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1. essere 43 4 Gas Charging After Evacuation iS ER nda OI DD d 44 5 Cycle 45 6 Electronic Parts ieee 46 Copyright 2009 LG Electronics Inc right reserved 39 Only for training and service purposes LGE Internal Use Only 3 Trouble Shooting 1 Self diagnosis Functi 1 1 Error Indicator Indoor The function is to self diagnosis air conditioner and express the troubles if there is any trouble Error mark is displayed on display 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 10 digit 1 digit Ex Error 21 DC Peak 2 Times 10 digit 1 2 Indoor Error Error code Description Inv 1 digit LED 10 digit LED Bond 01 Indoor Room sensor error e 1time OFF 02 Indoor in pipe sensor error e 2times OFF 03 Remote controller error e 3times OFF 04 Drain pump error e 4times OFF 05 Communication error indoor and outdoor e 5times OFF 06 Indoor out pipe sensor error e 6times 09 EEPROM error indoor o 9times OFF 10 BLDC motor fan lock indoor e 1Otimes OFF Copyright 2009 LG
2. 27 6 7 darti LEO LUTTE 27 6 8 Two Thermistor COMI 28 6 9 Fiter Sign 30 T Special 31 Installer Setting How to enter installer setting 31 Installer Setting Test Run mode certe rrt ertet bk neta cane 33 Installer Setting Setting Address of Central 34 Installer Setting Group Seti ee ua 35 Installer Setting Dry Contact Mode 36 Installer Setting Option Function Setting 37 7 1 Auto Elevation 38 Copyright 2009 LG Electronics Inc All right reserved 10 Only for training and service purposes LGE Internal Use Only Part 2 Functions Controls Category Function Ceiling Cassette 4 way Ceiling Concealed Duct Ceiling suspended Air supply outlet 4 1 1 Airflow direction control left amp right X Manual Airflow direction control up amp down auto X Auto Auto swing left amp right X Air flow Auto swing up amp down X Airflow steps fan cool h
3. 44 5 Ud 45 b Electronle Parte cuotas e Det eran cei vacua e ntn va aed 46 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only H Part 1 General Information ToSafety PrecaullohS ceca eRe 3 2 Model EAMG UP U XX 6 3 Fa Fla rai v La E M rd ES 8 Copyright 2009 LG Electronics Inc All right reserved 2 Only for training and service purposes LGE Internal Use Only Part 1 General Information 1 Safety Precautions _ To prevent injury to the user or other people and property damage the following instructions must be followed E Incorrect operation due to ignoring instruction will cause harm or damage The seriousness is classified by the follow ing indications AWARNING This symbol indicates the possibility of death or serious injury CAUTION This symbol indicates the possibility of injury or damage to properties only Meanings of symbols used in this manual are as shown below Be sure not do Be sure to follow the instruction Dangerous Voltage 1 1 Cautions in Repair AWARNING Be sure to disconnect the power cable plug from the plug socket before disas sembling the equipment for a repair Internal components and circuit boards are a
4. 1 crt Lt ON Reservation number Turning on time Turning off time Two actions per weekday can be programmed in total 14 actions Copyright 2009 LG Electronics Inc All right reserved 27 Only for training and service purposes LGE Internal Use Only Part 2 Functions Controls 6 8 Two Thermistor Control There may be a significant difference between temperature taken at the installed product indoor temperature Two ther mistor control provides option to control temperature by referring any of the two temperatures With help of the slide switch at the back of the wired remote controller selection of the thermistor for controlling the unit can be One thermistor is in the Indoor unit amp the one is in the LCD wired remote Two Thermistor System If pressing button long for seconds it enters into remote controller setter setup mode If pressing once shortly it enters EX into user setup mode Please press more than 3 seconds for sure If moving to room temperature perception sensor selection menu by pressing button it indicates as picture below Set Thermistor value by pressing button 01 Remote Controller 02 Indoor 03 2TH ax Lite 4 Function Code Thermistor setting 4 Press 55 button to save td 5 Pressing button w
5. Check Flow Chart Check Over load condition Refrigerant leakage Condenser is blocked Outdoor fan is locked Yes Unplug the sensor on Outdoor unit PCB Check the Connector connection Is it normal 3 Yes Estimate the resistance of each sensor Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes No No Correct connection Remove obstruction Change outdoor fan or motor Change refrigerant 67 Is the resistance of the Sensor is No 10kQ at 25 C Change the sensor Yes Plug the sensor on Indoor unit PCB Estimate the Voltage of each sensor 3 Yes Is the voltage of the sensor is 4 5Vdc No 2 5 at 25 C Change the sensor 3 Yes Repair or Change the PCB LGE Internal Use Only 3 Trouble Shooting 6 23 Check code Trouble shooting CH67 code Title Cause of error Check point amp Normal condition Fan motor break down 67 BLDC motor Fan motor amp PCB poor Check the indoor fan motor fan lock Outdoor contact Check the connection status between Obstruction to the fan PCB and fan motor Check Flow Chart Check the indoor fan motor Fan is locked by obstruction Is it normal No Remove obstruction 4 Yes Check the connection status between PCB and fan motor Is it normal E No Correct connection Or re soldering PCB
6. seconds it enters into remote controller setter setup mode If pressing once shortly it enters into user setup mode Please press more than 3 seconds for sure 2 If pressing lt button repeatedly it moves to master slave selection menu as picture below 3 Select Master Slave by pressing button 00 Slave 01 Master maw I Function Code Master Slave value 4 Press button to save LI LI I 5 Pressing button will exit settings mode After setup it automatically gets out of setup mode if there is no button input for 25 seconds When exiting without pressing set button the manipulated value is not reflected Remote controller Function Master Indoor unit operates based on master remote controller at group control Master is set when delivering from the warehouse Slave Setup all remote controllers except one master remote controller to slave at group control Refer to the group control part for details When controlling in groups basic operation settings airflow strength weak medium strong lock setting of the remote controller time settings and other functions may be restricted Copyright 2009 LG Electronics Inc right reserved Only for training and service purposes 35 LGE Internal Use Onl
7. Auto Restart Operation Central Pair system PQCSW320A0E CAC Network control LGAP Simultaneous operation system PQCSB101S0 PQCSC101S0 Function Dry contact X PDI Power Distribution Indicator X PMNFP14A0 P1485 PMNFP14A1 Kit Low Ambient Kit en logic Others Thermistor Notes The Exploded View part has the particular Function table for each model Copyright 2009 LG Electronics Inc All right reserved 12 Only for training and service purposes LGE Internal Use Only Part 2 Functions Controls 2 Air flow Some Models are different with swing width and swing pattern 2 1 Auto swing up amp down By the auto swing key input the upper lower vane automatically operates with the auto swing or it is fixed to the desired direction Cooling Mode Heating Mode r Close Close 30 40 Open Open 2 2 Air flow step Step Discription Air volume is controlled SL LO MED HI SH AUTO by Ui remote controller in cooling mode SL SDN Air volume is controlled SL LO MED HI AUTO by remote LO Low controller in heating mode MED Med HI High SH Super high Auto Chaos wind 2 3 Chaos wind auto wind When Auto step selected and then operated the high medium or low speed of the airflow mode is operated for 2 15 sec randomly by the Chaos Simulation Copyright 2009 LG Electronics Inc All right reserved 13 Only f
8. 10 gt Check connection condition and wiring if power is abnormal 1 Check L N connection condition 2 Check wire disconnection and wiring Reassemble if abnormality found 1 Check inverter PCB assembly U V W connector connection condition 2 Check wire disconnection and wiring 3 Check compressor terminal connection condition bad contact Reassemble if abnormality found Check inverter PCB assembly IPM normality Replace inverter PCB assembly 69 LGE Internal Use Only 3 Trouble Shooting Sensor resistance table Pipe Temp Air Temp B Constant 3977 B Constant 3977 Std Temp 25 Std Temp 25 Resistance 5 Resistance 10 Temp Resistance Volt Temp Resistance Volt 30 102 17 4 714 30 204 35 4 72 25 73 49 4 611 25 146 97 4 62 20 53 55 4 481 20 107 09 4 492 15 39 5 4 322 15 79 4 336 10 29 48 4 131 10 58 95 4 149 5 22 24 3 91 5 44 47 3 931 0 16 95 3 661 0 33 9 3 685 5 13 05 3 389 5 26 09 3 416 10 10 14 3 102 10 20 27 3 131 15 7 94 2 808 15 15 89 2 838 20 6 28 2 515 20 12 55 2 546 25 5 2 232 25 10 2 262 30 4 01 1 965 30 8 03 1 994 35 3 24 1 717 35 6 49 1 745 40 2 64 1 493 40 5 28 1 519 45 2 16 1 293 45 4 32 1 316 50 1 78 1 116 50 3 56 1 137 55 1 48 0 962 55 2 95 0 981 60 1 23 0 828 60 2 46 0 846 65 1 03 0 714
9. Only for training and service purposes 17 LGE Internal Use Only Part 2 Functions Controls 4 2 High Ceiling operation This function is to adjust FAN Airflow rate according to ceilingheight only cassette model If pressing 3 button long for seconds it enters into remote controller setter setup mode If pressing once shortly it enters into user setup mode Please press more than 3 seconds for sure y A5 5 e a If moving to ceiling height selection menu by 5 Le a sc pressing button it indicates as picture J AAS lass below ESC ii ep Lu 3 Select ceiling height value by pressing button 01 Low 02 Standard 03 High X mC I 1 Function Code Thermistor setting 4 Press 25 button to save Ea Lr LI LL 1 5 Pressing button will exit settings mode After setup it automatically gets out of setup mode if there is no button input for 25 seconds When exiting without pressing set button the manipulated value is not reflected Ceiling Height Selection Table Ceiling Height Level Description 01 Low Decrease the indoor airflow rate 1 step from standard level 02 Standard Set the indoor airflow rate as standard level 03 High Increase indoor airflow rate 1 step fr
