LG LS-C1863R Manual 

SVC MANUAL(Exploded View) MODEL : CAUTION Before Servicing the unit, read the safety precautions in General SVC manual. Only for authorized service personnel. Internal Use Only http://biz.lgservice.com LS-C1863R/W/B/D/M/CM0 LS-H1863R/W/B/D/M/CM0 LS-C2463R/W/B/D/M/CM0 LS-H2463R/W/B/D/M/CM0 LS-C1823R/W/B/D/M/CM0 LS-C1823R/W/B/D/M/CM2 LS-H1823R/W/B/D/M/CM0 LS-C2423R/W/B/D/M/CM0 LS-H2423R/W/B/D/M/CM0 AS-H2463R/D/M/WM1 AS-H1863B/M/R/WM0 AS-H2463R/D/M/WM1 LS-C2463B/C/D/M/RM1 LS-C1823RM1 LS-H1863B/D/M/R/WM1 AS-H1863*M3 AS-H2463*M3 LS-H1863*M3 LS-C2463*M3 LS-H2463*M3 LS-C1863*M3 LS-C2463*M4

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Air Conditioner Service Manual TABLE OF CONTENTS LG Model Name...............................................................................................................................................3 Safety Precautions..........................................................................................................................................4 Dimensions......................................................................................................................................................8 Symbols used in this Manual......................................................................................................................8 Indoor Unit.................................................................................................................................................8 Outdoor Unit...............................................................................................................................................9 Installation .....................................................................................................................................................12 Select the best Location ..........................................................................................................................12 Piping Length and Elevation.....................................................................................................................13 Fixing Installation Plate ............................................................................................................................14 Drill a Hole in the Wall..............................................................................................................................14 Flaring Work.............................................................................................................................................15 Connecting the Piping..............................................................................................................................16 Connecting the Cables to the Indoor Unit ................................................................................................22 Connecting the Cables to the Outdoor Unit..............................................................................................23 Checking the Drainage.............................................................................................................................23 Forming the Piping ...................................................................................................................................24 Air Purging ...............................................................................................................................................25 Air Purging with Vacuum Pump................................................................................................................25 Test Running ............................................................................................................................................27 Operation .......................................................................................................................................................28 Function of Controls .................................................................................................................................28 Display Function ......................................................................................................................................35 Self-diagnosis Function............................................................................................................................36 Remote Control Operations......................................................................................................................37 Disassembly ..................................................................................................................................................38 Indoor Unit................................................................................................................................................38 Troubleshooting Guide.................................................................................................................................41 Refrigeration Cycle Diagram ....................................................................................................................41 2-way, 3-way Valve .................................................................................................................................42 Cycle Parts...............................................................................................................................................47 Electronic Parts ........................................................................................................................................48 Schematic Diagram.......................................................................................................................................55 Electric Control Device.............................................................................................................................55 Wiring Diagram.........................................................................................................................................56 Components Location ..............................................................................................................................58 Product Specifications .................................................................................................................................60 Exploded View...............................................................................................................................................62

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only LG Model Name LG Model Name 1 2 - 3 4 5 6 7 8 9 10 Code Type Code of Model Meaning 1 Producing Center, A~Z L: Chang-won R22 N: India Refrigerant A: Chang-won R410A Z: Brazil C: Chang-won R407C D: Indonesia T: China X: Mexico K: Turkey R22 V: Vietnam U: China R410A E: Turkey R410A S: Out Sourcing H: Thailand 2 Product Type A~Z S: Split Type Air Conditioner 3 Cooling/Heating/Inverter A~Z C: Cooling only H: Heat pump X: C/O + E/Heater Z: H/P + E/Heater V: AC Inverter C/O N: AC Inverter H/P Q: DC Inverter C/O W: DC Inverter H/P 4, 5 Capacity 0~9 Cooling/Heating Capacity Ex. "09" ¡ 9,000 Btu/h 6 Electric Range 1~9 1: 115V/60Hz, A: 220V, 50Hz, 3Phase A~Z 2: 220V/60Hz B: 208~230V, 60Hz, 3Phase 3: 208-230V/60Hz C: 575V, 50Hz, 3Phase 5: 200-220V/50Hz D: 440~460, 60Hz, 3Phase 6: 220-240V/50Hz E: 265V, 60Hz 7: 110V, 50/60Hz F: 200V, 50/60Hz 8: 380-415V/50Hz 9: 380-415V/60Hz 7 Chassis 1~9 Name of Chassis of Unit Ex. 3 ¡ S3 Chassis 8 Look A~Z Look, Color (Artcool Model) 9 Function A~Z 10 Serial No. 1~9 LG Model De * ARTCOOL COLOR velopment Serial No. Basic A Basic+4Way B Plasma Filter C Plasma Filter+4 Way D Tele+LCD E Tele+LCD+Nano plasma+4Way F Nano Plasma F+(A/changeover)+A/clean+Low A G Nano Plasma F+(A/changeover)+A/clean+4way+Low A H Tele+LED+4way I Internet J Plasma F+4Way+Oxy generator K Nano Plasma F+(A/changeover)+A/clean L Nano Plasma F+(A/changeover)+A/clean+4way M Nano Plasma F+(A/changeover)+A/clean+PTC N Nano Plasma F+(A/changeover)+Autoclean+4way+PTC P Nano Plasma F+(A/changeover)+A/clean+4way+Low A+PTC Q Negative ION+A/Clean R (Nano)Plasma+Negative ION+A/Clean S 4way+(Nano)Plasma F+Negative ION+Healthy dehumidification+A/Clean T Nano Plasma F+4Way+(A/changeover)+A/clean+Oxy generator U 4way+(Nano)Plasma F+Negative ION+Healthy dehumidification+A/Clean+Oxy generator V Dry Contact W Wired Remocon 8 R Mirror W White Wood B Blue D Wood M Metal C Cherry N Walnut A Gogh S Sisley Q Quran K Mecca 2004

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. I Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications. I Meanings of symbols used in this manual are as shown below. This symbol indicates the possibility of death or serious injury. This symbol indicates the possibility of injury or damage to properties only. Be sure not to do. Be sure to follow the instruction. Always perform grounding. Don’t use a power cord, a plug or a loose socket which is damaged. For installation of the product, always contact the service center or a professional installation agency. • Otherwise, it may cause electrical shock. • Otherwise, it may cause a fire or electrical shock. • Otherwise, it may cause a fire, elec- trical shock, explosion or injury. Securely attach the electrical part cover to the indoor unit and the service panel to the outdoor unit. Always install an air leakage breaker and a dedicated switching board. Do not keep or use flammable gases or combustibles near the air conditioner. • If the electrical part cover of the indoor unit and the service panel of the outdoor unit are not attached securely, it could result in a fire or electric shock due to dust, water, etc. • No installation may cause a fire and electrical shock. • Otherwise, it may cause a fire or the failure of product. I Installation Wax Thinner

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Safety Precautions I Operation Do not modify or extend the power cord randomly. Take care so that the power cord may not be pulled during operation. Unplug the unit if strange sounds, smell, or smoke comes from it. • Otherwise, it may cause a fire or electrical shock. • Otherwise, it may cause a fire or electrical shock. • Otherwise, it may cause electrical shock or a fire. • Sharp edges may cause injury. • It will cause an electric shock or a fire due to heat generation. • Otherwise, it may cause a fire or electrical shock. Use caution when unpacking and installing. Do not share the outlet with other appliances. Do not use the damaged power cord. Ensure that an installation frame of the outdoor unit is not damaged due to use for a long time. Do not disassemble or repair the product randomly. Do not install the product at a place that ther is concern of falling down. • It may cause injury or an accident. • It will cause a fire or electrical shock. • Otherwise, it may result in personal injury.

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Safety Precautions Keep the flames away. Take the power plug out if neces- sary, holding the head of the plug and do not touch it with wet hands. Do not use the power cord near the heating tools. • Otherwise, it may cause a fire. • Otherwise, it may cause a fire or electrical shock. • Otherwise, it may cause a fire and electrical shock. Do not open the suction inlet of the indoor/outdoor unit dur- ing operation. Do not allow water to run into electrical parts. Never touch the metal parts of the unit when removing the fil- ter. • Otherwise, it may electrical shock and failure. • Otherwise, it may cause the failure of machine or electrical shock. • They are sharp and may cause injury. Do not step on the indoor/outdoor unit and do not put anything on it. Do not place a heavy object on the power cord. • It may cause an injury through dropping of the unit or falling down. • Otherwise, it may cause a fire or electrical shock. When the product is submerged into water, always contact the service center. Take care so that children may not step on the outdoor unit. • Otherwise, it may cause a fire or electrical shock. • Otherwise, children may be seriously injured due to falling down.

