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

LGE Internal Use Only

Troubleshooting Guide

Refrigeration Cycle Diagram

Troubleshooting Guide

Drier

Th1

Th2

Th3

LEV

Field Piping

Gas

Field Piping

Liquid

Accumulator

Low Pressure

S/W

Constant

Compressor

Inverter

Compressor

Solenoid
Valve(1)

Solenoid
Valve(2)

Heat

Exchanger

Reversing

Valve

Check

Valve(2)

Check

Valve(1)

OUTDOOR UNIT

Oil

Seperator

Refrigerant Flow

Cooling

Heating

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Содержание AS-W306MMH0

Страница 1: ...er SVC MANUAL Exploded View MODEL AS W306MMH0 AS W306MMH1 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 ...

Страница 2: ...del Name 3 Safety Precautions 5 Dimensions 10 Product Specifications 12 Installation 14 Flaring work and connection of piping 16 Connecting the cable between indoor unit and outdoor unit 23 Checking the drainage and forming the pipings 25 Air purging 27 Test running 29 Functions 30 Operation 33 Disassembly 40 Schematic Diagram 44 Troubleshooting Guide 48 Exploded View 76 ...

Страница 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 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 plasm...

Страница 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 0 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 10: ...nsions D H W Installation Plate W mm inch 1 259 49 6 H mm inch 349 13 7 D mm inch 205 8 1 Model Dimension 30k 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 ...

Страница 11: ...erved Only for training and service purposes LGE Internal Use Only Dimensions L4 L3 H L7 L5 L6 W D L1 L2 D W H MODEL DIM unit W mm 870 H mm 1 060 D mm 320 L1 mm 360 L2 mm 20 L3 mm 1 040 L4 mm 20 L5 mm 550 L6 mm 160 L7 mm 165 Outdoor Unit 30k Btu Series ...

Страница 12: ... Cooling W W Heating W W Power Supply Ø V Hz Power Factor Air Circulation Indoor Max m3 min CFM Outdoor Max m3 min CFM Moisture Removal l h pts h Noise Level Indoor High dB A 3 Sound 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 ...

Страница 13: ...igh 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 Heating Tool...

Страница 14: ...weight into account 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 mounti...

Страница 15: ...horizontally by aligning the centerline using a level 2 Measure the wall and mark the centerline It is also important to use caution concerning the location of the installation plate routing of the wiring to power outlets is through the walls typically Drilling the hole through the wall for piping con nections must be done safely 5 7mm 0 2 0 3 Indoor WALL Outdoor Installation Plate Type A screw Ri...

Страница 16: ... 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 complet ed burr removal not possible to put them on after flaring work Copper pipe 90 Slanted Uneven Rough Bar Copper pipe Clamp handle Red arrow mark Cone Yoke Handle Bar A Pipe Reamer Point down Flaring work Carry out flaring wo...

Страница 17: ...ing the connector s hook Remove the 1 screw for fixing lower panel 3 Remove the lower panel by the arrow Take care not to scratch the wall and mat to drop 1 Route the indoor tubing and the drain hose in the direction of rear left 2 Insert the connecting 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 ca...

Страница 18: ...it installation Hook the indoor unit onto the upper portion of the installation plate Engage the three hooks of the rear top and rear lower of the indoor unit with the upper edge and lower edge of the installation plate Ensure that the hooks are properly seated on the installation plate by moving it left and right NOTICE 5 Connecting the pipings to the indoor unit and drain hose to drain pipe Alig...

Страница 19: ...nyl tape over the range with in which they fit into the rear piping housing sec tion 1 Route the indoor tubing and the drain hose to the required piping hole position 2 Insert the piping drain hose and the connecting cable into the piping hole 3 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 4 T...

Страница 20: ...th a wrench When extending the drain hose at the indoor unit install the drain pipe 7 Wrap the insulation material around the connecting portion Overlap the connection pipe heat insulation and the indoor unit pipe heat insulation material Bind them together with vinyl tape so that there is no gap Wrap the area which accommodates the rear piping housing section with vinyl tape Installation plate Th...

Страница 21: ...ich they fit into the rear piping housing section 8 Reroute the pipings and the drain hose across the back of the chassis 9 Reinstall the parts to the original position Refix the lower panel to the original position Connect display conductor Refix the front right side panel to the original position with the two screws Drain hose Vinyl tape narrow Pipe Wrap with vinyl tape wide Lower panel Main PCB...

