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30 Room Air Conditioner

Troubleshooting Guide

Is the

Trans input power AC 115V?

(208/230V for LWL1230WAL)

Is the Trans output power

about AC 14V?

Is shorted the Trans. output?

Is output Voltage of IC01D

DC 12V?

Is output Voltage of IC02D

DC 5V?

Is the voltage No.18 of Micom

DC 5V?

Replace AC PCB Ass'y.

Is the

connection between

AC and DC

OK?

Is the reset circuit good?

(The No.14 of

Micom is 5V.)

• Check the Fuse.
• Check the wiring diagram.

• Check the Main
PCB pattern.

• Replace the Trans.

• Replace D02D~D05D.
• Replace IC01D.

• Replace IC02D.

• Replace IC01A, C02A.

• Connect connector
exactly.

• Check the PCB
pattern.

NO

NO

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

YES

YES

NO

YES

Possible Trouble 1

The unit does not operate.

Electrical Parts Troubleshooting Guide

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Содержание LW1000ER

Страница 1: ...PR LW1000ER LW1004ER LWL1210WAL LWL1230WAL WM 1231 LW1000ERY3 LB1000ER LB1200ER LW100CS LW120CS LW1000PRY3 LW1200PRY3 LW1200ERY3 CAUTION website http www lgservice com BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL ONLY FOR AUTHORIZED SERVICE PERSONNEL ...

Страница 2: ...How to Install 8 Suggested Tool Requirements 9 Operation 12 Function of Controls 12 Disassembly 15 Mechanical Parts 15 Air handling Parts 16 Electrical Parts 17 Refrigerating Cycle 19 Schematic Diagram 22 Electronic Control Device 22 Wiring Diagram 24 Components Location 25 Troubleshooting Guide 27 Pipeing System 27 Troubleshooting Guide 28 Electrical Parts Troubleshooting Guide 30 Electrical Part...

Страница 3: ...anual are as shown below WARNING CAUTION This symbol indicates the possibility of death or serious injury This symbol indicates the possibility of injury or damage to property only Be sure not to do Be sure to follow the instruction WARNING Installation Do not use damaged power cord plugs or a loose socket There is risk of fire or electric shock Always use the power plug and socket with the ground...

Страница 4: ...aporator Do not store or use flammable gas or com bustibles near the air conditioner There is risk of fire or failure of product Be sure the installation area does not deterio rate with age If the base collapses the air conditioner could fall with it causing property damage product failure and per sonal injury Sharp edges Gasolin C TIME R POW ER MOD E TEM P FAN SPE ED F1 LOW F2 MED F3 HIGH Dry Tim...

Страница 5: ...aver Cool W mm inch 600 23 5 8 H mm inch 380 14 31 32 D mm inch 567 22 5 16 Model Dimension All Models Outside Dimensions This symbol alerts you to the risk of electric shock This symbol alerts you to hazards that could cause harm to the air conditioner This symbol indicates special notes NOTICE Symbols Used in this Manual ...

Страница 6: ...0 10 000 12 000 1 140 1 110 910 1 220 10 2 5 2 8 2 11 0 10 8 10 8 11 0 9 8 26 7 DB 19 4 WB 35 DB 23 9 WB 540g 19 0 oz 550g 19 4 oz 480 17 0 oz 470 16 6 oz 3 ROW 12 STACKS SLIT FIN TYPE 2ROW10STACKS LG LOUVERTYPE 2ROW12STACKS 2 ROW 17 STACKS L BENDED TYPE 2ROW17STACKS LG LOUVERTYPE 2ROW17STACKS TURBO FAN PROPELLER TYPE FAN WITH SLINGER RING 3 3 6 POLES REMOTE CONTROLLER THERMISTOR VERTICAL LOUVER R...

