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Troubleshooting Guide

- 62 -

Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

5

• Wrong or missing wiring between indoor and outdoor unit cable
• Defect of communication components in indoor pcb assembly
• Defect of communication components in outdoor pcb assembly
• Defect of power supply components in outdoor pcb assembly
• No ground connection in air conditioner unit
(affected by noise in power source)

Communication Error

Wiring connection
Is right ?

Is the voltage of T/Block

,

in outdoor about

AC 220/240V ?

YES

No

Indoor

Outdoor

1(BR) 1(BR)
2(BL) 2(BL)
3(GN/YL) 3(GN/YL)
4(RD) 4(RD)

No

Check power connector
Is not connected to the
T/Block in indoor unit.

Check flow

Is the voltage of GND & DC5V in
Outdoor pcb about DC 5V ?

YES

No

Check FUSE, NF01/02J, PTC,
Power Module, BD-01S in
Outdoor pcb assembly

Communication circuit of indoor
& outdoor pcb Is right ?

YES

No

Check IC01K, IC02K,D01K~D03K,
ZD01K~ZD03K, R01K~R10K,
C01K~C04K

Ground connection is installed ?
(power outlet or outdoor chassis)

YES

No

Install ground connection from outdoor
unit. (In case power outlet has no earth
port)

Earth port

Description

Cause of error

Error code

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Summary of Contents for AS-W0964DH0

Page 1: ...GH0 AS W0964DH1 AS W1264DH0 GH0 AS W1865DH0 AS W1224DH0 AS W1424DH0 AS W1825DH0 AS W096E1G0 AS W126E1G0 CAUTION Before Servicing the unit read the safety precautions in General SVC manual Only for authorized service personnel Internal Use Only http biz lgservice com ...

Page 2: ...LE OF CONTENTS LG Model Name 3 Safety Precautions 5 Dimensions 10 Installation 14 Connecting the cable between indoor unit and outdoor unit 24 Checking the drainage and forming the pipings 26 Air purging 27 Test running 29 Functions 30 Operation 33 Disassembly 44 Troubleshooting Guide 47 Schematic Diagram 67 Product Specifications 76 Exploded View 80 ...

Page 3: ...20V 50Hz D 440 460 60Hz 3Phase 6 220 240V 50Hz E 265V 60Hz 7 110V 50 60Hz F 200V 50 60Hz 8 380 415V 50Hz 9 380 415V 60Hz 7 Chassis A Z Name of Chassis of Unit Ex 4 S4 Chassis 8 Look A Z Look Color Artcool Model 9 Function A Z 10 Serial No 0 9 LG Model De ARTCOOL COLOR velopment Serial No Basic A Basic 4Way B Plasma Filter C Plasma Filter 4 Way D Tele LCD E Tele LCD Nano plasma 4Way F Nano Plasma F...

Page 4: ...D G 1 K L G M N D P Division Panel Type Deluxe Grille Type Panel Type Deluxe Fighting Look LG1 LG2 SEMI PANEL OEM1 OEM2 Panel Type Deluxe LG3 50 60Hz 8 380 415V 50Hz 9 380 415V 60Hz 7 Chassis A Z Name of Chassis of Unit Ex 4 S4 Chassis 8 Look A Z Look Color Artcool Model 9 Function A Z 10 Serial No 0 9 LG Model De ARTCOOL COLOR velopment Serial No R Mirror W White B Blue D Wood M Metal C Cherry S4...

Page 5: ...mbols used in this manual are as shown below This symbol indicates the possibility of death or serious injury This symbol indicates the possibility of injury or damage to properties only Be sure not to do Be sure to follow the instruction Do not use damaged power cords plugs or a loose socket Always use the power plug and socket with the ground terminal There is risk of fire of electric shock Ther...

Page 6: ...t failure and personal injury Sharp edges could cause injury Be especially care ful of the case edges and the fins on the condenser and evaporator There is risk of fire electric shock explosion or injury Be cautious when unpacking and installing the product For installation always contact the dealer or an Authorized service center For re installation of the installed product always contact a deale...

Page 7: ...k There is risk of fire or electrical shock Grasp the plug to remove the cord from the outlet Do not touch it with wet hands Do not place a heater or other appliances near the power cable There is risk of fire or electrical shock There is risk of fire and electric shock Do not allow water to run into electrical parts Do not store or use flammable gas or com bustibles near the air conditioner There...

Page 8: ...vels may cause failure of product A bad connection may cause water leakage Keep level even when installing the product Use two or more people to lift and transport the air conditioner To avoid vibration or water leakage Avoid personal injury Installation 90 Unplug the unit if strange sounds odors or smoke comes from it Be cautious that water could not enter the product There is risk of electric sh...

