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LG AS-H306DGM0, Manual

The LG AS-H306DGM0 is an innovative air conditioner unit designed for optimal comfort. Enhance your living spaces with this high-performance cooling solution. Download the free user manual from manualshive.com and easily set up and operate your LG AS-H306DGM0, ensuring maximum satisfaction and convenience for all users.

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Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

Air Conditioner Service Manual

TABLE OF CONTENTS

LG Model Name

...............................................................................................................................................

3

Safety Precautions

..........................................................................................................................................

5

Dimensions

....................................................................................................................................................

10

Symbols Used in this Manual ...................................................................................................................10
Indoor Unit................................................................................................................................................10

Product Specifications

................................................................................................................................

13

Installation

.....................................................................................................................................................

16

Selection of the Best Location..................................................................................................................16
Piping Length and Elevation.....................................................................................................................16
How to Fix Installation Plate .....................................................................................................................17
Drill a Hole in the Wall ..............................................................................................................................17
Drain hose junction...................................................................................................................................17

Flaring work and connection of piping

.......................................................................................................

18

Flaring work..............................................................................................................................................18
Connection of piping -- Indoor ..................................................................................................................18
Connection of the pipes-Outdoor .............................................................................................................22

Connecting the cable between indoor unit and outdoor unit

...................................................................

23

Connect the cable to the Indoor unit. .......................................................................................................23
Connect the cable to the outdoor unit ......................................................................................................24

Checking the drainage and forming the pipings

........................................................................................

25

Checking the drainage .............................................................................................................................25
Form the piping ........................................................................................................................................25

AIR PURGING

................................................................................................................................................

26

Air purging ................................................................................................................................................26
Air purging with vacuum pump .................................................................................................................26

TEST RUNNING

.............................................................................................................................................

28

Operation

.......................................................................................................................................................

29

Function of Controls .................................................................................................................................29
Portection from overheating of power module..........................................................................................33
Portection from overheating of compressor .............................................................................................33
Display Function ......................................................................................................................................34
Self-diagnosis Function ............................................................................................................................34
Remote Control Operations......................................................................................................................35

Disassembly

..................................................................................................................................................

36

Indoor Unit................................................................................................................................................36

Schematic Diagram

.......................................................................................................................................

39

Electric Control Device .............................................................................................................................39
Wiring Diagram.........................................................................................................................................41
Components Location ..............................................................................................................................50

Troubleshooting Guide

.................................................................................................................................

54

Refrigeration Cycle Diagram ....................................................................................................................54
2-way,  3-way Valve  .................................................................................................................................56
Cycle Parts ...............................................................................................................................................62
Electronic Parts ........................................................................................................................................63

Exploded View

...............................................................................................................................................

70

Summary of Contents for AS-H306DGM0

Page 1: ...SD1 LS C302DGM1 S302CP SD1 LS C362DGB1 S362CG SD1 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 LS C362DGM1 S362CP SD1 LS H366DGM1 S366GQ SD1 LS H366DGB0 S366GH SD0 LS C366DGM1 S366GP SD1 LS C366DGB0 S366GC SD0 LS C366DGB0 S386GC SD0 LS H366DGM1 S386GQ SD1 LS H362DGB1 S362HG SD1 AS ...

Page 2: ...oor 22 Connecting the cable between indoor unit and outdoor unit 23 Connect the cable to the Indoor unit 23 Connect the cable to the outdoor unit 24 Checking the drainage and forming the pipings 25 Checking the drainage 25 Form the piping 25 AIR PURGING 26 Air purging 26 Air purging with vacuum pump 26 TEST RUNNING 28 Operation 29 Function of Controls 29 Portection from overheating of power module...

Page 3: ... 50Hz 3Phase 5 200 220V 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 LSP SP Chassis 8 Look A Z Look Color Artcool Model 9 Function A Z 10 Serial No 1 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 plasm...

Page 4: ... 200V CHASSIS Look D K L G M N D P Division 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 LSP SP Chassis 8 Look A Z Look Color Artcool Model 9 Function A Z 10 Serial No 1 9 LG Model De ARTCOOL COLOR velopment Serial No R Mirror W White B Blue D Wood M Metal C Cherry S4 S5 S6 SQ SR ...