10. Replace display PCB Be sure to disconnect the power cable plug from the plug socket before disassembling the equipment for a repair Internal components and circuit boards are at main potential when the equipment is connected to the power cables This voltage is extremely dangerous and may cause death or severe injury if come in contact with it Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Copyright 2009 LG Electronics Inc All right reserved 47 Only for training and service purposes LGE Internal Use Only 3 Trouble Shooting 6 3 The Compressor Outdoor Fan are don t operate Turn on the main power Y Operate Cooling Mode by setting the disired temperature of the remote controller is less than one of the Indoor temperature by 1 C at least Y When in air circulation mode compressor outdoor fan is stopped d Check the sensor for Indoor temperature is attatched as close as to be effected by the themperature of Heat Exchange EVA When the sensor circuit for Indoor temperature and connector are in bad connection or are not engaged Compressor Outdoor fan is stopped gt Check the related circuit of 2 12 1 RO1H 1K RO4H 6 2K RO3H 1K CO1H 102 C02H 102 Micom pin No 42 Check the Indoor temperature sensor is disconnected or not about 10K at 25 C ee Check the Relay RY PWR RY START for driving Compre
11. UU21WH U41 UU24WH U41 capacity index of connectable KW 35 6 0 70 indoor units Power supply 10 220 240V 50Hz Tie Chassis us AUUWS366DH1 AUUWA26DH1 AUUWA86DH1 DC Inverter super P UU36WH 031 UU42WH 931 UU48WH 931 Total capacity index of connectable KW 100 125 13 4 indoor units Power supply 19 220 240V 50Hz i ic Chassis 9 4A DC Inverter High Efficiency models 30 DC inverter s per AUUW368DH1 AUUW428DH1 AUUW488DH1 UU37WH 031 UU43WH 931 UU49WH 931 Total capacity index of connectable KW 100 125 13 4 indoor units Power supply 380 415V 50Hz 1 Chassis Copyright 2009 LG Electronics Inc All right reserved 7 Only for training and service purposes LGE Internal Use Only Part 1 General Information 3 Nomenclature Global Model Name 3 1 Indoor units le E Serial Number Functions A Basic Plasma Air Purifier Elevation grille Look Basic Chassis Name Electrical Ratings 6 10 220V 240V 50Hz 8 3 Q 380V 415V 50Hz 10 220V 240V 50 60Hz Capacity Code based on kBtu h units Model Type C Cooling Only H Heat Pump R410A Single A Indoor Unit ATN Single A Ceiling Cassette Type Indoor Unit made in Korea ABN Single A Ceiling Concealed Duct Type Indoor Unit made in Korea UVN Single A Ceiling Suspended Type Indoor Unit made in China 3 2 Decoration panel For ceiling cassette model
12. Over load condition Is the resistance of the Refrigerant leakage i sensor is 200kO No Condenser is blocked Remove obstruction at 25 C Change the sensor Outdoor fan is locked Change outdoor fan or motor Yes Yes Change refrigerant Plug the sensor Unplug the sensor on Indoor unit PCB on Outdoor unit PCB Estimate the Voltage Check the of each sensor Connector connection Yes Is the voltage of the No sensor is No Correct connection 4 5Vdc at 25 C Change the sensor y s Yes Estimate the resistance Repair or Change the PCB of each sensor Copyright 2009 LG Electronics Inc All right reserved 64 Only for training and service purposes LGE Internal Use Only 3 Trouble Shooting 6 20 Check code Trouble shooting CH41 CH44 CH45 CH46 CH47 CH65 pud Title Cause of error Check point amp Normal condition Connector connection error Normal resistor 200KQ at 25 C Unplugged pi Ex Faulty PCB Normal voltage 4 5Vdc at 25 C plugged Faulty sensor Open Short Refer to sensor resistance table Connector connection error Normal resistor 1 at 25 C Unplugged 44 Air sensor Faulty PCB Normal voltage 2 5Vdc at 25 C plugged Faulty sensor Open Short Refer to sensor resistance table 45 Condenser Middle Pipe Sensor Connector connection error Normal resistor at 25 C Unplugged 46 Su
13. connection e error i i Communication Error Connection of wire E Wired remote controller Main PCB Volt DC12V controller Noise interference Connection wire break Check Flow Chart Check the wire connection Open Short Miswirring Is it normal No Correct connection V Or change connection wire Is the soldering state No of connector is normal Re soldering component i Yes Or change the PCB Wired R C Indoor Unit Check the volt of main DC 12V DC 5V RD YL BL RD YL BL Is it normal No Correct connection Or change the PCB 3 Yes 12Vdc 12Vdc Check the installation of wired remote controller V V Noise interference 00 D Is it normal No Adjust the state Check the Volt Check the Volt of installation Copyright 2009 LG Electronics Inc All right reserved 52 Only for training and service purposes LGE Internal Use Only 3 Trouble Shooting 6 8 Check code Trouble shooting CH04 Displ iod Title Cause of error Check point amp Normal condition Raat switch The connection of wire Drain pump Float switch 04 Drain pump a ee Drain pump power input 220V Float switch gt i Drain tube installation ae Indoor unit installation Inclination Check Flow Chart Ch
14. 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 5 Mount the valve stem nuts and the service port nut Use torque wrench to tighten the service port nut to a torque of 1 8 kg m Be sure to check for gas leakage Copyright 2009 LG Electronics Inc All right reserved 44 Only for training and service purposes LGE Internal Use Only 3 Trouble Shooting 5 Cycle Part Trouble analysis 1 Check temperature difference between intake and discharge air and check for the operating current too Case Symptom Supposed Caused Case 1 Temp difference approx 0 C All amount of refrigerant leaked out Current less than 8096 of rated current Check refrigeration cycle Temp difference approx 8 C Refrigerant leakage Clog of refrigeration cycle Case 2 Current less than 80 of rated current Defective Compressor Case 3 Temp difference less than 8 C Excessive amount of refrigerant Current over the rated current Case 4 Temp difference over 8 C Normal Temperature difference between intake and discharge air depends on room air humidity When the room air humidity is rela tivery higher temperature difference is smaller When the room air humidity is relatively lower temperature difference is larger 2 Check temperature and pressure of refrigeration
15. min elapse it increases by 1 C again When the sleep timer mode is input while in cooling cycle mode the airflow speed of the indoor fan is set to the low When the sleep timer mode is input while in heating cycle mode the airflow speed of the indoor fan is set to the medium 6 6 Timer On Off 6 6 1 On Timer Operation When the set time is reached after the time is input by the remote control the appliance starts to operate The timer LED is on when the on timer is input It is off when the time set by the timer is reached If the appliance is operating at the time set by the timer the operation continues While in Fuzzy operation the airflow speed of the indoor fan is automatically selected according to the temperature 6 6 2 Off Timer Operation When the set time is reached after the time is input by the remote control the appliance stops operating The timer LED is on when the off timer is 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 6 7 Weekly Program f necessary an operator can make an On Off reservation of the product for a period of one week On Off schedule of operation for a period of One week No need to turn the unit On Offmanually during working days On Off time is scheduled in micom of the wired remote control Operation Time Table Example H Ne
16. of pipe Low voltage input Refrigerant pipe length blocked Check Flow Chart Check the wire connection U V W Is it normal E No Correct Yes connection Check the resistance of comp No difference at each terminal Is it normal 1 Ph 230V 10 3 Ph 400V 10 Yes Check DC link capacitor Is it normal Refer to belows Yes Check Over load condition No Needs electric work No Change DC link capacitor Or Main PCB Remove obstruction Is it normal E No Change i Yes Compressor Check the electricity leakageof the compressor Refer to comp check table Is it normal 3 Yes Check the input power Outdoor Indoor unit No Change Compressor Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes Overcharging of refrigerant Pipe Length Condenser is blocked Outdoor fan is locked Change PCB link voltage table Change outdoor fan or motor Change refrigerant Model DC Link Voltage Type Non operating Operating AUUW126DH1 PSC DC300V 10 DC380V 10 AUUW186DH1 PFC DC300V 10 DC380V 10 AUUW216DH1 PFC DC300V 10 DC380V 10 1 Phase AUUW246DH1 PFC DC300V 10 DC380V 10 AUUWS366DH1 PFC DC300V 10 DC380V 10 AUUWA26DH1 PFC DC300
17. 0 61 Cond Middle Pipe High 6times 1time OFF 62 Heatsink Error High 6times 2times 65 Heatsink Th Error Open Short 6times 5times 67 BLDC motor fan lock Outdoor 6times 7times 73 PFC Fault Error S W 7times 3times A CAUTION Precaution in Service or Check Even after stopping the operation of product it takes some time to discharge the remaining electricity of the electrolytic capacitor that was charged early Before conducting a checking or repairing job pull out the plug out of the outlet and make sure that the lamp on the control board outdoor unit is off Copyright 2009 LG Electronics Inc All right reserved 41 Only for training and service purposes LGE Internal Use Only 3 Trouble Shooting 2 Pumping Down Purge the air Outdoor unit e Procedure 1 Confirm that both the 2 way and 3 way valves are set to the open position Remove the valve stem caps and confirm that the valve stems are in the raised position Be sure to use a hexagonal wrench to operate the valve stems 2 Operate the unit for 10 to 15 minutes 3 Stop operation and wait for 3 minutes then connect the charge set to the service port of the 3 way valve Connect the charge hose with the push pin to the service port 4 Air purging of the charge hose Open the low pressure valve on the charge