Page 9: ...They are very sharp There is risk of fire electric shock or damage to the plastic parts of the product There is risk of personal injury Do not step on or put anyting on the product outdoor units Do not insert hands or other objects through the air inlet or outlet while the air conditioner is plugged in There is risk of personal injury and failure of product There are sharp and moving parts that co...

Page 10: ...urposes LGE Internal Use Only Dimensions Dimensions W mm 840 895 H mm 270 282 D mm 153 165 Model Dimension 7k 9k 12k 14k Btu Series Indoor Unit 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 ...

Page 11: ...ectronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Dimensions D H W Installation plate Installation plate Type 1 Type 2 W mm 1090 H mm 300 D mm 178 Model Dimension 18k 24k Btu Series ...

Page 12: ...valve MODEL DIM unit W mm 770 H mm 540 D mm 245 L1 mm 285 L2 mm 65 L3 mm 518 L4 mm 10 L5 mm 100 Dimensions 12 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Outdoor Unit 7k 9k 12k 14k Btu Series ...

Page 13: ...training and service purposes LGE Internal Use Only W L7 L6 L8 L9 D L1 L2 L3 L10 L11 L4 L5 H Gas side Liquid side MODEL DIM W mm 870 H mm 655 D mm 320 L1 mm 370 L2 mm 340 L3 mm 25 L4 mm 630 L5 mm 25 L6 mm 546 L7 mm 162 L8 mm 162 L9 mm 54 L10 mm 74 5 L11 mm 79 18k 24k Btu Series ...

Page 14: ...damage to the wall Outdoor unit 1 If an awning is built over the unit to prevent direct sunlight or rain exposure make sure that heat radia tion from the condenser is not restricted 2 Ensure that the space around the back and sides is more than 30cm The front of the unit should have more than 70cm of space 3 Do not place animals and plants in the path of the warm air 4 Take the weight of the air c...

Page 15: ...30 20 18k 24k 26k 5 8 1 4 4 or 7 5 15 30 20 5 8 3 8 4 or 7 5 15 30 30 Pipe Size Capacity Btu h GAS LIQUID Max Length A m Additional Refrigerant g m Max Elevation B m Standard Length m Outdoor unit Indoor unit A B Outdoor unit Indoor unit A B A Oil trap Outdoor unit Indoor unit B If the piping length is more 10 Meters and the outdoor Capacity is based on standard length and maximum allowance length...

Page 16: ...he wiring to power outlets is through the walls typically Drilling the hole through the wall for piping connections must be done safely Fixing Installation Plate Installation Plate Type A screw Chassis Hook Installation plate Left rear piping Right rear piping Ø70mm Ø70mm D B A C Drill the piping hole with a ø70mm hole core drill Drill the piping hole at either the right or the left with the hole ...

Page 17: ... burrs from the cut cross section of pipe tube 2 Put the end of the copper tube pipe in a downward direction as you remove burrs in order to avoid dropping burrs into the tubing Putting nut on Remove flare nuts attached to indoor and outdoor unit then put them on pipe tube having completed burr removal not possible to put them on after flaring work Flaring work 1 Firmly hold copper pipe in a die i...

Page 18: ...ing cable into the indoor unit from the outdoor unit through the piping hole Do not connect the cable to the indoor unit Make a small loop with the cable for easy connec tion later 3 Tape the tubing drain hose and the connecting cable Be sure that the drain hose is located at the lowest side of the bundle Locating at the uper side can cause drain pan to overflow inside the unit If the drain hose i...

Page 19: ...e indoor unit install the drain pipe Wrap the insulation material around the connecting portion 1 Overlap the connection pipe insulation material and the indoor unit pipe insulation material Bind them together with vinyl tape so that there may be no gap 2 Wrap the area which accommodates the rear piping housing section with vinyl tape 3 Bundle the piping and drain hose together by wrap ping them w...

Page 20: ...te Insert the spacer etc between the indoor unit and the installation plate and separate the bottom of the indoor unit from the wall Connecting the piping to the indoor unit and the drain hose to drain pipe 1 Align the center of the pipes and sufficiently tighten the flare nut by hand 2 Tighten the flare nut with a wrench 3 When extending the drain hose at the indoor unit install the drain pipe Fo...

Page 21: ...th tape over the range within which they fit into the rear piping housing section Reroute the pipings and the drain hose across the back of the chassis Indoor unit installation 1 Remove the spacer 2 Ensure that the hooks are properly seated on the installation plate by moving it left and right 3 Press the lower left and right sides of the unit against the installation plate until the hooks engage ...