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: ...mensions Dimensions Installation plate D H W W mm 1209 H mm 346 D mm 205 Model Dimension 24k 38k 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: ...poses LGE Internal Use Only MODEL DIM W L7 L6 L8 L9 D L1 L2 L3 L10 L11 L4 L5 H Gas side 3 way valve Liquid side 2 way valve W mm 870 H mm 800 D mm 320 L1 mm 370 L2 mm 340 L3 mm 25 L4 mm 775 L5 mm 25 L6 mm 546 L7 mm 162 L8 mm 162 L9 mm 54 L10 mm 79 L11 mm 76 4 24k 30k 32k Btu Series 24k 30k 32k Series ...

Page 12: ...LGE Internal Use Only L6 L7 L8 L9 L4 H L5 W D L1 L3 L2 L10 L11 Gas side 3 way valve Liquid side 3 way valve 36k 38k Btu Series MODEL DIM W mm 870 H mm 1038 D mm 320 L1 mm 360 L2 mm 340 L3 mm 25 L4 mm 1035 L5 mm 25 L6 mm 546 L7 mm 160 L8 mm 160 L9 mm 44 L10 mm 75 L11 mm 80 36k 38K Series Dimensions ...

Page 13: ...58 58 58 58 58 48 48 48 48 46 58 58 58 58 58 3250 3150 3150 3200 1980 3450 3440 2350 14 7 14 5 14 5 14 5 9 14 9 15 5 11 2 62 2 6 2 6 2 57 3 43 2 63 2 56 3 19 55 55 55 55 8 55 88 88 88 82 88 1209 346 205 1209 346 205 1209 346 205 1209 346 205 1209 346 205 870 800 320 870 800 320 870 800 320 870 800 320 870 800 320 18 18 18 18 18 75 75 75 75 75 2450 1700 2400 2400 2500 O O O O O O O O O O O O O O O ...

Page 14: ...60Hz 1Ø 220V 240V 50Hz 1Ø 220V 240V 50Hz 1Ø 220V 60Hz 1Ø 220V 240V 50Hz 22 22 22 22 25 64 64 64 64 58 51 51 51 51 51 60 60 60 60 60 3750 4200 4200 3700 3650 3900 3900 3600 17 5 19 19 17 16 18 18 16 2 66 2 51 2 51 2 85 2 73 2 69 2 71 2 85 77 2 76 1 76 1 77 2 76 1 41 41 41 41 41 1209 346 205 1209 346 205 1209 346 205 1209 346 205 1209 346 205 870 1038 320 870 1038 320 870 1038 320 870 1038 320 870 1...

Page 15: ...ting Motor Output Indoor W Outdoor Dimensions Indoor mm W x H x D Outdoor Net Weight Indoor kg Outdoor Refrigerant R410A g R22 Airflow Direction Control Up Down Airflow Direction Control Left Right Chaos Wind Timer Self Diagnosis Remocon Type Service Valve Liquid inch mm Gas Sleeping Operation Drain Hose Connecting Cable Power Cord Table 3 9 3 10 15 4 2 1_ 220V 240V 50Hz 25 58 51 60 3680 3700 16 1...

Page 16: ...count and select a place where noise and vibration are minimum Select a place so that the warm air and noise from the air conditioner do not disturb neighbors Rooftop Installations If the outdoor unit is installed on a roof structure be sure to level the unit Ensure the roof structure and anchoring method are adequate for the unit location Consult local codes regarding rooftop mounting More than B...

Page 17: ...m hole core drill Drill the piping hole at either the right or the left with the hole slightly slanted to the outdoor side Open the Front Grille Pass Telephone Control Cord Wire through the hole which the power cord goes through Connect Telephone Control Cord Wire to the phone jack of telephone PCB of Control Box Fix Telephone Control Cord Wire inside Control box so as not to disconnect Close the ...

