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Universal Air Conditioner SVC MANUAL(Exploded - LG Duct-Free

1. MICOM TMPB7CH46 i93 il ROIT CN LEV OPTION RY COMPCA 1 RY HEA RY 4WAY uaan Copyright 2010 LG Electronics Inc All right reserved 49 Only for training and service purposes LGE Internal Use Only Schematic Diagram P No 6871A20999A PCB ASSEMBLY MAIN Top View HWS 886868 00 00 O 8888 SWOTOM VO e688 BAR 66686 CN DC DC 8888 CN MOTOR2 88868 CN_MOTORI Q85 N ar auel db Gb Taa Gi 50 Copyright 2010 LG Electronics Inc All right reserved 50 Only for training and service purposes LGE Internal Use Only OUTDOOR UNIT P W B ASSEMBLY E P No 6871A20901C PCB ASSEMBLY MAIN Top View EB Es m dE S ZNROM CN TAB NPOWER e o e i e i e ETE eda mA i AWO NA 2d i E GRDE r
2. Applied to Heating Models NOTE Please ensure GCSC since the replacement parts may be changed demending upon the buyer s request Please check the correct parts in View RPL Replacement Part List on GCSC GCSC Website http biz Lgservice com Copyright 2010 LG Electronics Inc All right reserved 75 Only for training and service purposes LGE Internal Use Only LG 1 Please call the installing contractor of your product as warranty service will be provided by them ge 2 If you have service issues that have not been addressed by the contractor please call 1 888 865 3026 CANADA Service call Number 888 LG Canada 888 542 2623 P NO 3828A20926C FEBRUARY 2010
3. Model AS H091F2G1 AS H121F2G1 REIS LAO96HNP LA126HNP Cooling Capacity kW 2 9 3 37 Min Rating Max Btu h 9 900 11 500 Heating Capacity kW 2 9 3 22 Min Rating Max Btu h 9 900 11 000 Power Input Cooling Heating W 1 100 1 070 1 150 1 100 Running Current Cooling Heating A 9 4 9 4 10 10 Starting Current Cooling Heating A 57 0 57 0 57 0 57 0 EER WW 2 63 2 93 Btuh W 9 10 COP WW 2 71 2 93 Power Supply QIVIHz 1 115 60 1 115 60 Power Factor 96 90 7 95 7 Air Flow Rate Indoor Max m min cfm 9 3 330 9 3 330 Outdoor Max m min cfm 25 883 25 883 Moisture Removal l h 1 4 1 4 Indoor H M L dB A 3 43 35 29 43 35 29 SARI Outdoor Max dB A 3 48 48 Refrigerant amp Charge at 7 5m gloz R410A 900 31 8 R410A 900 31 8 Type 5 notary 5 otay Model K113CAA K113CAA Compressor Motor Type PSC PSC Oil Type FVC68D PVE FVC68D PVE Oil Charge cc 330 330 O L P Name MRA12053 12027 MRA12053 12027 Type Turbo Fan Turbo Fan Fan Indoor Motor Output W 24 24 Type Propeller Propeller Fan outdoor Motor Type AC Induction AC Induction Motor Output W 27 27 Circuit Breaker A 20 20 Power Supply Cable No mm 3 2 5 3 2 5 Power and Transmission Cable No mm 4No mm 4 0 75 4 0 75 Piping Liquid Side mm in 6 35 1 4 6 35 1 4 Connections Gas Side mm in 12 7 1 2 12 7 1 2 Drain Hose 0 D 1 D mm in 21 5 16 0 85 0 63 21 5 16 0 85 0 63 vuy mm
4. anioo 409 TEA A wos 90 sar HOLONNO m ZZ mo io oz osla aL osta T eo x 601 JN oen al C Eti 3 To 209 TAF IRENE zuuowwo j 1 amoo 850 810 7 sg 8js AE TH i Ho Ne S33 u 22 E 238 Ls fe g 9 m 28 238 B3 Ll d g i 32 i Copyright 2010 LG Electronics Inc All right reserved 48 Only for training and service purposes LGE Internal Use Only Schematic Diagram Heat Pump Series Cooling Only Ser 5 S c B z 3 x B 5 B E E 5 amp 5 ae i i ge a gr i TUR ET E RY COMPCAD
5. HaiMOd 3854A20379R Copyright 2010 LG Electronics Inc All right reserved 54 Only for training and service purposes LGE Internal Use Only Troubleshooting Guide H Troubleshooting Guide Refrigeration Cycle D ET 1 Cooling Only Models INDOOR UNIT OUTDOOR UNIT LIQUID SIDE CAPILLARY TUBE HEAT HEAT EXCHANGE EXCHANGE EVAPORATOR CONDENSER 2 Cooling amp Heating Models INDOOR UNIT OUTDOOR UNIT a CHECK VALVE pg 000 CAPILLARY TUBE LIQUID SIDE HEAT EXCHANGE EXCHANGE 7 EVAPORATOR CONDENSER 1 ERAS Y J 0 R Kp REVERSING e VALVE i 3 ane COOLING lt HEATING Copyright 2010 LG Electronics Inc All right reserved 55 Only for training and service purposes LGE Internal Use Only Troubleshooting Guide Piping Length and Elevation Capacity Pipe Size Standard Max Max bea Btu h Suction Evap Length m ft Elevation m ft length m ft g m oz ft 9k 12k O127mm i 2 6 35mm 1 4 7 5 25 7 5 25 15 49 20 0 22 Indoor unit Outdoor unit Outdoor unit Peza Oil trap Ww Indoor unit Indoor unit Outdoor unit If piping length is more than 16 4ft 5m CAUTION Capacity is based on standard length and maximum allowance length is on the basis of reliability Oil trap should be inst
6. sssesssssseeeeeeeen nennen nennt nene trente tr tette ete inei tinent ttn ne 55 Pipe length and theelevatlOn cisci rie te tercer re cere cede ceri cer de e eL d de E Ce ra De e Ce E Ee e 56 ETAT S 57 occu cM 63 Electronic PANS aesti Er PEORES re Eee E Oe ERE REEF Pe ede 64 Exploded VIEW aada aia aaaea decd usury cay Eaa Raina HHE haa aO OI a aa Taa araa e 73 Copyright 2010 LG Electronics Inc All right reserved 2 Only for training and service purposes LGE Internal Use Only Safety Precautions E 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 following indications AWARNING This symbol indicates the possibility of death or serious injury ACAUTION This symbol indicates the possibility of injury or damage to properties only E Meanings of symbols used in this manual are as shown below D Be sure not to do l Qo Be sure to follow the instruction A WARNING B installation Do not use damaged power For electrical work contact the Always use the power plug and cords plugs or a loose socket dealer seller a qualified socket with the ground terminal electrician or an Authorized Service Center There is risk of fire or electri
7. 26 LGE Internal Use Only Connecting the cable between indoor unit and outdoor unit me CAUTION After the confirmation of the above conditions prepare the wiring as follows 1 Never fail to have an individual power circuit specifically for the air conditioner As for the method of wiring be guided by the circuit diagram 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 capacity is sufficient 5 Confirm that the starting voltage is maintained at more than 90 percent of the rated voltage marked on the name plate 6 Confirm that the cable thickness is as specified in the power source specification Particularly note the relation between cable length and thickness 7 Always install an GFCI circuit breaker in a wet or moist area 8 The following would be caused by voltage drop Vibration of a magnetic switch which will damage the contact point open fuse disturbance of the normal function of the overload 9 The means for disconnection from a power supply shall be incorporated in the fixed wiring and have an air gap contact separation of at least 3mm 0 12in in each
8. 2 Measure the distance between the indoor and the outdoor unit 3 Cut the pipes a little longer than measured distance 4 Cut the cable 4 9ft 1 5m longer than the pipe length Removing burrs 1 Completely remove all burrs from the cut cross section of pipe tube 2 Put the end of the copper tube pipe in a downward direction as you remove burrs in order to avoid dropping burrs into the tubing Putting nut on Remove flare nuts attached to indoor and outdoor unit then put them on pipe tube having completed burr removal not possible to put them on after flaring work Flaring work 1 Firmly hold copper pipe in a die in the dimension shown in the table below 2 Carry out flaring work with the flaring tool Outside diameter A mm inch mm 6 35 1 4 1 1 1 3 9 52 3 8 1 5 1 7 012 7 1 2 1 6 1 8 015 88 5 8 1 6 1 8 19 05 3 4 1 9 2 1 Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes O x po Slanted U Rough pipe o ante neven Roug Pipe Reamer NO Point down z N Flare nut Copper tube Ciam Mandle Red arrow mark 20 LGE Internal Use Only Flaring work and connection of pipin Check 1 Compare the flared work with the figure by Smooth all round 2 If a flared section is defective cut it off and do flaring D Falun E work again Improper flaring MOON Inclin
9. Test running Z TEST RUNNING 1 Check that all tubing and wiring are properly connected 2 Check that the gas and liquid side service valves are fully open Prepare remote controller 1 Remove the battery cover by pulling it according to the arrow direction 2 Insert new batteries making sure that the and of battery are installed correctly 3 Reattach the cover by pushing it back into position Use 2 AAA 1 5volt batteries Do not use rechargeable batteries Remove the batteries from the remote controller if the system is not used for a long time Settlement of outdoor unit 1 Anchor the outdoor unit with a bolt and nut 0 39 10mm tightly and horizontally on a concrete or rigid mount 2 When installing on the wall roof or rooftop anchor the mounting base securely with a nail or wire assuming the influence of wind and earthquake 3 If the vibration of the unit is transmitted to the hose secure the unit with an anti vibration rubber Evaluation of the performance Operate the unit for 15 20 minutes then check the system refrigerant charge 1 Measure the pressure of the gas side service valve 2 Measure the temperature of the intake and discharge of air 3 Ensure the difference between the intake temperature and the discharge is more than 46 4 F 8 C 4 For reference the gas side pressure of optimum condition is as below Cooling The air conditioner is now ready for use
10. AN Pull the cover control out from the control box f S SSS and disconnect other wires S S Remove securing screws Pull the control box out from the chassis carefully Communication Connector Step Motro Connector Front Panel Connector L S BTS AMI AD IU 4 LACK LEED Copyright 2010 LG Electronics Inc All right reserved 46 Only for training and service purposes LGE Internal Use Only Disassembly 3 To remove the Evaporator Remove hole tubing holde Remove 2 screws securing the evaporator Pull the evaporator out from the chassis carefully Air Guide 4 Before removing the Turbo Fan Remove the securing screws from the chassis Pull the pipe top cover and the air guide 5 To remove the Motor K Bracket Remove the securing bolt from the motor shaft Pull the fan out from the motor shaft Turbo Fan Remove 4 screws securing motor mount from the chassis and lift up the motor mount and the bracket Copyright 2010 LG Electronics Inc All right reserved 47 Only for training and service purposes LGE Internal Use Only Schematic Diagram K Schematic Diagram
