam near the unit.• Select a place where there are no obstacles

Remove pipe cover and side cover1. Remove two screws(for fixing pipe cover)2. Pull up the side cover of desired connecting direction,and then side cov

14 Room Air ConditionerInstallationFixing the Indoor Unit• Drill the piping hole with a ø50mm hole core drill.Drill the piping hole at either the righ

Service Manual 15InstallationFlaring WorkCutting the pipes and the cable.1. Use the piping kit accessory or the pipes purchasedlocally.2. Measure the

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

Connecting the pipings with the indoor unitand drain hose with drain pipe1. Align the center of the pipings and sufficiently tightenthe flare nut by h

18 Room Air ConditionerInstallationOutdoorAlign the center of the pipings and sufficiently tightenthe flare nut by hand.Finally, tighten the flare nut

Service Manual 19Installation• Connect the cables to the indoor unit by connecting the wires to the terminals on the control boarddividually accordin

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

20 Room Air ConditionerInstallation1. Remove the control cover from the unit by loos-ening the screw.Connect the wires to the terminals on the control

Service Manual 21InstallationChecking the Drainage Forming the Piping1. Checking the drainage.• Pour a glass of water on the evaporator.• Ensure the

22 Room Air ConditionerInstallationCAUTION: To avoid nitrogen entering therefrigerant system in a liquid state, the top ofthe cylinder must be higher

Service Manual 23Installation3. Evacuation• Connect the charge hose end described in the pre-ceding steps to the vacuum pump to evacuate thetubing an

24 Room Air ConditionerInstallation1. First, Check the side cover assembly exactly,and fix the power cord in the bottom groove ofcover side left.2. As

Service Manual 25Test Running1. Check that all tubing and wiring have been properlyconnected.2. Check that the gas and liquid side service valves are

26 Room Air ConditionerOperation DISPLAY1) C/O Model (high quality LCD remote controller supplied)Operation Indicator• On while in appliance operation

Service Manual 27 Healthy Dehumidification Mode• When the dehumidification operation input by the remote controller is received, the intake air temp

28 Room Air ConditionerOperation 26°C ≤ Intake Air Temp => 25°C24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C22°C ≤ Intake Air

Service Manual 29• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to theintake air temp at tha

Service Manual 3LG Model Name12 - 345678910Code Type Code of Model Meaning1 Producing Center, A~Z L: Chang-won R22 N: IndiaRefrigerant A: Chang-won

30 Room Air ConditionerOperation Off-Timer <=> On-Timer Operation• When the set time is reached after the on/off time is input by the remote c

Service Manual 31- Operation Mode/Setting Temp/Selected Airflow Speed- Sleep Timer Mode/Remaining Time of Sleep Timer (unit of hour) Forced Operatio

32 Room Air ConditionerOperation Air Cleaner Operation• When an air cleaner function is selected during Air Conditioner operation- Plasma air cleane

Service Manual 33Operation Display Function 1. Heating Model 2. Cooling Model• Cooling, Soft Dry, Fan, Heating • Cooling, Soft Dry, Fan• Sleep Mode

34 Room Air ConditionerOperation Self-diagnosis Function3sec 3sec 3sec(once)ErrorCode1Error Display LED(Indoor body operation LED)Error contents• Indo

Service Manual 35Remote Control OperationsONOFFCANCELSET13549101214167281315116Cooling OperationAuto Operation or Auto ChangeoverHealthy Dehumidifica

36 Room Air ConditionerDisassembly DisassemblyIndoor UnitWARNING: Disconnect the unit frompower supply before making anychecks. Be sure the power swit

Service Manual 37Disassembly3. To remove the Evaporator.- Remove 4 screws securing the evaporator.- Pull the evaporator out from the chassis carefull

38 Room Air ConditionerSchematic DiagramSchematic DiagramINTS78DL05L,1W(DIP)FANMOTOR65BLWH6577YLIN DOOR32141RDBK4231212R10D4.7K 1%5.1KR11D25VR12DZD02D

Service Manual 39Wiring DiagramSchematic DiagramIndoor Unit Outdoor Unit AS-H076PB/D/M/WL1 AS-H096PB/D/M/WL1AS-H126PB/D/M/WL1

4 Room Air ConditionerSafety PrecautionsTo prevent injury to the user or other people and property damage, the following instructions mustbe followed.