Page 22: ...vice purposes LGE Internal Use Only Installation Installation Information For left piping Follow the instruction below Good case Press on the upper side of clamp and unfold the tubing to downward slowly Bad case Following bending type from right to left may cause damage to the tubing ...

Page 23: ...ally tighten the flare nut with torque wrench until the wrench clicks When tightening the flare nut with torque wrench ensure the direction for tightening follows the arrow on the wrench mm inch kgf m Ø6 35mm 1 4 1 8 2 5 Ø9 52mm 3 8 3 4 4 2 Ø12 7mm 1 2 5 5 6 6 Ø15 88mm 5 8 6 3 8 2 Ø19 05mm 3 4 9 9 12 1 Outside diameter Torque Outdoor unit Liquid side piping Smaller diameter Gas side piping Bigger ...

Page 24: ...t they may not be pulled out easily Connect the wires according to color codes referring to the wiring diagram If a power plug is not used provide a circuit breaker between power source and the unit as shown by The power cord connected to the A unit should be selected according to the following specifications Type B approved by HAR or SAA The power connecting cable connecting the indoor and outdoo...

Page 25: ...tions to which the unit is subjected during the course of transportation Check them and make sure that they are all tightly fastened If they are loose it could cause burn out of the wires 3 Specification of power source 4 Confirm that electrical capacity is sufficient 5 See to that the starting voltage is maintained at more than 90 percent of the rated voltage marked on the name plate 6 Confirm th...

Page 26: ...ont panel from the indoor unit Set the air direction louvers up and down to the position horizontally by hand Remove the securing screws that retain the front panel Pull the lower left and right sides of the grille toward you and lift it off In cases where the Outdoor unit is installed above the Indoor unit perform the following Tape the piping and connecting cable from down to up Secure the taped...

Page 27: ...ation Check that each tube both liquid and gas side tubes between the indoor and outdoor units have been properly connected and all wiring for the test run has been complet ed Remove the service valve caps from both the gas and the liquid side on the outdoor unit Note that both the liquid and the gas side service valves on the outdoor unit are kept closed at this stage Leak test Connect the manifo...

Page 28: ...as side service port and fasten the flare nut securely with an adjustable wrench This process is very important to prevent leakage from the system Replace the valve caps at both gas and liquid side service valves and fasten them tight This completes air purging with a vacuum pump The air conditioner is now ready to test run 1 Remove the caps from the 2 way and 3 way valves 2 Remove the service por...

Page 29: ...eat 4 times Evaluation of the performance Operate unit for 15 20 minutes then check the system refrigerant charge 1 Measure the pressure of the gas side service valve 2 Measure the temperature of the intake and discharge of air 3 Ensure the difference between the intake temperature and the discharge is more than 8 C 46 F Cooling or Heating 4 For reference the gas side pressure of optimum condition...

Page 30: ...operation Lights up in Timer Mode or Sleep Mode Lights up in Preheat Mode or Defrost Mode Lights up in Plasma Air Clean Mode Lights up in during Energy Saving Cooling Mode Operation Optional Indoor Unit Operation ON OFF by Remote controller Sensing the Room Temperature Room temperature control Starting the Current Control Time Delay Safety Control Indoor Fan Speed Control Operation indication Lamp...

Page 31: ...ling low Heating speed The unit will be stopped after 1 2 3 4 5 6 7 hours The fan is switched to intermittent or irregular operation The fan speed is automatically switched from high to low speed The louver can be set at the desired position or swing up and down automatically Sleep Mode Auto Control Natural Air Control by CHAOS Logic Airflow Direction Control The function will be operated while in...

Page 32: ...eration mode except defrosting operation High speed Although fan motor speed is middle it will change high speed in case of below AC193V over 40 C Cooling Mode of outdoor temp below 4 C Heating Mode of outdoor temp and over fc fh of comp Freq Middle speed Nomal mode Low speed Although fan motor speed is middle it will change Low speed in case of over AC 270V over 21 C Heating Mode of outdoor temp ...

Page 33: ... ON while in appliance operation OFF while in appliance pause Flashing while in disconnection or short in Thermistor 3 sec off 0 5 sec on Timer Indicator ON while in timer mode on off OFF when timer mode is completed or canceled Defrost Indicator OFF except when hot start during heating mode operation or while in defrost control If the indoor pipe temperaure is below 0 C in 7 min after the compres...