11. E Installation Read carefully and then follow step by step Installation Parts Installation guide map Installation Type A screw and plastic anchor SEIS Ahhh Type B screw Remote control holder Screw driver Figure Ohmmeter Electric drill Hexagonal wrench Measuring tape Knife Ammeter Hole core drill Spanner Leak detector Thermometer Horizontal meter Torque wrench Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 13 Flaring tool set LGE Internal Use Only Installation Installation Map Installation parts you should purchase x Copyright 2010 LG Electronics Inc All right reserved More than 20cm 1 PEE More than J 19 6 b0cm Left and right are identical Sleeve CX Bushing Sleeve gt Putty Gum Type Sealer x Bend the pipe as close as possible on the wall but be careful so that it may not break Vinyl tape Wide x To carry out the drainage test remove the air filter and pour water into the heat exchanger Saddle x Apply after carrying out a drainage test L More than 23 6 60cm More than More th n 11830044 e Sn L ES Gas side piping CX Optional part e S j Liquid side piping x Optional part S S e him ZZ iti in vi
12. Exploded View 2 Outdoor Unit C O Series NOTE Please ensure GCSC since the replacement parts may be changed demending upon the buyer s request Please check the correct parts in View RPL Replacement Part List on GCSC GCSC Website http biz Lgservice com Copyright 2010 LG Electronics Inc All right reserved 74 Only for training and service purposes LGE Internal Use Only Exploded View 2 Outdoor Unit H P Series P ITD CEA e NY ZZ
13. The RED indicator of the Outdoor unit blinks 5 times after 2 minutes with applying the power Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 27 LGE Internal Use Only Troubleshooting Guide Voltage of Connectors according to Indoor Fan Speed Input Power INDOOR PWB ASSY co rr LE nl S E 3 4 3 4 z RY COMP A RY COMP B Connecting wires CN DC DC between Indoor and Outdoor ndoor Outdoor Connecting Terminal Connecting Terminal CN DC DC BL gk Q snl e ndl 12k No of pins DC Voltage 10 Hi Med Low INDOOR 25 17 17 28 CN MOTOR 11 97 11 97 25 17 17 28 INDOOR CN DC DC 15 87 15 87 25 17 17 28 15 87 15 87 Copyright 62010 LG Electronics Inc All right reserved 72 Only for training and service purposes LGE Internal Use Only Exploded View H Exploded View Indoor Unit C E NOTE Please ensure GCSC since the replacement parts may be changed demending upon the buyer s request Please check the correct parts in View RPL Replacement Part List on GCSC GCSC Website http biz Lgservice com Copyright 2010 LG Electronics Inc All right reserved 73 Only for training and service purposes LGE Internal Use Only
14. 2010 LG Electronics Inc All right reserved 23 Only for training and service purposes LGE Internal Use Only Flaring work and connection of piping Connection of Piping Outdoc Put a couple drops of refrigerant oil on the face of the flare before assembling taking care not to add any contaminants Align the center of the pipings and sufficiently tighten the flare nut by hand Finally tighten the flare nut with torque wrench until the Outdoor unit wrench clicks Liquid side piping When tightening the flare nut with torque wrench iaaiiai ensure the direction for tightening follows the arrow on the wrench Gas side piping Bigger Outside diameter Torque diameter mm inch kgf cm 06 35 1 4 180 250 09 52 3 8 340 420 912 7 1 2 550 660 215 88 5 8 630 820 019 05 3 4 980 1210 Torque wrench Copyright 2010 LG Electronics Inc All right reserved 24 LGE Internal Use Only Only for training and service purposes Connecting the cable between indoor unit and outdoor unit Connecting the Cables Remove the cover control from the unit by loosening the screw 2 Dismount caps on the conduit panel 3 Temporarily mount the conduit tubes on the conduit panel 4 Properly connect both the power supply and low voltage lines to the corresponding terminals on the terminal block 5 Ground the unit in accordance with local codes 6 Be sure to size each wi
15. The operation with the remote controller forced and test DC DC and one do not operate Indoor and The only signal of remote controller operation stop is inputted but the product does not operate The RED indicator of outdoor unit blinks 5 times after 2 amp 3 20 LD 2 minutes with applying the power The beep sound such as beep beep beep beep beep occurs periodically in Indoor unit D Blue Connecting error The signal input of a remote controller and operation of 2 Black D G product is impossible 3 Brown The RED indicator blinks 5 times after 2 minutes with amp Red applying the power Connecting error D amp The signal of remote controller is inputted but the product does not operate The RED indicator of outdoor unit and the operation indicator of indoor one blinks 5 times after 2 minutes with applying the power Connecting error D Q3 No power for Indoor unit The signal input of the remote controller and operation of product is impossible The thermal protector of the Power Trans operates when let it alone for long time Connecting error B amp Connecting error amp amp The signal of the remote controller is inputted The fuse and Q61 in the Outdoor unit are damaged when the indoor fan is operated No power for Indoor unit The signal input of the remote controller and operation of product is impossible
16. 220z of R 410A per meter foot Pipe Size Additional Capacity 2 Sanaa Ei sr IM I Refrigerant Btu h Suction Evap Length m ft Elevation m ft length mit EG 9k 12k 012 7mm 1 2 O6 35mm 1 4 7 5 25 7 5 25 15 49 20 0 22 Example A 30tt line set is used 5 additional ft X 0 22 ounce per foot add 1 1 ounces of R 410A Important If you are ever uncertain of the unit charge reclaim evacuate and weigh in the correct charge using the unit nameplate charge adjusting for line sets longer or shorter than 7 5m 25ft A CAUTION Confirm the refrigerant R 410A Use manifold gauge and hose for R 410A Copyright 2010 LG Electronics Inc All right reserved LGE Internal Use Only Only for training and service purposes 32 Panel Front Assembly 1 First Check the side cover assembly exactly and fix the power cord in the bottom groove of cover side left 2 Assemble connecting lead wire with controller fix the upper part of panel front and match the lower part of panel front 3 Screw up panel front and suspend the hook of panel front in the groove Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes Air purgingd JT dn 2 3j le L We Am Panel Front Connector LGE Internal Use Only
17. 5m g oz R410A 900 31 8 R410A 900 31 8 R410A 900 31 8 R410A 900 31 8 Type Rotary Rotary Rotary Rotary Compressor Model GK113CAA GK113CAA GK113CAA GK113CAA Motor Type PSC PSC PSC PSC Oil Type FVC68D PVE FVC68D PVE FVC68D PVE FVC68D PVE Oil Charge cC 330 330 330 330 O L P Name MRA12053 12027 MRA12053 12027 MRA12053 12027 MRA12053 12027 Fan Indoor Type Turbo Fan Turbo Fan Turbo Fan Turbo Fan Motor Output W 24 24 24 24 Type Propeller Propeller Propeller Propeller Fan outdoor Motor Type AC Induction AC Induction AC Induction AC Induction Motor Output W 27 27 27 27 Circuit Breaker A 20 20 20 20 Power Supply Cable No mm 372 5 372 5 372 5 372 5 Power and Transmission Cable No mm 4No mrn 4 0 75 4 0 75 4 0 75 4 0 75 Piping Liquid Side mm in 6 35 1 4 6 35 1 4 6 35 1 4 6 35 1 4 Connections Gas Side mm in 12 7 1 2 12 7 1 2 12 7 1 2 12 7 1 2 Drain Hose OD ID mm in 21 5 16 0 85 0 63 21 5 16 0 85 0 63 21 5 16 0 85 0 63 21 5 16 0 85 0 63 Indoor W H D mm 600 600 146 600 600 146 600 600 146 600 600 146 Dimension inch 23 62 23 62 5 75 23 62 23 62 5 75 23 62 23 62 5 75 23 62 23 62 5 75 Outdoor W H D mm 770 540 245 770 540 245 7705407245 770 540 245 inch 30 31 21 26 9 65 30 31 21 26 9 65 30 31 21 26 9 65 30 31 21 26 9 65 Indoor kg lbs 15 33 1 15 33 1 15 33 1 15 33 1 Net Weight Outdoor ko lbs 32 70 5 32 70 5 32 70 5 32 70 5 Tool Code Chassis Indoor Outdoor SF UL SF UL SF UL SF UL Temperature Control Thermist
18. Check for the communication error and the operating condition of product after also operating with the remote controller then taking above 2 minutes d Apply the power again after about 20 seconds by the power of Outdoor unit is off d Check for the communication error and the operating condition of product after also operating with the remote controller then taking above 2 minutes d Check the PWB assembly of Indoor and Outdoor unit Caution If the connecting wires of Indoor and Outdoor unit are not connected within 2 minutes after the power of Outdoor unit is applied a communication error will occur Therefore the power should be applied after connecting them Copyright 2010 LG Electronics Inc All right reserved 69 Only for training and service purposes LGE Internal Use Only Troubleshooting Guide The phenomena in case of connecting error INDOOR UNIT Connector Type Condition Phenomena CN DC DC Open and connecting error The same as the phenomenon of Outdoor Unit OGueO D Blue Black 8 Brown Red E The indoor fan does not operate SBEMOTOR Open The operation indicator of Indoor unit blinks 8 times Open The up down vane does not operate CN UP DOWN Short between terminals The up down vane does not smoothly operate CN DISP Open It does not operate with a remote controller The operation indicator blinks once On for 0 5 secon
19. Copyright 2010 LG Electronics Inc All right reserved 34 Only for training and service purposes Tubing connection Discharge air amp Intake temperature Discharge temperature Outside ambient The pressure of the Refrigerant Tu gas side service valve R 410A 95 F 35 C 85 G 5kglcmG 120 135 P S 1G LGE Internal Use Only Test running If the actual pressure is higher than shown the system is most likely over charged and charge should be removed If the actual pressure are lower than shown the system is most likely undercharged and charge should be added PUMP DOWN This is performed when the unit is relocated or the refrigerant circuit is serviced Pump Down means collecting all refrigerant into the outdoor unit without the loss of refrigerant U CAUTION Be sure to perform Pump Down procedure in the cooling mode Pump Down Procedure 1 Connect a low pressure gauge manifold hose to the charge port on the gas side service valve 2 Open the gas side service valve halfway and purge the air in the manifold hose using the refrigerant 3 Close the liquid side service valve all the way 4 Turn on the unit s operating switch and start the cooling operation 5 When the low pressure gauge reading becomes 1 to 0 5kg cm G 14 2 to 7 1 P S I G fully close the gas side valve and then quickly turn off the unit Now Pump Down procedure is completed