40 Room Air ConditionerSchematic DiagramComponents LocationMAIN P.W.B ASSEMBLY (AC PART)• HEAT PUMP MODELCN-MOTOR2R07DR01DPWB : 6870A90161DCN-O2GND34T

Service Manual 41Schematic DiagramDISPLAY ASSEMBLY– 6871A20462TOP VIEWBOTTOM VIEWSUB P.W.B ASSEMBLY111CN-12V(WH)1CN-D6CN-D71CN-D8CN-D51111CN-CON(WH)C

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

Service Manual 43Troubleshooting Guide 2-way, 3-way Valve 2-way Valve (Liquid Side) 3-way Valve (Gas Side)Shaft position Shaft position Service port

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

Service Manual 45Troubleshooting Guide Balance Refrigerant of the 3-way Valve (Gas leakage)• Procedure (1) Confirm that both the 2-way and 3-way val

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

Service Manual 47Troubleshooting Guide Gas Charging (After Evacuation)• Procedure (1) Connect the charge hose to the chargingcylinder. – Connect the

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

Service Manual 49Troubleshooting Guide Electronic PartsProduct does not operate at all.(* Refer to Electronic Control Device drawing and Schematic di

Service Manual 5Safety Precautions OperationDo not modify or extend thepower cord randomly.Take care so that the powercord may not be pulled durin

50 Room Air ConditionerTroubleshooting Guide The product does not operate with the remote controller.Turn on Main PowerWhile the compressor has been s

Service Manual 51Troubleshooting Guide Compressor/Outdoor Fan are unable to drive.Turn on Main PowerOperate "Cooling Mode( )" by settin

52 Room Air ConditionerTroubleshooting Guide When Indoor Fan does not operate.Fan can't operate for dehumidifying mode.- Change operation for coo

Service Manual 53Troubleshooting Guide When Louvers do not operate.• Confirm that the Louver is normally geared with the shaft of SteppingMotor.• If

54 Room Air ConditionerTroubleshooting Guide When Heating does not operateOperate “Heating Mode( )” by setting the desired temperature of theremot

Service Manual 55Troubleshooting Guide Turn off Main Power• Check the electrical wiring diagram of outdoor side.• Check the abnormal condition for th

56 Room Air ConditionerExploded View Exploded View 359012264110135515267110135500-3349600135500-2135311-1146811147581330870135311-3146811346810135500-

Service Manual 57Exploded View 554031437212435511W0CZZ552202567502552116552201554160561410552111550140552203-1552203-2430410447910649950552102-255210

58 Room Air Conditioner554031437212435511W0CZZ552202567502552116552201554160561410552111550140552203-1552203-24304104479106499505521024372104353015590

Service Manual 59Replacement Parts ListReplacement Parts ListIndoor Unit131410 CHASSIS ASSEMBLY 3141A20004N 3141A20004D 3141A20004N R135303 GRILLE,IN

6 Room Air ConditionerSafety Precautions Keep the flames away.Take the power plug out if neces-sary, holding the head of the plugand do not touch it

60 Room Air ConditionerOutdoor UnitNOTE) *Please ensure GCSC since these parts may be changed depending upon the buyer's request.(GCSC WEBSITE ht

Service Manual 61Memo

62 Room Air ConditionerMemo

P/No.: 3828A20135SFebruary, 2004Printed in Korea

Service Manual 7Safety Precautions InstallationInstall the drain hose toensure that drain can besecurely done.Install the product so that thenoise

8 Room Air ConditionerDimensionsDimensionsPipe HoleFix HoleHanger HoleHWDW mm 570H mm 568D mm 137ModelDimensionINDOOR UNITIndoor UnitThis symbol alert

Service Manual 9Outdoor UnitDimensionsWL2L3L1DHL4L5Gas side(3-way valve)Liquid side(2-way valve)MODELAS-H076PB/D/M/WL1DIM unitW mm 575H mm 525D mm 26