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Safety Precautions I Installation Install the drain hose to ensure that drain can be securely done. Install the product so that the noise or hot wind from the outdoor unit may not cause any damage to the neighbors. Always inspect gas leakage after the installation and repair of product. • Otherwise, it may cause water leak- age. • Otherwise, it may cause dispute with the neighbors. • Otherwise, it may cause the failure of product. Wax Thinner Keep level parallel in installing the product. Avoid excessive cooling and perform ventila- tion sometimes. • Otherwise, it may cause vibration or water leakage. • Otherwise, it may do harm to your health. Use a soft cloth to clean. Do not use wax, thin- ner, or a strong detergent. When gas leaks, open the window for ventila- tion before operating the unit. • The appearance of the air conditioner may deteriorate, change color, or develop surface flaws. • Otherwise, it may cause explosion, and a fire. I Operation

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Dimensions Dimensions Installation plate D H W W mm 1170 H mm 315 D mm 173 Model Dimension INDOOR UNIT Indoor Unit This symbol alerts you to the risk of electric shock. This symbol alerts you to hazards that may cause harm to the air conditioner. This symbol indicates special notes. NOTICE Symbols used in this Manual

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only W mm 870 870 H mm 655 800 D mm 320 320 L1 mm 370 370 L2 mm 340 340 L3 mm 25 25 L4 mm 630 775 L5 mm 25 25 L6 mm 546 546 L7 mm 162 162 L8 mm 162 162 L9 mm 54 54 L10 mm 74.5 74.5 L11 mm 79 79 LS-C1863R/W/B/D/M/CM0, LS-H1863R/W/B/D/M/CM0 LS-C2463R/W/B/D/M/CM0, LS-H2463R/W/B/D/M/CM0 LS-H2423R/W/B/D/M/CM0, AS-H1863B/M/R/WM0 AS-H2463B/M/R/WM0, LS-C2463B/C/D/M/RM1 LS-C1823RM1, LS-H1863B/D/M/R/WM1 LS-H1863*M3, LS-C2463*M3, LS-H2463*M3 LS-C1863*M3, LS-C2463*M4 AS-H2463R/D/M/WM1 Outdoor Unit Dimensions W L7 L6 L8 L9 D L1 L2 L3 L10 L11 L4 L5 H Gas side Liquid side MODEL DIM

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Dimensions W L2 L3 L1 D H L4 L5 Gas side (3-way valve) Liquid side (2-way valve) MODEL DIM unit W mm 840 H mm 577 D mm 276 L1 mm 287 L2 mm 64 L3 mm 518 L4 mm 10 L5 mm 100 LS-C1823R/W/B/D/M/CM2, AS-H1863*M3 LS-C2423R/W/B/D/M/CM0, AS-H2463*M3

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Dimensions W D L1 L2 H L3 L4 L5 L6 L7 L8 L9 L10 Liquid side 2-way valve Gas side 3-way valve MODEL DIM unit W mm 801 H mm 555 D mm 262 L1 mm 339 L2 mm 37 L3 mm 543.6 L4 mm 11.4 L5 mm 591 L6 mm 105 L7 mm 105 L8 mm 72.5 L9 mm 86.4 L10 mm 77 LS-C1823R/W/B/D/M/CM0 LS-H1823R/W/B/D/M/CM0

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Installation Installation 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 conve- niently 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 50cm. The unit should be installed as high as possible on the wall, allowing a minimum of 10cm from ceiling. 6. Use a stud finder to locate studs to prevent unneces- sary damage to the wall. Outdoor unit 1. If an awning is built over the unit to prevent direct sunlight or rain exposure, make sure that heat radia- tion from the condenser is not restricted. 2. Ensure that the space around the back and sides is more than 10cm. The front of the unit should have more than 70cm of space. 3. Do not place animals and plants in the path of the warm air. 4. Take the weight of the air conditioner into account and select a place where noise and vibration are min- imum. 5. Select a place where the warm air and noise from the air conditioner do not disturb neighbors. Select the best Location More than 10cm More than 5cm More than 2.3m More than 5cm CAUTION: Install the indoor unit on the wall where the height from the floor is more than 2 meters. More than 10cm More than 10cm More than 60cm More than 60cm More than 70cm

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Installation Piping Length and Elevation Outdoor unit Indoor unit A B Outdoor unit Indoor unit A B A Oil trap Outdoor unit Indoor unit B If piping length is more than 5m CAUTION: Capacity is based on standard length and maximum allowance length is on the basis of reliability. Oil trap should be installed every 5~7 meters. Pipe Size Capacity (Btu/h) GAS LIQUID Max. Length A (m) Additional Refrigerant (g/m) Max. Elevation B (m) Standard Length (m) 5k~14k 3/8"(Ø9.52) 1/4"(Ø6.35) 4 or 7.5 20 1/2"(Ø12.7) 1/4"(Ø6.35) 4 or 7.5 20 20 1/2"(Ø12.7) 1/4"(Ø6.35) 4 or 7.5 18k~28k 5/8"(Ø15.88) 1/4"(Ø6.35) 4 or 7.5 5/8"(Ø15.88) 3/8"(Ø9.52) 4 or 7.5 30k~38k 5/8"(Ø15.88) 3/8"(Ø9.52) 7.5 3/4"(Ø19.05) 3/8"(Ø9.52) 7.5 50 30 30 20 15 30 15 30 30 30 30 7 15 7 15 15 15 15

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Installation The wall you select should be strong and solid enough to prevent vibration 1. Mount the installation plate on the wall with type "A" screws. If mounting the unit on a con- crete wall, use anchor bolts. • Mount the installation plate horizontally by aligning the centerline using a level. 2. Measure the wall and mark the centerline. It is also important to use caution concerning the location of the installation plate-routing of the wiring to power outlets is through the walls typi- cally. Drilling the hole through the wall for piping connections must be done safely. Fixing Installation Plate Installation Plate Type "A" screw Installation plate Ø70mm Left rear piping Right rear piping C D B A Ø70mm Left rear piping Right rear piping B A D C Right rear piping B A D C Installation plate (SU) (SZ) (S3) Installation plate • Drill the piping hole with a ø70mm hole core drill. Drill the piping hole at either the right or the left with the hole slightly slanted to the outdoor side. Drill a Hole in the Wall 5-7mm (3/16"~5/16") Indoor WALL Outdoor A B C D SZ 35 33 156 33 (7k~9k) SU 92 44 67 44 (11k~14k) S3 58 3 292 3 (18k~26k) CHASSIS (Grade) Distance (mm) • For S3 chassis, the center of the unit is different from that of the Installation plate.

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Installation Flaring Work Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the following procedure. Cut the pipes and the cable. 1. Use the piping kit accessory or the pipes purchased locally. 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 1.5m longer than the pipe length. Burrs removal 1. Completely remove all burrs from the cut cross sec- tion of pipe/tube. 2. Put the end of the copper tube/pipe in a downward direction as you remove burrs in order to avoid drop- ping 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. Copper pipe 90° Slanted Uneven Rough Pipe Reamer Point down Flare nut Copper tube mm inch mm Ø6.35 1/4 0~0.5 Ø9.52 3/8 0~0.5 Ø12.7 1/2 0~0.5 Ø15.88 5/8 0~1.0 Ø19.05 3/4 1.0~1.3 Outside diameter A Bar Copper pipe Clamp handle Red arrow mark Cone Yoke Handle Bar "A"

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Installation Check 1. Compare the flared work with the figure by. 2. If a flared section is defective, cut it off and do flar- ing work again. Indoor 1. Prepare the indoor unit's piping and drain hose for installation through the wall. 2. Remove the plastic tubing retainer(see the illustra- tion by) and pull the tubing and drain hose away from chassis. 3. Replace only the plastic tubing holder 1, not the holder 2 in the original position. 1. Route the indoor tubing and the drain hose in the direction of rear right. 2. Insert the connecting cable into the indoor unit from the outdoor unit through the piping hole. • Do not connect the cable to the indoor unit. • Make a small loop with the cable for easy connec- tion later. 3. Tape the tubing, drain hose, and the connecting cable. Be sure that the drain hose is located at the lowest side of the bundle. Locating at the uper side can cause drain pan to overflow inside the unit. CAUTION: If the drain hose is routed inside the room, insulate the hose with an insula- tion material* so that dripping from "sweat- ing"(condensation) will not damage furniture or floors. *Foamed polyethylene or equivalent is rec- ommended. Inclined Inside is shiny without scratches Smooth all round Even length all round Surface damaged Cracked Uneven thickness = Improper flaring = Connecting the Piping For right rear piping Drain hose Connecting pipe Connecting cable Tape Drain hose Tubing holder 1 Tubing holder 2

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Installation 4. Indoor unit installation Hook the indoor unit onto the upper portion of the installation plate.(Engage the two hooks of the rear top of the indoor unit with the upper edge of the installation plate.) Ensure that the hooks are prop- erly seated on the installation plate by moving it left and right. Press the lower left and right sides of the unit against the installation plate until the hooks engage into their slots(clicking sound). Connecting the piping to the indoor unit and drain hose to drain pipe. 1. Align the center of the pipes and sufficiently tighten the flare nut by hand. 2. Tighten the flare nut with a wrench. 3. When extending the drain hose at the indoor unit, install the drain pipe. Wrap the insulation material around the connect- ing portion. 1. Overlap the connection pipe insulation material and the indoor unit pipe insulation material. Bind them together with vinyl tape so that there may be no gap. 2. Wrap the area which accommodates the rear piping housing section with vinyl tape. 3. Bundle the piping and drain hose together by wrap- ping them with vinyl tape for enough to cover where they fit into the rear piping housing section. Drain hose Connecting cable Indoor unit tubing Flare nut Pipes Wrench Indoor unit tubing Open-end wrench (fixed) Connection pipe Flare nut mm inch kg.m Ø6.35 1/4 1.8 Ø9.52 3/8 4.2 Ø12.7 1/2 5.5 Ø15.88 5/8 6.6 Outside diameter Torque Vinyl tape(narrow) Adhesive Drain pipe Indoor unit drain hose Plastic bands Insulation material Vinyl tape(narrow) Connection pipe Connecting cable Vinyl tape (wide) Wrap with vinyl tape Indoor unit pipe Pipe Wrap with vinyl tape Drain hose Pipe Vinyl tape(wide)