20. and all refrigerant is collected into the outdoor unit Copyright 2010 LG Electronics Inc All right reserved 35 Only for training and service purposes LGE Internal Use Only How to replace picture amp photograph E How to replace picture amp photograph 1 Turn off power and then open 2 Pull out the both links of lower 3 Push and close the top part of the upper part of front panel part of front panel as the front panel and then pull described in the below picture the bottom part of the panel forward until it is secured B Turn upside down of the 6 Place the picture photograph picture and turn over mat then between the exited picture and take off a protective tape mat Recommended size of a attached at the mat photo picture 450mm x 450mm Protective tape T Cover mat and press down 8 Slide the photo graph drawing 9 Push both links of lower part of with hand s until contacting requested under both hanger panel inside and fix it Then closely parts as following and fix them turn on Press the front panel lightly to close XX In case a mat is not used recommended size of a photo picture 522mm x 522mm When powering on after replacing filter and picture the front panel doesn t intervene Copyright 2010 LG Electronics Inc All right reserved 36 Only for training and service purposes LGE Internal Use Only Operation Operation Indoor Unit
21. automatically button during Auto below 64 F 64 F Operation over 86 F 86 F INTAKE AIR TEMP SETTING TEMP 1 F Compressor OFF SETTING TEMP 1 F Compressor ON INDOOR FAN SPEED COMPRESSOR OFF The electronic control operation ON Copyright 2010 LG Electronics Inc All right reserved 39 Only for training and service purposes LGE Internal Use Only Operation m Auto Operation for Dehumidification only Heating Model The Setting temperature will be same that of the auto operation for cooling Compressor ON temperature Setting temperature 2 F Compressor OFF temperature Setting temperture 1 F Intake air temp below 68 F Over 68 F below 70 F over 86 F Setting temp 68 F Intake air temperature 1 F 86 F m Auto Operation for Heating only Heating Model Compressor ON temperature Setting temperature Compressor OFF temperature Setting temperature 6 F m Vertical louver auto operation During Auto Operation pressing the chaos swing button makes the horizontal louvers swing up and down automatically If you want to stop auto swing press chaos swing button again 5 Healthy Dehumidification When the dehumidification operation input by the remote control is received the intake air temperature is detected and the setting temp is automatically set according to the intake air temperature 79 F lt Intake Air Temp 2 77 F 75 F lt Intake I
22. could occur Unplug the unit if strange Stop operation and close the sounds odors or smoke comes window in storm or hurricane If from it possible remove the air conditioner from the window before the hurricane arrives There is risk of electrical shock or There is risk of property damage fire failure of product or electric shock LGE Internal Use Only Safety Precautions Do not open the inlet grill of the product during operation Do not touch the electrostatic filter if the unit is so equipped There is risk of physical injury electric shock or product failure When the product is soaked flooded or submerged contact an Authorized Service Center e There is risk of fire or eletric shock Ventilate the product from time to time when operating it together with a stove etc e There is risk of fire or electrical shock Unplug the appliance before performing cleaning or maintenance There is risk of electrical shock nt When the product is not be used for a long time disconnect the power supply plug or turn off the breaker There is risk of product damage or failure or unintended operation Take care to ensure that nobody could step on or fall onto the outdoor unit This could result in personal injury and product damage ACAUTION B installation Always check for gas refrigerant leakage after installation or repair of p
23. electric shock or damage to the plastic parts of the product Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes There is risk of personal injury Do not touch the metal parts of the product when removing the air filter They are very sharp Do not step on or put anyting on the product outdoor units There is risk of personal injury and failure of product LGE Internal Use Only Safety Precautions Always insert the filter securely Do not insert hands or other Clean the filter every two weeks objects through the air inlet or or more often if necessary outlet while the air conditioner is plugged in A dirty filter reduces the efficiency There are sharp and moving parts of the air conditioner and could that could cause personal injury cause product malfunction or damage Do not drink the water drained from the unit It is not sanitary and could cause serious health issues Use a firm stool or ladder when cleaning or Replace the all batteries in the remote control with maintaining the air conditioner new ones of the same type Do not mix old and new batteries or different types of batteries Be careful and avoid personal injury There is risk of fire or explosion E Disuse Do not recharge or disassemble the batteries Do If the liquid from the batteries gets onto your skin not dispose of batteries in a fire or clothes wash it well
24. mm 10 0 4 T tare 100 3 9 Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 10 LGE Internal Use Only Product Specifications M Product Specifications Model AS C091F2G0 LA091CNP AS C121F2G0 LA121CNP AS H091F2G0 LA091HNP AS H121F2G0 LA121HNP ee AS CO91F2GO LAOOCP AS C121F2GO LA120CP AS HO91F2GO LAQSOHP AS H121F2GO LA120HP Cooling Capacity kW 2 87 3 37 2 87 3 37 Min Rating Max Btu h 9 800 11 500 9 800 11 500 Heating Capacity kW 2 87 3 37 Min Rating Max Btu h 9 800 11 500 Power Input Cooling Heating W 980 1 100 980 980 1 100 1 100 Running Current Cooling Heating A 9 4 10 9 4 9 4 10 10 Starting Current Cooling Heating A 57 0 57 0 57 0 57 0 57 0 57 0 EER WW 2 93 3 06 2 93 3 06 Btuh W 10 0 10 5 10 0 10 5 COP WW 2 93 3 06 Power Supply QIVIHz 1 115 60 1 115 60 1 115 60 1 115 60 Power Factor 90 7 95 7 90 7 95 7 Air Flow Rate Indoor Max m min cfm 9 3 330 9 3 330 9 3 330 9 3 330 Outdoor Max m min cfm 25 883 25 883 25 883 25 883 Moisture Removal l h 1 4 1 4 1 4 1 4 Sound Level Indoor MIL dB A 43 41 35 29 41 35 29 41 35 29 41 35 29 Outdoor Max dB A 3 48 48 48 48 Refrigerant amp Charge at 7
25. the charge hose connector at the nitrogen cylinder When the system pressure is reduced to normal disconnect the hose from the cylinder Charge hose Nitrogen gas cylinder in vertical standing position Copyright 2010 LG Electronics Inc All right reserved 30 Only for training and service purposes LGE Internal Use Only Soap water method 1 Remove the caps from the 2 way and 3 way valves 2 Remove the service port cap from the 3 way valve 3 To open the 2 way valve turn the valve stem counterclockwise approximately 90 wait for about 2 3 sec and close it 4 Apply a soap water or a liquid neutral detergent on the indoor unit connection or outdoor unit connections by a soft brush to check for leakage of the connecting points of the piping 5 If bubbles come out the pipes have leakage Evacuation 1 Connect the charge hose end described in the preceding steps to the vacuum pump to evacuate the tubing and indoor unit Confirm the Lo knob of the manifold valve is open Then run the vacuum pump The operation time for evacuation varies with tubing length and capacity of the pump The following table shows the time required for evacuation Required time for evacuation when 30 gal h vacuum pump is used If tubing length is less If tubing length is longer than 10m 33 ft than 10m 33 ft 10 min or more 15 min or more 2 When the desired vacuum is reached close the Lo knob o
26. valve service port after operating the unit for 10 minutes The method of using graph Find outdoor temperature Find indoor temperature onto the curve of outdoor temperature Read suction pressure at the axis of ordinates The method of using equation Calculate suction pressure after putting indoor and outdoor temperature into the equation Operating Suction Pressure For R410A According to Indoor amp Outdoor Temperature At operating the Unit for 10 minutes D 5 a 25 E O a ag 59 S9 gc Sx S S 8 o 5 10 15 20 25 30 35 40 Indoor Temp C P 3 0 0123 x Tout 0 8 x Tin Where P Suction Pressure kg cm g Tout Outdoor Temperature C Tin Indoor Temperature C 7 62 Copyright 2010 LG Electronics Inc All right reserved LGE Internal Use Only Only for training and service purposes Troubleshooting Guide Cycle Parts Trouble analysis 1 Check temperature difference between intake and discharge air and operating current Pet ei i e eee All amount of refrigerant leaked rated iene out Check refrigeration cycle Temp Difference Temp difference approx 14 F 8 C x Refrigerant leakege Current less than 80 of Clog of refrigeration cycle rated current Defective compressor Operating Current Temp difference less than 14 F 8 C Current Over the reated Excessive amount of refrigerant current Temp differenc
27. 15V 60Hz e Main power s voltage Voltage applied to the unit Connecting method of Indoor Outdoor connecting cable Check PWB Ass y Outdoor unit Fuse Pattern damage Varistor ZNRO1J Primarily the operating condition of Micom is OK Check each load Indoor Outdoor Fan Motor Compressor Stepping Motor and contacting condition of related connector including connecting cable of Indoor Outdoor Unit m Check the connection housing for contacting Connector related to CN POWER Connector related to CN FAN Connector contacting of Outdoor Fan Compressor Display PWB Ass y Check Connector related to CN DC DC lE PCB Board Operation Check Items Content Remedy Power Transformer Outdoor unit ICO3D 7805 Output Outdoor unit ICO1A KIA7036 Reset IC OSC01B 4MHz Indoor Outdoor unit About AC115V 10 Check the power voltage Input Voltage Output Voltage About DC15V 3 1C01D 7812 Output DC 12V Indoor Outdoor unit C02D 7805 Output Indoor unit DC 5V Voltage of Outdoor unit Micom No 18 Voltage of Indoor unit Micom No 43 and soldering condition Replace SMPS Module Replace ICO1D Replace ICO2D Indoor unit ICO3D Outdoor unit Replace faulty parts Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 64 LGE Internal Use Onl
28. 600 600 146 600 600 146 inre TES inch 23 62 23 62 5 75 23 62 23 62 5 15 Outdoor W H D mm 770 540 245 770 540 245 inch 30 31 21 26 9 65 30 31 21 26 9 65 Indoor kg lbs 15 33 1 15 33 1 Net Weight Outdoor ko lbs 32 70 5 32 70 5 Tool Code Chassis Indoor Outdoor SF UL SF UL Temperature Control Thermistor Thermistor Functions Plasma Filter O O Prefilter washable anti fungus U O Auto Clean U U CHAOS Wind Auto Wind U O Steps Fan Cool Heat 2003 04 03 2003 04 03 Airflow Direction Control up amp down Auto Auto Airflow Direction Control left amp right Auto Auto Remocon Type Wireless LCD Wireless LCD Setting Temperature Cooling 18 30 18 30 Range Heating 16 30 16 30 Auto Operation Micom Control U O Auto Changeover Micom Control O O Self Diagnosis U O Timer 24h On Off 24h On Off Sleep Operation U O Soft Dry Operation O O Restart Delay minute 3 3 Deice Control Defrost U O Hot Start U U Jet Cool O O Low Ambient Operation Special Function c Dry Contact Network Functions F Network Solution LGAP P1485 Note O Applied No relation For circuit breaker rating please conform to local standards wherever necessary Some of functions are slightly different depending upon models The specification may be subject to change without notic for purpose of improvement Copyright 2010 LG Electronics Inc All right reserved 12 Only for training and service purposes LGE Internal Use Only
29. Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 44 LGE Internal Use Only Remote Control O The controls will look like the following Controls P Signal transmitter p AERE ES LAR en LL ON oa or e J 1 AUTO CLEAN i LS as C3 n Flip up door opened 3 Operation Mode Cooling Operation UF Auto Operation or Auto Changeover A UF Healthy Dehumidification Operation 6 y Heating Operation Xt e Cooling Model 1 Heat Pump Model 4 Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes N LS gt oa co o CHAOS SWING BUTTON Operation START STOP BUTTON Operation starts when this button is pressed and stops when C the button is pressed again OPERATION MODE SELECTION BUTTON A05 Used to select the operation mode O ROOM TEMPERATURE SETTING BUTTONS I Used to select the room temperature INDOOR FAN SPEED SELECTOR Used to select fan speed in four steps low medium high and CHAOS c JET COOL HEATING OPTIONAL coy Used to start or stop the speed cooling heaing speed cooling heating operates super high fan speed in cooling heatig mode Used to stop or start louver movement and set the desired up down airflow direction ON OFF TIMER BUTTONS Used to set the time of star
30. Guide Compressor Outdoor Fan are unable to drive Turn on Main Power d Operate Cooling Mode 25 by setting the desired temperature of the remote controller is less than one of the indoor temperature by 2 F at least When in Fan Mode Compressor Outdoor Fan is stopped Check the sensor for indoor temperature is attached as close as to be d d effected by the temperature of Heat Exchanger EVA d When the sensor circuit for indoor temperature and connector are in bad connection or are not engaged Compressor Outdoor Fan is stopped Check the related circuit of RO2H 12 1K RO4H 6 2K Micom No 27 Indoor unit Check the indoor temperature sensor is disconnected or not About 10kQ at 77 F d When the temperature around Outdoor PWB Ass y is above 163 F the compressor is stop and only Outdoor Fan is operating d Check Relay RY COMP for driving compressor When the power About AC200V is applied to the connecting wire terminal support transferred to compressor PWB Ass y is normal Check the circuit related to the relay Outdoor unit Check point COMP ON COMP OFF Between Micom No 5 6 and GND DC5V DCOV Between ICO1M ICO2M No 9 Below DC 1V t DC12V and ICO1M ICO2M No 8 app nadig i Turn off Main Power l1 Check the electrical wiring diagram of outdoor side Check the abnormal c
31. LG http biz lgservice com Universal Air Conditioner MODEL LAN126HNP ASNH121F2G1 LAU126HNP ASUH121FUG1 LANO96HNP ASNHOS1F2G1 LAUO96HNP ASUHO91FUG1 LANOS1CNP ASNCOS1F2G0 LAUOS CNP ASUC091FUGO LAN121CNP ASNC121F2G0 LAU121CNP ASUC121FUGO LANO91HNP ASNH091F2G0 LAUO91HNP ASUHOS1FUGO LAN121HNP ASNH121F2G0 LAU121HNP ASUH121FUGO LAOSOCPI ASNCOS1F2G0 LAOS0CPO ASUC091FUGO LA120CPI ASNCOS1F2G0 LA120CPO ASUCO1FUGO LAOSOHPI ASNHOS1F2G0 LAOS0HPO ASUHO91FUGO LA120HPI ASNH121F2G0 LA120HPO ASUH121FUGO CAUTION Before Servicing the unit read the safety precautions in General SVC manual Only for authorized service personnel Air Conditioner Service Manual TABLE OF CONTENTS Safety Precautions ee teet foc IA ren dra aa i aada a eid eia 3 IUNII e 9 Symbols Used in this Manual sssssssesee eee tnmen nnne tenete enini trennen tnter tnn nan 9 INdOOr WNIT EE 9 Outdoor Units ro rere SD Ro enn EIFE RU a ee re et ir deris 10 Product Specifications rason iei e coe eni e tener e eu rente n c eae D rer ee edad 11 Installation EI 13 IristallatorilP arts ceste A ecre A rere rite epe rev rue re a civ Dre ee ciere E 13 Installation Tool bre mE e ERN EUR PEE ELE PE EUG EDEN FIR ERE FAR XE UR He eee 13 Invst 14 Confirmithe Refrigerant x uci rre n m e tenen bed crea rc d rn ona Eee due ERE EE red n Pe
32. Operation ON OFF by Remote controller Sensing the Room Temperature Room temperature sensor THERMISTOR 1 Room temperature control e Maintains the room temperature in accordance with the Setting Temp Starting Current Control Indoor fan is delayed for 5 seconds at the starting L 1 Time Delay Safety Control e Restarting is inhibited for approx 3 minutes L 4 Indoor Fan Speed Control e High Med Low and Auto Operation indication Lamps LED Lights up in operation Healthy Dehumidification Mode Intermittent operation of fan at low speed Sleep Mode Auto Control The fan is switched to low Cooling med Heating speed Defrost control Heating The unit will be stopped after 1 2 3 4 5 6 7 hours Both the indoor and outdoor fan stops during defrosting Hot start will be operated after The fan is switched to intermittent or irregular operation defrosting ends The fan speed is automatically switched from high to low speed Auto Air Control by the unit electronic control Chaos Swing Hot start Control Heating m The indoor fan stops until the The louver can be set at the desired position or swing up indoor pipe temperature will be and down automatically reached at 82 F 28 C Copyrig
33. active phase conductors Copyright 2010 LG Electronics Inc All right reserved 27 Only for training and service purposes LGE Internal Use Only Checking the drainage and forming the pipings E Checking the drainage and forming the pipings Checking the Drainage To check the drainage 1 Pour a glass of water on the evaporator 2 Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit FF E g b Drain pipin P g Downward slope 1 The drain hose should point downward for easy drain flow 2 Do not make drain piping like the following s Accumulated Do not raise drain Water Air Tip of drain hose Less than dipped in water 50mm gap U H t Water Wate Water ater ater S ater leakage leakage leakage Ditch 28 LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes Checking the drainage and forming the pipings Forming the Piping Form the piping by wrapping the connecting portion of the indoor unit with iin S m insulation material and secure it with two gum type sealer kinds of vinyl tapes If you want to connect an additional drain hose the end of the drain outlet should be routed above the ground Secure the drain hose appropriately 8848844044444 In
34. alled every 16 4 23feets 5 7 meters Copyright 2010 LG Electronics Inc All right reserved 56 Only for training and service purposes LGE Internal Use Only 3 way Valve E Pumping Down Troubleshooting Guide Purge the air Outdoor unit e Procedure 1 Confirm that both liquid side and gas side 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 Gas side valve Connect the charge hose 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 5b Set the liquid side valve to the closed position Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 6 Operate the air conditioner in cooling mode and stop it when the gauge indicates 1kg cm g 7 Immediately set the Gas side valve to the closed position Do this quickly so that the gauge ends up indicating 3 to 5kg cm g 8 Disconnect the charge set and mount the Liquid side and Gas side valve s stem nuts and the service port nut Use torque wrench to tighten the service port n
35. b neighbors Rooftop Installations More than 23 6 60cm More than More than a9 11 9 30cm 11 8 30cm SS More than 28 70cm More than 23 6 60cm If the outdoor unit is installed on a roof structure be sure to level the unit Ensure the roof structure and anchoring method are adequate for the unit location Consult local codes regarding rooftop mounting If the outdoor unit is installed on roof structures or walls this may result in excessive noise and vibration and may be also classed as non serviceable installation Copyright 2010 LG Electronics Inc All right reserved 16 Only for training and service purposes LGE Internal Use Only Installation Piping Length and Elevatic Capacity Pipe Size Standard Max Max Additional i Length m ft Elevation m ft length f Refrigerant Btu h Suction Evap ength mitt ength m ft g m oz ft 9k 12k 0127mm 1 2 O6 35mm 4 7 5 25 7 5 25 15 49 20 0 22 Indoor unit Outdoor unit Outdoor unit Outdoor unit Indoor unit If piping length is more than 16 4ft 5m CAUTION Capacity is based on standard length and maximum allowance length is on the basis of reliability Oil trap should be installed every 16 4 23feets 5 7 meters Copyright 2010 LG Electronics Inc All right reserved 17 Only for training and service purposes LGE Internal Use Only Installation O
36. c There is risk of fire or electric There is risk of electric shock shock shock Install the panel and the cover of Do not modify or extend the Do not install remove or re control box securely power cord install the unit by yourself customer There is risk of fire or electric There is risk of fire or electric There is risk of fire electric shock shock shock explosion or injury Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Safety Precautions Be cautious when unpacking and installing the product Sharp edges could cause injury Be especially careful of the case edges and the fins on the condenser and evaporator Be sure the installation area does not deteriorate with age If the base collapses the air conditioner could fall with it causing property damage product failure and personal injury 4 E Operation Take care to ensure that power cords could not be pulled out or damaged during operation e There is risk of fire or electrical shock Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes There is risk of fire electric shock explosion or injury There is risk of fire or electric For installation always contact the dealer or an Authorized Service Center Do not install the product on a defective installation stand It may ca
37. cases where the outdoor unit is installed below the indoor unit perform the following 1 Tape the piping drain hose and connecting cable from down to up Pipings r SONS N yd Connecting cable ve ffi 1099947444494494 A 2 Secure the tapped piping along the exterior wall using saddle or equivalent Trap is required to prevent water from entering electrical parts In cases where the outdoor unit is installed above the Indoor unit perform the Seal a small opening following around the pipings i with gum type sealer 1 Tape the piping and connecting cable from down to up 2 Secure the taped piping along the exterior wall Form a trap to prevent water entering the room 3 Fix the piping onto the wall by saddle or equivalent Copyright 2010 LG Electronics Inc All right reserved 29 Only for training and service purposes LGE Internal Use Only Air purgingd Z AIR PURGING Air purging The air and moisture remaining in the refrigerant system have undesirable effects as indicated below 1 Pressure in the system rises 2 Operating current rises 3 Cooling or heating efficiency drops 4 Moisture in the refrigerant circuit may freeze and block capillary tubing 5 Water may lead to corrosion of parts in the refrigeration system Therefore after evacuating the system take a leak test for the piping and tubing between the indoor and outdoor unit Air pur