Страница 22: ...he rubber plug and drain hose into the drain outlets Be sure the rubber the cap is securely fastened so that there is no leakage 1 Align the center of the pipings and sufficiently tighten the flare nut by hand 2 Finally 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 wrenc...

Страница 23: ...t 2 N Terminals on the indoor unit 1 L 3 2 N 1 L 3 Terminals on the outdoor unit Color of Wires POWER INPUT Color of Wires 2 N 1 L RED G Y BROWN BLUE RED G Y BROWN BLUE Air Conditioner Main power source 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 ...

Страница 24: ... posted on the inside of control cover 2 The screw which fasten the wiring 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 capacit...

Страница 25: ...ft side panel Remove the two screws 4 To check the drainage Pour a glass of water on the drain pan Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit 5 Drain piping The drain hose should point downward for easy drain flow Do not make drain piping Right side panel Downward slope Do not raise Accumulated drain water Tip of drain hose dipp...

Страница 26: ...ndoor unit perform the following Tape the piping drain hose and connecting cable from down to up Secure the tapped piping along the exterior wall using saddle or equivalent 3 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 piping along the exterior wall Form a trap to prevent water enteri...

Страница 27: ...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 manifold valve with pressure gauges and dry nitrogen gas cylinder to this service port with charge hoses Pressurize the system to no more than 150 P S I G with dry nitrogen gas and close the cylinder valve when the gauge reading reached 150 P S I G Next...

Страница 28: ...he 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 gas side and liquid side valves 2 Remove th...

Страница 29: ...re are higher than shown the system is most likely over charged and charge should be removed If the actual pres sure are lower than shown the system is most likely undercharged and charge should be added The air conditioner is now ready for use Bolt Tubing connection Outside ambient TEMP The pressure of the gas side service valve 35 C 95 F 4 5kg cm2 G 56 8 71 0 P S I G This is performed when the u...

Страница 30: ...oling Mode Operation Healthy dehumidification Mode Operation Heating Mode Operation Jet Cool Mode Operation Jet Heat Mode Operation Optional On Off Lights up during the system operation Lights up during Timer operation or Sleep mode Defrost Mode Lights up during Defrost Mode or Hot Start operation Heat pump model only Lights up during outdoor unit operation Cooling model only Plasma Mode Lights up...

Страница 31: ... 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 New CHAOS Logic Airflow Direction Control The function will be operated while in any operation mode wi...

Страница 32: ...perate compressor at low frequency upto 5min to preheat oil Defrost Function After 35 min heating operation check the defrost condition and if outdoor pipe temp is below 6 C and released from deice operation in case outdoor pipe temp is over 15 C or 7 min cooing mode To deice outdoor heat exchanger in low temp condtion convert operating mode from heating to cooling in this case indoor and outdoor ...

Страница 33: ... operate again Compressor ON Temp Setting Temp 0 5 C Compressor OFF Temp Setting Temp 0 5 C While in compressor running operating with the airflow speed set by the remote control While compressor is off fan operates at low speed regardless of the setting When the dehumidification operation input by the remote control is received the intake air temperature is detected and the setting temp is automa...

Страница 34: ...ode remaining time of sleep timer Chaos Swing While in heating mode operation in order to protect the evaporator pipe of the outdoor unit from freezing reversed to cooling cycle to defrost the evaporator pipe 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 Com...

Страница 35: ...outdoor fans are turned off Defrost operation is controlled by timer and sensing temperature of outdoor pipe The first defrost starts only when the outdoor pipe temperature falls below 6 C after 35 minutes passed from starting of heating operation and more than 4 minutes operation of compressor Defrost ends after 12 minutes passed from starting of defrost operation when the outdoor pipe temperatur...

Страница 36: ...s input It is off when the time set by the timer is reached If the appliance is on pause at the time set by the timer the pause continues When the set time is reached after the on off time is input by the remote control the on off timer operation is carried out according to the set time When the sleep time is reached after 1 2 3 4 5 6 7 0 cancel hr is input by the remote control while in appli anc...

Страница 37: ...he mode on the memory When the appliance operation key is input by the remote control the short beep beep sounds When the appliance pause key is input by the remote control the long beep sounds To operate the appliance 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 When ...

Страница 38: ...ration Cooling model only Plasma Mode Lights up during plasma purification operation option Auto Restart Mode Lights up during if Restart Button is pressed Auto Restart Button In failure of electric power if the button is pressed the unit runs as previous setting operation when power returns Forced Operation Button Operation starts when this button is pressed and stops when you press the button ag...