Страница 7: ... the installation is finished 1 Grounding wire Green or Green and Yellow is provided in the power cord The green wire must be grounded 2 Connect to a single outlet 15A circuit or 20A circuit for Electric Heater Model 3 To avoid vibration or noise make sure the air conditioner is installed securely 4 Avoid placing furniture or draperies in front of the air inlet and outlet In humid weather excess w...

Страница 8: ...MP FAN SPEED F1 LOW F2 MED F3 HIGH Dry Timer Fan Energy Saver Cool 1 WINDOW WIDTH A HEIGHT B 2 GASKET 3 WALL 4 DETAILS 5 1 x 30 ROUND HEAD WOOD SCREWS A B C D E F H I 625mm 392mm 280mm 30mm 0 25mm OVER 420mm 5 10mm 5 5mm 245 8 157 16 111 32 11 16 0 1 OVER 1617 32 3 16 3 8 3 16 3 16 27 to 39 16 min Stool Interior wall 235 8 min Without frame curtain Offset 1 2 to 11 4 Sill Exterior 1 2 3 4 8 11 12 ...

Страница 9: ... to the unit with 4 Type A screws at the both sides Cabinet Installation 1 Open the window Mark a line on center of the win dow stool or desired air conditioner location Carefully place the cabinet on the window stool and align the center mark on the front angle with the center line marked in the window stool 2 Pull the bottom window sash down behind the upper guide until it meets Do not pull the ...

Страница 10: ...ame Guides are broken easily 5 Attach the sill support to the cabinet track hole in relation to the selected position using 2 Type A screws in each support See Figure 5 6 The cabinet should be installed with a very slight tilt about 1 2 downward toward the outside See Figure 6 Adjust the bolt and the nut of Sill Support for balancing the cabinet 7 Attach the cabinet to the window stool by driving ...

Страница 11: ...et See Fig 8 CAUTION For security purpose reinstall screws Type A at the cabinet s sides 11 Cut the Foam Strip to the proper length and insert between the upper and lower window sash See Fig 9 12 Attach the window Locking Bracket with a type C screw See Fig 10 13 Attach the front grille to the cabinet by inserting the tabs on the grille into the tabs on the front of the cab inet Push the grille in...

Страница 12: ...ny other buttons ROOM TEMPERATURE SETTING BUTTON This button can automatically control the temperature of the room The temperature can be set within a range of 60 F to 86 F by 1 F 16 C to 30 C by 1 C Select the lower number for lower temperature of the room OPERATION MODE SELECTION BUTTON Every time you push this button it will shift among COOL ENERGY SAVER FAN and DRY Energy Saver If Energy Save ...

Страница 13: ... unit will not function properly if strong light strikes the sensor window of the air conditioner or if there are obstacles between the Remote Control unit and the air conditioner REMOTE CONTROL DISPLAY DEFROST HEAT COOL INDOOR DESIRED ENERGY SAVER AIR PURYFIER AUTO RESTART FAN FAN DRY Air Purifier Power Temp Sleep Mode Timer Auto Swing Fan Speed AIR PURIFIER 7 1 2 3 4 8 5 TIMER MODE TEMP POWER FA...

Страница 14: ...the button is pressed again Set the fan speed with the remote control You can select the fan speed in three steps high low or medium Each time the button is pressed the fan speed mode is shifted If you press the only Air Purifier button only air purifying operates Then fan speed is low You can select the fan speed in three steps high low or medium Each time the button is pressed the fan speed mode...

Страница 15: ...the grounding screw from the evaporator channel 5 Remove the 1 screw that fasten the control box cover 6 Remove the housing which connects PCB and motor wire in the control box 7 Disconnect the housing that connects Plazma Air Purifier Optional 8 Remove the screw at left cover of filter case and open the cover to remove inner screw Optional 9 Remove the nut that fastens the terminal cover 10 Remov...

Страница 16: ...Pull out the hook of orifice by pushing the tabs and remove it See Figure 19 11 Remove the clamp with hand pliers which secures the turbo fan 12 Remove the turbo fan 13 Remove the 2 screws that fasten the air guide from the base pan 14 Move the air guide backward and pull out from the base pan Move the air giude lower carefully 15 Re install the components by referring to the removal procedure abo...