38. 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 76 cmHg vacuum of 4 mmHg or less 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 2010 LG Electronics Inc All right reserved 60 Only for training and service purposes LGE Internal Use Only Troubleshooting Guide 3 Gas Charging After Evacuation Check valve Charging cylinder Outdoor unit e Procedure 1 Connect the charge hose to the charging cylinder Connect the charge hose which you dis connected from the vacuum pump to the valve at the bottom of the cylinder f you are using a gas cylinder also use a scale and reverse the cylinder so that the system can be charged with liquid 2 Purge the air from the charge hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air Be careful of the liquid refrigerant The procedure is the same if using a gas cylinder 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 specified amount of refrigerant it can be charged with a little at a time approximately 150g
39. cutter of wire cutting pliers then strip the insulation to expose the solid wire about 25mm 15 16 Using a screwdriver remove the terminal screw s on the terminal plate Using pliers bend the solid wire to from a loop suitable for the terminal screw Shape the loop wire properly place it on the terminal plater and tighten securely with the terminal screw using a screwdriver For strand wiring il Copyright 2010 LG Electronics Inc All right reserved Cut the wire end with a wire cutter or wire cutting pliers then strip the insulation to expose the strand wiring about 10mm 3 8 Using a screwdriver remove the terminal screw s on the terminal plate Using a round terminal fastener or pliers securely clamp each stripped wire end with a round terminal Position the round terminal wire and replace and tighten the terminal screw using a screwdriver Only for training and service purposes Cap Reuse Lock nut Hole for low C v ap voltage line Remove Taping for sealing Power supply line 10 115V 208 230V Low voltage line Conduit panel connecting cable E Solid wire e 0 id wire EY Loop E gt N 2 wv Insulation Strand wire S G E gt Round terminal 2 77 Screw with 2 special washer d Round terminal Screw with special washer Wire Terminal plate Round terminal Wire
40. d Open Off for 3 seconds The compressor and the outdoor fan stop The indoor fan speed is low CN TH The operation indicator blinks once Short between terminals on for 0 5 second off for 3 seconds The compressor operates continuously regardless amp and of ROOM TH of the setting temperature and the variation of room temperature Short between terminals The operation indicator blinks once D and 2 of PIPE TH on for 0 5 second off for 3 seconds Continuous operation Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 70 LGE Internal Use Only OUTDOOR UNIT Troubleshooting Guide Connector Type Condition Phenomena All functions stop The operation with the remote controller forced and OPEN test one do not operate CN POWER Connecting reversely PWB pattern is damaged when applying the power All functions stop or the compressor does not operate OPEN The operation with the remote controller forced and test RY COMP one do not operate terminal All functions stop Connecting reversely The operation with the remote controller forced and test one do not operate All functions stop CN TRANS OPEN The operation with the remote controller forced and test one do not operate CN FAN OPEN The Indoor Fan does not operate The connecting All functions stop Outdoor Unit Connecting error wire of CN OPEN
41. door Unit Cooling Only Models amp Heating Models WIRING DIAGRAM i MAIN PCB ASM CN MOTOR1 6 0 0301 ooo CN DC DC 1TOO OO OTTO OO OTTO OOOO T BLOCK O PLASMA AIR CLEAN TO OUTDOOR UNIT aes X CONNECT ED PCB ASM S ooooo PCB STEP MOTOR FORCE S W INDOOR WIRING DIAGRAM 3854A20379Q Copyright 2010 LG Electronics Inc All right reserved 53 Only for training and service purposes LGE Internal Use Only Schematic Diagram 2 Outdoor Unit Cooling Only Models amp Heating Models WIRING DIAGRAM QE 11 mm O OO020 CN MOTOR O TAB N OJ RD BR HAOO NO m mr ZO MAIN PCB BK UJ A O Z g o O JJ BL RY COMP O O WH 3 4 rw 1 9 BK C NA PRESSURE WH S W WH D CRANK CASE HEATER
42. e over 14 F 8 C Normal Temperature difference between intake and discharge air depends on room air humidity When the room air humidity is relativery higher temperature difference is smaller When the room air humidity is relatively lower temperature difference is larger 2 Check temperature and pressure of refrigeration cycle Suction pressure Temperature Compared with Compared with Cause of Trouble Description the normal value the normal valve Hi Defective compressor Current is low igh Defective 4 way reverse valve Higher 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 Current is low 1 The suction pressure is usually 4 5 6 0 kg cm G Cooling at normal condition 2 The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with putty Copyright 2010 LG Electronics Inc All right reserved 63 Only for training and service purposes LGE Internal Use Only Troubleshooting Guide Electronic Parts 9k model Product does not operate at all Refer to Electronic Control Device drawing and Schematic diagram Turn off Main Power JI L After 20 seconds Turn on Main Power Does beeping sound is made from the Indoor Unit Check the voltage of power About AC 1
43. e ed 15 Select the best Locations ene tnter nenne tette ntn eene nte inerenti eet t enn 16 Piping Length and Elevation wisi cca iiti tie ere rete rece ie ce ca dE Re E de P db d E Ge ra De a E CR EA 17 Preparing Work for Installation sese nnenn tne ennt nennt tn tme tne nnnn enne tenen tein 18 Fixing Indoor Unit iu nt trente certe c e ceci er der p rm c ce ped ren rc o dea ce p e te rd 19 Flaring work and connection of piping sssseenenenmneeneenennenennennnnennnnen ener nennen nnne 20 azules de 20 Connection of piping IngOOf ao rr Rr Rr tete a eb m de AR d ERR B FRE RR DRE G 21 Connection of the drain s ERE 22 Connection of piping OUtdOOl tects er ERE ee o iro uenire E cid e eb pn p De 24 Connecting the cable between indoor unit and outdoor unit sse 25 Connect the cable to the Indoor Unil i riter ire en tere rete daddy enn a rer Ge ans 25 Connection method of the connecting cable Example sse tnn 26 Checking the drainage and forming the pipings ssssssssseeeeeeeenneen eene nnns 27 Checking the drainage eene nennen nennt nennt teens tr trente tentent taris tenet ntn enitn tnra 28 Iorming the PIPING e cr nii ce te mte tere ri t ttu c ce eben er nter ter eere ce e a er a d D c e tede d e i enl nn 29 AIR HT e ce ERE 30 gel rose a 30 Chargin
44. each time while operating the air conditioner in the cooling cycle however one time is not sufficient wait approximately 1 minute and then repeat the procedure pumping down pin Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 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 4 Immediately disconnect the charge hose from the 3 way valve s service port Stopping partway will allow the gas to be discharged If the system has been charged with liquid refrigerant while operating the air conditioner turn off the air conditioner before disconnecting the hose 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 A CAUTION This unit is charged with R 410A Pay attention not to charge R 22 61 LGE Internal Use Only Troubleshooting Guide Additional gas charging Gas leakage When refrigerant is insufficient by leakage recharge the unit with the refrigerant up to normal operating suction pressure Use the graph or the equation below to get operating suction pressure according to indoor and outdoor temperature Suction pressure was measured at 3 way
45. ed Surface Cracked Uneven damaged thickness Even length all round Connecting the Piping Indoor Preparing the indoor unit s piping and drain hose for installation through the wall 1 Route the indoor tubing and the drain hose in the direction of rear left or right 2 Tape the tubing drain hose and the connecting cable Be sure that the drain hose is located at the lowest side of the bundle Locating at the upper side can cause drain pan to overflow inside the unit Connecting cable Drain hose L CAUTION If the drain hose is routed inside the room insulate the hose with an insulation material so that dripping from sweating condensation will not damage furniture or floors Foamed polyethylene or equivalent is recommended Copyright 2010 LG Electronics Inc All right reserved 21 Only for training and service purposes LGE Internal Use Only Flaring work and connection of piping Connecting the piping with the indoor unit and drain hose with drain pipe 1 Align the center of the pipings and sufficiently tighten the flare nut by hand 2 Tighten the flare nut with a wrench Outside diameter Torque mm inch kgf cm 06 35 14 180 250 9 52 3 8 340 420 9127 1 2 550 660 3 When extending the drain hose at the indoor unit install the drain pipe Wrap the insulation material around the connecting portion 1 Overlap the connecti
46. er from frosting Compressor and outdoor fan stop when indoor pipe temperature is below 32 F 0 C and restart at the pipe temperature is above 45 F 7 C Copyright 2010 LG Electronics Inc All right reserved 38 Only for training and service purposes LGE Internal Use Only Operation Auto Operation Electronic control mode The operation procedure is shown below Cooling amp Heating Model Press Start Stop Button Y Select Auto Operation Mode Y Check the Room temperature Y Operation mode Indoor fan speed Setting temperature are decided automatically by the unit electronic control Intake air x Over below o temperature Below 70 F 70 F 76 F Store Operation Mode Heating Soft Dry Cooling If initial mode is decided that mode is continued without the room temperature changing m Auto Operation for Cooling Operation Condition Intake air Temperature Setting Temperature Fan Speed Air Direction Control Over 78 F 77 F Over 76 F below 78 F Intake air 1 C l In this mode Wan Operation Over 72 F below 76 F Intake air 0 5 C when pressing the vertical air Over 68 F below 72 F Intake air temperature onone by direction control ine electronic button vertical below 64 F 64 F control ee ouver swings up When pressing room Over 64 F below 86 F Electronic control and down temperature setting n