18. 09 LG Electronics Inc right reserved Only for training and service purposes Is it normal 1 Ph 230V 1096 Ph 400V 10 Yes Check DC link capacitor Is it normal Refer to belows Yes Check Over load condition Overcharging of refrigerant Pipe Length Condenser is blocked Outdoor fan is locked Change PCB link voltage table No Needs electric work Ib No Change DC link capacitor Or Main PCB Remove obstruction Change outdoor fan or motor Change refrigerant Model DC Link Voltage Type Non operating Operating AUUW126DH1 PSC DC300V 10 DC380V 10 AUUW186DH1 PFC DC300V 10 DC380V 10 AUUW216DH1 PFC DC300V 10 DC380V 10 1 Phase AUUW246DH1 PFC DC300V 1096 DC380V 10 AUUWS66DH1 PFC DC300V 10 DC380V 10 AUUW426DH1 PFC DC300V 10 DC380V 10 AUUW486DH1 PFC DC300V 10 DC380V 10 AUUW368DH1 PFC DC540V 10 DC680V 10 3 Phase AUUW428DH1 PFC DC540V 10 DC680V 10 AUUW488DH1 PFC DC540V 10 DC680V 10 56 LGE Internal Use Only 6 12 Check code Trouble shooting 22 3 Trouble Shooting piod Title Cause of error Check point amp Normal condition Malfunction of compressor 22 Max C T Over current Blocking
19. 1 487 100 0 69 1 57 150 6 24 1 287 71 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Check of compressor Bi Check resistance of the compressor Comp 3 Trouble Shooting E Check Insulation resistance of the compressor Copper pipe Copyright 2009 LG Electronics Inc right reserved Only for training and service purposes 275 M Resistance Q at 25 C Resistance Q at 20C odel AUUW126DH1 3786 7 m e AUUW186DH1 0 997 0 965 0 98 SIND More AUUW216DH1 0 997 0 965 0 98 V GND More than 2M 1 Phase AUUW246DH1 0 997 0 965 0 98 W GND More than 2M AUUW366DH1 0 52 0 513 0 516 AUUW426DH1 0 52 0 513 0 516 AUUW486DH1 0 52 0 513 0 516 AUUW368DH1 1 183 1 174 1 181 3 Phase AUUW428DH1 1 183 1 174 1 181 AUUW488DH1 1 183 1 174 1 181 LGE Internal Use Only LG P NO MFL62034004 NOVEMBER 2009
20. 65 2 06 0 729 70 0 87 0 615 70 1 74 0 628 75 0 74 0 531 75 1 47 0 542 80 0 63 0 459 80 1 25 0 469 85 0 54 0 397 85 1 07 0 406 90 0 46 0 345 90 0 92 0 353 95 0 4 0 3 95 0 79 0 307 100 0 34 0 262 100 0 68 0 268 70 Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 Trouble Shooting Heatsink Temp D Pipe Temp B Constant 3970 B Constant 3500 Std Temp 25 Std Temp 25 Resistance 10 Resistance 200 Temp Resistance Volt Temp Resistance Volt 30 102 17 4 71 30 2845 99 4 969 25 73 49 4 61 0 585 66 4 851 20 53 55 4 48 5 465 17 4 814 15 39 5 4 32 10 372 49 4 77 10 29 48 4 13 15 300 58 4 717 5 22 24 3 91 20 244 33 4 657 0 16 95 3 66 25 200 4 587 5 26 05 4 73 30 164 79 4 508 10 20 25 4 66 35 136 64 4 418 15 15 87 4 57 40 113 98 4 318 20 12 55 4 47 45 95 62 4 208 25 10 4 35 50 80 65 4 088 30 8 03 4 21 55 68 38 3 958 35 6 49 4 06 60 58 27 3 82 40 5 28 3 89 65 49 88 3 674 45 4 33 3 71 70 42 9 3 522 50 3 57 3 52 75 37 05 3 365 55 2 96 3 32 80 32 14 3 205 60 2 47 3 11 85 27 99 3 043 65 2 07 2 9 90 24 46 2 88 70 1 74 2 69 95 21 46 2 719 75 1 48 2 48 100 18 89 2 561 80 1 26 2 28 110 14 79 2 255 85 1 07 2 09 120 11 72 1 972 90 0 92 1 9 130 9 4 1 716 95 0 8 1 73 140 7 62
21. E X X Electro thermostat X X Others Thermistor PQRSTAO X Note Some of functions are slightly different depending upon models refer individual function table on PART 2 indoor units For ceiling concealed duct models auto run function of dry contact is not applicabe If RF remote control use auto run function of dry contact is applicable Refer to accessory Applied X Not applied No relation Option Model name amp price are different according to options and assembled in factory with main unit Accessory Installed at field ordered and purchased separately by the corresponding model name supplied with separate package Dry contact amp Zone control amp Auto changeover is not available which is connected with synchro When using synchro operation Do not use wireless remote controller Use only one wired remote controller in the indoor units Use central and function controller PQCSB101S0 amp PQCSC101S0 only Copyright 2009 LG Electronics Inc right reserved Only for training and service purposes 11 LGE Internal Use Only Part 2 Functions amp Controls Category Function Remark Defrost Deicing High Pressure Switch Low Pressure Switch Reliability Phase protection Restart Delay 3 minutes Self Diagnosis Soft start Test Function Auto changeover Convenience Night Mode
22. Electronics Inc All right reserved 40 Only for training and service purposes LGE Internal Use Only 3 Trouble Shooting 1 3 Error Indicator Outdoor Outdoor Error Ex Error 21 DC Peack 2 Times 2 Times 2 Times LEDO1G 1 gt gt 1 Sec D i18e D id48ec 1 Time LEDO2G GREEN Outdoor Error LED 1 LED 2 Indoor Error Code Description Inv Red Green status 21 DC Peak IPM Fault 2times 1time 22 CT CT2 2times 2times OFF 23 DC Link Low Volt 2times 3times OFF 24 Pressure switch Heater Sink 2times 4times Q OFF 26 DC Comp Position Error 2times O 6times OFF 27 PSC Fault Error 2times 0 7times OFF 28 DC Link High Volt e 2times 8times OFF 29 Comp Over Current 2times 0 9times OFF 32 D Pipe High Inv e 3times 2times OFF 41 Inv D Pipe Th Error Open Short e 4times itime OFF 44 Outdoor air Th Error Open Short 4times 4times 45 Cond Middle Pipe Th Error Open Short 4times 5times 46 Suction Pipe Th Error Open Short 4times 6times 48 Cond Out Pipe Th Error Open Short 4times 8times OFF 51 Capacity over e 5times 1time OFF 53 Communication Error Indoor Outdoor e 5times 3times OFF 60 EEPROM Error Outdoor 6times
23. LG http biz lgservice com Air Conditioner CAUTION Before Servicing the unit read the safety precautions in General SVC manual Only for authorized service personnel Air Conditioner Service Manual CONTENTS Part 1 General Information dae uon Gao ER EY Ho E OR Cmm RR OS RT dat utu tdg delta c Su 2 1 Safety cT 3 2 Model Line ca oic cena bu pct Ce Cd ud t 6 3 Geist nts PRI ne 8 2 Functions amp Conlrols iuisr ema a Rara V aaa at AGAM RO UD t Rn ARE Rd 10 1 List of Functi ris amp CONTIGS siissccissrctivernsreredeaseermennscnweinetaaenmerasenntadaumemsanmmnmeewinsedsivants 11 CANCERS 13 3 Air pUrifyiNg det 15 4 Installation Functions 16 5 Reliability 5 19 6 Convenience Functions amp Controls 20 SG bea dining 31 Part 3 Trouble Shooting Guide 39 1 Self diagnosis Function emen 40 2 unir m 42 3 Evacuation All amount of refrigerant leaked 43 4 Gas Charging After
24. LGE Internal Use Only 3 Trouble Shooting Outdoor unit Charging cylinder Procedure This is different from previous procedures Because you are charging with liquid refrigerant from the gas side absolutely do not attempt to charge with larger amounts of liquid refrigerant while operating the air conditioner 1 Connect the charge hose to the charging cylinder Connect the charge hose which you dis con nected from the vacuum pump to the valve at the bottom of the cylinder If you are using a gas cylinder also use a scale and reverse the cylinder so that the sys tem can be charged with liquid 4 Immediately disconnect the charge hose from the 3 way valve s service port 2 Purge the air from the charge hose Stopping partway will allow the gas to be dis Open the valve at the bottom of the cylinder charged and press the check valve on the charge set to If the system has been charged with liquid purge the air Be careful of the liquid refriger refrigerant while operating the air conditioner ant The procedure is the same if using a gas turn off the air conditioner before disconnecting cylinder the hose 3 Open the valve Lo side on the charge set and charge the system with liquid refrigerant If the system can not be charged with the spec ified amount of refrigerant it can be charged with a little at a time approximately 150g
25. Sign clear This function is to clear the indicator of indoor filter cleaning 1 Press button repeatedly until the g is flashing When the W is flashing press the 3j to clear this display AR ff sus 5 a ke 8 We GJ Copyright 2009 LG Electronics Inc All right reserved 30 Only for training and service purposes LGE Internal Use Only Part 2 Functions Controls 7 Special Function Installer Setting How to enter installer setting mode 2 Installer setting mode is to set the detail function of the remote controller If the installer setting mode is not set correctly it can cause problems to the product user injury or property dam age This must be set by an certificated installer and any installation or change that is carried out by a non certifi cated person should be responsible for the results In this case free service cannot be provided J 1 If pressing button long for 3 seconds ai it enters into remote controller setter TEATA MANUAL setup mode CLEAR n 2 If pressing once shortly it enters into SA s ese o user setup mode Please press more M gt than 3 seconds for sure When you enter the setting mode initially Function code is displayed on the bottom of the LCD screen m t4 LI ILI 4 Function Code Value Some categories of the me
26. Use Only Part 2 Functions Controls Installer Setting Test Run Mode After installing the product you must run a Test Run mode For details related to this operation refer to the product manual 1 If pressing 3 button long for 3 seconds it enters into remote controller setter setup mode If pressing once shortly it enters into user setup mode Please press more than 3 seconds for sure Please cancel the right and left of wind direction for RAC product 63 1 Function Code Set 2 Setup figure 01 blinks the lower of indication window rh gt 7 Li 3 Press button to start 4 During the test run pressing the below button will exit the test run Select operation temperature up down wind flow control wind direction start stop button 3 18 C cooling High Fan Speed Airflow direction mode will be operated during 18 minutes with ignoring room tem perature After running 18 minutes under test run mode system will automatically turn OFF In case of duct type the Airflow UP DOWN function is not displayed During test run mode receiving signal from wireless remote controller will release this operation If you press any kind of button Test Run mode will be released Copyright 2009 LG Electronics Inc All right reserved 33 Only for tra
