Internal Use Only http://biz.lgservice.com LG Room Air Conditioner SVC MANUAL(Exploded View) MODELS : LS090CP(AS-C0914DH0) LS120CP(AS-C121E1H0) LS180CP(AS-C1835DM0) LS240CP(AS-C2435DM0) LS090HP(AS-H091E1H0) LS120HP(AS-H121E1H0) LS180HP(AS-H1835DM0) LS240HP(AS-H2435DM0) 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..........................................................................................................................................3 Dimensions......................................................................................................................................................9 Symbols Used in this Manual ..................................................................................................................
Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. ■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications. This symbol indicates the possibility of death or serious injury. This symbol indicates the possibility of injury or damage to properties only. ■ Meanings of symbols used in this manual are as shown below.
Safety Precautions Be cautious when unpacking and installing the product. For installation, always contact the dealer or an Authorized Service Center. Do not install the product on a defective installation stand. • Shape edges could cause injury. Be especially careful of the sharp edges. • There is risk of fire, electric shock, explosion, or injury. • It may cause injury, accident, or damage to the product. Be sure the installation area does not deteriorate with age.
Safety Precautions Do not place a heater or other appliances near the power cable. • There is risk of fire, failure of the product, and/or electric shock. 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 store of use flammable gas or combustibles near the air conditioner. • There is risk of fire or product failure.
Safety Precautions Ventilate the product from time to time when operating it together with a stove, etc. Unplug the appliance before performing cleaning or maintenance. 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 fire or electrical shock. • There is risk of electric shock. • There is risk of product damage or failure, or unintended operation.
Safety Precautions ■ Operation 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. Do not direct airflow at room occupants. • Avoid personal injury. • It may cause corrosion in the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation. • This could damage your health.
Dimensions Do not drink the water drained from the unit. Use a firm stool or ladder when cleaning or maintaining the air conditioner. Replace all the batteries in the remote. • It is not sanitary and could cause serious health issues. • Be careful and avoid personal injury. • There is risk of fire or explosion. ■ Disuse Do not recharge or disassemble the batteries. Do not dispose of batteries in a fire. If the liquid from the batteries gets onto your skin or clothes, wash it well with clean water.
Dimensions Dimensions Symbols Used in this Manual This symbol alerts you to the risk of electric shock. This symbol alerts you to hazards that could cause harm to the air conditioner. NOTICE This symbol indicates special notes. Indoor Unit H D W Installation plate Model Dimension 9 Btu Series (C/O) 9 Btu Series (H/P) 12 Btu Series W mm(inch) 840(33.1) 894(35.2) 894(35.2) H mm(inch) 270(10.6) 295(11.6) 295(11.6) D mm(inch) 153(6.0) 165(6.5) 165(6.5) Copyright ©2007 LG Electronics.
Dimensions H W D Installation plate Model Dimension 18 Btu Series 24 Btu Series W mm(inch) 1090(42.9) 1090(42.9) H mm(inch) 300(11.8) 300(11.8) D mm(inch) 178(7.0) 178(7.0) Copyright ©2007 LG Electronics. Inc. All right reserved.
Dimensions Outdoor Unit 1. 9k, 12k L2 D L1 W H L3 L5 Gas side (3-way valve) L4 Liquid side (2-way valve) DIM MODEL unit 9k, 12k W mm(inch) 770(30.3) H mm(inch) 540(21.3) D mm(inch) 245(9.6) L1 mm(inch) 287(11.3) L2 mm(inch) 64(2.5) L3 mm(inch) 518(20.4) L4 mm(inch) 10(0.4) L5 mm(inch) 100(3.9) Copyright ©2007 LG Electronics. Inc. All right reserved.