47. f the manifold valve and stop the vacuum pump Finishing the job 1 With a service valve wrench turn the valve stem of liquid side valve counter clockwise to fully open the valve 2 Turn the valve stem of gas side valve counter clockwise to fully open the valve 3 Loosen the charge hose connected to the gas side service port slightly to release the pressure then remove the hose 4 Replace the flare nut and its bonnet on the gas side service port and fasten the flare nut securely with an adjustable wrench This process is very important to prevent leakage from the system 5 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 Copyright 2010 LG Electronics Inc All right reserved 31 Only for training and service purposes Air purgingd 2 way valve Open 3 way valve Close Cap Vacuum pump LGE Internal Use Only Air purgingd Charging E Each outdoor unit is factory charged nameplate charge for the evaporator as well as a 7 5m 25ft line set Any time a line set is used either shorter or longer then the nominal 7 5m 25ft line set length the refrigerant charge has to be adjusted Whether the line set is made shorter or longer you must adjust the charge based on how many ft of tubing are either added or removed based on 20g 0
48. falls below 78 F fan stops The operation diagram is shown below INDOOR PIPE TEMP 82 F 78 F INDOOR FAN SPEED Selecting fan speed COMPRESSOR Copyright 2010 LG Electronics Inc All right reserved 41 Only for training and service purposes LGE Internal Use Only Operation 7 Cooling or Heating Mode with Sleep Mode Auto Control When selecting the Cooling 3 or the Heating 3 combined with the Sleep Mode Auto Control 7X the operation diagram is as following m Cooling Mode with the Sleep Mode The setting temperature will be automatically raised by 2 F 30 minutes later and by 4 F 1 hour later The operation will be stopped after 1 2 3 4 5 6 7 hours 30 minutes INTAKE AIR TEMP SETTING TEMP 1 F Compressor ON SETTING TEMP 1 F Compressor OFF m Heating Mode with the Sleep Mode only Heating Model The operation will be stopped after 1 2 3 4 5 6 7 hours INTAKE AIR TEMP SETTING TEMP 6 F um Compressor OFF E SETTING TEMP f Compressor ON o HERR INDOOR FAN SPEED Wed COMPRESSOR ON Low or OFF Low or OFF Low or OFF ON OF ON OF Copyright 2010 LG Electronics Inc All right reserved 42 Only for training and service purposes LGE Internal Use Only Operation 8 Forced Operation Operation procedures when the remote control can t be used The operation will be started if the power button is pressed If y
49. for training and service purposes LGE Internal Use Only Installation Select the best Location L B Indoor unit 1 Do not have any heat or steam near the unit 2 Select a place where there are no obstacles in front of the unit 3 Make sure that condensation drainage can be conveniently routed away 4 Do not install near a doorway 5 Ensure that the interval between a wall and the left or right of the unit is more than 19 6 50cm The unit should be installed as high as possible on the wall allowing a minimum of 7 9 20cm from ceiling 6 Use a stud finder to locate studs to prevent unnecessary damage to the wall More than More than Ww 7 9 20cm 19 6 50cm More than More than t 19 6 50cm 4 9ft 1 5m CAUTION Install the indoor unit on the wall where the height from the floor is more than 4 9 feets 1 5 meters Outdoor unit 1 If an awning is built over the unit to prevent direct sunlight or rain exposure make sure that heat radiation from the condenser is not restricted 2 Ensure that the space around the back and sides is more than 11 8 30cm The front of the unit should have more than 28 70cm of space 3 Do not place animals and plants in the path of the warm air 4 Take the weight of the air conditioner into account and select a place where noise and vibration are minimum 5 Select a place where the warm air and noise from the air conditioner do not distur
50. g LO O J O O O O F z3 8 3 ec 10 O E Q g 19 9 E i j 3 8 aq 69 n DOO eon GOUIE g amp Diag Hs 18 ag Bie 0 eren p ger B 226 G U 6 63 p cosH Jm eos 63 8228 S s S Bp et Loo 3 TERNE oie IOB E X 5 8 8 CO2H SUO O l C ew SG ENT om E 1989989 l O Bottom View 5 bs if g S w COE me IS i 8 o HHG 7 e 6670 19 O 4 E 9 am Q O ogot g O o9 0 64 0 O d O Q T a o o ii noO OO got b EM Y a ea 8 iB E aa 3 COMES pag 8 az O d 8 2p BB E L oO Oo OZO oto Oe 9 E oO OwO Q o ete o O eo of O O 29 is 5 ER O di O slim qim gue 7 O Copyright 2010 LG Electronics Inc All right reserved 51 Only for training and service purposes Schematic Diagram LGE Internal Use Only Schematic Diagram DISPLAY P W B ASM P No 6871A20921A PCB ASSEMBLY _ f PCB ASM6871420921 COLA 4 LJ vt UT 2 G i il J g o CN DISP d PWB6870A90729A Copyright 2010 LG Electronics Inc All right reserved 52 Only for training and service purposes LGE Internal Use Only Schematic Diagram Wiring Diagram 1 In
51. g MC a 32 Paneltront assembly adorti aaa HEES re ad dard dae eere e laver RE D du t 33 Test Ta se reti E E He endetive te car sates esas aired eis aa eine 34 How to replace picture amp photograph creer tet cea i meno pc nr pure pcne o 36 Operation m Ea 37 gil ELE 37 The f rictioni of malti COMO i i eiae rette rcr eerie teet ri re resi eo ree ri Fe E Ee e e E f FER Fa 38 Display FUNCUON icin 44 Self diagnosis FUNCUON cec nce i cete e ru rmi Een ire n n Roc d e m ra e D c E d e eet Re E 44 Remote Control Operations sse eene tnnt tenente tenet inei tinet tern 45 ELEC DE iaa 46 Iridoor DIDIT so rot OE ERE em ir E raa ede tarde 46 Schematic Diagram ssena 50 beenden ense iege ofr de eiue Det are ieee Vet o oe d erts gages 48 Heat Pump Cooling Only Series Indoor Unit tnmen 48 Heat Pump Series Outdoor Uil root i ettet en n e berate aleve dr boc o ted 49 INDOOR UNIT P W B ASSEMBLY 5 poto e rote o en de dg e ERE e ree ea 50 OUTDOOR UNIT P W B ASSEMBLY 5 certi rrt emer reir deed eere noted oce eM eee eter 51 DISPLAY P W BASM iis eE M 52 Ulli R n ETE 53 Troubleshooting Guide 2 rennen nei ca e end Dn nea ne Tee Her be Ea 55 Refrigeration Cycle Diagram
52. g m Be sure to check for gas leakage CAUTION Do not leak the gas in the air during Air Purging 58 LGE Internal Use Only Troubleshooting Guide 2 Balance refrigerant of the 3 way valve Gas leakage Outdoor unit AS 9 e Procedure 1 Confirm that both the liquid side and gas side valves are set to the back seat 2 Connect the charge set to the 3 way valve s port Leave the valve on the charge set closed Connect the charge hose to the service port Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 3 Open the valve Lo side on the charge set and discharge the refrigerant until the gauge indicates 0 kg cm G f there is no air in the refrigerant cycle the pressure when the air conditioner is not running is higher than 1 kg cm G discharge the refrigerant until the gauge indicates 0 5 to 1 kg cm G if this is the case it will not be necessary to apply a evacuatin Discharge the refrigerant gradually if it is discharged too suddenly the refrigeration oil will also be discharged LGE Internal Use Only Troubleshooting Guide 2 Evacuation All amount of refrigerant leaked 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
53. ging with vacuum pump 1 Preparation Check that each tube both liquid and gas side tubes between the indoor and outdoor units have been properly connected and all wiring for the test run has been completed Remove the service valve caps from both the gas and the liquid side on the outdoor unit Note that both the liquid and the gas side service valves on the outdoor unit are kept closed at this stage 2 Leak test Connect the manifold valve with pressure gauges and dry nitrogen gas cylinder to this service port with charge hoses CAUTION Be sure to use a manifold valve for air purging If it is not available use a stop valve for this purpose The Hi knob of the manifold valve must always be kept close 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 test for leaks with liquid soap CAUTION To avoid nitrogen entering the refrigerant system in a liquid state the top of the cylinder must be higher than its bottom when you pressurize the system Usually the cylinder is used in a vertical standing position Do a leak test of all joints of the tubing both indoor and outdoor and both gas and liquid side service valves Bubbles indicate a leak Be sure to wipe off the soap with a clean cloth Manifold valve Pressure OQO 2 After the system is found to be free of leaks relieve the nitrogen pressure by loosening
54. ht 2010 LG Electronics Inc All right reserved 37 LGE Internal Use Only Only for training and service purposes Operation The function of main control 1 Time delay Safety Control 3min The compressor operation is delayed for 3 minutes to balance the pressure of cycle Protection of compressor 5sec The indoor fan is delayed for 5 seconds when operating initially to prevent noises occurred by the vertical louver and wind e 2min The reversing valve is delayed for 2 minutes to prevent the refrigerant gas for abnormal noise when the heating operation is OFF or switched to the other operation mode while compressor is off While compressor is running it takes 3 5 seconds to switch 2 Chaos Swing Mode e By the Chaos Swing key input the vane automatically operates with the Chaos Swing or they are fixed to the desired direction e While in Chaos Swing mode the angles of cooling and heating cycle operations are different lt Cooling Mode gt Heating Mode gt CLOSED 3 Cooling Operation Mode When selecting the Cooling 3 Mode Operation the unit will operate according to the setting by the remote control and the operation diagram is shown below INTAKE AIR TEMP N SETTING TEMP 1 F LN SETTING TEMP 1 F ios Compressor OFF More than More than 3 minutes 3 minutes INDOOR FAN SPEED Setting Setting Setting fan EE M fan fan E COMPRESSOR m Protection of the indoor heat exchang
55. nd the capacity will be lower at low or medium fan speed High fan speed is recommended when you wish to cool the room quickly NOTICE Auto restart function has set enable as factory default But customer can set up by following this instruction To be disable function Press and hold the ON OFF button for 6 seconds then the buzzer sound 2 beep and the indicator lamp 1 blinks 4 times To be enable function Press and hold the ON OFF button for 6 seconds then the buzzer sound 2 beep and the indicator lamp 1 brights 4 times Copyright 2010 LG Electronics Inc All right reserved 43 Only for training and service purposes LGE Internal Use Only Operation Display Function Signal Receptor Receives the signals from the remote control Signal receiving sound two short beeps or one long beep Operation Indication Lamps On Off Lights up during the system operation Self diagnosis Function Error Error LED Code Indoor body operation LED Error contents SVC check point Indoor room temperature once i 1 pie Kan Indoor TH assy check lt gt a gt a gt ndoor pipe temperature 3sec 3sec 3sec thermistor open short twice Outd pei t 2 m i i utaoor pipe temperature Outdoor TH assy check Id K a K thermistor open short 3sec 3sec 5times 5 f Poor communication Communication line circuit ane check