Страница 17: ...Remove the cabinet Refer to section 2 2 Discharge the refrigerant system using a FreonTM Recovery System If there is no valve to attach the recovery sys tem install one such as a WATCO A 1 before venting the FreonTM Leave the valve in place after servicing the system 3 Remove the overload protector Refer to sec tion 7 4 After purging the unit completely unbraze the suction and discharge tubes at t...

Страница 18: ...nel from the control box See Figure 25 4 Disconnect two leads from the capacitor and relay 5 Pull out the power cord 6 Re install the component by referring to the above removal procedure above Use only one ground marked hole for ground connection 7 If the supply cord of this appliance is damaged it must be replaced by the special cord The special cord means the cord which has the same specificati...

Страница 19: ...net Refer to section 2 2 Remove the 4 screws that fasten the brace Refer to section 4 3 Remove the 5 screws that fasten the condenser and shroud 4 After discharging the refrigerant completely unbraze the interconnecting tube at the con denser connections 5 Remove the condenser 6 Re install the components by referring to notes See Figure 27 13 Evaporator 1 Remove the control box Refer to section 3 ...

Страница 20: ...acuum pump and place it on the charging cylinder See figure 29B Open valve C Discharge the line at the manifold connection 5 The system is now ready for final charging 6 Recharge as follows 1 Refrigeration cycle systems are charged from the High side If the total charge cannot be put in the High side the balance will be put in the suction line through the access valve which you installed as the sy...

Страница 21: ...making a vapor proof seal Leak detector Tubing cutter Hand Tools to remove components Service valve A COMPOUND GAUGE EVAPORATOR LOW PRESSURE SIDE COMPRESSOR CAPILLARY TUBE CONDENSER HIGH PRESSURE SIDE SEE INSETS BELOW MANIFOLD GAUGE B Figure 29A Pulling Vacuum Figure 29B Charging A B EXTERNAL VACUUM PUMP A CHARGING CYLINDER LOW HI B C ...

Страница 22: ...3 6 680pF C01L R01P 20K 50V 3 Digit0 5 10 a f a b Digit1 a 3 9 b 8 c d f d e d c 7 e 4 f 1 g e 6 g g COOL DEFROST DRY HEAT TIMER FAN E SAVER R02G R03G R04G R01G 680 680 680 680 R05G R06G R07G 12V 680 680 680 IC01G 15 14 13 4 3 2 16 1 12 11 10 7 6 5 9 8 ULN2004A 10K 5V 5V R12F R01E 1K 5V C06D BZ01E PKM13EPY 4002 C05D 50V 10V 220 0 01 10 12V 11 12 CN AC DC 51581 12 YEONHO 52044 1245 MOLEX C05D 5V 12...

Страница 23: ... VSS 5V VAref Room TH Pipe TH Option1 Option2 R02G 2 b R03G 3 c R04G 4 d R05G 5 e R06G 6 f R07G 7 g 11 10 9 8 Tx ION MED HI KEY0 KEY1 LED out0 LED out1 LED out2 LED out3 Buzzer 5V 1 3 5 7 9 1 3 5 7 9 1 3 1 3 COMP d e g c a f b d e g c a f b d e g c a f b D01G SW01G TEMP DOWN SW02G D02G ON OFF SW03G D03G TIMER SW04G D04G MODE SW05G D05G TEMP UP SW06G D06G FAN HERM C RY COMP G4A 1A E LG RY HI RY MED...