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Installation 1. Route the indoor tubing and the drain hose to the required piping hole position. 2. Insert the piping, drain hose, and the connecting cable into the piping hole. 3. Insert the connecting cable into the indoor unit. • Don't connect the cable to the indoor unit. • Make a small loop with the cable for easy connec- tion later. 4. Tape the drain hose and the connecting cables. 5. Indoor unit installation • Hang the indoor unit from the hooks at the top of the installation plate. • Insert the spacer etc. between the indoor unit and the installation plate and separate the bottom of the indoor unit from the wall. Connecting the piping to the indoor unit and the drain hose to drain pipe. 1. Align the center of the pipes and sufficiently tighten the flare nut by hand. 2. Tighten the flare nut with a wrench. 3. When extending the drain hose at the indoor unit, install the drain pipe. For left rear piping Drain pipe Connecting cable 1 2 Installation plate Spacer Indoor unit 8cm Indoor unit tubing Flare nut Pipes Wrench Indoor unit tubing Connection pipe Flare nut Open-end wrench (fixed) Vinyl tape Adhesive Drain hose Indoor unit drain hose (narrow) mm inch kg.m Ø6.35 1/4 1.8 Ø9.52 3/8 4.2 Ø12.7 1/2 5.5 Ø15.88 5/8 6.6 Outside diameter Torque

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Installation Wrap the insulation material around the connect- ing portion. 1. Overlap the connection pipe heat insulation and the indoor unit pipe heat insulation material. Bind them together with vinyl tape so that there may be no gap. 2. Wrap the area which accommodates the rear piping housing section with vinyl tape. 3. Bundle the piping and drain hose together by wrap- ping them with cloth tape over the range within which they fit into the rear piping housing section. Reroute the pipings and the drain hose across the back of the chassis. Indoor unit installation 1. Remove the spacer. 2. Ensure that the hooks are properly seated on the installation plate by moving it left and right. 3. Press the lower left and right sides of the unit against the installation plate until the hooks engage into their slots(clicking sound). Plastic bands Insulation material Vinyl tape(narrow) Connection pipe Connecting cable Indoor unit piping Pipe Vinyl tape (wide) Wrap with vinyl tape Drain hose Vinyl tape(narrow) Pipe Wrap with vinyl tape(wide) Piping for passage through piping hole Drain hose Connecting cable

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Installation CAUTION: Installation Information For left piping. Follow the instruction below. Good case • Press on the upper side of clamp and unfold the tubing to downward slowly. Bad case • Following bending type from right to left may cause damage to the tubing.

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Installation Outdoor Align the center of the pipings and sufficiently tighten the flare nut by hand. Finally, tighten the flare nut with torque wrench until the wrench clicks. • When tightening the flare nut with torque wrench, ensure the direction for tightening follows the arrow on the wrench. mm inch kg.m Ø6.35 1/4 1.8 Ø9.52 3/8 4.2 Ø12.7 1/2 5.5 Ø15.88 5/8 6.6 Ø19.05 3/4 6.6 Outside diameter Torque Outdoor unit Liquid side piping (Smaller diameter) Gas side piping (Bigger diameter) Torque wrench

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Installation • Connect the cables to the indoor unit by connecting the wires to the terminals on the control board dividually according to the outdoor unit connection. (Ensure that the color of the wires of the outdoor unit and the terminal No. are the same as those of the indoor unit.) • Before connecting the cables to the terminal block, remove the cables in the holder of the control cover and do it. Connecting the Cables to the Indoor Unit. CAUTION: • The above circuit diagram is subject to change without notice. • The earth wire should be longer than the common wires. • When installing, refer to the circuit diagram behind the panel front of the indoor unit. • Connect the wires firmly so that they may not be pulled out easily. • Connect the wires according to color codes, referring to the wiring diagram. CAUTION: If a power plug is not used, provide a circuit breaker between power source and the unit as shown by. CAUTION: The power cord connected to the "A" unit should be selected according to the following specifications(Type "B" approved by HAR or SAA). The power connecting cable connecting the indoor and outdoor unit should be selected according to the following specifications (Type "B" approved by HAR or SAA). Air Conditioner Main power source Circuit Breaker Use a circuit breake or time delay fuse. NORMAL CROSS-SECTIONAL AREA 0.75mm2 30k, 32k 36k, 38k 0.75 0.75 Cable Type(B) H07RN-F H07RN-F NORMAL CROSS -SECTIONAL AREA Grade (mm2) (mm2) (mm2) 5k~9k 12k~14K 0.75 1.0 Unit(A) Indoor Indoor Cable Type(B) H05VV-F H05VV-F NORMAL CROSS -SECTIONAL AREA Grade 7k~14k 1.0 Cable Type(B) H07RN-F NORMAL CROSS -SECTIONAL AREA Grade

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Installation 1. Remove the control cover from the unit by loos- ening the screw. Connect the wires to the terminals on the control board individually. 2. Secure the cable onto the control board with the cord clamp. 3. Refix the control cover to the original position with the screw. 4. Use a recognized circuit breaker "A" between the power source and the unit. A disconnecting device to adequately disconnect all supply lines must be fitted. Outdoor Unit Cover control Cord clamp 1(L) 2(N) 3 4 1(L) 2(N) 3 4 CASE 1 CASE 2 Connecting cable 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) See to 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. (Refer to page 24)) 7) Always install an earth leakage 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, fuse breaking, disturbance of the normal func- tion 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 in each active(phase) conductors. 7ks~18k ~26k ~30k ~38k 15 20 30 40 Circuit Breaker (A) Grade Connecting the Cables to the Outdoor Unit

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Installation Checking the Drainage Forming the Piping 1. Checking the drainage. • Pour a glass of water on the evaporator. • Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit. 2. Drain piping • The drain hose should point downward for easy drain flow. • Do not make drain piping like the following. 1. Form the piping by wrapping the connecting portion of the indoor unit with insulation materi- al and secure it with two 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. 2. In cases where the outdoor unit is installed below the indoor unit perform the following. • Tape the piping, drain hose and connecting cable from down to up. • Secure the tapped piping along the exterior wall using saddle or equivalent. 3. In cases where the Outdoor unit is installed above the Indoor unit perform the following. • Tape the piping and connecting cable from down to up. • Secure the taped piping along the exterior wall. Form a trap to prevent water entering the room. • Fix the piping onto the wall by saddle or equiva- lent. Taping Drain hose Pipings Connecting cable Trap is required to prevent water from entering into electrical parts. Seal small openings around pipings with a gum type sealer. Seal a small opening around the pipings with gum type sealer. Trap Trap Downward slope Do not raise Accumulated drain water Tip of drain hose dipped in water Air Waving Water leakage Water leakage Ditch Less than 50mm gap Water leakage Drain pan Drain hose Leakage checking Connecting area drain hose Leakage checking

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Installation 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. Air and moisture remaining in the refrigerant system have undesirable effects as indicated below. • Pressure in the system rises. • Operating current rises. • Cooling(or heating) efficiency drops. • Moisture in the refrigerant circuit may freeze and block capillary tubing. • Water may lead to corrosion of parts in the refrig- eration system. Therefore, the refrigerant system must be leak test- ed and evacuated to remove any noncondensables and moisture from the system. 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. • Pressurize the system to no more than 150 P.S.I.G. with dry nitrogen gas and close the cylin- der valve when the gauge reading reached 150 P.S.I.G. Next, test for leaks with liquid soap. • 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. • After the system is found to be free of leaks, relieve the nitrogen pressure by loosening the charge hose connector at the nitrogen cylinder. When the system pressure is reduced to normal, disconnect the hose from the cylinder. Lo Hi Indoor unit Outdoor unit Manifold valve Charge hose Nitrogen gas cylinder(in vertical standing position) Pressure gauge 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. Air Purging Air Purging with Vacuum Pump

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Installation 3. Evacuation • Connect the charge hose end described in the pre- ceding 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 tub- ing length and capacity of the pump. The following table shows the time required for evacuation. • When the desired vacuum is reached, close the "Lo" knob of the manifold valve and stop the vacu- um pump. 4. Finishing the job • With a service valve wrench, turn the valve stem of liquid side valve counter-clockwise to fully open the valve. • Turn the valve stem of gas side valve counter- clockwise to fully open the valve. • Loosen the charge hose connected to the gas side service port slightly to release the pressure, then remove the hose. • 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. • Replace the valve caps at both gas and liquid side service valves and fasten them tight. This completes air purging with a vacuum pump. The air conditioner is now ready to test run. (1) Remove the caps from the 2-way and 3-way valves. (2) Remove the service-port cap from the 3-way valve. (3) To open the 2-way valve turn the valve stem coun- terclockwise 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 connec- tions by a soft brush to check for leakage of the connecting points of the piping. (5) If bubbles come out, the pipes have leakage. Soap water method Required time for evacuation when 30 gal/h vacuum pump is used 10 min. or more 15 min. or more If tubing length is less than 10m (33 ft) if tubing length is longer than 10m (33 ft) Gas side Liquid side Cap Hexagonal wrench 3-way valve (Close) 3-way valve (Close) 2-way valve (Open) 2-way valve (Open) Indoor unit Outdoor unit Lo Hi Manifold valve Vacuum pump Pressure gauge Open Close