Page 34: ...p 2 0 5 0 C Step 1 The operating freq step of comp The targeting operating freq of comp each model Model AS W0964DH0 DH1 GH0 35 39 43 47 52 57 62 AS W1264DH0 GH0 20 35 47 56 63 70 78 AS W1865DH0 16 32 58 64 70 75 85 AS W1224DH0 20 35 47 54 65 70 74 AS W1424DH0 20 35 47 54 72 74 78 AS W1825DH0 16 32 53 62 72 75 85 AS W096E1G0 25 35 40 52 56 74 82 AS W126E1G0 25 35 40 52 66 74 82 Comp Operating freq...

Page 35: ...p 6 Step 7 The operating freq step of comp The targeting operating freq of comp each model Heating mode operation Model AS W0964DH0 DH1 GH0 35 44 53 62 69 74 80 AS W1264DH0 GH0 20 38 53 63 72 79 86 AS W1865DH0 16 38 47 65 79 87 96 AS W1224DH0 20 35 53 63 70 79 86 AS W1424DH0 20 35 53 63 77 79 86 AS W1825DH0 16 38 47 62 79 87 90 AS W096E1G0 35 40 48 56 65 90 94 AS W126E1G0 35 40 48 56 80 90 94 Comp...

Page 36: ...ty When the Jet Heat key is input the upper lower vane is reset to those of the initial Jet heating mode and then operated in order that the air outflow could reach under flow 1 New Chaos swing mode By the Chaos swing key input the upper lower vane automatically operates with the Chaos swing or it is fixed to the desired direction Mode2 Mode3 Mode4 Mode5 Mode6 Mode7 Mode8 Mode9 OPEN CLOSED 8 Cooli...

Page 37: ...60 min later since the start of the sleep timer the setting temperature decrease by 1 C After another 60min elapse it decreases by 1 C again Setting temp C 1 0 C up 1 0 C up Cooling ON temp Setting temp 0 5 C Cooling OFF temp Setting temp 0 5 C 0 5 1 Sleep time hr Setting temp C Heating ON temp Setting temp 2 C Heating OFF temp Setting temp 4 C 1 2 Sleep time hr 1 0 C down 1 0 C down When the slee...

Page 38: ...ppliance by force in case that the remote control is lost the forced operation selection switch is on the main unit of the appliance to operate the appliance in the standard conditions The operation condition is set according to the outdoor temp and intake air temperature as follows The unit select before operating mode in 3 hours Press the Tact Switch for compulsory operation of the main body for...

Page 39: ...ase dectection of dc paeak current Control table DC Peak Current Error by a fault signal of IPM If the operating current of IPM reaches 35A 3A the compressor stop instantly If DC PEAK occurs 5 times within 1 hour the appliance turns off and display ERROR CODE 6 DC Peak Current Error by the compressor lock If the DC LINK voltage below DC 140V occurs 5 times within 1 hour while the compressor is ope...

Page 40: ...dome TH Refer to below Fig Temperature range by COMP SPEC varies by 10 C Portection from overheating of power module Portection from overheating of compressor T off C T2 C Heat Sink Temp T1 C T on C COMP Freq Free OFF Free Fc 1 Fc 1 Fc 2 Fc 2 T T off T on T1 T on T T2 T on 2 T D Pipe Temp COMP Freq Free Free Fh min OFF Fc 1 Fc 1 Fc 2 Fc 2 T T off T2 2 T1 T2 2 T T3 T2 T T off C T2 C T3 C T1 C 13 C ...

Page 41: ...pe of the outdoor unit Defrosting control is available 50 minutes later since heating cycle started and the pipe temperature of out door unit reaches below 6 C Setting Freq Operating Freq of Comp 4 Way EEV Open step Outdoor FAN Indoor FAN Pre Heat LED Deice STEP Fh min Minimum Time of Heating Main Deice time Fh min Fh min ON OFF Setting Speed ON Hot Start OFF Hot Starting ON OFF OFF 0 1 2 3 4 5 6 ...

Page 42: ... 120 Sec Fan The air conditioner changes the operation mode automatically to keep indoor tempera ture When room temperature vary over 2 C with respect to setting temperature air condition er keeps the room temperature in 2 C with respect to setting temperature by auto change mode If outdoor temperature drops below certain temperature liquid back is prevented by reducing fan speed It can prevent fr...

Page 43: ...e of starting and stopping operation 8 TIME SETTING BUTTONS Used to adjust the time 9 TIMER SET CANCEL BUTTON Used to set the timer when the desired time is obtained and to cancel the Timer operation 10 SLEEP MODE AUTO BUTTON Used to set Sleep Mode Auto operation 11 ENERGY SAVING COOLING MODE BUTTON OPTIONAL Used to set Energy Save in cooling mode 12 ROOM TEMPERATURE CHECKING BUTTON Used to check ...