Страница 24: ...ION REMARKS Q TY PER SET MOTOR COMP CAPACITOR DC PCB ASSEMBLY THERMISTOR AIR FILTER ASSEMBLY AC PCB ASSEMBLY WIRING DIAGRAM 3854AR3563N SWITCH H V ASSEMBLY BK CN MOTOR CN PWR DC12V ZNR01J CN 12V CN HVB RY COMP 3 4 FUSE 250V T2A 115V T2A RY LOW RY MED RY HI CN AC DC POWER TRANS CN AC DC CN TH1 BL RD RD BK BL R S C OLP YL OR YL F C H WH BL Ribbed BK BR Plain GN YL GN GN YL GN BK RD OR BR 1 5 7 6 8 4...

Страница 25: ...3D D04D D05D IC01D HEAT SINK QIC02DT J5 Q01T CN TELE CN TH2 CN PWR CN MOTOR ZNR01J CN 4WAY C01J R01J E03J E04J POWER TRANS FUSE 250V T2A RY COMP E05J E02J J8 E01J J6 J2 J3 RY HI PCB 6870A90068A ASSEMBLY 6871A20167 RY MED RY LOW RY 4WAY J7 J4 J1 D01T C02T Q02T CN CON CN 12V CN AC DC 2 DISPLAY P C B ASSEMBLY LW1000ERY3 LB1200ER WM 1231 LW1200ERY3 WM 1231 LW1200ERY3 LB1000ER ...

Страница 26: ...OWN SW05G MODE SW01G FAN SPEED C05D J04 CN AC DC J05 J01 J02 R01G R02G R03G R04G R05G R06G R07G R08G R09G CN TH1 SW04G TIMER J2ZD02F ZD01F C02A IC01A J08 J14 J15 J16 R10G J07 J08 J09 J10 J11 IC03G OSC01B J24 J20 MODEL LW1200PR LW1000PR LWL1210WAL LWL1230WAL PCB 6870A90067A ASSEMBLY 6871A20186 MODEL LW1200ER LW1000ER MODEL LW120CS LW100CS LW1000PRY3 LW1200PRY3 LW1004ER ...

Страница 27: ...ling cycle MOTOR COMPRESSOR OIL LIQUID REFRIGERANT CAPILLARY TUBE OUTSIDE COOLING AIR FOR REFRIGERANT PASS THROUGH SUCTION LINE COOL LOW PRESSURE VAPOR COOLED AIR COMPLETE LIQUID BOIL OFF POINT LIQUID PRESSURE DROP ROOM AIR HEAT LOAD VAPOR INLET HOT DISCHARGED AIR LIQUID OUTLET HIGH PRESSURE VAPOR LIQUID REFRIGERANT LOW PRESSURE VAPOR ROOM AIR CONITIONER EVAPORATOR COILS CONDENSER COILS CYCLE OF R...

Страница 28: ...fan operation Check gas leakage Repair gas leak Replacement of unit if the unit is beyond repair Satisfactory operation with temperature difference of inlet outlet air 44 50 F 7 10 C Check heat load increase Clean condenser Not on separate circuit Check inside gas pressure Adjusting of refrigerant charged Malfunction of compressor Replacement of compressor Check cold air circulation for smooth flo...

Страница 29: ...gular motor insulation Replacement of fan motor Regular but fails to start Replacement of compressor locking of rotor metal Improper thermostat setting Loose terminal connection Improper wiring Irregular motor resistance Irregular motor insulation Replacement of compressor Motor damaged Drop of power voltage Capacitor check Replacement Compressor only fails to start Defect of compressor capacitor ...

Страница 30: ... Micom DC 5V Replace AC PCB Ass y Is the connection between AC and DC OK Is the reset circuit good The No 14 of Micom is 5V Check the Fuse Check the wiring diagram Check the Main PCB pattern Replace the Trans Replace D02D D05D Replace IC01D Replace IC02D Replace IC01A C02A Connect connector exactly Check the PCB pattern NO NO NO NO NO NO NO YES YES YES YES YES YES YES NO YES Possible Trouble 1 The...