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Test Running 1. Check that all tubing and wiring have been 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 control if the system is not going to be used for a long time. Settlement of outdoor unit • Anchor the outdoor unit with a bolt and nut(ø10mm) tightly and horizontally on a concrete or rigid mount. • 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. • In the case when the vibration of the unit is con- veyed to the hose, secure the unit with an anti- vibration bushing. Evaluation of the performance Operate unit for 15~20 minutes, then check the system refrigerant charge: 1. Measure the pressure of the gas side service valve. 2. Measure the temperature of the intake and discharge of air. 3. Ensure the difference between the intake tempera- ture and the discharge is more than 8°C(46°F) (Cooling) or (Heating). 4. For reference; the gas side pressure of optimum condition is as below.(Cooling) If the actual pressure is higher than shown, the system is most likely over-charged, and charge should be removed. If the actual pres- sure are lower than shown, the system is most likely undercharged, and charge should be added. The air conditioner is now ready for use. NOTICE NOTICE Bolt Tubing connection Discharge temperature Discharge air Intake temperature R-22 35°C (95°F) 4~5kg/cm 2G(56.8~71.0 P.S.I.G.) R-410A 35°C (95°F) 8.5~9.5kg/cm 2G(120~135 P.S.I.G.) Outside ambient TEMP. Refrigerant The pressure of the gas side service valve. This is performed when the unit is to be relocated or the refrigerant circuit is serviced. Pump Down means collecting all refrigerant in the outdoor unit without loss in refrigerant gas. CAUTION: Be sure to perform Pump Down procedure with the unit 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 from the manifold hose using the refrigerant gas. 3. Close the liquid side service valve(all the way in). 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/cm2 G(14.2 to 7.1 P.S.I.G.), fully close the gas side valve stem and then quickly turn off the unit. At that time, Pump Down has been completed and all refrigerant gas will have been collected in the outdoor unit. PUMP DOWN Installation

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Operation DISPLAY 1) C/O Model (high quality LCD remote controller supplied) Operation Indicator • On while in appliance operation, off while in appliance pause Timer Indicator • On while in timer mode (on/off) and in sleep timer mode, off when timer mode is completed or canceled. Comp. Running Indicator • While in appliance operation, on while in outdoor unit compressor running, off while in compressor off Plasma Indicator • On while in plasma mode, off while plasma mode is canceled. Auto restart Indicator • On while auto restart mode, off while auto restart mode is canceled. 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. If your want to use this operation, press the Auto Restart Button. Power(Forced Operation) • Operation starts, when this button is pressed and stops when you press the button again. 2) H/P Model (high quality LCD remote controller supplied) Operation Indicator • On while in appliance operation, off while in appliance pause Timer Indicator • On while in timer mode (on/off) and in sleep timer mode, off when timer mode is completed or canceled Defrost Indicator • Off except when hot start during heating mode operation or while in defrost control. Plasma Indicator • On while in plasma mode, off while plasma mode is canceled. Auto restart Indicator • On while auto restart mode, off while auto restart mode is canceled. 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. If your want to use this operation, press the Auto Restart Button. Power(Forced Operation) • Operation starts, when this button is pressed and stops when you press the button again. I Cooling Mode Operation • When the intake air temperature reaches 0.5°C below the setting temp, the compressor and the outdoor fan stop. • When it reaches 0.5°C above the setting temp, they start to operate again. Compressor ON Temp=> Setting Temp+0.5°C Compressor OFF Temp => Setting Temp-0.5°C • While in compressor running, operating with the airflow speed set by the remote controller. While in compressor not running, operating with the low airflow speed regardless of the setting. Function of Controls Operation

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only I Healthy Dehumidification Mode • When the dehumidification operation input by the remote controller is received, the intake air temperature is detected and the setting temp is automatically set according to the intake air temperature. 26°C ≤ Intake Air Temp => 25°C 24°C ≤ Intake Air Temp < 26°C => Intake Air Temp-1°C 18°C ≤ Intake Air Temp < 24°C => Intake Air Temp-0.5°C Intake Air Temp < 18°C => 18°C • While in compressor off, the indoor fan repeats low airflow speed and pause. • 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. => Setting Temp+0.5°C Compressor OFF Temp. => Setting Temp-0.5°C • In 10-min dehumidification operation, the indoor fan operates with the low airflow speed. I Heating Mode Operation • When the intake air temp reaches +3°C(+4°C) above the setting temp, the compressor is turned off. When below the setting temp, the compressor is turned on. Compressor ON Temp. => Setting Temp.(+2°C) Compressor OFF Temp. => Setting Temp.+3°C(+4°C) • While in compressor on, the indoor fan is off when the indoor pipe temp. is below 26®¨C , when above 28°C , it operates with the low or setting airflow speed (while in sleep mode, with the medium airflow speed). • While in compressor off, the indoor fan is off when the indoor pipe temp is below 33°C , when above 35°C , it operates with the low airflow speed. • If overloaded while in heating mode operation, in order to prevent the compressor from OLP operation, the out- door fan is turned on/off according to the indoor pipe temp. • While in defrost control, both of the indoor and outdoor fans are turned off. I Defrost Control • While in heating mode operation in order to protect the evaporator pipe of outdoor unit from freezing, reversed to cooling cycle to defrost the evaporator pipe of the outdoor unit. • Defrost control is available 30 minutes later since heating mode operation started, and it will not prolong over 6 minutes. • Deicing starts only when the outdoor pipe temperature falls below -6°C after 30 minutes passed from starting of heating operating and more than 10 minutes operation of compressor. • Deicing ends after 6 minutes passed from starting of deice operation or when the outdoor pipe temperature rises over 12°C even if before 6 minutes. I Fuzzy Operation (C/O Model) • According to the temperature set by Fuzzy rule, when the intake air temp is 0.5°C or more below the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor is turned on. Compressor ON Temp => Setting Temp+0.5°C Compressor OFF Temp => Setting Temp+0.5°C • At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the intake air temp at that time. Operation

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Operation 26°C ≤ Intake Air Temp => 25°C 24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C 22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.5°C 18°C ≤ Intake Air Temp<22°C => Intake Air Temp Intake Air Temp<18°C => 18°C • When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature automatically according to the Fuzzy rule. • While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temper- ature I Fuzzy Operation (H/P Model) • When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed since the operation off, the operation mode is selected. • When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and only the indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake air temp at that moment as follows. 24°C ≤ Inatake Air Temp => Fuzzy Operation for Cooling 21°C ≤ Inatake Air Temp<24°C => Fuzzy Operation for Dehumidification Inatake Air Temp<21°C => Fuzzy Operation for Heating • If any of the operation modes among cooling / dehumidification / heating mode operations is carried out for 10 sec or longer before Fuzzy operation, the mode before Fuzzy operation is operated. 1) Fuzzy Operation for Cooling • According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more below the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor is turned on. Compressor ON Temp => Setting Temp+0.5°C Compressor OFF Temp => Setting Temp+0.5°C • At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the intake air temp at that time. 26°C ≤ Intake Air Temp => 25°C 24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C 22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.5°C 18°C ≤ Intake Air Temp<22°C => Intake Air Temp Intake Air Temp < 18°C => 18°C • When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature automatically according to the Fuzzy rule. • While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature. 2) Fuzzy Operation for Dehumidification • According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more below the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor is turned on. Compressor ON Temp => Setting Temp+0.5°C Compressor OFF Temp => Setting Temp+0.5°C

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only • At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the intake air temp at that time. 26°C ≤ Intake Air Temp => 25°C 24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C 22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.5°C 18°C ≤ Intake Air Temp<22°C => Intake Air Temp Intake Air Temp < 18°C => 18°C • When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature automatically according to the Fuzzy rule. • While in Fuzzy operation, the airflow speed of the indoor fan repeats the low airflow speed or pause as in dehu- midification operation. 3) Fuzzy Operation for Heating • According to the setting temperature selected by Fuzzy rule, when the intake air temp is 3°C(+4°C) or more above the setting temp, the compressor is turned off. When below the setting temp, the compressor is turned on. Compressor ON Temp => Setting Temp(+2°C) Compressor OFF Temp => Setting Temp + 3°C(+4°C) • At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the intake air temp at that time. 20°C ≤ Intake Air Temp => Intake Air Temp + 0.5°C Intake Air Temp < 20°C => 20°C • When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, the Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature automatically according to the Fuzzy rule. • While in Fuzzy operation, the airflow speed of the indoor fan is set to the high or the medium according to the intake air temperature and the setting temperature. I Airflow Speed Selection • The airflow speed of the indoor fan is set to high, medium, low, or chaos by the input of the airflow speed selec- tion key on the remote controller. I On-Timer Operation • When the set time is reached after the time is input by the remote controller, 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. I Off-Timer Operation • When the set time is reached after the time is input by the remote controller, 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. Operation