Page 44: ...ower switch is set to OFF To remove the Grille from the Chassis Set the up and down air discharge louver to open position horizontally by finger pressure Remove the securing screws To remove the Grille pull the lower left and right side of the grille toward you slightly tilted and lift it straight upward 1 Before removing the control box be sure to take out the wire screwed at the other end Earth ...

Page 45: ...move securing screws Pull the control box out from the chassis carefully 3 To remove the Discharge Grille Unhook the discharge grille and pull the discharge grille out from the chassis carefully 4 To remove the Evaporator Remove 3 screws securing the evaporator at the left 2EA in the Eva Holder at the right 1EA Screw When repair do not damage the Caution label ...

Page 46: ...f the slot 5 To remove the Motor Cover Remove 2 securing screw Pull the motor cover out from the chassis carefully 6 To remove the Cross Flow Fan Loosen the screw securing the cross flow fan to the fan motor do not remove Lift up the right side of the cross flow fan and the fan motor separate the fan motor from the cross flow fan Remove the left end of the cross flow fan from the self aligning bea...

Page 47: ...PORATOR HEAT EXCHANGE CONDENSER EEV COMPRESSOR ACCUMU LATOR GAS SIDE 3 WAY VALVE LIQUID SIDE 3 WAY VALVE COOLING HEATING REVERSING VALVE INDOOR UNIT OUTDOOR UNIT HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER COMPRESSOR ACCUMU LATOR GAS SIDE 3 WAY VALVE LIQUID SIDE 3 WAY VALVE COOLING HEATING REVERSING VALVE 1 Model Capillary Tube Refrigeration Cycle Diagram 2 Model Adopted Electronic Expansion ...

Page 48: ...ith cap Closed Open Open clockwise counter clockwise connected manifold gauge Open Open Open with charging cylinder Open Open Open with charging cylinder Open Open Open Open Works Shipping Air purging Installation Operation Pumping down Transfering Evacuation Servicing Gas charging Servicing Pressure check Servicing Gas releasing Servicing 1 2 3 4 5 6 Valve cap Open position Closed position Pin Se...

Page 49: ...move the cap from the 3 way valve s service port Using the hexagonal wrench to press the valve core pin discharge for three seconds and then wait for one minute Repeat this three times 5 Use torque wrench to tighten the service port nut to a torque of 1 8kg cm 6 Set the 3 way valve to the back seat 7 Mount the valve stem nuts to the 2 way and 3 way valves 8 Check for gas leakage At this time espec...

Page 50: ... push pin to the service port 4 Air purging of the charge hose Open the low pressure valve on the charge set slightly to air purge from the charge hose 5 Set the 2 way valve to the closed position 6 Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 1kg cm2 g 7 Immediately set the 3 way valve to the closed position Do this quickly so that the gauge ends up indi c...

Page 51: ...3 times After purging the air use a torque wrench to tighten the flare nut on liquid side valve 4 Check for gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the gas cylinder and dis charge the refrigerant until the gauge indicates 3 to 5 kg cm2 g 6 Disconnect the charge set and the gas cylin der and set the Liquid side and Gas side valves to th...

Page 52: ... service port 3 Open the valve Lo side on the charge set and discharge the refrigerant until the gauge indi cates 0 kg cm2 G If there is no air in the refrigerant cycle the pressure when the air conditioner is not running is higher than 1 kg cm2 G discharge the refrig erant until the gauge indicates 0 5 to 1 kg cm2 G if this is the case it will not be neces sary to apply a evacuatin Discharge the ...

Page 53: ...hour Confirm that the gauge needle has moved toward 76 cmHg vacuum of 4 mmHg or less 3 Close the valve Lo side on the charge set turn off the vacuum pump and confirm that the gauge needle does not move approxima tely 5 minutes after turning off the vacuum pump 4 Disconnect the charge hose from the vacuum pump Vacuum pump oil If the vacuum pump oil becomes dirty or depleted replenish as needed Lo O...

Page 54: ... of refrigerant it can be charged with a little at a time approximately 150g each time while operating the air conditioner in the cooling cycle however one time is not suffi cient wait approximately 1 minute and then repeat the procedure pumping down pin 4 Immediately disconnect the charge hose from the 3 way valve s service port Stopping partway will allow the gas to be dis charged If the system ...