Page 18: ... the original position Optional Carry out flaring work using flaring tool as shown below Burr removal Completely remove all burrs from the cut cross section of pipe tube Put the end of the copper tube pipe in a downward direc tion 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 havi...

Page 19: ...per side can cause drain pan to overflow inside the unit NOTE If the drain hose is routed inside the room insulate the hose with an insulation material so that dripping from sweating condensation will not damage furniture or floors Foamed polyethylene or equivalent is recommended Indoor unit installation Hook the indoor unit onto the upper portion of the installa tion plate Engage the two hooks of...

Page 20: ...hose to the required piping hole position Insert the piping drain hose and the connect ing cable into the piping hole Insert the connecting cable into the indoor unit Don t connect the cable to the indoor unit Make a small loop with the cable for easy connection later Indoor unit installation Hang the indoor unit from the hooks at the top of the instal lation plate Insert the spacer etc between th...

Page 21: ...s engage into their slots clicking sound Bundle the piping and drain hose together by wrapping them with cloth 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 Set the pipings and the drain hose to the back of the chassis with the tubing holder Hook the edge of tubing holder to tap on chassis and pu...

Page 22: ...rque wrench until the wrench clicks When tightening the flare nut with torque wrench ensure the direction for tightening follows the arrow on the wrench Bad case Following bending type from right to left could cause problem of pipe damage Connection of the pipes Outdoor mm inch kg m Ø6 35 1 4 1 8 Ø9 52 3 8 4 2 Ø12 7 1 2 5 5 Ø15 88 5 8 6 6 Ø19 05 3 4 6 6 Outside diameter Torque Outdoor unit Gas sid...

Page 23: ...L CROSS SECTIONAL AREA 0 75mm2 The power cord connected to the outdoor unit should be complied with the following specifications Rubber insulation type H05RN F approved by HAR or SAA The connecting cable connected to the indoor and outdoor unit should be complied with the following specifications Rubber insulation type H07RN F approved by HAR or SAA 20mm 7 5mm NORMAL CROSS SECTIONAL AREA 0 75mm2 2...

Page 24: ...ng in the casing of electrical fittings are liable to come loose from vibrations 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...

Page 25: ...nd connecting cable from down to up Secure the tapped piping along the exterior wall using sad dle or equivalent To check the drainage Pour a glass of water on the evaporator Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit In cases where the Outdoor unit is installed above the Indoor unit perform the following Tape the piping and con...

Page 26: ...ration 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 manif...

Page 27: ...net on the gas 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...

Page 28: ...at 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 29: ... timer mode is completed or canceled Defrost Indicator OFF except when hot start during heating mode operation or while in defrost control Cooling Mode Operation When the intake air temperature reaches 0 5 C below the setting temp the compressor and the outdoor fan stop When it reaches 0 5 C above the setting temp they start to operate again Compressor ON Temp Setting Temp 0 5 C Compressor OFF Tem...

Page 30: ...fter 40 min heating mode operation at 4 min interval whether to carry out defrost control or not and the time of defrost control are determined according to the following conditions 1 While in heating mode operation the maximum of the indoor pipe temperature is measured and it is com pared with the present indoor pipe temperature to get the difference of the indoor pipe temperatures the maximum te...

Page 31: ... Cool mode operation the room temperature is controlled to the setting temperature 18 C When the sleep timer mode is input while in the Jet Cool mode operation the Jet Cool mode has the priority When the Jet Cool key is input the upper lower vanes are reset to those of the initial cooling mode and then operated in order that the air outflow could reach further Jet Cool Mode Operation H P Model Whi...

Page 32: ...gain after a power failure Auto Restarting Operation is the function to operate procedures automatically to the previous operating conditions Protection of the evaporator pipe from frosting If the indoor pipe temp is below 0 C in 7 min after the compressor operates without any pause while in cool ing cycle operation mode the compressor and the outdoor fan are turned off in order to protect the ind...

Page 33: ...r operating frequency according to the compressor 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 T...