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Operation I Off-Timer <=> On-Timer Operation • When the set time is reached after the on/off time is input by the remote controller, the on/off-timer operation is carried out according to the set time. I 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 controller 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 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. I Chaos Swing Mode • By the Chaos Swing key input, the vane automatically operates with the Chaos Swing or they are fixed to the desired direction. I Chaos Natural Wind Mode • When the Chaos Natural Wind mode is selected and then operated, the high, medium, or low speed of the air- flow mode is operated for 2~15 sec randomly by the Chaos Simulation.” I Jet Cool Mode Operation (C/O Model) • If the Jet Cool key is input at any operation mode while in appliance operation, the Jet Cool mode operates. • In the Jet Cool mode, the indoor fan is operated at 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. • During the JET COOL function at any moment, the A/C starts to blow the cool air with side louvers closed at extremely high speed for 30 minutes setting the room temp. automatically to 18°C. I Jet Cool Mode Operation (H/P Model) • 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 at 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. • During the JET HEAT function at any moment, the A/C starts to blow the hot air with side louvers closed at extremely high speed for 60 minutes setting the room temp. automatically to 30°C. CLOSED OPEN < Cooling Mode > 7° CLOSED OPEN < Heating Mode > 7°

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only I Auto Restarting Operation • When the power is restored after a sudden power failure while in appliance operation, the mode before the power failure is kept on the memory and the appliance automatically operates in the mode on the memory. • Operation Mode that is kept on the memory - State of Operation ON/OFF - Operation Mode/Setting Temp/Selected Airflow Speed - Sleep Timer Mode/Remaining Time of Sleep Timer (unit of hour) I Forced Operation • Operation procedures when the remote control can't be used. • The operation will be started if the power button is pressed. • If you want to stop operation, re-press the button. • While in forced operation, the key input by the remote control has no effect and the buzzer sounds 10 times to indicate the forced operation. I Test operation • During the TEST OPERATION, the unit operates in cooling mode at high speed fan, regardless of room tem- perature and resets in 18±1 minutes. • During test operation, if remote controller signal is received, the unit operates as remote controller sets. If you want to use this operation, open the front panel upward and Press the power button let it be pressed for about 3 seconds. • If you want to stop the operation, re-press the button. I Protection of the evaporator pipe from frosting • If the indoor pipe temp is below 0°C in 7 min. after the compressor operates without any pause while in cooling cycle operation mode, the compressor and the outdoor fan are turned off in order to protect the indoor evapo- rator pipe from frosting. • When the indoor pipe temp is 7°C or higher after 3 min. pause of the compressor, the compressor and the out- door fan is turned on according to the condition of the room temperature. I Buzzer Sounding Operation • When the appliance-operation key is input by the remote control, the short "beep-beep-" sounds. • When the appliance-pause key is input by the remote control, the long "beep – beep" sounds. • When a key is input by the remote control while the slide switch on the main unit of the appliance is on the forced operation position, the error sound "beep-beep-beep-beep-beep-" is made 10 times to indicate that the remote control signal cannot be received. Operation Heat pump Model Cooling Model Room Temp. ≥ 24°C 21°C ≤ Room Temp. < 24°C Room Temp. < 21°C Operating mode Cooling Cooling Healthy Dehumidification Heating Indoor Fan Speed High High High High Setting Temperature 22°C 22°C 23°C 24°C

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Operation I Air Cleaner Operation • When an air cleaner function is selected during Air Conditioner operation - Plasma air cleaner function will be operated while in any operation mode with selecting the function. - The function is to be stopped while it is operating with selecting the function. • When an air cleaner function is selected during operation off - The function will be only operated. • When inlet grille of air conditioner is opened during plasma operation, High Voltage Generator(H.V.B) is to be stopped. When inlet grille of air conditioner is closed during plasma operation, High Voltage Generator(H.V.B) will be operated again.

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Operation Display Function 1. Heating Model 2. Cooling Model • Cooling, Soft Dry, Fan, Heating • Cooling, Soft Dry, Fan • Sleep Mode • Sleep Mode • Timer Mode • Timer Mode • Hot-start, Defrost Operation Indicator Timer Indicator Sleep Timer Indicator Defrost Indicator Operation Indicator Timer Indicator Sleep Timer Indicator Outdoor Unit Operation

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Operation Self-diagnosis Function 3sec 3sec 3sec (once) 3sec 3sec (twice) 3sec (5times) Error Code 1 2 5 Error Display LED (Indoor body operation LED) Error contents • Indoor room temperature thermistor open/short • Indoor pipe temperature thermistor open/short. • Outdoor pipe temperature thermistor open/short. • Poor communication. • Indoor Thermistor assembly check • Outdoor Thermistor assembly check • Communication line/circuit check SVC check point

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Remote Control Operations ON OFF CANCEL SET 1 3 5 4 9 10 12 14 16 7 2 8 13 15 11 6 Cooling Operation Auto Operation or Auto Changeover Healthy Dehumidification Operation Flip-up door (opened) Heating Operation Signal transmitter • Cooling Model( ), Heat Pump Model( ) 17 AUTO CLEAN The controls will look like the following. Operation Mode 1. START/STOP BUTTON Operation starts when this button is pressed and stops when the button is pressed again. 2. OPERATION MODE SELECTION BUTTON Used to select the operation mode. 3. ROOM TEMPERATURE SETTING BUTTONS Used to select the room temperature. 4. INDOOR FAN SPEED SELECTOR Used to select fan speed in four steps low, medium, high and CHAOS. 5. JET COOL/HEATING(OPTIONAL) Used to start or stop the speed cooling. (Speed cooling/heating operates at super high fan speed in cooling/heating mode.) 6. CHAOS SWING BUTTON Used to stop or start louver movement and set the desired up/down airflow direction. 7. ON/OFF TIMER BUTTONS Used to set the time of starting and stopping opera- tion. 8. TIME SETTING BUTTONS Used to adjust the time. 9. TIMER SET/CANCEL BUTTON Used to set the timer when the desired time is obtained and to cancel the Timer operation. 10. SLEEP MODE AUTO BUTTON Used to set Sleep Mode Auto operation. 11. AIR CIRCULATION BUTTON Used to circulate the room air without cooling or heating. 12. ROOM TEMPERATURE CHECKING BUTTON Used to check the room temperature. 13. NANO PLASMA(OPTIONAL) Used to start or stop the plasma-purification function. 14. HORIZONTAL AIRFLOW DIRECTION CONTROL BUTTON (OPTIONAL) Used to set the desired horizontal airflow direction. 15. RESET BUTTON Used prior to resetting time or after replacing bat- teries. 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. Operation Controls

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Disassembly Disassembly Indoor Unit WARNING: Disconnect the unit from power supply before making any checks. Be sure the power switch is set to "OFF" To remove the Grille from the Chassis. • Hold up Inlet Grille Horizentally. • To remove the Grille, pull the lower left and right side of the grille toward you (slightly tilted) and lift it straight upward. • To seperate connecter assembly and than to remove Inlet Grille assembly. 1. Before removing the control box, be sure to take out the wire screwed at the other end.

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Disassembly 2. To remove the Control Box. • Remove securing screws. • Pull the control box out from the chassis careful- ly. 3. To remove the Discharge Grille. • Unhook the discharge grille and pull the dis- charge grille out from the chassis carefully. 4. To remove the Evaporator. • Remove 3 screws securing the evaporator(at the left 2EA in the Eva Holder, at the right 1EA).

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Disassembly • Unhook the tab on the right inside of the chassis at the same time, slightly pull the evaporator toward you until the tab is clear of the slot. 5. To remove the Motor Cover • Remove 2 securing screw. • Pull the motor cover out from the chassis carefully. 6. To remove the Cross-Flow Fan • Loosen the screw securing the cross-flow fan to the fan motor (do not remove). • Lift up the right side of the cross-flow fan and the fan motor, separate the fan motor from the cross-flow fan. • Remove the left end of the cross-flow fan from the self-aligning bearing. Motor cover

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Troubleshooting Guide Troubleshooting Guide INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT HEAT EXCHANGE (EVAPORATOR) HEAT EXCHANGE (EVAPORATOR) HEAT EXCHANGE (CONDENSER) HEAT EXCHANGE (CONDENSER) COMPRESSOR COMPRESSOR ACCUMU LATOR GAS SIDE GAS SIDE 3-WAY VALVE LIQUID SIDE LIQUID SIDE 3-WAY VALVE CAPILLARY TUBE CAPILLARY TUBE CHECK VALVE (Heating Model only) COOLING HEATING REVERSING VALVE (Heating Model Only) (1) Cooling Only Models Refrigeration Cycle Diagram (2) Cooling & Heating Models

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Troubleshooting Guide 2-way, 3-way Valve 2-way Valve (Liquid Side) 3-way Valve (Gas Side) Shaft position Shaft position Service port Closed Closed Closed (with valve cap) (with valve cap) (with cap) Open Closed Open (counter-clockwise) (clockwise) (push-pin or with vacumm pump) Open Open Closed (with valve cap) (with valve cap) (with cap) Closed Open Open (clockwise) (counter-clockwise) (connected manifold gauge) Open Open Open (with charging cylinder) Open Open Open (with charging cylinder) Open Open Open Open Works Shipping Air purging (Installation) Operation Pumping down (Transfering) Evacuation (Servicing) Gas charging (Servicing) Pressure check (Servicing) Gas releasing (Servicing) 1. 2. 3. 4. 5. 6. Valve cap Open position Closed position Pin Service port Service port cap To outdoor unit Flare nut To piping connection To outdoor unit Hexagonal wrench (4mm) Open position Closed position To piping connection Flare nut Open (with charging cylinder) Open (with charging cylinder)