27. V 10 DC380V 10 AUUWS366DH1 PFC DC300V 10 DC380V 10 AUUWA26DH1 PFC DC300V 1096 DC380V 10 AUUW486DH1 PFC DC300V 10 DC380V 10 AUUW368DH1 PFC DC540V 10 DC680V 10 3 Phase AUUW428DH1 PFC DC540V 10 DC680V 10 AUUW488DH1 PFC DC540V 10 DC680V 10 58 LGE Internal Use Only 3 Trouble Shooting 6 14 Check code Trouble shooting CH26 CH27 piu Title Cause of error Check point amp Normal condition Check the connection of comp wire U V W DC Compressor ws 26 Malfunction of compressor position detect error Check the component of IPM detection parts 57 PSC Fault Over current at Check the component of IGBT PFC module PFC Fault IGBT PFC module Check the components Check Flow Chart Check the wire connection U V W Is it normal Yes Check the resistance of comp No difference at each terminal E No Correct connection Is it normal E No Change i Yes Compressor Check the electricity leakageof the compressor Refer to comp check table Is it normal 3 Yes Check the input power Outdoor Indoor unit E No Change Compressor Copyright 2009 LG Electronics Inc right reserved Only for training and service purposes Is it normal 1 Ph 230V 10 No 3 Ph 400
28. V 1096 1096 AUUW486DH1 PFC DC300V 10 DC380V 10 AUUW368DH1 PFC DC540V 10 DC680V 10 3 Phase AUUW428DH1 PFC DC540V 10 DC680V 10 AUUW488DH1 PFC DC540V 10 DC680V 10 ve LGE Internal Use Only 3 Trouble Shooting 6 13 Check code Trouble shooting CH23 CH28 piod Title Cause of error Check point amp Normal condition 1ph DC link volt is 23 DC Link 140Vdc Check the power source Low voltage Sph DC link volt is Check the components 250Vdc 1ph DC link volt is DC Link 140Vdc 7 Check the power source 28 High voltage 3ph DC link volt is Check the components 250Vdc 7 Check DC link voltage Check Flow Chart Check the wire connection V W Is it normal No adit Correct wm V Yes connection Is it normal gt No a Change 9 i Yes Compressor Is it normal E No Change Compressor 3 Yes Check the input power Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes Dc link voltage table Model DC Link Voltage Type Non operating Operating AUUW126DH1 PSC DC300V 10 DC380V 10 AUUW186DH1 PFC DC300V 10 DC380V 10 AUUW216DH1 PFC DC300V 10 DC380V 10 1 Phase AUUW246DH1 PFC DC300
29. V 10 Needs electric work Yes Check DC link capacitor Is it normal No Refer to belows Change DC link i Yes capacitor Or Main PCB Check Over load condition Overcharging of refrigerant Pipe Length Condenser is blocked Outdoor fan is locked gt Remove obstruction Change outdoor fan or motor Change refrigerant link voltage table DC Link Voltage Model Type Non operating Operating 1 Phase AUUW126DH1 PSC DC300V 10 DC380V 10 AUUW186DH1 PFC DC300V 10 DC380V 10 AUUW216DH1 PFC DC300V 10 DC380V 10 AUUW246DH1 PFC DC300V 10 DC380V 10 AUUWS366DH1 PFC DC300V 10 DC380V 10 AUUW426DH1 PFC DC300V 10 DC380V 10 AUUW486DH1 PFC DC300V 10 DC380V 10 3 Phase AUUW368DH1 PFC DC540V 10 DC680V 10 AUUW428DH1 PFC DC540V 10 DC680V 10 AUUW488DH1 PFC DC540V 10 DC680V 10 59 LGE Internal Use Only 3 Trouble Shooting 6 15 Check code Trouble shooting CH29 rid Title Cause of error Check point amp Normal condition 1 Overload operation Pipe clogging Covering EEV defect Ref over 29 Inverter compressor over Inverter compressor input 2 oc NE e Insulation damage Motor current current is over 23A 9 b damage 3 Input voltage low 4 ODU inverter PCB assembly da
30. Yes Check the DC Motor signal Is it normal No Change Indoor Motor Yes Repair or Change the PCB ight 2 ics Inc All ri 68 Copyrig 009 LG Electronics Inc All right reserved LGE Internal Use Only Only for training and service purposes 3 Trouble Shooting 6 24 Check code Trouble shooting CH73 pid Title Cause of error Check point amp Normal condition 1 Overload operation Pipe clogging Covering EEV defect Ref overcharge AC input instant over cur Inverter PCB input power 5 ae RM damage 73 rent error current is over 48A peak 9 9 Matter of software 3 Input voltage abnormal L N 4 Power line assemble condition abnormal 5 Inverter PCB assembly damage input current sensing part for 2ms Check Flow Chart Is installation No condition normal Yes No Is input voltage normal Yes No Is AC input Wire connection condition normal Yes Is compressor Wire connection condition normal Yes Is inverter PCB assembly normal Yes Recheck power and installation condition Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 1 Check Pipe clogging distortion 2 Check Covering Indoor Outdoor Unit 3 Check EEV connector assemble condition normal operation 4 Check refrigerant pressure gt Reassemble or manage if abnormality found Check L N phase voltage is 220V
31. ction Pipe sensor Faulty PCB Normal voltage 2 5Vdc at 25 C plugged 48 Condenser Out Pipe Sensor Faulty sensor Open Short Refer to sensor resistance table Heat sink Connector connection error Normal resistor 5 at 25 C Unplugged 65 sensor Faulty PCB Normal voltage 2 5Vdc at 25 C plugged Check Flow Chart Unplug the sensor on Indoor unit PCB Faulty sensor Open Short Refer to sensor resistance table Estimate the Voltage Check the Connector connection Is it normal Yes Estimate the resistance of each sensor E No Correct connection Is the resistance of the Sensor is 200kO 10kO No 5kQ at 25 C Change the sensor Yes Plug the sensor on Indoor unit PCB Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes of each sensor Is the voltage of the sensor is 4 5 2 5Vdc at 25 C Yes Repair or Change the PCB Unplugged No Change the sensor Plugged Check the resistance Check the voltage 65 LGE Internal Use Only 3 Trouble Shooting 6 21 Check code Trouble shooting CH51 CH60 posu Title Cause of error Check point amp Normal condition 51 Over capacit Over capacity Check the indoor unit capacity nob Combination Check the combination table EEPROM Check the connection po
32. cycle in cooling mode Suction pressure Temperature of Compared with Discharge Air Compared Cause of Trouble Description the normal value with the normal valve Hi Defective compressor Current is low igh Defective 4 way reverse valve Excessive amount of High pressure does not quickly Normal refrigerant rise at the beginning of operation Insufficient amount of Current is low Lower Higher refrigerant Leakage Clogging 1 The suction pressure is usually 8 5 9 5kg cm2G Cooling at normal condition R410A 2 The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with putty Be sure to disconnect the power cable plug from the plug socket before disassembling the equipment for a repair Internal components and circuit boards are at main potential when the equipment is connected to the power cables This voltage is extremely dangerous and may cause death or severe injury if come in contact with it Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Copyright 2009 LG Electronics Inc All right reserved 45 Only for training and service purposes LGE Internal Use Only 3 Trouble Shooting 6 Electronic Parts 6 1 The Product doesn t operate at all Turn off the main power and wait for 10 seconds Turn on the main power again Micom is O K No Check the
33. djust the connection of wire Confirm the wire of Live Neutral Signal 1 ont 1 2 N wN s T T T edt at env BR BE Mie y vvv PM MAD TO INDOOR UNIT POWER SUPPLY 19 220 240V 50Hz 15 it normal ub No Correct connection 3 Yes Is connector for communication correctly connected Copyright 2009 LG Electronics Inc All right reserved 55 Only for training and service purposes 3 CHO5 is displayed at indoor unit CH53 is displayed at outdoor unit LGE Internal Use Only 3 Trouble Shooting 6 11 Check code Trouble shooting CH21 Di Title Cause of error Check point amp Normal condition An instant over current in the U V W phase Comp lock Instant over current The abnormal connection of U V W 21 DC Peak Over Rated current Poor insulation of IPM Over load condition Overcharging of refrigerant Pipe length Poor insulation of compressor Check Flow Chart Check the wire connection U V W Is it normal ED No Correct Yes connection Check the resistance of comp No difference at each terminal Is it normal No Change i Yes Compressor Check the electricity leakageof the compressor Refer to comp check table Is it normal Yes Check the input power Outdoor Indoor unit E No Change Compressor Copyright 20
34. eat 4 5 4 3 3 3 4 5 4 Chaos swing X X X Chaos wind auto wind X X Jet cool Power wind X Swirl wind X X Deodorizing filter X X Air purify Plasma air purifier PTPKMO X X 9 Prefilter washable anti fungus Drain pump X E S P control X installation Electric heater operation X X High ceiling operation X X Hot start Reliability Self diagnosis 0 0 0 Soft dry operation Auto changeover Auto cleaning X X X Auto operation artificial intelligence X X X Auto Elevation Grille PTEGMO X Auto restart operation Child lock Convenience Forced operation X Group control Sleep mode X X Timer on off Timer weekly Two thermistor control Standard wired remote controller X X X Wide Character wired remote controller Picto wired remote controller PQRCVSLO PQRCVSLOQW PQRCVSLO PQRCVSLOQW PQRCVSLO PQRCVSLOQW Individual Deluxe wired remote controller PQRCUDSO X X control Simple wired remote controller PQRCUCSOC X X Wired remote controller for hotel use PQRCFCSOC X X Wireless remote controller simple X X X Wireless LCD remote control PQWRHDFO H P PQWRHDFO H P PQWRHDFO H P General central controller Non LGAP X X X Dry contact PQDSB PQDSB PQDSB oe Network Soluation LGAP PDI power distribution indicator X X X PI 485 PMNFP14A0 PMNFP14A0 PMNFP14A0 Special Zone control ABZCA X function kit CTI
35. eck the level of water Float moves top position Is it normal 3 Yes Is the float switch clean Yes Check the wire connection Open Soldered poorly Is it normal 3 Yes Is the resistance of f loat switch normal short Copyright 2009 LG Electronics Inc All right reserved No Check Drain Pump b 11 No Clean float switch Drain pump check Check the wire connection Open Soldered poorly Is it normal E No No Correct connection Correct connection Yes Or re soldering PCB Is the resistance of Drain Pump Normal about 4000 Yes Is the drain pump clean Yes Check drain tube installation No Change the float switch 53 Only for training and service purposes Or re soldering PCB No Change the Drain Pump No Clean drain pump LGE Internal Use Only 3 Trouble Shooting 6 9 Check code Trouble shooting CH09 CH10 pid Title Cause of error Check point amp Normal condition Check sum Indoor Change PCB Fan motor break down BLDC motor Fan motor amp PCB poor Check the indoor fan motor 10 fan lock Indoor contact Check the connection status between Obstruction to the fan PCB and fan motor Check Flow Chart Check the indoor fan motor Fan is locked by obstruction Is it normal Remove obstructio