Page 34: ... Model Cooling Soft Dry Fan Heating Cooling Soft Dry Fan Hot start Deice Operation Indicator Deicer Indicator Operation Indicator Compressor on Indicator OUT DOOR 3sec 3sec 3sec once Error Code 1 Error Display LED Indoor body operation LED Error contents Indoor room temperature thermistor open short Indoor pipe temperature thermistor open short Indoor Thermistor assembly check SVC check point ...

Page 35: ...hen the desired time is obtained and to cancel the Timer operation 10 SLEEP MODE AUTO BUTTON Used to set Sleep Mode Auto operation 11 AIR CIRCULATION BUTTON Used to circulate the room air without cooling or heating 12 ROOM TEMPERATURE CHECKING BUTTON Used to check the room temperature 13 PLASMA OPTIONAL Used to start or stop the plasma function 14 HORIZONTAL AIRFLOW DIRECTION CONTROL BUTTON OPTION...

Page 36: ...e sure the power 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 othe...

Page 37: ...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 4 screws securing the evaporator at the left 2EA in the Eva Holder at the right 2EA Screw When repair do not damage the Caution label ...

Page 38: ...b is clear of 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 ...

Page 39: ...V 0 ohm R03D 8 9 2 3 15 14 1 16 KID65004AF IC01G 5V 6 5 11 12 10 7 4 13 C08D AXIAL KID65004AF 12V 8 9 IC01M 3 4 14 13 2 1 16 15 UPD780023AGC C Vss0 NEC B Z INT1 X2 X1 Vss1 INT0 R01B 1M 4 5 6 1 2 3 12 16 15 14 13 11 8 7 KID65004AF IC02M 9 10 R02H 12 1K 1 Only no low temporature detection function 1 C01H R01H 1 6W 10K R03H 1 6W 10K 103 AXIAL 50V 10K R05H R06H 1 6W 10K R04H 6 2K 5V 6 2K R07H R21H R26...

Page 40: ... 40 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Schematic Diagram Cooling Only Models ...

Page 41: ... 41 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Outdoor Unit Wiring Diagram Schematic Diagram AS H306D SERIES Indoor Unit ...

Page 42: ...opyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Schematic Diagram Outdoor Unit LS C306D SERIES LS C302D SERIES LSNC306DGB0 AMBAIDA Indoor Unit ...

Page 43: ... 43 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Schematic Diagram Outdoor Unit LS C366D SERIES Indoor Unit ...

Page 44: ... 44 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Outdoor Unit LS H306D SERIES Indoor Unit Schematic Diagram ...

Page 45: ... 45 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Schematic Diagram Outdoor Unit LS H366D SERIES Indoor Unit ...

Page 46: ... 46 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Outdoor Unit LS C362D SERIES Indoor Unit Schematic Diagram ...

Page 47: ... 47 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Outdoor Unit LS H362D SERIES Indoor Unit Schematic Diagram ...

Page 48: ... 48 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Outdoor Unit AS H366DGM1 AS H366DGM2 Indoor Unit Schematic Diagram ...

Page 49: ... 49 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Outdoor Unit AS W246DGH0 Indoor Unit Schematic Diagram ...

Page 50: ... 50 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Schematic Diagram Components Location MAIN P W B ASSEMBLY TOP VIEW BOTTOM VIEW ...

Page 51: ... 51 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Schematic Diagram Indoor Unit Models AS W246DGH0 TOP VIEW BOTTOM VIEW ...

Page 52: ... 52 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Schematic Diagram Outdoor Unit Models AS W246DGH0 TOP VIEW BOTTOM VIEW ...

Page 53: ... 53 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Schematic Diagram DISPLAY ASSEMBLY 6871A20681 6871A20624 ...

Page 54: ... OUTDOOR UNIT HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER HEAT EXCHANGE CONDENSER COMPRESSOR COMPRESSOR ACCUMU LATOR GAS SIDE GAS SIDE 3 WAY VALVE LIQUID SIDE LIQUID SIDE 3 WAY VALVE CAPILLARY TUBE CAPILLARY TUBE CHECK VALVE Heating Model only COOLING HEATING REVERSING VALVE Heating Model Only 1 Cooling Only Models Refrigeration Cycle Diagram 2 Cooling Heating Models ...