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Troubleshooting Guide • 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 set slightly to air purge from the charge hose. (5) Set the 2-way valve to the closed position. (6) Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 1kg/cm2g. (7) Immediately set the 3-way valve to the closed position. – Do this quickly so that the gauge ends up indi- cating 3 to 5kg/cm2g. (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. Lo Closed Purge the air Outdoor unit Indoor unit Liquid side Gas side CLOSE Open 2-Way valve 3-Way valve CLOSE Pumping Down

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Troubleshooting Guide Balance Refrigerant of the 3-way Valve (Gas leakage) • Procedure (1) Confirm that both the 2-way and 3-way 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. (3) Open the valve (Lo side) on the charge set and discharge the refrigerant until the gauge indi- cates 0 kg/cm2G. – If there is no air in the refrigerant cycle (the pressure when the air conditioner is not running is higher than 1 kg/cm2G), discharge the refrig- erant until the gauge indicates 0.5 to 1 kg/cm2G. if this is the case, it will not be neces- sary to apply a evacuatin. – Discharge the refrigerant gradually; if it is dis- charged too suddenly, the refrigeration oil will also be discharged. Lo Open Open 3-Way valve 3-Way valve Gas side CLOSE OPEN Outdoor unit Liquid side Indoor unit

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Troubleshooting Guide Evacuation (All amount of refrigerant leaked) • Procedure (1) Connect the vacuum pump to the center hose of charge set center hose (2) Evacuation for approximately one hour. – Confirm that the gauge needle has moved toward -76 cmHg (vacuum of 4 mmHg or less). (3) Close the valve (Lo side) on the charge set, turn off the vacuum pump, and confirm that the gauge needle does not move (approxima- tely 5 minutes after turning off the vacuum pump). (4) Disconnect the charge hose from the vacuum pump. – Vacuum pump oil. If the vacuum pump oil becomes dirty or depleted, replenish as needed. Lo Open Open Vacuum pump 3-Way valve Outdoor unit Liquid side Indoor unit Gas side 3-Way valve CLOSE OPEN

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Troubleshooting Guide Gas Charging (After Evacuation) • Procedure (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. (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 refriger- ant). 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 spec- ified amount of refrigerant, it can be charged with a little at a time (approximately 150g each time) while operating the air conditioner in the cooling cycle; however, one time is not suffi- cient, wait approximately 1 minute and then repeat the procedure (pumping down-pin). (4) Immediately disconnect the charge hose from the 3-way valve’s service port. – Stopping partway will allow the gas to be dis- charged. – If the system 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. \ 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. Lo Charging cylinder Outdoor unit Indoor unit Liquid side Gas side CLOSE Open 3-Way valve 3-Way valve OPEN Open Check valve (1)

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Troubleshooting Guide Trouble analysis 1. Check temperature difference between intake and discharge air and operating current. Temp. Difference Temp. difference : approx. 0°C Current : less than 80% of rated current Temp. difference : approx. 8°C Current : less than 80% of rated current Temp. difference : less than 8°C Current : over the reated current Temp. difference : over 8°C Operating Current • All amount of refrigerant leaked out. Check refrigeration cycle. • Refrigerant leakege Clog of refrigeration cycle Defective compressor • Excessive amount of refrigerant • 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 tem- perature difference is larger. 2. Check temperature and pressure of refrigeration cycle. 1. The suction pressure is usually 4.5~6.0 kg/cm2G(Cooling) at normal condition. 2. The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with putty. NOTICE NOTICE Suction pressure Temperature (Compared with (Compared with Cause of Trouble Description the normal value) the normal valve) Defective compressor Current is low. 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 Current is low. High Higher Cycle Parts

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Troubleshooting Guide Electronic Parts Product does not operate at all. (* Refer to Electronic Control Device drawing and Schematic diagram.) Turn off Main Power Turn on Main Power Does "beeping" sound is made from the Indoor Unit? Primarily, the operating condition of Micom is OK. Check the voltage of power(About AC 220V, 60Hz) (About AC 220/240V, 50Hz) • Main power's voltage • Voltage applied to the unit • Connecting method of Indoor/Outdoor connecting cable • Check PWB Assembly - Fuse - Pattern damage - Varistor(ZNR01N) Check the connection housing for contacting • Connector related to CN-POWER1, 2 • Connector related to CN-MOTOR • Connector contacting of Outdoor Fan/Compressor • Display PWB Assembly Check Check each load(Indoor/Outdoor Fan Motor, Compressor, Stepping Motor) and contacting condition of related connector Main PCB Board Operation Check Items • SMPS Transformer (Indoor unit) - Input Voltage - Output Voltage • IC04D(7805) Output • IC01A(Reset IC) OSC01B(8MHz) • Replace Trans • Replace IC04D • Replace faulty parts - About AC220V/240V±10% - Check the power voltage - About DC12V • DC +5V • Voltage of Micom No. 36, (DC +4.5V over) and Soldering condition. Content Remedy NO YES (After 10 seconds)

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Troubleshooting Guide The product does 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. Caused by other parts except the remote control Cause by the remote control When the mark( ) is displayed in LCD screen, replace battery. Check the contact of CN-D1, 2 connector. When the compressor stopped Indoor Fan is driven by a low speed. At this point the wind speed is not controlled by the remote controller. (When operated in the Sleeping Mode, the wind speed is set to the low speed by force.) Check Display PWB Assembly - Voltage between CN-D2 - : DC +5V Check the connecting circuit between the remote controller MICOM (No. 30) - R17(2Ω) - IR LED - TR - R16(2.2KΩ). Check point • Check the connecting circuit between PIN - R02L(1K) - C01L(680PF) - MICOM PIN 43 • Check Receiver Assembly

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Troubleshooting Guide Compressor/Outdoor Fan are unable to drive. Turn on Main Power Operate "Cooling Mode( )" by setting the desired temperature of the remote controller is less than one of the indoor temperature by 1°C at least. When in Air Circulation Mode, Compressor/Outdoor Fan is stopped. Check the sensor for indoor temperature is attached as close as to be effected by the temperature of Heat Exchanger(EVA). When the sensor circuit for indoor temperature and connector are in bad connection or are not engaged, Compressor/Outdoor Fan is stopped. • Check R02H(12.1k), R04H(6.2k), Micom Pin 26, 27 • Check the indoor temperature sensor is disconnected or not(About 10kΩ / at 25°C). Turn off Main Power • Check the electrical wiring diagram of outdoor side. • Check the abnormal condition for the component of Compressor/Outdoor Fan Motor. • Check the "open" or "short" of conmecting wires between indoor and outdoor. Check Relay(RY - COMP) for driving compressor. • When the power(About AC220V/240V) is applied to the connecting wire terminal support transferred to compressor, PWB Assembly is normal. • Check the circuit related to the relay. Check point COMP ON COMP OFF Between Micom(No. DC5V DC0V 63) and GND Between IC02M(No. 14) Below DC 1V About DC12V and GND (app)

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Troubleshooting Guide When Indoor Fan does not operate. Fan can't operate for dehumidifying mode. - Change operation for cooling mode. Turn off Main power Check the connection of CN-MOTOR1, 2 Check the Fan Motor Check the Fuse(AC250V/3.15A) Turn ON Main Power - Check PWM signal from Micom Pin 50 - Check On/Off signal from micom pin14. - Check Voltage of CN-Motor 1, 2 (pin ~ is about 15V)

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Troubleshooting Guide When Louvers do not operate. • Confirm that the Louver is normally geared with the shaft of Stepping Motor. • If the regular torque is detected when rotating the Louver with hands Normal • Check the connecting condition of CN-UD, LR1, LR2 Connector. • Check the soldering condition(on PWB) of CN-UD LR1, LR2 Connector. If there are no problems after above checks • Confirm the assembly conditions that are catching and interfering parts in the rotation radial of the Louvers. Check the operating circuit of the Louvers. • Confirm that there is DC +12V between pin of CN-UD and GND. • Confirm that there is a soldering short at following terminals. - Between , , , , , , , , , , , of MICOM - Between of IC02M - Between , of IC03M - Between , , , , , , , of IC04M - Between , , , of CN-UD/LR1/LR2 45 46 47 48 54 55 56 57 59 60 61 62

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Troubleshooting Guide When Heating does not operate Operate “Heating Mode( )” by setting the desired temperature of the remote control is higher than one of the indoor temperature by 2°C at least. In heating Mode, the indoor fan operates in case the pipe temperature is higher than 28°C. Check the connector of intake and pipe sensor(thermistors) • Check the related circuit of RY-4WAY • Check the indoor room temperature is disconnected or not (about 10KΩ/at 25°C). • Check the indoor pipe temperature is disconnected or not (about 5KΩ/at 25°C). Turn ON Main Power Check the DC voltage on the PWB ASSEMBLY • The details of check are as followings Check point Between Micom (NO.63) and GND Between IC02M (NO.14) and GND Comp ON DC 5V Below DC 1V Comp OFF DC 0V About DC 12V Check point Between Micom (NO.51) and GND Between IC03M (No.9) and GND 4 way ON DC 5V Below DC1V 4 way OFF DC 0V About 12V Check point Between Micom (NO.53) and GND Between IC03M (NO.11) and GND Fan ON DC 5V Below DC 1V Fan OFF DC 0V About DC 12V • Comp Relay. • 4 way Relay • Outdoor fan Relay

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Troubleshooting Guide Turn off Main Power • Check the electrical wiring diagram of outdoor side. • Check the abnormal condition for the component of Compressor/Outdoor Fan Motor, 4 way. • Check the "open" or "short" of connecting wires between indoor and outdoor.