Dimensions 2. 18k, 24k L4 L1 L10 L9 H L3 L2 D W L6 L5 L7 MODEL L8 18k, 24k DIM W mm(inch) 870(34.3) H mm(inch) 655(25.8) D mm(inch) 320(12.6) L1 mm(inch) 370(14.6) L2 mm(inch) 25(1.0) L3 mm(inch) 630(24.8) L4 mm(inch) 25(1.0) L5 mm(inch) 546(21.5) L6 mm(inch) 162(6.4) L7 mm(inch) 162(6.4) L8 mm(inch) 54(2.1) L9 mm(inch) 74.5(2.9) L10 mm(inch) 79(3.1) Copyright ©2007 LG Electronics. Inc. All right reserved.
Introduction Introduction Symbols Used In This Manual This symbol alerts you to the risk of electric shock. This symbol alerts you to hazards that may cause harm to the air conditioner. NOTICE This symbol indicates special notes. Features Air Inlet Air Filter Front Panel Signal Receptor Air Intake Vents Connecting Wires Connecting Wires Air Intake Vents Piping Piping Air Outlet Vents Drain Hose Drain Hose Air Outlet Vents Base Plate Base Plate Copyright ©2007 LG Electronics. Inc.
Installation Installation Read carefully, and then follow step by step. Installation Parts Installation plate Type "A" screw and plastic anchor Type "B" screw Remote Control Holder Installation Tools Figure Name Figure Name Screw driver Ohmmeter Electric Drill Hexagonal wrench Measuring Tape, Knife Ammeter Hole Core Drill Gas Leak Detector Spanner Thermometer, Level Torque wrench Flaring Tool Set Copyright ©2007 LG Electronics. Inc. All right reserved.
Installation Installation Map NOTICE Installation parts you should purchase. Installation Plate Sleeve Bushing-Sleeve Putty(Gum Type Sealer) Bend the pipe as closely on the wall as possible, but be careful that it doesn't break. Air Discarge Vertical Air deflector Operation Indication Lamps/ Signal Receptor Vinyl tape(Wide) Forced Operation Button Saddle • Apply after carrying out a drainage test. • To carry out the drainage test, remove the air filters and pour water into the heat exchanger.
Installation Confirm The Refrigerant 1. Check the quality label on the indoor and outdoor unit. 2. Make certain that the refrigerant is R-410A. NOTICE 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%).
Installation Select The Best Location Indoor unit 6. Use a stud finder to locate studs to prevent unnecessary damage to the wall. 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. More than 30cm(11.8in) More than 12cm(4.7in) 4. Do not install near a doorway. More than 30cm(11.8in) 5.
Installation Piping Length And Elevation 9k(C/O) 3/8" 1/4" Standard Length m(ft) 7.5(25) 9k(H/P), 12k 1/2" 1/4" 7.5(25) 7.5(25) 15(49) 20(0.22) 18k(C/O) 1/2" 1/4" 7.5(25) 15(49) 30(98) 20(0.22) 18k(H/P), 24k 5/8" 1/4" 7.5(25) 15(49) 30(98) 30(0.32) Capacity (Btu/h) Pipe Size Suction Evap Max. Elevation B m(ft) 7.5(25) Max. length A m(ft) 15(49) Additional Refrigerant g/m(oz/ft) 20(0.
Installation How To Mount Installation Plate The wall you select should be strong and solid enough to prevent vibration Installation Plate 1. Mount the installation plate on the wall with type "A" screws. If mounting the unit on a concrete wall, use anchor bolts. • Mount the installation plate horizontally by aligning the centerline using a level. Chassis Hook Type “A” 2. Measure the wall and mark the centerline.
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(59.1in) longer than the pipe length. Copper pipe Slanted Uneven Rough 90° Burrs removal Pipe 1.
Installation Connecting The Piping Indoor 1. Prepare the indoor unit's piping and drain hose for installation through the wall. 2. Remove the plastic tubing retainer(see the illustration 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. For left rear piping Route the indoor tubing and the drain hose in the direction of rear left.
Installation Connecting the pipings to the indoor unit and drain hose to drain pipe. • 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. Indoor unit tubing Flare nut Wrap the insulation material around the connecting portion. • Overlap the connection pipe insulation material and the indoor unit pipe insulation material.