Page 55: ...rposes LGE Internal Use Only Troubleshooting Guide 3 Model Adopted Electronic Expansion Valve INDOOR UNIT OUTDOOR UNIT HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER EEV COMPRESSOR ACCUMU LATOR GAS SIDE 3 WAY VALVE LIQUID SIDE 3 WAY VALVE COOLING HEATING REVERSING VALVE Heating Model Only ...

Page 56: ...with 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 S...

Page 57: ...he 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 cating 3 to 5kg cm2 g 8 Disconnect the charge set and mount the 2 way and 3 way valve s stem nuts and the ser vice port nut Use torque wre...

Page 58: ...e 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 59: ... 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 Open Open Vacuum pump 2 Way valve Outdoor uni...

Page 60: ...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 has been charged with l...

Page 61: ... operating the unit for 10 minutes The method of using graph Find outdoor temperature Find indoor temperature onto the curve of outdoor temperature Read suction pressure at the axis of ordinates The method of using equation Calculate suction pressure after putting indoor and outdoor temperature into the equation 13 At operating the Unit for 10 minutes Suction Pressure Kg cm 2 g Outdoor Temp C Indo...

Page 62: ...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 temperature difference is larger 2 Check temperature and pressure of refrigeration cycle 1 The suction pressure is usually 8 5 9 5 kg cm2 G Cooling at normal condition 2 The temperature can be measured by attachi...

Page 63: ...necting cable Check PWB Assembly Fuse Pattern damage Varistor ZNR01J Check the connection housing for contacting Connector related to CN NI RY COMP NO 3 Connector related to CN MOTOR Connector contacting of Outdoor Fan Compressor Display PCB Assembly Check Check each load Indoor Outdoor Fan Motor Compressor Stepping Motor and contacting condition of related connector Main PCB Board Operation Check...

Page 64: ... When the mark is displayed in LCD screen replace battery Check the contact of CN DISP1 connector When the compressor stopped Indoor Fan is driven by a low speed 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 by force Check Display PCB Assembly Voltage between CN DISP1 DC 5V Check the connecting circ...

Page 65: ...ature and connector are in bad connection or are not engaged Compressor Outdoor Fan is stopped Check the related circuit of RY FAN Check the indoor temperature sensor is disconnected or not About 10kΩ at 25 C Turn off Main Power Check the electrical wiring diagram of outdoor side Check the abnormal condition for the component of Compressor Outdoor Fan Motor Check the open or short of conmecting wi...

Page 66: ...otor Check the Fuse AC250V T2A Turn ON Main Power Check the related circuit of indoor Fan Motor The pin NO 58 of Micom and the part for driving TRIAC the input and output signal of IC01M PIN NO 1 16 Check the pattern Check the TRIAC TRIAC Open Indoor Fan Motor never operate TRIAC short Indoor Fan Motor always operates in case of ON or OFF When indoor Fan does not operate The voltage of PIN NO 1 or...

Page 67: ...ndition of CN U D Connector Check the soldering condition on PWB of CN U D Connector If there are no problems after above checks Confirm the assembly conditions that are catching and interfering parts in the rotation radial of the Vertical Louver When Vertical Louver does not operate Check the operating circuit of the Vertical Louver Confirm that there is DC 12V between pin RED of CN U D and GND C...

Page 68: ...circuit of RY 4WAY Check the indoor room temperature is disconnected or not about 10KΩ at 25 C Check the indoor pipe temperature is disconnected or not about 5KΩ at 25 C Turn ON Main Power Check the DC voltage on the PWB ASSEMBLY The details of check are as followings Check point Between Micom NO 59 and GND Between IC01M NO 15 and GND Comp ON DC 5V Below DC 1V Comp OFF DC 0V About DC 12V Check poi...

Page 69: ...ice purposes LGE Internal Use Only Troubleshooting Guide Turn off Main Power Check the electrical wiring diagram of outdoor side Check the abnormal condition for the component of Compressor Outdoor Fan Motor 4 way Check the open or short of connecting wires between indoor and outdoor ...