36. ed 24 Only for training and service purposes LGE Internal Use Only Part 2 Functions amp Controls 6 4 Group Control 6 4 1 Operation Summary Where several products are linked one specific control device can control a specific number of products 6 4 2 Specific Operation Connecting line is linked to each of the indoor equipments for communication A specific control device is connected to each of them and this control device can control the same function Group control function is enabled by cutting an optional jump wire in the wired remote control At this time the main System will not respond in order to prevent data collision While executing group control command use the random data 0 3minutes in the main body of indoor equipment for limiting starting current Control device can control up to 16 indoor equipments Remote Controller Copyright 2009 LG Electronics Inc All right reserved 25 Only for training and service purposes LGE Internal Use Only Part 2 Functions Controls 6 4 3 Group Control You can use a group control operation after connecting the brown and yellow wire of each air conditioner It operates maximum 16 Units by only one Wired Remote Controller and each Unit starts sequentially to prevent overcurrent 1 When installing more than 2 units of air conditioner to one wired remote controller please connect as the right figure If it is not event communication ind
37. ent with temperature of indoor fan ON OFF Heating Mode Operation Details The unit will operate according to the setting by the remote controller and the operation diagram is shown as following Indoor unit Option 36 Pipe temperature Option 34 Option 32 Option 31 Option 30 Option 27 Option 21 Intake Air Temperature Setting Temperature 6 Thermo OFF Option Setting Temperature 4 Thermo ON Option i Setting Indoor FAN i i Middle Fan Speed Compressor Outdoor FAN AWay Valve ON Compressor off interval While the indoor Heat Exchanger temperature is higher than 36 C fan operates at low speed when it becomes lower than 34 C fan stops B For eleminating latent heat loss fan operates at low speed for 20 seconds periodically Copyright 2009 LG Electronics Inc All right reserved 23 Only for training and service purposes LGE Internal Use Only Part 2 Functions amp Controls 6 2 Child Lock Function This function prevents children or others from tampering with the control buttons on the unit It is then controlled by the remote controller All the buttons on indoor display panel will blocked The unit will be controlled only by remote controller The function is used to restrict children to not to use the air conditioner carelessly CL is an abbreviated form of Child Lock Press button repeatedly un
38. ere is a risk of fire or electric shock Install the panel and the cover of control box securely Otherwise there is risk of fire or electric shock due to dust water etc Indoor outdoor wiring connections must be secured tightly and the cable should be routed properly so that there is no force pulling the cable from the connection terminals Improper or loose connections can cause heat generation or fire Do not touch operate or repaire the product with wet hands Hoding the plug by hand when taking out Otherwise there is risk of electric shock or fire ACAUTION Do not turn on the breaker under condition that front panel and cabinet are removed Be sure to earth the air conditioner with an earthing conductor connected to the earthing terminal Conduct repair works after checking that the refrigerating cycle section has cooled down sufficiently Otherwise working on the unit the hot refrigerating cycle section can cause burns Do not tilt the unit when removing panels Otherwise the water inside the unit can spill and wet floor Do not use the welder in a well ventilated place Using the welder in an enclosed room can cause oxygen deficiency Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred gt gt Copyright 2009 LG Electronics Inc All right reserved 4 Only for training and service purpos
39. es LGE Internal Use Only Part 1 General Information 1 2 Inspections after Repair AWARNING Check to see if the power cable plug is not dirty or loose If the plug is dust or loose it can cause an electrical shock or fire Do not use a joined power cable or extension cable or share the same power outlet with other electrical appliances otherwise it can cause an electrical shock excessive heat generation or fire Do not insert hands or other objects through the air inlet or outlet while the prod uct is operating There are sharp and moving parts that could cause personal injury Do not block the inlet or outlet of air flow It may cause product failure oo ACAUTION Check to see if the parts are mounted correctly and wires are connected Improper installation and connections can cause an electric shock or an injury Check the installation platform or frame has corroded Corroded installation plat form or frame can cause the unit to fall resulting in injury Be sure to check the earth wire is correctly connected After the work has finished be sure to do an insulation tset to check the resis tance is 2 Mohm or more between the charge section and the non charge metal section Earth position If the resistance value is low a disaster such as a leak or electric shock is caused at user s side Check the drainage of the indoor unit after the repair If drainage is fa
40. f Functions amp Controls 11 2 SE ms 13 2 1 AUTO Swing GOWN 13 TOW SHG 13 2 3 Chaos Wind Cate WING siia o ect 13 24 Jer Cool Mode 14 2 5 OWI WING OWING Cos CR 14 S 15 3 1 PLASMA Air Purifying ea arredi Prairie 15 4 Installation Functions cinesi n Ehre cipia de cba eta aiios susensealsststariendeseavauss 16 4 1 E S P External Static Pressure Setting 16 4 2 High Ceiling operation osi cess esci itd dn cra a E sani an ES 18 SMIDLI i Y 19 WD nel PNEU ODE 19 5 2 Self diagnosis 19 19 6 Convenience Functions amp 6 20 6 1 Auto Changeover operation 20 6 2 Child LOCK 24 6 3 Forced operati 24 mco 25 6 5 Sleep Timer CODSEAIDI 27 6 6 TIMer OMNO
41. g SSR Q01M 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 Turn on the main power Check the SSR high speed operation by remote control the Indoor Fan Motor is connected The voltage of Pin No 1 orange and 3 black of CN FAN Y About AC 160V over SSR is not damaged Y About AC 50V over Check SSR A Be sure to disconnect the power cable plug from the plug socket before disassembling the equipment for a repair Internal components and circuit boards are at main potential when the equipment is connected to the power cables This voltage is extremely dangerous and may cause death or severe injury if come in contact with it A Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 49 LGE Internal Use Only 3 Trouble Shooting 6 5 When the louver does not operate Confirm that the vertical louver is normally geared with the shaft of Stepping Motor If the regular torque is detected when rotating the vertical louver with hands Normal Check the connecting condition of CN U D CNOL R Connector C
42. heck the soldering condition on PCB of CN U D or CNOL R Connector Check the operating circuit of the vertical louver Confirm that there is DC 12V between pin of CN U D CNOL R and GND Confirm that there is a soldering short at following terminals Between D Gand yof MICOM Between 2 9 9 and of MICOM Between 2 6 and Dof ICO1M Between 6 2and of ICO1M If there are no problems after above checks Confirm the assembly condition that are catching and interfering parts in the link of the vertical louver A Be sure to disconnect the power cable plug from the plug socket before disassembling the equipment for a repair Internal components and circuit boards are at main potential when the equipment is connected to the power cables This voltage is extremely dangerous and may cause death or severe injury if come in contact with it A Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Copyright 2009 LG Electronics Inc All right reserved 50 Only for training and service purposes LGE Internal Use Only 6 6 Check code Trouble shooting CH01 2 CH06 3 Trouble Shooting Faulty sensor Open Short pud Title Cause of error Check point amp Normal condition e Connector connection error Normal resistor 1 25 C Unplugged 01 Indoor air sensor Faulty PCB No
43. ill exit settings mode After setup it automatically gets out of setup mode if there is no button input for 25 seconds When exiting without pressing set button the manipulated value is not reflected Copyright 2009 LG Electronics Inc All right reserved 28 Only for training and service purposes LGE Internal Use Only Part 2 Functions Controls lt Thermistor Table gt Temperature sensor selection Function 01 Remote controller Operation in remote controller temperature sensor 02 Indoor unit Operation in indoor unit temperature sensor Operation of higher temperature by comparing indoor unit s and wired remote Cooling controller s temperature 03 2TH There are products that operate at a lower temperature Heating Operation of lower temperature by comparing indoor unit s and wired remote controller s temperature The function of 2TH has different operation characteristics according to the product CAUTION Select the temperature sensor location after counselling with a customer In case of cooling mode room temperature is controlled by the main body sensor To control the room temperature by a wired remote controller install controller room temp sensor to sense the temperature more accurately Copyright 2009 LG Electronics Inc All right reserved 29 Only for training and service purposes LGE Internal Use Only 2 Functions amp Controls 6 9 Filter