Страница 39: ...e time 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 AIR CIRCULATION BUTTON Used to circulate the room air without cooling or heating 12 ROOM TEMPERATURE CHECKING BUTTON Used to che...

Страница 40: ...to OFF 1 To remove the Grille from the Chassis Remove the 2 screws of right side panel Remove the right side panel by the arrow The connector can be disconnected by pulling it while pressing the connector s hook Remove the 1 screw for fixing low panel Remove the lower panel by the arrow Take care not to scratch the wall and mat to drop Remove the left side panel Remove the 2 screws Right side pane...

Страница 41: ... remove the Grille pull the lower left and right side of the grille toward you slightly tilted and lift it straight upward Separate the black lead wire from the white connector 2 To remove the sensor housing connector earth conductor and step motor conductor with sensor holder Motor Evaporator and P C B Power Conductor Step Motor Conductor Motor Conductor Sensor Conductor Earth Conductor BLACK WHI...

Страница 42: ...he 3 securing screw Pressing the right side of the discharge grille downward slightly unhook the discharge grille Pull the discharge grille out from the chassis carefully 5 To remove the Evaporator Remove 3 screws securing the evaporator at the left 2EA at the right 1EA Remove 2 screw securing the evaporator clamp Unhook the tab on the right inside of the chassis at the same time slightly pull the...

Страница 43: ...sen the screw securing the cross flow fan to the fan motor do not remove Loosen the screw securing the mount motor Separate the fan motor from the cross flow fan Take care not to drop the motor 7 To remove the Cross Flow Fan Loosen the screw securing the holder bearing Lift up the cross flow fan Screw Fan motor Screw Screw Fan motor Mount motor Holder bearing ...

Страница 44: ...lectronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Wiring Diagram Schematic Diagram Indoor Unit Models 30k Heat Pump Model Outdoor Unit Models 30k Heat Pump Model Schematic Diagram ...

Страница 45: ...0 2 K R 0 1 K D01K CY2 WCN NOISE BD01D D01D C01D IC01D NTC N F01N C02N CY1 ZNR01F BZ01E J 2 2 D03D IC03D S TRANS ZD01D C06D IC02D C 1 0 D C 0 3 D C09D L1 D04D R 0 4 D Z D 0 2 D R05D C07D C08D IC04D R 0 1 A E E P R O M J W 0 4 J 2 1 IC01A R 0 2 A C 0 1 A R 0 3 A R 0 2 L J W 0 6 J20 R 0 6 N R 0 9 H R 0 8 H R 0 7 H C 0 3 H IC01M R 0 7 D R 0 5 N R 0 3 D R 0 7 K J W 0 1 J04 Q01D C 0 1 K J W 0 2 C 0 2 D...

Страница 46: ...C R 0 7 V R 1 1 K R 0 6 K R 2 0 T R 2 2 T C 0 1 N C N _ J I G _ S R 1 0 K C N _ H E A T E R R Y _ P I C E C N _ H O T G A S C N _ 4 W A Y R Y _ F A N B _ L C N _ F A N B C N _ F A N A CN COIL1 R Y _ F A N A _ H R Y _ F A N A _ L R Y _ H E A T E R R Y _ H O T G A S R Y _ F A N B _ H R Y _ 4 W A Y C N _ P I C E T R A N S 1 R Y _ O I L S C 0 9 J R 0 1 V C T R 0 6 V R 0 5 V R 0 4 V R 0 3 V R 0 2 V C N...

Страница 47: ... 47 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Schematic Diagram DISPLAY ASSEMBLY ...

Страница 48: ...Guide Refrigeration Cycle Diagram Troubleshooting Guide Drier Th1 Th2 Th3 LEV Field Piping Gas Field Piping Liquid Accumulator Low Pressure S W Constant Compressor Inverter Compressor Solenoid Valve 1 Solenoid Valve 2 Heat Exchanger Reversing Valve Check Valve 2 Check Valve 1 OUTDOOR UNIT Oil Seperator Refrigerant Flow Cooling Heating ...

Страница 49: ...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...

Страница 50: ...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...

Страница 51: ...e 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 ...

Страница 52: ...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...

Страница 53: ...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...

Страница 54: ...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...

Страница 55: ... 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 ...