Page 55: ...ween intake and discharge air depends on room air humidity When the room air humidity is relativery higher temperature difference is smaller When the room air humidity is relatively lower tem perature difference is larger 2 Check temperature and pressure of refrigeration cycle 1 The suction pressure is usually 8 5 9 5kg cm2 G Cooling at normal condition 2 The temperature can be measured by attachi...

Page 56: ...play Indoor Outdoor Indoor Operation O O O O O O O O O O O O O O O O Indoor Temp sensor error Sensor open or short Heat Sink sensor error Sensor open or short Heat Sink temp is over 95 Communication error Outdoor Temp sensor error Sensor open or short DC Peak error Over current error CT2 ON ON ON OFF SHUT DOWN SHUT DOWN 9times 9times 3 sec 10times 10times 3 sec 3 sec 3 sec 3 sec 3 sec 2times 10 ON...

Page 57: ...of operation indicator refer to the self diagnosis function Check the self diagnosis table Check the condition of connectors The condition of P C B pattern Check the condition of connectors The condition of P C B pattern The electronic components Indoor Outdoor 1 Error indicator of air conditioner 1 Indoor Operating LED Outdoor LED01M Red on the outdoor PCB 2 2 more errors occur at same time Air c...

Page 58: ...SP1 CN DISP2 of indoor PCB Check the voltage of power AC220V AC240V 50Hz The voltage of main power The voltage applied to the unit The connecting method of Indoor Outdoor connecting cable each color The P C B Ass y Fuse Noise Filter Power Module Bridge Diode etc Trouble 1 NO YES The operation check of the Indoor P C B Ass y Procedure 1 The input voltage of power mod ule 2 The output voltage of pow...

Page 59: ...d At this point the wind speed is not controlled by the remote controller When operated in the Sleeping Mode the wind speed is set to the low speed as force Caused by the remote controller Caused by other parts except the remote controller When the mark is displayed in LCD screen replace battery Check the contact of CN DISP 1 2 connector Check DISP P C B Ass y Voltage between CN DISP1 DC 5V Check ...

Page 60: ...indoor pcb is right No Check Indoor TH Measure resistance of TH air about 10k Ω at 25 C pipe about 5k Ω at 25 C YES No Check soldering state of R01H R04H C01H C02H Check flow 2 Outdoor TH sensor is short or open Outdoor TH sensor is not connected to the outdoorpcb assembly Damage or defect on the sensing circuit of outdoorpcb assembly R03H R06H C02H C03H Outdoor TH is short or open Description Err...

Page 61: ...door PCB assembly YES No Connect to CN TH2 in outdoor PCB assembly No Check soldering state of R01H R02H C01H Check flow Cause of error 4 Heat sink TH in outdoor pcb is open or short Heat sink Temp is over 95 C Damage or defect on the sensing circuit of outdoorpcb assembly R01H R02H C01H Heat sink Temp is over 95 C Heat sink TH in outdoor pcb is open or short Heat sink TH in outdoor pcb is Right S...

Page 62: ...ing connection Is right Is the voltage of T Block in outdoor about AC 220 240V YES No Indoor Outdoor 1 BR 1 BR 2 BL 2 BL 3 GN YL 3 GN YL 4 RD 4 RD No Check power connector Is not connected to the T Block in indoor unit Check flow Is the voltage of GND DC5V in Outdoor pcb about DC 5V YES No Check FUSE NF01 02J PTC Power Module BD 01S in Outdoor pcb assembly Communication circuit of indoor outdoor p...

Page 63: ... V BL W YL Check flow Refrigerant pressure is right YES No Check refrigerant pressure and adjust Is the compressor right YES No Check resistance Between U V V W U W port Short Open circuit Comp motor coil error normal 1 2 Ω Between U V W and Body Ê normal over10M Ω Inverter components in outdoor pcb assembly are right YES No 9 K 12K Model Check Short of SPM3 pins GND P U V W pin Direction of D01Z ...

Page 64: ...st Check flow Refrigerant pressure is right YES No Check refrigerant pressure and adjust Current sensing circuit is right YES No Check current sensing circuit check CT is damaged in outdoor pcb output wire is disconnected to pin or not BD01N is inserted in right position refer marking on pcb and component Spec of R01N 1kΩ R02N 1 65kΩ is correct Direction of diode D01N D02N is right Description Cau...

Page 65: ...n driving circuit is right YES No Check DC Fan Driving circuit Soldering state Direction R01F R09F C01F C03F IC01F IC03F Q01F Q02F ZD01F 9 Outdoor fan is locked by an obstacle ex branch of tree bar etc Fan connector is not connected to outdoor pcb assembly Defective in DC fan driving circuit Outdoor fan is locked BLDC fan model only Outdoor fan is rotating 1 Outdoor fan is rotating 2 YES No Check ...