44. ining and service purposes LGE Internal Use Only Part 2 Functions amp Controls Installer Setting Setting Address of Central Control If pressing lt button long for seconds it enters into remote controller setter setup mode If pressing once shortly it enters into user setup mode Please press more than 3 seconds for sure If entering into address setup mode by using button it indicates as picture below 35 B i 5 ig aren y i Set Group No by pressing 0 pus Move to Indoor No setting option by pressing lt lt gt gt button Set Indoor No by pressing button F5 Press button to save Pressing button will exit settings mode After setup it automatically gets out of setup mode if there is no button input for 25 seconds When exiting without pressing set button the manipulated value is not reflected Copyright 2009 LG Electronics Inc All right reserved 34 Only for training and service purposes LGE Internal Use Only Installer Setting Group Setting Part 2 Functions amp Controls This function is only for group control operation Please don t set this function in case of non group control 1 If pressing button long for
45. ke asthma This filter that can be used over and over again by simply washing with water Dust electrode discharge Dust particles lonizer Photo Catalyst Coated Mesh Generating plasma BB EV VVVVVYVNVNV d Copyright 2009 LG Electronics Inc All right reserved 15 Only for training and service purposes LGE Internal Use Only Part 2 Functions Controls 4 Installation Function 4 1 E S P External Static Pressure Setting What is an E S P function This is the function that decides the strength of the wind for each wind level and because this function is to make the installation easier please do not use this function when using the remote controller ACAUTION If you set ESP incorrectly the air conditioner may malfunction This setting must be carried out by a certificated technician This function is used for only Duct product If pressing button long for 3 seconds it enters into remote controller setter setup mode If pressing once shortly it enters into user setup mode Please press more than 3 seconds for sure If entering into ESP setup mode by using i button it indicates as the picture below 090 ESP step Function Code ESP value Function code Select ESP fan step by pressing ESP code v bu
46. mage Check Flow Chart Is installation condition normal 1 Check Pipe clogging distortion 2 Check Covering Indoor Outdoor Unit es 3 Check EEV connector assemble condition normal operation 4 Check refrigerant pressure Yes Y Reassemble or manage if abnormality found 1 Check resistance between each terminal of compressor 0 188 790 N 2 Check insulation resistance between compressor terminal and pipe over 50MQ gt Replace compressor if abnormality found Are the resistance Between each phase and insulation resistance of Inverter compressor normal Yes Y Is compressor Wire connection condition normal 1 Check inverter PCB assembly U V W connector connection condition No 2 Check wire disconnection and wiring 3 Check compressor terminal connection condition bad contact gt Reassemble if abnormality found Yes Y 15 phase is 220V 15 gt Check connection condition and wiring if power is abnormal Yes 4 Is inverter PCB assembly No Check inverter PCB assembly IPM normality normal Replace inverter PCB assembly Yes 1 Recheck power installation condition Copyright 2009 LG Electronics Inc All right reserved 60 Only for training and service purposes LGE Internal Use Only 3 Trouble Shooting 6 16 Check code Trouble shooting CH39 pub Title Cause of error Check point amp Nor
47. mal condition Transmission Error Communication Error 1 Micom defect Circuit defect 39 Between PFC Micom Between PFC Micom 2 Different Micom S W Version INV Micom and INV Micom 3 ODU inverter PCB assembly damage Check Flow Chart Is PFC Micom amp INV Micom No S W Program normal Yes No Is Inverter PCB assembly normal gt Replace inverter PCB assembly Yes Recheck power and installation condition Copyright 2009 LG Electronics Inc All right reserved 61 Only for training and service purposes LGE Internal Use Only 3 Trouble Shooting 6 17 Check code Trouble shooting CH40 Baits Title Cause of error Check point amp Normal condition C T T Malfunction of current detection circuit 40 Internal circuit Open Short The voltage of CO1N Is 4 0Vdc 25 1 Check Flow Chart Check the input power AC230V Outdoor Indoor unit Is it normal 230V 10 m No Correct connection Yes Check CO1N Is it normal 4 0Vdc Yes Check Check TRANS Is it normal E NO Tamura Uurrent Trans Change TRANS 3 Yes Change main PCB Copyright 2009 LG Electronics Inc All right reserved 62 Only for training and service purposes LGE Internal Use Only 3 Trouble Shooting 6 18 Check code Trouble shooting CH52 nd Title Cause of error Check point am
48. n Yes Check the connection status between PCB and fan motor Is it normal ud No Correct connection Or re soldering PCB Yes Check the DC Motor signal Is it normal No Change Indoor Motor Copyright 2009 LG Electronics Inc All right reserved 54 Only for training and service purposes LGE Internal Use Only 3 Trouble Shooting 6 10 Check code Trouble shooting CH05 CH53 piod Title Cause of error Check point amp Normal condition The connector for trans mission is disconnected 10 Connecting Check power input 230V Outdoor Indoor 05 icati den Check connector for transmission Communication The communication line Indoor gt Outdoor is break Check wires are misconnecting 53 Check transmission circuit of outdoor PCB Outdoor PCB is A ae ER Check transmission circuit of indoor PCB abnormal Check of IDU setting DIP SW Indoor PCB is abnormal BUM seung Synchro of IDU is abnormal Check Flow Chart Check the input power AC230V Outdoor Indoor unit Is it normal 230V 10 3 Yes Check the communication wires are correctly connected Is it normal 3 Yes Check the resistance between communication line and GND Normal Over 2MQ No No Needs electric work Is the connection of GND GND1 GND2 Wb No correctly connected Correct connection i Yes Change PCB A
49. n Grille Auto Elevation Grille is automatically down to height of max 3 1 m So it enables to install the Indoor unit JO at high ceiling space And Auto Elevation Grille makes you cleaning the filter easily ELEVATION GRILL REMOTE CONTROLLER Accessory Signal transmitter Ascend Descend Stop Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes Main Components of Lift Grill Lift grill front panel assembly Q Bolts for installation 4 EA P No 3A00255K Instruction manual Remote Controller for lift grill How to Use Remote Controller As for operation of Remote Controller use it by directing the trans mitter part of Remote Controller to the receiver part of front panel directly under front panel Do not drop it down or into water Or else there is worry about trouble failure Do not press hard the Remote Controller button with nail ball point pen or other sharp substance Or else there is worry about trouble failure In case when obstacle such as curtain hides the signal reception part of receiver in between the space interval Remote Controller operation is infeasible 38 LGE Internal Use Only 3 Trouble Shooting B 3 Trouble Shooting 1 Self dlagnosis tia tuin amt kt xdi e e ce nonc n a ec 40 2 PUMP DOW I M HM n 42 3 Evacuation All amount of refrigerant leaked
50. nly Part 2 Functions Controls Installer Setting Optional Function Setting For the optional product such as PLASMA PURIFICATION dehumidifier electric heater and ventilation elevation grill It is possible to set the items are installed or not 1 If pressing button long for 3 Seconds it enters into remote controller setter setup mode If pressing once shortly it enters into user setup mode Please press more than 3 seconds for sure 2 2 If pressing button repeatedly it moves to We the selected option function code as picture below v Function zm Plasma purification Electric heater Dehumidifier Elevation grill Ventilation kit 3 Select existing condition pe of each mode by pressing button 00 not installed vs 01 installed FI C LULI t Foo ee Function Code Existing condition 4 Press button to save 5 Pressing button will exit settings mode 3 After setup it automatically gets out of setup mode if there is no button input for 25 seconds 3 When exiting without pressing set button the manipulated value is not reflected Copyright 2009 LG Electronics Inc All right reserved 37 Only for training and service purposes LGE Internal Use Only Part 2 Functions Controls 7 1 Auto Elevatio
51. nu may not be displayed according to the function of the product or the menu name may be different 7 31 Copyright 2009 LG Electronics Inc All right reserved LGE Internal Use Only Only for training and service purposes Part 2 Functions Controls lt Installer Setting Code Table gt No Function Code Value 1 Test Run 01 01 Set 2 Address Setting 02 00 FF Address lt ESP Step gt lt ESP Value gt 01 VeryLow 0 255 02 Low ICE 3 E S P Value 03 03 Med GIG 155 04 High Function Code ESP step ESP value 05 Very High 01 Remo 4 Thermistor 04 02 Indoor 03 2TH 01 Med 02 5 Ceiling Height 05 03 High 04 Very High 01 V H 02 F H 6 Static Pressure 06 03 V L 04 F L 00 Slave 7 Group Setting 07 01 00 Slave 8 Override Setting 08 OE MEIST 00 9 Dry Contact 09 01 ON Release 3 Min 10 Delay 10 01 Set 01 Variable 11 Zone State 11 02 Fixed Celsius 00 Celsius Me Fahrenheit Switching E 01 Fahrenheit Optimizedionly for U S A 00 Old 13 Zone Type 13 01 New 14 Zone Number 14 02 04 Zone number 15 Plasma 20 16 Electric heater 21 17 Humidifier 22 e kn 18 Elevation Grill 23 19 Ventilation Kit 24 Some contents may not be displayed depending on the product function Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 32 LGE Internal