Страница 56: ...tion error between in and out 5times OFF 06 Indoor Out Piping sensor error 6times OFF Outdoor Error Error Code Description INV TPS LED 1 Red LED 2 Green Indoor Status 21 DC Peak IPM Fault 2times 1time OFF 22 CT 2 Max CT 2times 2times OFF 23 DC Link Low Volt 2times 3times OFF 24 L_P Heater Sink 2times 4times OFF 25 Low voltage Over voltage 2times 5times OFF 26 DC Comp Position Error 2times 6times O...

Страница 57: ...perature and pressure of refrigeration cycle 1 The suction pressure is usually 4 5 6 0 kg cm2 G at normal condition 2 The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with putty NOTICE NOTICE Temp difference approx 0 C Current less than 80 of rated current Temp difference approx 8 C Current less than 80 of rated current Temp difference less than 8...

Страница 58: ...ing condi tion of Micom is O K Check CN DISP 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 W B Ass y Fuse Noise Filter Power Transformer IC04D etc Trouble 1 NO YES The operation check of the P C B Ass y Procedure 1 The input voltage of power trans former 2 The output ...

Страница 59: ... 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 connector When the detect switch double key inside the remote controller door is fault it is impossible to operate tempe...

Страница 60: ... main power Check the connection of CN MOTOR Check the Fan Motor Check the Fuse AC250V T2A Turn on the main power Check the related circuit of indoor Fan Motor The pin No 42 of micom and the part for driving SSR IC01M Check the related pattern Check the SSR SSR Open Indoor Fan Motor never operate SSR short Indoor Fan Motor always operates in case of ON or OFF The voltage of Pin No 1 orange and 3 b...

Страница 61: ...ector Check the soldering condition on PCB of CN L R1 or CN0L R Connector Check the operating circuit of the vertical louver Confirm that there is DC 12V between pin of CN U D CN L R1 and GND Confirm that there is a soldering short at following terminals Between 33 34 35 and 36 of MICOM Between 37 38 39 and 40 of MICOM Between 4 5 6 and 7 of IC02M Between 1 2 and 3 of IC02M When the louver does no...

Страница 62: ...lay window of indoor units and wired remote controller and LED of outdoor unit control board If more than two troubles occur simultaneously lower number of error code is first displayed After error occurs if error is released error LED is also released simultaneously Indoor Error 10 digit 1 digit Case of error Contents Error code Open Short Outlet pipe sensor 06 Communication Poorly Open Short Ope...

Страница 63: ...unction IPM Fault Current is 14A DC Link volt Is 140V Low High press switch OPEN Abnormal AC volt Input Off Off Off IPM Fault Compressor Over current CT 2 Max Current DC Link Low Volt Low High press AC Low AC High Volt DC Compressor Position PSC Fault DC Link High Volt Discharge Pipe Temp High INV Discharge Pipe Temp High Cons 21 22 23 24 25 26 27 28 32 33 Off Off Off Off Off Off Off Off Off Off O...

Страница 64: ...t sink temp high Open Short CT Circuit D pipe sensor INV open short Air sensor open short Cond Pipe sensor open short Suction pipe sensor open short D pipe sensor Cons open short Over capacity Communication Indoor Outdoor EEPROM check sum Cond Pipe sensor temp high Heat sink sensor temp high Heat sink sensor open short 40 41 44 45 46 47 51 53 60 61 62 65 Off Off Off Off Off Off Off Off Off Off Off...

Страница 65: ...gged Normal resistor 5KΩ at 25 C Unplugged Normal voltage 2 5Vdc at 25 C plugged Normal resistor 5KΩ at 25 C Unplugged Normal voltage 2 5Vdc at 25 C plugged Display code Title Cause of error Check point Normal condition Check Point 1 Unplug the sensor on Indoor unit PCB 2 Estimate the resistance of each sensor 3 If the resistance of the sensor is 10KΩ 5KΩ at 25 C then sensor is normal 4 If the res...

Страница 66: ...B is abnormal Transmission circuit of indoor PCB is abnormal Display code Title Cause of error Check point Normal condition Check Point 1 Check the input power AC230V Outdoor Indoor unit 2 Check the communication wires are correctly connected Adjust the connection of wire Confirm the wire of Live Neutral 3 Check the resistance between communication line and GND Normal Over 2MΩ 4 Check the connecto...