Страница 31: ...m Temp 0 5 C Is the voltage No 10 of IC01M 0V Replace IC01M Select the setting Temp to lower Number Wait 3 Minutes Does the Unit delay for 3 minutes Replace MAIN PCB Ass y Is the voltage N0 9 of IC01M DC 12V Check the RY COMP Check the wiring Diagram NO NO NO YES YES YES YES Is the wire connection of RY COMP OK Check the RY COMP Connect LEAD Wire to RY COMP again NO YES NO ...

Страница 32: ... NO 1 or 2 or 4 of IC01M DC 12V Is the voltage NO 16 or 15 or 13 of IC01M 0V Check the RY Hi or RY Med or RY Lo Check the wiring diagram NO NO YES YES NO NO YES YES Is the mode key pushed once more from cool mode Is the voltage No 3 of CN AC DC of AC PCB Ass y DC 5V Reference to OWNER S MANUAL Set the mode key to Energy Saver mode Check the Energy Saver mode key Check the pattern of AC DC PCB ...

Страница 33: ...DC PCB Ass y Replace IC01G Replace IC03G Q01G Q02G Q03G for Delux Model Connect connector to CN AC DC exactly Does the IC03G Q01G Q02G Q03G for Delux Model operate normally on DC PCB Ass y Is the voltage of Battery over 2 3V Replace Receiver Ass y Is the connection of CN AC DC OK Is the voltage No 10 of CN AC DC on DC PCB Ass y DC 5V Replace the battery Check the PCB pattern Connect connector to C...

Страница 34: ...tage No 40 of Micom DC 5V Replace AC PCB Ass y Is the connection between AC and DC OK Is the reset circuit OK The No 14 of Micom is 5V Check the Fuse Check the wiring diagram Check the AC PCB pattern Replace the Trans Replace D02D D05D Replace IC01D Replace IC02D Replace IC01A C01A Connect connector exactly Check the PCB pattern NO NO NO NO NO NO NO YES YES YES YES YES YES YES NO YES Possible Trou...

Страница 35: ...oom Temp 0 5 C Is the voltage No 10 of IC01M 0V Replace IC01M Select the desired Temp to lower Number Wait 3 Minutes Is the Unit for 3 minutes delay Replace AC PCB Ass y Is the voltage N0 9 of IC01M DC 12V Check the RY COMP Check the wiring Diagram NO NO NO YES YES YES YES Is the wire connection of RY COMP OK Check the RY COMP Connect LEAD Wire to RY COMP again NO YES NO ...

Страница 36: ...r 2 or 4 of IC01M DC 5V Is the voltage NO 16 or 15 or 13 of IC01M 0V Check the RY Hi or RY Med or RY Lo Check the wiring diagram NO NO YES YES Is the voltage of Battery over 2 3V Replace Receiver Ass y Is the connection of CN AC DC OK Is the voltage No 10 of CN AC DC on AC PCB Ass y DC 5V Replace the battery Check the PCB pattern Connect connector to CN AC DC exactly NO NO NO YES YES YES ...

Страница 37: ...t displays abnormally on DC PCB Ass y NO NO NO NO YES YES YES Are IC01G and IC02G OK Is the connection of CN AC DC OK Replace the DC PCB Ass y Replace IC01G IC02G Replace IC03G Connect connector to CN AC DC exactly Does the IC03G operate normally on AC PCB Ass y ...

Страница 38: ...ngs Does the fan blade rotate freely If not replace fan motor Pay attention to any change from high speed to low speed If the speed does not change replace the motor If cracked out of balance or partially missing replace it If cracked out of balance or partially missing replace it Tighten it If knocking sounds continue when running or loose replace the motor If the motor hums or noise appears to b...

Страница 39: ...cleaner do not damage fins or brush Clean the interior base before reassembling If condenser fins are closed over a large area on the coil surface head pressures will increase causing the compressor to overload Straighten the fins or replace the coil Test capacitor Check the terminals If loose repair or replace Check the system for a restriction If restricted clean of replace Close if open Determi...