Page 66: ...assembly Damage or defect on the sensing circuit of outdoor pcb assembly D Pipe TH is short or open D_PIPE TH is connected to Outdoor pcb assembly D_PIPE TH is right YES No Connect to CN D_PIPE in outdoor pcb assembly Sensing circuit of outdoor pcb is right No Check D_PIPE TH Measure resistance of TH about 200kΩ at 25 C YES No Check soldering state of R07H R08H C04H Check flow Description Cause of...

Page 67: ...for training and service purposes LGE Internal Use Only Wiring Diagram Schematic Diagram Indoor Unit Models AS W0964DH0 AS W0964GH0 AS W0964DH1 Models AS W1264DH0 AS W1865DH0 AS W1264GH0 AS W1224DH0 AS W1424DH0 AS W1825DH0 AS W096E1G0 AS W126E1G0 Schematic Diagram ...

Page 68: ...Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Schematic Diagram Outdoor Unit Models AS W0964DH0 AS W0964GH0 AS W0964DH1 Models AS W1264DH0 AS W1264GH0 AS W1224DH0 AS W1424DH0 ...

Page 69: ... 69 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Schematic Diagram Models AS W1865DH0 AS W1825DH0 Models AS W096E1G0 AS W126E1G0 ...

Page 70: ...ht reserved Only for training and service purposes LGE Internal Use Only Schematic Diagram Components Location TOP VIEW BOTTOM VIEW Indoor Unit Models AS W1264DH0 AS W1865DH0 AS W1264GH0 AS W1224DH0 AS W1424DH0 AS W1825DH0 AS W096E1G0 AS W126E1G0 ...

Page 71: ... 71 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only BOTTOM VIEW TOP VIEW Schematic Diagram Models AS W0964DH0 AS W0964GH0 AS W0964DH1 ...

Page 72: ...D R 0 8 P C 0 5 D C 0 5 P IC01P R 0 6 P C 0 4 Z R 0 4 Z C 0 1 P R 0 5 P C 0 2 P R 0 7 P C 0 3 P R 0 9 P C 0 3 Z C 0 2 Z R 0 2 Z C 0 6 Z C 0 5 Z R 0 5 Z C 1 6 Z R 0 6 Z R 0 3 Z D 0 2 N R 0 1 A 1 7 R 0 3 A R 0 1 M I C 0 1 K D 0 1 K R 0 7 K R09K R 0 8 K F U S E R 0 6 K C 0 3 K Z D 0 3 K R 0 5 K ZNR01J R 0 2 M O S C 0 1 B C 0 1 A C 0 4 C R 0 1 X C 0 1 X R 0 2 X R 0 7 S 1 I C 0 1 M 1 6 R 0 1 K C 0 8 S ...

Page 73: ...2K C04K ZNR01J SURGE C01J C03J C02J R02J R05C R01N D02N C01C C03K D02C R07C R06C R02N D01N C03C BD01N NF01J C04J R03J C05J BD01S R03S C09S BD02S CN COIL1 CN 4AWY CN COIL2 JS21 23 WCN CAP1 RY 4WAY WCN CAP2 RY L RY H CN FAN1 R04J CT T1 PTC C07J C08J C09J NF02J CN FAN2 CN LEV PWB P NO 6870A90148A 030509 10 R15Z 9 8 7 6 5 4 3 2 1 R16Z R17Z C16Z SPM2 IC01S 23 22 21 20 19 18 17 16 15 14 13 12 11 R14Z R1...

Page 74: ...T D01C R01C R02C J09 J10 J16 J11 J13 J12 C02S C01S J15 J14 RY 4WAY RY H PUMP RY PUMP CN COIL1 C03S R03S CN COIL2 J08 J07 J06 J01 J04 J03 J02 J05 CN PUMP CN FAN1 PUMP C01M HEATSINK R12Z R22Z R21Z R20Z C04Z C05Z C06Z R03Z R02Z R01Z C16Z C15Z C10Z R08Z C12Z C01Z C11Z D03Z R09Z C13Z C14Z C03Z C17Z C02Z R11Z C08Z C07Z C09Z C08S D01Z R07Z D02Z C05S R04S C06S R01S C07S C09S R05S C04S R02S BL WH D02N C03F...