Страница 67: ...t Poor insulation of IPM An instant over current in the U V W phase Comp lock The abnormal connection of U V W Over load condition Overcharging of refrigerant Pipe length Poor insulation of compressor Display code Title Cause of error Check point Normal condition Check Point 1 Check the wire connection U V W 2 Check the load condition Refrigerant Pipe length Adjust the load condition 3 Check the e...

Страница 68: ... current error Malfunction of compressor Blocking of pipe Low voltage input Refrigerant pipe length blocked Malfunction of current detection circuit Open Short The voltage of C01N Is 4 0Vdc 25A Display code Title Cause of error Check point Normal condition Check Point 1 Check the power source 2 Check the fan operation is right 3 Check the current 4 Check the install condition 5 Check the internal ...

Страница 69: ...shooting CH23 CH28 V 23 28 DC Link Low voltage DC Link High voltage DC link volt is 140Vdc DC link volt is 420Vdc Check the power source Check the components Check the power source Check the components Display code Title Cause of error Check point Normal condition Check Point 1 Check the power source 2 Check the components B Diode Reactor PSC Parts ...

Страница 70: ...Input voltage 140Vac 300Vac Check the connection of CN_Press Check the components Check the power source Check the components Display code Title Cause of error Check point Normal condition Check Point CH 24 1 Check the connection of CN_PRESS 2 Check the install condition for over load 3 Check the SVC V V open 4 Check the leakage of refrigerant CH 25 1 Check the power source 2 Check the components ...

Страница 71: ...t IGBT Check the connection of comp wire U V W Malfunction of compressor Check the component of IPM detection parts Check the component of IGBT Check the components Display code Title Cause of error Check point Normal condition Check Point CH 26 1 Check the connection of U V W 2 Check the insulation of IPM part 3 Check the compressor same with CH21 CH 27 1 Check the component of IGBT 2 Check the c...

Страница 72: ...ge pipe sensor for INV Check the install condition for over load Check the leakage of refrigerant Check the SVC V V open Check the discharge pipe sensor for Cons Check the install condition for over load Check the leakage of refrigerant Check the SVC V V open Display code Title Cause of error Check point Normal condition Check Point CH 32 1 Check the install condition for over load 2 Check the SVC...

Страница 73: ...error Normal resistor 200KΩ at 25 C Unplugged Normal voltage 4 5Vdc at 25 C plugged Normal resistor 10KΩ at 25 C Unplugged Normal voltage 2 5Vdc at 25 C plugged Normal resistor 5KΩ at 25 C Unplugged Normal voltage 2 5Vdc at 25 C plugged Normal resistor 5KΩ at 25 C Unplugged Normal voltage 2 5Vdc at 25 C plugged Normal resistor 200KΩ at 25 C Unplugged Normal voltage 4 5Vdc at 25 C plugged Normal re...

Страница 74: ... sum error Check the indoor unit capacity Check the combination table Check the PCB ASM P No Check the poor soldering Display code Title Cause of error Check point Normal condition Check Point CH 51 1 Check the indoor unit capacity CH 60 1 Check the insertion condition of EEPROM 2 Check the poor soldering Model Gross max capacity Max single indoor unit capacity ASUW306MMH0 30k 30k ASUW306MMH1 Trou...

Страница 75: ...sor detected high temp 85 C Check the load condition Check the sensor of Condenser pipe sensor Check the fan is locked Check the sensor of heat sink Display code Title Cause of error Check point Normal condition Check Point CH 61 1 Check the install condition for over load Refrigerant Pipe length Blocked CH 62 1 Check the fan is locked 2 Check the Outdoor temp is very high COMP Frequency Hz Toff C...

Страница 76: ...LGE Internal Use Only Exploded View Exploded View 152313 267110 268711A 35211B W0CZZA 146811A 352150 146811B 152302 152302 359011A 135311 342800A 266090 268711B 263230A 249951 359011B 342800B 346810 733010 135313 135314 135316 135315 159830 354210 131410 147581 Indoor Unit AS W306MMH0 AS W306MMH1 ...

Страница 77: ...nternal Use Only Exploded View 546810A 546810B 559010 554160A 554160B 263230D 263230C 263230B 550140 554031 137213A 447910 430410 435512 349480 435301 437210 548490 552111 552116 435511 649950 268711F 137213B 435300 552204 349600 566000 552203A 552203B 549810 Outdoor Unit AS W306MMH0 AS W306MMH1 558511 ...

Страница 78: ...P NO 3828A20347G July 2008 ...

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