Page 70: ...al Use Only Exploded View Exploded View 152302 159830 342800 263230 359011 131410 733010 249951 135311 354210 147581A 147581B 135516 268711A 146811A 346810 266090 W0CZZ 352116 W6640 268711B 267110 135314 152313 Option Parts 135316 146811B 352115 352150 Part for Plasma Model Part for Plasma Model Indoor Unit ...

Page 71: ...w 152302 159830 342800 263230 359011 131410 733010 249951 135311 147581A 147581B 135516 268711A 146811A 346810 266090 W0CZZ 352116 W6640 268711B 267110 135314 152313 Option Parts 135316 146811B 352115 352150 354210A 354210B Part for Plasma Model Part for Plasma Model Models LS C H 366DGM1 LS C H 366DGB0 LS C H 362DGB1 LS C362DGM1 ...

Page 72: ...s LGE Internal Use Only Exploded View 447910 550140 552202 561410 552116 554160 649950 552203A 552203B 435512 554031 435300 137213A 137213B 559010 435301 430411 546810 349600 437210 435511 552111 268711C W0CZZB W0CZZA W6920 Part for H P Model Outdoor Unit Models LSUC306D LSUH306D LSUC302D Series ...

Page 73: ...e purposes LGE Internal Use Only Exploded View 447910 550140 552202 561410 552116 554160 649950 552203A 552203B 435512 554031 435300 137213A 137213B 559010 435301 430411 546810 349600 437210 435511 552111 268711C W0CZZB W0CZZA W6920 Part for H P Model 349480 W6640 W6631 Models ASUH306D ...

Page 74: ...for training and service purposes LGE Internal Use Only Exploded View 546810 559010 552111 554031 435512 435301 349480 437211 137213B 137213A 435300 552112 435511 W0CZZA W0CZZA 430411 552203B 552203A 649950 447910 349600 W6920 550140 554160 Models LSUC362D SERIES ...

Page 75: ...Only for training and service purposes LGE Internal Use Only Exploded View Models LSUC382DGB0 546810 559010 552111 554031 435512 435301 349480 437211 137213B 137213A 435300 552112 435511 W0CZZA W0CZZA 430411 552203B 552203A 649950 447910 349600 550140 554160 ...

Page 76: ...nd service purposes LGE Internal Use Only Exploded View 546810 559010 552111 554031 435512 435301 437211 447910 137213B 137213A 435300 552112 435511 430411 552202 561410 552116 554160 649950 349600 552203A 552203B W0CZZA W0CZZB 566001 268711C Part for H P Model Models LSUH366D ...

Page 77: ...training and service purposes LGE Internal Use Only 546810 559010 552111 554031 435512 435301 437211 447910 137213B 137213A 435300 552112 435511 430411 554160 550140 649950 W6640B 349600 552203A 552203B W0CZZA W0CZZB 566001 268711C W6640A Models LSUC366D Exploded View ...

Page 78: ...ce purposes LGE Internal Use Only Exploded View 546810 559010 435512 435301 437211 447910 552112 552113 430411 552202 561410 552116 554160 649950 349600 554031B 554031A 552203A 552203B W0CZZA W0CZZB 566001 268711C Part for H P Model 137213B 137213A 435300 435511 Models LSUH362D SERIES ...

Page 79: ...poses LGE Internal Use Only Exploded View 546810 349600 559010 552111 554031 435512 435301 349480 437211 447910 137213B 137213A 435300 435511 430411 552203A 552203B 649950 W0CZZA 268711C W6640B W6640A W0CZZB 552202 561410 552116 566000 554160 Part for H P Model Models ASUH366DGM1 ASUH366DGM2 ...

Page 80: ... training and service purposes LGE Internal Use Only Models AS W246DGH0 554031 435300 137213A 137213B 263230A 435511 552202 552116 554160 561410 435512 550140 430411 649950 559010 437211 546810 349600 447910 263230B 552203A 552203B 552113 552200 435301 Exploded View ...

Page 81: ...P NO 3828A20195Z FEBRUARY 2009 ...

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