52. om standard level 04 Very high Increase indoor airflow rate 2 steps from standard level Ceiling height setting is available only for some products Ceiling height of Very high function may not exist depending on the indoor unit Refer to the product manual for more details Copyright 2009 LG Electronics Inc All right reserved 18 Only for training and service purposes LGE Internal Use Only Part 2 Functions Controls 5 Reliability 5 1 Hot start When heating is started the indoor fan is stopped or very slow to prevent the cold air carry out When the temp of heat exchanger reach 30 C model by model indoor fan is started 5 2 Self diagnosis Function The air conditioner installed can self diagnosed its error status and then transmits the result to the central control Therefore a rapid countermeasure against failure of the air conditioner allows easy management and increases the usage life of air conditioner Refer to trouble shooting guide 5 3 Soft dry operation When the dehumidification operation input by the remote control is received the intake air temperature is detected and operation mode is automatically set according to the intake air temperature Intake air Mode Compressor On Off Fan Speed Mode 1 On Setting fan Speed Mode 2 10min On 6min Off Repetition Mode 3 6min On 10min Off Repetition Low Mode 4 Off In rain
53. oor unit set the unit as slave Check for event communication through the product manual Refer to regarding page on how to set the slave GND Signal wire 2 When installing more than 2 wired remote controllers to one air conditioner please connect as the right picture When installing more than 2 units of wired remote controller to one air conditioner set one wired remote controller as master and the others all as slaves as shown in the right picture Refer to Installer setting section on how to set master slave You cannot control the group as shown in the right for some products MASTER When simultaneously connecting 2 sets of wired remote controller CAUTION Be careful not to exchange the color of wires The maximum length of connecting wire should be below 200m 250 on connect ing each units Use a wire more than 0 5mm2 Copyright 2009 LG Electronics Inc All right reserved 26 Only for training and service purposes LGE Internal Use Only Part 2 Functions Controls 6 5 Sleep Timer Operation 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 appliance operation the operation of the appliance stops While the appliance is on pause the sleep timer mode cannot be input While in cooling mode operation 30 min later since the start of the sleep timer the setting temperature increases by 1 C After another 30
54. or training and service purposes LGE Internal Use Only Part 2 Functions amp Controls 2 4 Jet Cool Mode Operation While in heating mode or Fuzzy operation the Jet Cool key cannot be input When it is input while in the other mode operation cooling dehumidification ventilation the Jet Cool mode is operated In the Jet Cool mode the indoor fan is operated super high speed for 30 min at cooling mode operation In the Jet 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 Vane 2 2 5 Swirl wind Swing is the function for comfort cooling heating operation The diagonal two louvers are opened the more larger v CTI than the other louvers After one minute it is opposite Vane 4 Swirl Swing Copyright 2009 LG Electronics Inc All right reserved 14 Only for training and service purposes LGE Internal Use Only Part 2 Functions Controls 3 Air purifying 3 1 PLASMA Air Purifying System The PLASMA Air Purifying System not only removes microscopic contaminants and dust but also removes house mites pollen and pet fur to help prevent allergic diseases li
55. p Normal condition Transmission error Main controller of Master 1 Power cable or transmission cable is not 52 between Inverter gt unit of Master unit can t connected Main PCB receive signal from 2 Defect of outdoor Main fuse Noise Filter inverter controller 3 Defect of outdoor Main inverter PCB Error diagnosis and countermeasure flow chart Is noise filter or fuse normal Replace inverter compressor PCB Re connect transmission cable Is transmission LED Yellow of inverter compressor PCB on Yes Replace noise filter or fuse Is transmission cable connected correctly Yes Is MAIN PCB normal Yes Replace MAIN PCB Replace inverter compressor PCB Check Point Check the Transmission connector and LED Main amp Inverter 42 48 60k gt Inverter PCB gt lt MAIN PCB gt Copyright 2009 LG Electronics Inc All right reserved 63 Only for training and service purposes LGE Internal Use Only 3 Trouble Shooting 6 19 Check code Trouble shooting CH32 CH33 pid Title Cause of error Check point amp Normal condition Check the discharge pipe sensor for INV D pipe Inverter Disch Check the install condition for over load 32 temp high Check the leakage of refrigerant 105 C Mniverter temps high Check the SVC V V open Refer to sensor resistance table Check Flow Chart Check
56. rmal voltage 2 5Vdc at 25 C Plugged Faulty sensor Open Short Refer to sensor resistance table Connector connection error Normal resistor 5 at 25 C Unplugged 02 Indoor inlet pipe sensor Faulty PCB Normal voltage 2 5Vdc at 25 C Plugged Refer to sensor resistance table 06 Indoor outlet pipe sensor Faulty PCB Connector connection error Faulty sensor Open Short Normal resistor at 25 C Unplugged Normal voltage 2 5Vdc at 25 C Plugged Refer to sensor resistance table Check Flow Chart Unplug the sensor on Indoor unit PCB Check the Connector connection Is it normal I No Correct connection Yes Estimate the resistance of each sensor Is the resistance of the sensor 100 No 5kQ at 25 C Correct connection Yes Plug the sensor on Indoor unit PCB Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes Estimate the Voltage of each sensor Is the voltage of the sensor 2 5Vdc at 25 C Yes Repair or Change the PCB Unplugged 10kQ uS Q Correct connection Plugged Check the resistance Check the voltage 51 LGE Internal Use Only 3 Trouble Shooting 6 7 Check code Trouble shooting Title Cause of error Check point amp Normal condition Connector
57. rt 60 Check sum Check sunn emor Check the poor soldering Check Flow Chart CH51 Check the indoor unit combination Check the outdoor unit max combination Check Flow Chart CH60 Is it normal No Correct connection Yes Check PCB Contents Case of error 01 Air sensor open short Open Short Off 02 Inlet pipe sensor Open Short Off 03 Communication Indoor lt gt Wired R Control Communication Poorly Off 04 Drain pump Float switch Float switch Open Off 05 Communication Indoor gt Outdoor Communication Poorly Off 06 Outlet pipe sensor Open Short Off 07 Different operation mode Different operation mode Off Copyright 2009 LG Electronics Inc All right reserved 66 Only for training and service purposes LGE Internal Use Only 3 Trouble Shooting 6 22 Check code Trouble shooting CH61 CH62 piu Title Cause of error Check point amp Normal condition Condenser condenser pipe Check the load condition 61 pipe sensor sensordetected high Check the sensor of Condenser pipe sensor temp high temp 65 C Normal resistor 5 at 25 C Unplugged Normal voltage 2 5Vdc at 25 C Plugged Heat sink sensor e heat sink sensor Check the load condition 62 temp high detected high temp Check the sensor of heat sink 85 C Normal resistor 10KQ at 25 C Unplugged Normal voltage 2 5Vdc at 25 C Plugged
58. s 3 3 Outdoor units gt x H Copyright 2009 LG Electronics Inc right reserved Only for training and service purposes Functions A Basic C For Indoor Unit with Plasma Air Purifier Indoor Unit Chassis Model Type Cooling Only H Heat Pump U Single A Decoration Panel of Ceiling Cassette Type Indoor Unit High COP Series Serial Number Electric Standard Phase Volts Freq 6 1 220V 240V 50Hz 8 30 380V 415V 50Hz Capacity code Model Type Cooling Only H Heat Pump W Inverter Heat Pump R410A Single A Outdoor Unit 8 LGE Internal Use Only Europe Model Name 3 4 Indoor units Decoration panel EE e 3 5 Outdoor units Le Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes Part 1 General Information High COP Capacity code Type T Cassette Duct V Convertible Model Type U Single A Model Function Key C Plasma filter model A Basic model Indoor unit chassis Type of indoor unit C Cooling Only Heat Pump U Single A PT Decoration panel for Cassette model High COP Type of Air conditioner W Inverter No mark for non inverter Capacity code Type U Outdoor Units Model Type U Single A Model LGE Internal Use Only 2 Functions amp Controls B Part 2 Functions amp Controls Te List o
59. set slightly to air purge from the charge hose 5 Set the 2 way valve to the closed position Copyright 2009 LG Electronics Inc All right reserved Only for training and service purposes 6 Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 1kg cm g 7 Immediately set the 3 way valve to the closed position Do this quickly so that the gauge ends up indi cating to 5kg cm 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 wrench to tighten the service port nut to a torque of 1 8 kg m Be sure to check for gas leakage 42 LGE Internal Use Only 3 Trouble Shooting 3 Evacuation All amc Liquid side Outdoor unit e Procedure 1 Connect the vacuum pump to the center hose 3 Close the valve Lo side on the charge set of charge set center hose turn off the vacuum pump and confirm that the gauge needle does not move approxima 2 Evacuation for approximately one hour tely 5 minutes after turning off the vacuum Confirm that the gauge needle has moved pump toward 0 8Torr 4 Disconnect the charge hose from the vacuum pump Vacuum pump oil If the vacuum pump oil becomes dirty or depleted replenish as needed Copyright 2009 LG Electronics Inc All right reserved 43 Only for training and service purposes
60. ssor Check the voltage between brown and blue cable of terminal to connect the Outdoor About AC220V 240V Check the related circuit of relay in Outdoor PCB Ass y Check Point Comp ON Comp OFF Between Micom No 19 and GND DC 5V DC OV Between ICO1M No 10 DC 1V DC 12V GND Y Turn off main power Check the electrical wiring diagram of Outdoor side Check the open or short of connecting wires between Indoor and Outdoor Be sure to disconnect the power cable plug from the plug socket before disassembling the equipment for a repair Internal components and circuit boards are at main potential when the equipment is connected to the power cables This voltage is extremely dangerous and may cause death or severe injury if come in contact with it Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Copyright 2009 LG Electronics Inc All right reserved 48 Only for training and service purposes LGE Internal Use Only 6 4 When indoor Fan does not operate Turn off main power Check the connection of CN FAN Check the Fan Motor Check the Fuse AC250V Check the related circuit of indoor Fan Motor 3 Trouble Shooting The pin No 68 of micom and the for drivin