Страница 40: ...147582 2 559011 349480 552111 352113 352115 352115 2 352115 1 263230 W48602 352390 148000 354212 267110 152312 152302 264110 130410 550140 35211A 554160 567502 135312 135313 554030 DE FR OS T HE AT CO OL IND OO R DE SIR ED EN ER GY SA VE R AIR PU RY FIE R AU TO RE STA RT FA N FA N DR Y 268712 238310 237200 TIME R MO DE TE MP PO WER FA N SP EE D ...

Страница 41: ...CUTCHEON 3831A10020A 3831A10021A R 268714 MAIN PCB ASS Y 6871A20167A 6871A20167C R 263230 THERMISTOR ASS Y 6323A20004D R 264110 POWER CORD ASS Y 6411A20011H R 267110 REMOTE CONTROLLER ASSEMBLY 6711A20052A 6711A20034G R 346811 MOTOR ASS Y 4681A20027W R 349001 VENTILATION DAMPER 4900A20002A R 349480 ORIFICE 4948A10015A R 552111 TUBE ASS Y CAPILLARY 5211AR3332W R 352113 DISCHARGE TUBE 5211AR2930Q R 3...

Страница 42: ...20011H 6411A20011H 6411A20011H R 267110 REMOTE CONTROLLER ASSEMBLY 6711A20052A 6711A20034G 6711A20034G 6711A20034G R 346811 MOTOR ASSEMBLY SINGLE 4681A20069Q 4681A20069Q 4681A20069Q 4681A20069Q R 349001 DAMPER VENTILATION 4900A20002A 4900A20002A 4900A20002A 4900A20002A R 349480 ORIFICE 4948A10015A 4948A10015A 4948A10015A 4948A10015A R 552111 TUBE ASSEMBLY FORMED COND 5211A30275E 5211A30275E 5211AR...

Страница 43: ...R ASSEMBLY 6711A20052D 6711A20034G R 346811 MOTOR ASSEMBLY SINGLE 4681A20027W 4681A20069E 4681A20069J R 349001 DAMPER VENTILATION 4900A20002A R 349480 ORIFICE 4948A10015A R 352113 TUBE ASSEMBLY DISCHARGE SINGLE 5211AR2930Q 5211AR2930V 5211A10074K R 352115 TUBE ASSEMBLY EVAPORATOR IN 5211A20388B 5211A20559N R 35211A TUBE ASSEMBLY SUCTION SINGLE 5211A20228E 5211A20228L 5211A20441F R 352390 AIR GUIDE...

Страница 44: ...004D R 264110 POWER CORD ASSEMBLY 6411A20011H 6411A20011H 6411A20011H R 267110 REMOTE CONTROLLER ASSEMBLY 6711A20034G 6711A20052L 6711A20034G R 346811 MOTOR ASSEMBLY SINGLE 4681A20069J 4681A20069Q 4681A20069J R 349001 DAMPER VENTILATION 4900A20002A 4900A20002A 4900A20002A R 349480 ORIFICE 4948A10015A 4948A10015A 4948A10015A R 552111 TUBE ASSEMBLY CAPILLARY 5211AR3332W 5211AR30275E 5211AR3332W R 35...

Страница 45: ...CB ASSEMBLY DISPLAY 6871A20319A 6871A20319A 6871A20324A 268714 PWB PCB ASSEMBLY MAIN AC 6871A20271A 6871A20271A 6871A20167C 346811 MOTOR ASSEMBLY SINGLE 4681A20069Q 4681A20069J 4681A20069J 349001 DAMPER VENTILATION 4900A20002A 4900A20002A 4900A20002A 349480 ORIFICE 4948A10015A 4948A10015A 4948A10015A 352111 TUBE ASSEMBLY CAPILLARY 5211A30275E 5211AR3332W 5211AR3332W 352113 TUBE ASSEMBLY DISCHARGE ...

Страница 46: ...P No 3828A20140B October 2006 Printed in Korea ...

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