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Schematic Diagram Schematic Diagram 36 13 23 17 15 16 14 18 1920 21 22 29 24 25 26 27 28 32 30 31. 33 34 35 58 11 9 10 12 6 7 5 4 8 64 1 2 3 63 62 61 60 59 41 38 40 39 37 43 44 45 42 52 57 56 55 54 53 49 51 50 48 47 46 IC01M R02F 20K 20K R02P KID65004AF 220 10V SD C10D + 103 50V C08D BZX55C11 C06D 25V SD C07D 104 50V 330 20K R02D ZD02D 1 3 AC PART 5V 1 CN-12V 2 CN-CONT 1 2 HVB 2 1 3 IC04D 78L05BP 7805 O I 12V L4 100nH 20K 2012 R11H~R14H 2 1 CN-HVB(BL) 3 SDA OJ1H R13H R11H R12H 5V R14H 4 A0 EEPROM OJ2H OJ3H 5 SCL WP Vcc 1 2 G A2 3 A1 8 7 6 20K R01P 1 RD Sub Part 3 4 PK YL OR 2 5 BL 1 HVB OUT 9 INDOOR FAN 3 4 2 CN-U/D(WH) 5 COMP 3.6V KIA7036P RESET CN-TH1(WH) D07D SD01D IC01D TNY266P STO2D-200 UG2D 472M 3KV DC LOW IC02D TLP421(BL) C05D 4 6 1/8W 2012 39 R03D 470/35V/SD C04D + S 104 C02D BP EN D 5 4 1 2 IC03D TLP421 BL 15uF 450V/SD C01D + INT 1/8W 2012 4 3 2 1 27k R04D 5V 1/4W 1N4148 D02D 300K R05D O/L OR3H SMPS OJ4H 5V 5V OR5H OR6H Hi Med OR4H Low 1 d V A d s s V A AVref AVdd NTC SCK-102 D05D 1N4007 R05H OR1H F1 OR2H F2 R25H R26H R24H R21H 5V 0.01 50V C01A R21H~R26H 12.1K, 1% R22H R23H 5V 2 10K 12.1K R02H 6.2K 1% R04H 1% 5V 15mH/1A NF01J 1/4W 3216 R06D 300K BD01D~04D 1N4007 47nM/275V/435D C03J 100nF/275V/436D METAL FILM METAL FILM C02J 250V/T2A 100nM/275V/436D METAL FILM C01J FUSE TVR10561 ZNR01J CN-TAB1 N 1 1 T-BLOCK RY-COMP G4A-1A-E-LG 4 3 2 1 2 1 INDOOR FAN 12V ROOM-TH PIPE-TH 2 1 1 3 2 3 4 4 680 R03J 1/2W TRAICS SM1L43 100,1/2W R01J 120, 1/2W R02J TR01J T1 1/4W R04J 560 ZNR02J TVR10561 TLP762JF IC01J 1 2 3 5 4 3 3 2 1 2 1 CN-MOTOR FAN INDOOR MOTOR KID65004AF 1 UPD780023AGC-C Vss0 5V Vdd0 8 NEC X2 Vss1 X1 INT0 INT1 BL 2 3 4 6 5 7 11 4WAY FAN 15 14 16 2 1 13 12 5 6 4 3 IC02M 10 9 7 8 12V YL OR RD PK 4 4 2 2 3 3 1 1 5 5 CN-L/R(BL) CSTS0800MG03-T2 R02A,20K 1M 5V R01B CRTL8.00MSOT OSC01B 3 1 Q01C 2SC5343 KTC3198-Y 5V INT 5V IC01A 12K R07D 56K R08D AC220~240V 50/60Hz SH-CAPACITOR 2012 2012 T2 VOLTAGE GND DC HIGH VOLTAGE GND DC HIGH VOLTAGE GND DC HIGH VOLTAGE GND DC LOW VOLTAGE GND KID65004AF IC01G 3 2 8 1 9 5 6 4 7 RD OR YL BL PK 3 3 2 2 1 1 CN-SUC(WH) 5 5 4 4 1 2 2 3 1 4 12V R06V 220 R05V 10K VFD DISPLAY KTB 1151-Y Q01V STEPPING MOTOR (UP/DOWN) SUCTION 1 STEPPING MOTOR STEPPING MOTOR SUCTION 2 12V 12V 12V SW PWB ASM BZ YL OR PK 2 2 3 3 4 4 5 5 3 3 RD OR BL 2 2 1 1 YL BL PK 5 5 4 4 RD 1 1 12V 1 1 2 3 3 2 7 5 6 8 9 5 7 6 5V CN-VFD(WH) C01F 50V 0.01 1K R01F C01L 50V 681 R02L,1K C03~04V 0.01 50V R01L 5.1K 2(N) 1(L) COMPRESSOR OUTDOOR FAN MOTOR RY-4WAY RY-FAN R03T 1K 102 C03T Q01T 5V A104S Q04T C104S 102 C02T Q06T A104S Q03T C104S 5V CN-TEL D01T 5V 1N4148 C01T 104 2 3 1 2 3 1 100 KRC107S KRA107S R02E 910 R03E 220 BZ01E C01E 100/25V + PKM17EPP-2002 12V Q02E KRC107S Q01E Q03E R01E BZ FREQ Bz Bz o2 5V 8 R04V,1K R03V,1K 2 2 3 3 1 1 5 5 4 4 1 1 L RY-O2 CN-TAB2 8 7 6 5 4 2 3 1 12V HVB OUT 2 1 3 2 1 3 12V E2 1K E3 1K 5V Vout Vout ZBF503D L1 SMD 2012 ����� ������� ������� ������� ����� ��� 4 4 4 4 3 3 2 2 1 1 2 2 3 3 4 4 1 1 7 7 6 6 11 10 C01Z 0.01 C02Z 0.01 5 11 10 9 8 7 6 Q02V KRA107S C07V 104 10V SD 220 C09D + 5 4 5 4 OPTION 6 6 JP11,330 Electric Control Device

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only AS-H1863*M3 AS-H2463*M3 LS-H1863*M3 LS-H2463*M3 LS-C1863*M3, LS-C2463*M4 Wiring Diagram Schematic Diagram Indoor Unit Heat pump Cooling only 3854A20238K FUSE AC250V/T2A CN-TH1(WH) TRIAC SH-CAPA. BL BR GN/YL BR YL OR BK CN-TAB1 CN-MOTOR CN-TAB2 CN-4WAY /FAN/O2 CN-SW/2 CN-SW/3 CN-STEP2 CN-STEP1 CN-MAIN CN-SW/1 RY-COMP. RY-4WAY RY-FAN FORCED OPERATON S/W SUC STEP MOTOR-1 ZNR THERMISTOR DISPLAY MOTOR MAIN PCB ASM POWER TO OUTDOOR UNIT TERMINAL BLOCK CONNECTOR PWB ASM BR BL BK RD GN/YL BR BL BK RD GN/YL 1(L) 2(N) 3 4 3 4 BL BR CN-U/D(WH) CN-DISP1 STEP MOTOR CN-L/R(BL) CN-HVB STEP MOTOR OPTION OPTION LIMIT S/W-1 LIMIT S/W-2 H.V.B A/CL RD RD BK BK SUC STEP MOTOR-2 3854A20238N FUSE AC250V/T2A CN-TH1(WH) TRIAC SH-CAPA. BL BR GN/YL BR YL OR BK CN-TAB1 CN-MOTOR CN-TAB2 CN-SW/2 CN-SW/3 CN-STEP2 CN-STEP1 CN-MAIN CN-SW/1 RY-COMP. FORCED OPERATON S/W SUC STEP MOTOR-1 ZNR THERMISTOR DISPLAY MOTOR MAIN PCB ASM POWER TO OUTDOOR UNIT INDOOR WIRING DIAGRAM TERMINAL BLOCK CONNECTOR PWB ASM BR BL GN/YL BR BL GN/YL 1(L) 2(N) 3 4 BL BR CN-U/D(WH) CN-DISP1 STEP MOTOR CN-L/R(BL) CN-HVB STEP MOTOR OPTION OPTION LIMIT S/W-1 LIMIT S/W-2 H.V.B A/CL RD RD BK BK SUC STEP MOTOR-2