61. t main potential when the equipment is connected to the power cables This volt age is extremely dangerous and may cause death or severe injury if come in con tact with it Do not touch the discharging refrigerant gas during the repair work The discharging refrigerant gas The refrigerant gas can cause frostbite Release the refrigerant gas completely at a well ventilated place first Otherwise when the pipe is disconnected refrigerant gas or refrigerating machine oil discharges and it Can cause injury When the refrigerant gas leaks during work execute ventilation If the refrigerant gas touches to a fire poisonous gas generates A case of leakage of the refriger ant and the closed room full with gas is dangerous because a shortage of oxygen occurs Be sure to execute ventilation When removing the front panel or cabinet execute short circuit and discharge between high voltage capacitor terminals If discharge is not executed an electric shock is caused by high voltage resulted in a death or injury Do not turn the air conditioner ON or OFF by plugging or unplugging the power plug There is risk of fire or electrical shock OP gt Copyright 2009 LG Electronics Inc All right reserved 3 Only for training and service purposes LGE Internal Use Only Part 1 General Information Do not use a defective or underrated circuit breaker Use the correctly rated breaker and fuse Otherwise th
62. til the amp is flashing If moving to setup icon area by using button setup icon blinks and child lock function is Ej setup if pressing button at _ that time Y G3 3 When cancelling lock function if moving to icon by pressing button and then pressing 225 button child lock function is cancelled Press button to exit After setup it automatically gets out of setup mode if there is no button input for 25 seconds When exiting without pressing set button the manipulated value is not reflected 6 3 Forced operation To operate the appliance by force in case when the remote control is lost the forced operation selection switch is on the main unit of the appliance and operate the appliance in the standard conditions The operating condition is set according to the outdoor temp and intake air temperature as follows Setting speed of Indoor temp Operating Mode Setting temp over 24 C Cooling 22 C 21 24 C Healthy Dehumidification 22 C High speed below 21 C Heating 22 C The unit select the last operation mode in 3 hours Operating procedures when the remote control can t be used is as follows The operation will be started if the ON OFF button is pressed If you want to stop operation re press the button Copyright 2009 LG Electronics Inc All right reserv
63. tions Compressors 3 minutes time delay After compressor off the compressor can restart minimum 3 minutes later Copyright 2009 LG Electronics Inc All right reserved 21 Only for training and service purposes LGE Internal Use Only 2 Functions amp Controls 6 1 2 Heating Mode Thermo ee E a 4 Setting i Temp 77 INV High Comp OFF i High 4 Comp OFF Frequency Lo Comp ON Comp OFF i Comp OFF Operating frequency of compressor depend on the load condition compressor operates at some frequency the operating frequency of compressor cannot be changed within 90 sec ondas Condition of compressor turned off When intake air temperature reaches 6 C above the setting temperature Condition of compressor turned on When intake air temperature reaches 4 C above the setting temperature Condition of indoor fan turned off Indoor pipe temp 27 C Option e While in defrost control between the indoor and outdoor fans are turned off Compressor 3 minutes delay After compressor off the compressor can restart minimum 3 minutes later NOTE Some Models are different by temperature of thermo ON OFF Copyright 2009 LG Electronics Inc All right reserved 22 Only for training and service purposes LGE Internal Use Only Part 2 Functions Controls Some Models are differ
64. tton 01 very low 02 low 03 medium 04 high 05 power x 530 1 e ESP value Move to ESP value setting by pressing button n 000 when delivering from the warehouse 5 Press button to setup ESP value It is possible to setup ESP AF value from 1 to 255 and 1 is lt gt the smallest and 255 is the biggest Copyright 2009 LG Electronics Inc All right reserved 16 Only for training and service purposes LGE Internal Use Only N 1 1 FLOW 1I 1 3 B 1 3 l E Function code ESP code ESP value Part 2 Functions amp Controls Select ESP fan step again by using button and setup ESP value as No 4 and 5 that corresponds each wind flow Press button to save Press button to exit M After setup it automatically gets out of setup mode if there is no button input for 25 seconds When exiting without pressing set MO button the manipulated value is not reflected Please be careful not to change the ESP value for each fan step does not work to setup ESP value for very low power step for some products ESP value is available for specific range belongs to the product Copyright 2009 LG Electronics Inc right reserved
65. ulty the water to enter the room and wet floor gt Copyright 2009 LG Electronics Inc All right reserved 5 Only for training and service purposes LGE Internal Use Only Part 1 General Information 2 Model line up 2 1 Indoor units Model Name Category Chassis Capacity 3 5 5 0 6 0 7 0 10 0 12 5 13 4 ATNH12GPLE1 ATNH18GPLE1 UT12H 1 UT18H NP1 Ceiling i ATNH21GNLE1 ATNH24GNLE1 cassette E EU UT21H NN1 UT24H NN1 zn ATNH36GMLE1 ATNH42GMLE1 ATNH48GMLE1 UT36H NM1 UT42H 1 UT48H NM1 ABNH18GGLA1 ABNH21GGLA1 ABNH24GGLA1 Ceiling UB18H NG1 UB21H NG1 UB24H concealed a duct _ ABNH36GRLA1 ABNH42GRLA1 ABNH48GRLA1 UB36H NR1 UB42H NR1 UB48H NR1 yy UVNH12GJLA1 UVNH18GJLA1 UV12H NJ1 UV18H NJ1 Ceiling VK UVNH21GKLA1 UVNH24GKLA1 suspended UV21H NK1 UV24H NK1 Wr UVNH36GLLA1 UVNH42GLLA1 UVNH48GLLA1 UV36H NL1 UV42H NL1 UV48H Copyright 2009 LG Electronics Inc right reserved Only for training and service purposes LGE Internal Use Only 2 2 Outdoor units DC Inverter High Efficiency models 10 Part 1 General Information DC Invert AUUW126DH1 AUUW186DH1 AUUW216DH1 AUUW246DH1 UU12WH UE1 UU18WH UE1
66. voltage of power supply and check for the following The voltage of main power supply The voltage applied to the unit The connecting method of Indoor Outdoor connecting cable each color The P C B Assembly Fuse Noise Filter Power Module Bridge Diode etc Primarily the operating condition of A Beeping sound is made from the indoor unit Check Remote controller amp Receiver Check Connector of Indoor PCB The operation check of the Indoor P C B Ass y 2 The output voltage of power mod 2 12V ule Copyright 2009 LG Electronics Inc All right reserved 46 Only for training and service purposes Procedure Specification Remedy 1 The input voltage of power mod 1 AC230V 30V 1 Check the power outlet ule Check the rated voltage 2 Replace P C B Ass y LGE Internal Use Only 3 Trouble Shooting 6 2 The Product doesn t operate with the remote controller Turn on the main power A Beeping sound is made from the indoor unit Refer to 10 1 Yes Check the voltage of power Is it possible to turn on the unit by ON OFF button on display Yes Is the remote controller When the mark 4 is displayed working properly in LCD screen replace battery Yes Check the contact point of CN DISP 1 2 connector amp Re connector Check display P C B Assembly Voltage between CN DISP1 should be DC 5V If problem still persists
67. y Part 2 Functions amp Controls Installer Setting Dry Contact Mode Setting This function allows the Dry contact indoor unit operate under Auto Run mode or Manual mode with remote controller If pressing button long for 3 seconds it enters into remote controller setter setup mode If pressing once shortly it enters into user setup mode Please press more than 3 seconds for sure 2 If pressing 5 button repeatedly it moves to m remote controller dry contact mode setup D 6 We E menu as picture below M 3 Select Dry contact setting by pressing button 00 Automatic 01 manual or Function Code Contact setting value 4 Press button to save mO Lt 5 Pressing button will exit settings mode 3 After setup it automatically gets out of setup mode if there is no button input for 25 seconds When exiting without pressing set button the manipulated value is not reflected gt What is Dry Contact Like hotel card key and body perception sensor it is the signal of the point of contact when using air conditioner by inter locking Please refer to dry contact manual for more details Copyright 2009 LG Electronics Inc All right reserved 36 Only for training and service purposes LGE Internal Use O
68. y season or high humidity climate it is pissible to operate simultaneously dehumidifier and cooling mode to remove humidity effectively Copyright 2009 LG Electronics Inc All right reserved 19 Only for training and service purposes LGE Internal Use Only Part 2 Functions Controls 6 Convenience Function 6 1 Auto changeover operation The air conditioner changes the operation mode automatically to keep indoor temperature When room temperature vary over 2 C with respect to setting temperature air conditioner keeps the room tempera ture in 2 with respect to setting temperature by auto change mode 44 C Switching point 2 Heating thermo off 0 5 C SET Temp 0 5 C Cooling thermo off 2 C Switching point Cooling Heating operation Cooling operation operation Copyright 2009 LG Electronics Inc All right reserved 20 Only for training and service purposes LGE Internal Use Only Part 2 Functions Controls Cooling amp heating Opeattions 6 1 1 Cooling Mode o Thermo 40 5 C ON Setting Temp 0 5 Thermo OFF INV Comp High 4 L Fe ig OW Comp OFF High lt Low Constant Comp Comp ON Comp OFF Comp ON Operating frequency of compressor depends on the load condition If the compressor operates at some frequency the operating frequency of compressor cannot be changed within 90 seconds not emergency condi

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