56. ntake Air Temp lt 79 F gt Intake Air Temp 2 F 64 F x Intake Intake Air Temp lt 75 F gt Intake Air Temp 1 F Intake Air Temp lt 64 F gt 64 F e While in compressor off the indoor fan repeats low airflow speed and pause e While the intake air temp is between compressor on temp and compressor off temp 10 min dehumidification operation and 4 min compressor off repeat Compressor ON Temp 2 Setting Temp 1 F Compressor OFF Temp 2 Setting Temp 1 F e In 10 min dehumidification operation the indoor fan operates with the low airflow speed 40 Copyright 2010 LG Electronics Inc All right reserved LGE Internal Use Only Only for training and service purposes Operation 6 Heating Operation Mode only Heating Model The unit will operate according to the setting conditions by the remote controller The operation diagram is shown below INTAKE AIR TEMP SETTING TEMP 6 F E Cub N N SETTING TEMP Compressor ON minimum i Selecting Selecting COMPRESSOR ON OFF A point While the indoor pipe temperature is higher than 95 F indoor fan operates at low speed When the indoor pipe temperature becomes lower than 95 F indoor fan stops B point When the indoor pipe temperature is higher than 100 F 38 C fan operates at selected fan speed m Hot Start Control The indoor fan stops until the indoor pipe temperature will be reached at 82 F During heating operation if indoor pipe temperature
57. on pipe insulation material and the indoor unit pipe insulation material Bind them together with vinyl tape so that there may be no gap 2 Wrap the area which accommodates the rear piping housing section with vinyl tape 3 Bundle the piping and drain hose together by wrapping them with vinyl tape over the range within which they fit into the rear piping housing section Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes S A Indoor unit tubing Flare nu t Pipings Spanner fixed Flare nut Connection pipe Adhesive Vinyl tape narrow Plastic bands Insulation material cC iem Uf LL fu CC aea LT 7 Connecti pipe wide Connecting cable Vinyl tape narrow on 2 Indoor unit pipe Vinyl tape Wrap with vinyl tape Vinyl tape wi Drain hose Wrap with vinyl tape ide 22 LGE Internal Use Only Flaring work and connection of piping CAUTION Installation Information For right piping Follow the instruction below Good case Press on the upper side of clamp and unfold the tubing to downward slowly Di ur p h LITT i Bad case Following bending type from left to right may cause damage to the turbing Copyright
58. ondition for the component of Compressor Outdoor Fan Motor Copyright 2010 LG Electronics Inc All right reserved 66 Only for training and service purposes LGE Internal Use Only When indoor Fan does not operate Troubleshooting Guide Does the voltage of each terminals of CN MOTOR CONNECTOR in Indoor unit corresponds to values in the Table of page 72 d E Does the voltage of terminal of CN DC DC CONNECTOR in Indoor unit corresponds to the values in the table of page 72 Check connecting condition of the CN MOTOR d CONNECTOR Do the voltage of terminal of CN DC DC CONNECTOR in Outdoor unit corresponds to the values in the table of page 72 Check the pattern and the condition of Indoor unit PWB Ass y Check the interference of Indoor Fan e UP Check the patterns and the conditions of outdoor unit PWB Assy s Check the connecting condition and disconnection of connecting wires between Indoor and Outdoor unit Check the motor of Indoor Fan x ndoor Fan may be stopped in the Soft Dry Mode change to the Cooling Operation Mode x Indoor Fan is to be stopped when Indoor pipe coil termperature is lower than 79 F At that times Defrost indicator is turned on Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 67 LGE Internal Use Only Troublesho
59. onnecting cable Power supply cord Cover control Copyright 2010 LG Electronics Inc All right reserved 25 Only for training and service purposes LGE Internal Use Only Connecting the cable between indoor unit and outdoor unit Connection method of the ca A 7 8 Dismount two caps on the conduit panel Make a hole appropriate for the passage of connection cable through on cap by tool for low voltage line Pass the connecting cable through the hole Properly connect the cable on the terminal block Fix the connection cable with clamp cord provided on the unit not to have strain at the terminal when the connection cable is pulled outside up to a 35 pound weight Wind the vinyl tape round the connecting cable for sealing between the surface of the connection cable and cap Mount the taped part of cable on the cap Finally mount the holed cap with the wound cable on the conduit panel A WARNING Loose wiring may cause the terminal to overheat or result in unit malfunction A fire hazard may also exist Therefore be sure all wiring is tightly connected When connecting each power wire to the corresponding terminal follow instructions How to connect wiring to the terminals and fasten the wire tightly with the fixing screw of the terminal plate How to connect wiring to the terminals For solid core wiring or F cable 1 Cut the wire end with a wire
60. or Thermistor Thermistor Thermistor Functions Plasma Filter O O O O Prefilter washable anti fungus O O O O Auto Clean O O O O CHAOS Wind Auto Wind O O O O Steps Fan Cool Heat 3 4 3 4 3 4 38 3 4 3 Airflow Direction Control up amp down Auto Auto Auto Auto Airflow Direction Control left amp right Auto Auto Auto Auto Remocon Type Wireless LCD Wireless LCD Wireless LCD Wireless LCD Setting Temperature Cooling 18 30 18 30 18 30 18 30 Range Heating z 16 30 16 30 Auto Operation Micom Control O O G O Auto Changeover Micom Control O U U O Self Diagnosis O O O O Timer 24h On Off 24h On Off 24h On Off 24h On Off Sleep Operation O O O O Soft Dry Operation O O O O Restart Delay minute 3 3 3 3 Deice Control Defrost O O Hot Start O O Jet Cool O O O O Low Ambient Operation Special Function Dry Contact Network Functions Network Solution LGAP P1485 Note O Applied No relation R l l l For circuit breaker rating please conform to local standards wherever necessary Some of functions are slightly different depending upon models Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes The specification may be subject to change without notic for purpose of improvement 11 LGE Internal Use Only Product Specifications
61. oting Guide When Vertical 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 gt Normal Check the connecting condition of CN UP DOWN Connector Check the soldering condition on PWB of CN UP DOWN Connector l1 Check the operating circuit of the Vertical Louver Confirm that there is DC 12V between pin S RED of CN UP DOWN and GND Confirm that there is a soldering short at following terminals Between 77 79 79 and 60 of MICOM Between 4 and 7 of ICO2M Between 0 and 12 0T ICO1M Between 1 S 2 and s of CN UP DOWN l1 If there are no problems after above checks Confirm the assembly conditions that are catching and interfering parts in the rotation radial of the Vertical Louver Copyright 2010 LG Electronics Inc All right reserved 68 Only for training and service purposes LGE Internal Use Only Troubleshooting Guide When a comunication error occurs The operation indicator of Indoor unit blinks five times The red indicator of Outdoor unit blinks five times d Check the connecting wires between Indoor and Outdoor unit for the connecting error and the contacting condition d Check the installation condition of outdoor unit d
62. ou want to stop operation re press the button button Cooling Heat pump Model Model Room Temp 2 76 F 24 C 70 F 21 C s Room Temp 76 F 24 C Room Temp lt 70 F 21 C Operating mode Cooling Cooling Healthy Dehumidification Heating Indoor FAN Speed High High Healthy Dehumidification Rule High Setting Temperature 72 F 22 C 72 F 22 C 74 F 23 C 76 F 24 C Test operation During the TEST OPERATION the unit operates in cooling mode at high speed fan regardless of room temperature and resets in 18 minutes During test operation if remote controller signal is received the unit operates as remote controller sets If you want to use this operation Press and hold the ON OFF button for 3 5 seconds then the buzzer sound 1 beep If you want to stop the operation re press the button 9 Auto restart In case the power comes on again after a power failure Auto Restarting Operation is the function to operate procedures automatically to the previous operating conditions So there is no need of activating this function by pressing any key or button In the initial mode the fan operates at a low speed and the compressor starts 2 5 3 minutes later As the compressor starts the fan speed also resumes its previous setting mode Helpful information Fan speed and cooling capacity The cooling capacity indicated in the specification is the value when the fan speed is set to high a
63. pen panel front 1 Pull the upper part of the front panel 2 Lift up the panel 3 To detach the front panel remove the two screws at the lower part 4 Detach the front panel from the body 5 To detach the panel disconnect the connector at the upper part Panel Front onnector Cover pipe and cover side remove 1 Please remove the screw of the center tuning cover 2 Pull up the side cover of desired connecting direction then cover side is separated 3 Pick the pipe hole of the side cover CAUTION After removing the pipe hole cut the burr for safety eS When making pipe path through rear wall you don t need to pick the pipe hole Drain hose junction 1 Remove the rubber stopple in the desired drain direction 2 Insert drain hose into the handle of drain pan and join drain hose and connecting hose according to the figure by Only the desired direction a Connecting part Drain hose rubber cap Copyright 2010 LG Electronics Inc All right reserved 18 Only for training and service purposes LGE Internal Use Only Fixing Indoor Unit 1 Attach an Installation guide map on the 2 desired surface INSTALLATION GUIDE MAP 3 Make a hole with a diameter of 6mm and 4 depth of 30 35mm by piercing a screw point 5 Drive the fore plastic anchors into drilled points INg s Nee QN 7 Hang the hole of product at the upper Scre