Page 75: ...Schematic Diagram DISPLAY ASSEMBLY 6871A20574A 6871A20624A 75 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 76: ...in Length std m in Drain Hose O D I D mm in Indoor mm Dimension inch W H D Outdoor mm inch Net Weight Indoor kg lbs Outdoor kg lbs 1 758 1 143 2 755 1 512 983 2 369 6 000 3 100 9 400 2 637 3 516 5 274 2 268 3 024 4 536 9 000 12 000 18 000 3 033 4 043 6 096 2 608 3 478 5 242 10 350 13 800 20 800 1 465 879 1 406 1 260 756 1 210 5 000 3 000 4 800 3 296 4 043 6 065 2 835 3 478 5 216 11 250 13 800 20 7...

Page 77: ...Med dB A 3 Pressure 1m Low dB A 3 Outdoor Max dB A 3 Refrigerant R410A Charge Power Cord AWG P mm2 Connecting Cable AWG P mm2 Connecting Tube Liquid Side mm in Ø Socket Flare Gas Side mm in Length std m in Drain Hose O D I D mm in Indoor mm Dimension inch W H D Outdoor mm inch Net Weight Indoor kg lbs Outdoor kg lbs 900 900 770 770 3 070 3 070 2 630 3 510 2 260 3 020 9 000 12 000 3 700 4 040 3 180...

Page 78: ...D mm in Dimension Indoor mm W H D inch Outdoor mm inch 980 1 140 989 1 150 1 548 1 800 3 890 6 142 3 024 3 517 3 528 4 102 4 536 5 274 12 000 14 000 18 000 3 474 4 040 3 732 4 340 4 987 5 800 13 800 14 810 19 790 757 880 765 892 1 204 1 400 3 003 3039 4 777 3 478 4 043 3 780 4 396 5 242 6 096 13 800 15 000 20 800 4 007 4 660 4 119 4 790 5 761 6 700 15 900 16 344 22 861 1 100 1 320 1 600 1 120 1 30...

Page 79: ...Indoor High dB A 3 Sound Low dB A 3 Pressure 1m Outdoor Max dB A 3 Refrigerant R410A Charge g oz Power Cord P mm2 Connecting Cable P mm2 Connecting Tube Liquid Side mm in Ø Socket Flare Gas Side mm in Length std m in Dimension Indoor mm W H D in Outdoor mm in Net Weight Indoor kg lbs Outdoor kg lbs Energy Labeling Capacity Cooling Heating Energy Consumption Cooling Heating Star Rating Cooling Heat...

Page 80: ...GE Internal Use Only Exploded View Exploded View 152302A 152302B 342800 264110 263230A 359011 131410 733010 135316 135314 135311 147581 268711A 146811 346810 266090 135516 35211B 352150 354210 249951 268711D 267110 152313 159830 Option Parts Part for Plasma Models Part for Plasma Models Indoor Unit ...

Page 81: ... LGE Internal Use Only Exploded View 152302 342800 264110 263230A 359011 131410 733010 135316 135314 135311 147581 268711A 146811 346810 266090 135516 35211B 352150 354210 249951 268711D 267110 152313 159830 Option Parts Part for Plasma Models Part for Plasma Models Models AS W096E1G0 AS W126E1G0 ...

Page 82: ...rposes LGE Internal Use Only Exploded View 152301 342800 264110 263230A 359011 131410 733010 135316 135314 135311 147581 268711A 146811 346810 266090 135516 35211B 352150 354210 249951 268711D 267110 152313 159830 Option Parts Part for Plasma Models Part for Plasma Models Models AS W1865DH0 ...

Page 83: ...ly Exploded View Outdoor Unit Models AS W0964DH0 AS W1264DH0AS W0964GH0 AS W1264GH0 AS W1224DH0 AS W1424DH0 AS W0964DH1 UL Chassis 554031 435511 552202 552116 554160 561410 552111 550140 552203B 552203A 430411 649950 437211 435301 559010 349480 546810 349600 261704 447910 263230B 263230C 268711F Part for H P Models ...

Page 84: ...es LGE Internal Use Only Exploded View Models AS W096E1G0 AS W126E1G0 UL Chassis 554031 435511 552202 552116 554160 552560 561410 550140 552203B 552203A 430410 649950 437211 661400 437212 435301 559010 546810 549610 261704 447910 263230B 263230C 268711F 55211G 552200 Part for H P Models 349480 ...

Page 85: ...ing and service purposes LGE Internal Use Only 554031 437212 263230B 435511 552202 552116 554160 561410 435512 550140 552203B 552203A 430411 437210 649950 552102 559010 546810 349600 447910 263230C Part for H P Models Models AS W1865DH0 AS W1825DH0 UE Chassis Exploded View ...

Page 86: ...P No 3828A20462G MAY 2008 ...

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