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Schematic Diagram Outdoor Unit LS-C2423_Series LS-C2463_Series LS-C1823_Series LS-C1863*M3 LS-H1823_Series RD BR(OR) OPTION PTC YL BK (BR) C R S COMP. BK OR YL FAN MOTOR TP H C F TO INDOOR UNIT OUTDOOR WIRING DIAGRAM 3854A20167T TERMINAL BLOCK HIGH PRESSURE SWITCH SOLENOIDE VALVE BR BL GN/YL GN/YL GN/YL T/B CAPACITOR 1(L) 2(N) LS-C1823R/W/B/D/M/CM2 LS-C1863_Series LS-C2463_Series AS-H1863_Series AS-H2463_Series LS-H2423_Series LS-H2463_Series LS-H1863_Series LS-H2463*M3 AS-H1863RM0 C S R RD YL YL GN/YL GN/YL GN/YL BR BL BK RD YL YL BR(OR) BL BK FAN MOTOR BR BL BK RD HEATER RD BR BR WH BK(RD) BK(RD) RD T/B1 T/B3 T/B4 T/B2 REVERSING VALVE TERMINAL BLOCK TO INDOOR UNIT 3854A20167Q RY-S/CAPA RY-COMP SOFT STARTER PCB COMP. START CAPACITOR OPTION PTC CAPACITOR 4 H C F 3 4 3 1(L) 2(N) 3 4 AS-H2463R/D/M/WM1

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Schematic Diagram Components Location MAIN P.W.B ASSEMBLY (AC PART) • TOP VIEW 800V PWB ASM: 6871A10043 PWB: 6870A90177A • BOTTOM VIEW

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Schematic Diagram DISPLAY ASSEMBLY SUB P.W.B ASSEMBLY 1 1 1 CN-12V(WH) 1 CN-D6 CN-D7 1 CN-D8 CN-D5 1 1 1 1 CN-CON(WH) CN-SW(BL) 1 C01V PWB ASM:6871A20363 PWB:6870A90126B CN-D3 CN-D1 1 CN-D2 1 CN-D4 C02V

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Product Specifications Product Specifications Table-1 Model Name Item Unit Cooling Capacity Btu/h Heating Capacity Moisture Removal l/h Power Source Ø, V, Hz Cooling W Heating Running Cooling A Current Heating E.E.R. Cooling Btu/hW C.O.P Heating Refrigerant g Airflow Direction Control (Up & Down) Remocon Type inch(mm) Sleeping Operation Drain Hose Connecting Cable(p*mm2) Power Cord(p*mm2) 18,000 24,000 18,000 24,000 22,500 19,000 24,000 19,000 24,000 22,500 2 3 2 3 3 1, 220-240, 50 1, 220-240, 50 1, 220, 60 1, 220, 60 1, 220-240, 50 13 15.5 13 15.5 15.5 42 48 34 48 48 40 44 40 44 44 51 55 51 55 55 1,860 2,700 1,860 2,525 2,500 1,870 2,650 1,730 2,525 2,500 9.2 12.6 8.5 12 11.0 9.2 12.6 8.1 12 11.0 9.7 8.9 9.68 9.5 9 2.98 2.65 3.2 2.78 2.65 26.7 26.7 15.7 30 26.7 61 82.9 45 67.2 82.9 1170*315*170 1170*315*170 1170*315*170 1170*315*170 1170*315*170 870*655*320 870*655*320 801*555*262 870*655*320 870*655*320 13(28.7) 13(28.7) 13(28.7) 13(28.7) 13(28.7) 60(132) 60(132) 38 60(132) 60(132) 1310 1500 1360 1470 1480 O O O O O L.C.D Wireless L.C.D Wireless L.C.D Wireless L.C.D Wireless L.C.D Wireless 1/4(6.35) 3/8(9.52) 1/4(6.35) 3/8(9.52) 3/8(9.52) 1/2(12.7) 5/8(15.88) 5/8(15.88) 5/8(15.88) 5/8(15.88) O O O O O O O O O O 14:3*1.5 12:3*2.5 14:3*1.5 12:3*2.5 12:3*2.5 14:3*1.5 12:3*2.5 14:3*1.5 12:3*2.5 12:3*2.5 Air Circulation Noise Level Input m3/min dB (A)±3 Indoor Outdoor Indoor Outdoor Indoor Outdoor Indoor Outdoor Indoor Outdoor Liquid Gas Service Valve Motor Output Dimensions (W x H x D) Net. Weight W mm kg LS-H1863*M0 LS-H1863*M1 LS-H1863*M3 LS-H2463*M0 LS-H2463*M3 LS-H1823*M0 LS-H2423*M0 AS-H2463*M0

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Table-2 Product Specifications Model Name Item Unit Cooling Capacity Btu/h Heating Capacity Moisture Removal l/h Power Source Ø, V, Hz Cooling W Heating Running Cooling A Current Heating E.E.R. Cooling Btu/hW C.O.P Heating Refrigerant g Airflow Direction Control (Up & Down) Remocon Type inch(mm) Sleeping Operation Drain Hose Connecting Cable(p*mm2) Power Cord(p*mm2) 18,000 24,000 18,000 18,000 24,000 18,000 24,000 - - - - - 18,900 24,500 2 3 2 2 3 2 3 1, 220~240, 50 1, 220-240, 50 1, 220, 60 1, 220, 60 1, 220, 60 1,220~240,50 1,220~240,50 13 15.5 13 13 15.5 13 15.5 42 48 34 48 48 42 48 40 44 40 42 44 40 44 51 55 51 53 55 51 55 1,900 2,700 1,950 1,830 2,400 1,750 2,550 - - - - - 1,730 2,475 9.4 12.8 9 8.5 11 8 10.5 - - - - - 8 10.5 9.47 8.9 9.23 9.38 10 10.28 9.38 - - - - - 10.92 9.889 26.7 26.7 15.7 15.7 30 25.6 25.6 61 82.9 45 76.5 76.5 61 82.9 1170*315*170 1170*315*170 1170*315*170 1170*315*170 1170*315*170 1170*315*170 1170*315*170 870*655*320 870*655*320 801*555*262 870*577*276 840*577*276 870*655*320 870*800*320 13(28.7) 13(28.7) 13(28.7) 13(28.7) 13(28.7) 13(28.7) 13(28.7) 56(123.5) 60(132) 38 42(92.4) 47(103.6) 60(132) 65(140.5) 1,140 1,470 1,240 1,300 1,270 1,210 1,980 O O O O O O 0 L.C.D Wireless L.C.D Wireless L.C.D Wireless L.C.D Wireless L.C.D Wireless L.C.D Wireless L.C.D Wireless 1/4(6.35) 3/8(9.52) 1/4(6.35) 1/4(6.35) 3/8(9.52) 1/4(6.35) 3/8(9.52) 1/2(12.7) 5/8(15.88) 5/8(15.88) 5/8(15.88) 5/8(15.88) 1/2(12.7) 5/8(15.88) O O O O O O 0 O O O O O O 0 14:3*1.5 12:3*2.5 14:3*1.5 14:3*1.5 12:3*2.5 14:3*1.5 12:3*2.5 14:3*1.5 12:3*2.5 14:3*1.5 14:3*1.5 12:3*2.5 14:3*1.5 12:3*2.5 Air Circulation Noise Level Input m3/min dB (A)±3 Indoor Outdoor Indoor Outdoor Indoor Outdoor Indoor Outdoor Indoor Outdoor Liquid Gas Service Valve Motor Output Dimensions (W x H x D) Net. Weight W mm kg LS-C1863*M0 LS-C1863*M3 LS-C2463*M1 LS-C2463*M0 LS-C2463*M3 LS-C2463*M4 LS-C1823*M1 LS-C1823*M0 LS-C1823*M2 LS-C2423*M0 AS-H1863*M0 AS-H1863*M3 AS-H2463R/D/M/WM1 AS-H2463*M0 AS-H2463*M3

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Exploded View Exploded View 352116 352150 145200B 145200C 145200D 354210 147581 249951 264110 W0CZZA 733010 131410 146811A 135311 342800 267110 359011 159830 146811B 145200A 268711C 135316 146811B 268711D 152302 135516 268711B 35211B 266090 268711A 237900 263230 346810 352115 Indoor Unit 135313

Exploded View Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 352116 352150 145200B 145200C 145200D 354210 147581 249951 264110 W0CZZA 733010 131410 146811A 135311 342800 267110 359011 159830 146811B 145200A 268711C 135316 146811B 268711D 152302 135516 268711B 35211B 266090 268711A 263230 346810 352115 Indoor Unit(Panel Mirror Type) 135313

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Exploded View 554031 437212 435511 552202 552116 554160 550140 552203A 552203B 430411 435301 447910 552111 437210 559010 435512 546810 349600 561410 W0CZZB 649950 Applied for Heating Model Outdoor Unit

Exploded View Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 554031 437212 435511 552202 552116 554160 550140 552203A 552203B 430411 447910 552113 559010 546810 349600 561410 649950 Applied for Heating Model 437210 435301 Outdoor Unit (UM Chassis)

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Exploded View 554031 437212 435511 552202 552116 554160 550140 552203A 552203B 430411 435301 447910 552111 437210 559010 435512 546810 349600 561410 649950 Applied for Heating Model Outdoor Unit (UD Chassis)

Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 435300 435512 137213B 137213A 554031 552202 552116 435511 554160 561410 550140 552203B 552203A 430411 437210 649950 W0CZZB 552102 559010 435301 546810 447910 Applied for Heating Model Outdoor Unit Exploded View