64. re allowing several inches longer than the required length for wiring 7 Use lock nuts to secure the conduit tubes P NOTICE Connector trade size for this unit is 1 2 12 7mm Refer to How to connect wiring to the terminals for instructions on connecting depending on the wire type you are using A WARNING Be sure to comply with local codes while running the wire from the indoor unit to the outdoor unit size of wire and wiring method etc Every wire must be connected firmly No wire should be allowed to touch refrigerant tubing the compressor or any moving parts Power Supply Power AWG MIN Fuse or breaker source Capacity 10 115V 14 18 20A Model 9k 12k B Connecting the cable between indoor unit and outdoor unit Wiring Diagram Connecting cable Low voltage Outdoor Unit Terminal 6P Indoor Unit Terminal 4P Power supply To branch circuit een Ground L1 is neutral for 115V models NOTICE 1 c o shows field wiring 2 Separately wire the high and low voltage line 3 Use heat proof electrical wiring capable of withstanding temperatures up to 167 F 75 C 4 Use outdoor and waterproof connection cable rated more than 300V for the connection between indoor and outdoor unit For example Type SJO WA Outdoor unit Terminal block poe Conduit panel Over 5mm 4 C
65. roduct Low refrigerant levels may cause failure of product Install the drain hose to ensure that water is drained away properly Abad connection may cause water leakage Keep level even when installing the product To avoid vibration or water leakage Copyright 2010 LG Electronics Inc All right reserved 6 Only for training and service purposes LGE Internal Use Only Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods It may cause a problem for your neighbors E Operation Do not direct airflow at room occupants Don t sit in the draft This could damage your health Avoid personal injury There is risk of damage or loss of Safety Precautions Use two or more people to lift and transport the air conditioner Do not install the product where it will be exposed to sea wind salt spray directly It may cause corrosion on the product Corrosion particularly on the condenser and evaporator fins could cause product malfunction or inefficient operation Do not block the inlet or outlet of air flow Do not use the product for special purposes such as preserving foods works of art etc It is a consumer air conditioner not a precision refrigeration system It may cause product failure property Use a soft cloth to clean Do not use harsh detergents solvents etc There is risk of fire
66. ting and stopping operation TIME SETTING BUTTONS Used to adjust the time 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 check the room temperature 13 NEO PLASMA OPTIONAL Used to start or stop the plasma purification function 14 HORIZONTAL AIRFLOW DIRECTION CONTROL BUTTON OPTIONAL Used to set the desired vertical airflow direction 15 RESET BUTTON Used prior to resetting time 16 2nd F Button Used prior to using modes printed in blue at the bottom of buttons 17 AUTO CLEAN OPTIONAL Used to set Auto Clean mode 18 CFE SWITCH BUTTON Used to switch temperature reading from Centigrade to Fahrenheit 45 LGE Internal Use Only Disassembly E Disassembly WARNING Disconnect the unit from power supply before making any checks Be sure the power switch is set to OFF 1 To remove the Grille from the Chassis Pull the grille bottom the remove 2 securing screws Lift the both lower parts of panel front After pull down this panel a bit separate connecting wire with product Panel Front Connector 2 To remove the Control Box Before removing the control box be sure to disconnect the wires from PWB
67. use injury accident or damage to the product Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open Moisture may condense and wet or damage furnishings Do not turn the air conditioner ON or OFF by plugging or unplugging the power plug Do not place anything on the power cord e There is risk of fire or electrical shock shock LGE Internal Use Only Use a dedicated outlet for this appliance e There is risk of fire or electrical shock Safety Precautions Grasp the plug to remove the Do not place a heater or other cord from the outlet Do not appliances near the power cable touch it with wet hands There is risk of fire or electrical There is risk of fire and electric shock shock Do not allow water to run into electric parts It may cause There is risk of fire failure of the product or electric shock When flammable gas leaks turn off the gas and open a window for ventilation before turn the product on DO NOT use the telephone or turn switches on or off There is risk of explosion or fire Copyright 2010 LG Electronics Inc All right reserved 5 Only for training and service purposes Do not store or use flammable Do not use the product in a gas or combustibles near the air tightly closed space for a long conditioner time There is risk of fire or failure of product Oxygen deficiency
68. ut to a torque of 1 8 kg m Be sure to check for gas leakage ve LGE Internal Use Only Troubleshooting Guide 1 Re air purging Re installation J S Gas side EE Gas cylinder Outdoor unit Procedure 1 Confirm that both the liquid side valve and the gas side valve are set to the closed position 2 Connect the charge set and a gas cylinder to the service port of the Gas side valve Leave the valve on the gas oylinder closed 3 Air purging Open the valves on the gas cylinder and the charge set Purge the air by loosening the flare nut on the liquid side valve approximately 45 for 3 seconds then closing it for 1 minute repeat 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 5b Discharge the refrigerant Close the valve on the gas cylinder and discharge the refrigerant until the gauge indicates 3 to 5 kg cm g Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes 6 Disconnect the charge set and the gas cylinder and set the Liquid side and Gas side valves to the open position Be sure to use a hexagonal wrench to operate the valve stems 7 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 k
69. ve X ores E Ql Additional drain pipe Cx 28 70cm lt p ee Vinyl tape Narrow C LL Connecting cable x Optional part 14 LGE Internal Use Only Only for training and service purposes Installation Confirm The Refrigerant 1 Check the quality label on the indoor and outdoor unit 2 Make certain that the refrigerant is R 410A THIS PRODUCT CONTAINS R 410A REFRIGERANT 1 Different compressor oil R 410A Polyol ester R 22 Mineral Do not mix the existing mineral oil Do not apply used pipe tools and gauges covered with the existing mineral oil 2 Absorption of moisture Compressor s oil has the high absorption rate of moisture 3 Composition R 410A R32 R125 50 50wt NOTE Never mix with other refrigerants Example Split type 12 000 Btu h Capacity 120 79 100 100 93 be 84 80 76 60 40 20 0 i i l l R 410A 100 7096 50 30 0 R 22 0 30 50 70 100 4 High pressure 1 6 times higher than R 22 High Pressure refrigerant may cause personal injury Boiling Pt C Vapor pressure 25 C kg f cnf Vapor density 25 C kg m R 410A 51 4 15 9 64 R 22 40 8 9 6 44 4 Do not handle the pipe by yourself customer High pressure refrigerant may cause personal injury manifold gauge charging and any piping tools must be dedicated to R 410A systems Copyright 2010 LG Electronics Inc All right reserved 15 Only
70. with clean water Do not use the remote if the batteries have leaked They may burn or explode The chemicals in batteries could cause burns or other health hazards A ST ap Copyright 2010 LG Electronics Inc All right reserved 8 Only for training and service purposes LGE Internal Use Only Dimensions Dimensions A This symbol alerts you to the risk of electric shock A This symbol alerts you to hazards that could cause harm to the air conditioner WoA This symbol indicates special notes Indoor Unit E Hanger Hole B WwW 7 H Q S XS uh Pipe Hole Fix Hole Model INDOOR UNIT Dimension W mm inch 600 23 6 H mm inch 600 23 6 D mm inch 146 5 7 9 Copyright 2010 LG Electronics Inc All right reserved LGE Internal Use Only Only for training and service purposes Dimensions Outdoor Unit l Gas side 3 way valve Liquid side 2 way valve BM uo 9k 12k Models mra 770 30 3 540 21 3 MM 245 9 6 P G 285 11 2 i S 64 2 5 a nae 518 20 4 L4
71. ws and remove the map Falling attention i Ng FF TALL Ay Ney lt J Hanger hole Rear side of the w4 nmm Drill the piping hole with a o50mm hole core drill Drill the piping hole at either the right or the left with the hole slightly slanted to the outdoor side Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes Installation Look at suited horizon by horizontal meter on the horizontal setting line and fix lightly the map by adhesive tape Horizontality Drill the pierted part as a diameter of 50mm for connecting piping In case of piercing rear surface First Drive the two points of the upper parts by screws Leave 10mm for hanging the product Drive the lower parts after facing the hole of product with plastic anchors and fix completely the upper screws Plastic anchors 10 In case of nothing wrong connect the pipe and the wire Refer to installation manual WALL Indoor Outdoor uu Y Ep Elm EQ Pel EE 19 LGE Internal Use Only Flaring work and connection of piping ni Flaring work and connection of piping Flaring Work E Main cause for gas leakage is due to defect in flaring work Carry out correct flaring work in the following procedure Cutting the pipes and the cable 1 Use the piping kit accessory or the pipes purchased locally
72. y Troubleshooting Guide The product is not operate with the remote controller Turn on Main Power While the compressor has been stopped the compressor does not operate owing to the delaying function for 3 minutes after stopped a row cnet sy netroots is low speed by force When the compressor stopped Indoor Fan is driven by a low speed At this point the wind speed is not controlled by the remote controller When operated in the Sleeping Mode the wind speed is set to the Ju E Cause by the remote controller Caused by other parts except the remote controller Ms When the mark d is displayed in LCD screen replace battery Jb When the detect switch double key inside the remote controller door is fault it is impossible to operate temperature regulating A W and wind speed selecting S L Check the contact of CN DISP connector JE Check DISP PWB Ass y Voltage between CN DISP D Q DC 5V S Check the connecting circuit between the remote controller MICOM No amp R17 20 IR LED Q1 R16 2 2KO Check point Copyright 2010 LG Electronics Inc All right reserved 65 Only for training and service purposes Check the connecting circuit between PIN 63 R11L 1K C11L 680PF MICOM PIN Check Receiver Ass y LGE Internal Use Only Troubleshooting

Universal Air Conditioner SVC MANUAL(Exploded - LG Duct-Free

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