Installation Insert the connecting cable into the indoor unit. Spanner (fixed) • Don't connect the cable to the indoor unit. Flare nut • Make a small loop with the cable for easy connection later. Connection pipe Torque wrench Indoor unit tubing Tape the drain hose and the connecting cable. Outside diameter • Connecting cable Ø6.35 Ø9.52 Ø12.7 Ø15.88 Tape Connecting pipe Torque 1/4 3/8 1/2 5/8 1.8 4.2 5.5 6.6 • Mount the clamp on the boss with a type "B" screw.
Installation • Wrap the area which accommodates the rear piping housing section with vinyl tape. Indoor unit piping Connection pipe Vinyl tape (wide) Reroute the pipings and the drain hose across the back of the chassis. Wrap with vinyl tape Piping for passage through piping hole Pipe Vinyl tape(narrow) Connecting cable Reroute the pipings and the drain hose across the back of the chassis.
Installation Installation Information. For left piping. Follow the instruction below. Correct case • Press on the upper side of clamp and unfold the tubing to downward slowly. Incorrect case • Following bending type from right to left may cause damage to the tubing. Copyright ©2007 LG Electronics. Inc. All right reserved.
Installation Connection Of The Drain Hose • The drain hose can be connected at two different positions. Use the most convenient position and, if necessary, exchange the position of the drain pan, rubber cap and the drain hose. ➊ Drain pan ➋ Rubber cap ➌ Drain hose ➍ Exchange if necessary • Remove the drain hose. • Securely insert both the rubber plug and drain hose into the drain outlets. Be sure the rubber the cap is securely fastened so that there is no leakage.
Installation Connection Of The Cable 1. Remove the cover control from the unit by loosening the 3 screws. Wiring Diagram 2. Dismount caps on the conduit panel. Indoor Unit Terminal (4P) 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. Connecting cable(Low voltage) b 1 Outdoor Unit Terminal (6P) 1 2 2 3 3 Power supply a 4 4 L1* 5 L2 6 To branch circuit G 5.
Installation 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.
Installation Checking The Drainage • Pour a glass of water on the drain pan. • Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit. Connecting area drain hose Leakage checking Drain pan Drain hose Leakage checking Drain piping • The drain hose should point downward for easy drain flow. Downward slope • Avoid these situations. Accumulated drain water Air Do not raise Water leakage Water leakage Waving Copyright ©2007 LG Electronics.
Installation Forming The Piping Form the piping by wrapping the connecting portion of the indoor unit with insulation material 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. 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.
Installation Air Purging 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 refrigeration system.
Installation Soap water method (1) Remove the caps from the gas side and liquid side valves. (2) Remove the service-port cap from the gas side valve. (3) To open the gas side valve turn the valve stem counterclockwise approximately 90°, wait for about 2~3 seconds, 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.
Installation Charging ■ 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 30g(0.32oz) of R-410A per meter(foot). Capacity (Btu/h) Max.
Test Running Test Running 1. Check that all tubing and wiring have been properly connected. 2. Measure the temperature of the intake and discharge of air. 2. Check that the gas and liquid side service valves are fully open. 3. Ensure the difference between the intake temperature and the discharge is more than 46.4°F(8°C) (Cooling) or (Heating). Prepare remote control Intake temperature 1. Remove the battery cover by pulling it according to the arrow direction. Discharge air 2.
Operation Operation Function of Controls • DISPLAY 1) C/O Model Operation Indicator • ON while in appliance operation, OFF while in appliance pause. • Flashing while in disconnection or short in Thermistor. (3 sec off / 0.5 sec on) Timer Indicator • ON while in timer mode (on/off), OFF when timer mode is completed or canceled. Comp. Running Incidator • While in appliance operation, ON while in outdoor unit compressor running, OFF while in compressor off.
Operation • 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.
Operation ■ Airflow Speed Selection • The airflow speed of the indoor fan is set to high, medium, low, or chaos (auto) by the input of the airflow speed selection key on the remote control. ■ Sleep Timer Operation • When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote control while in appliance operation, the operation of the appliance stops. • While the appliance is on pause, the sleep timer mode cannot be input.
Operation ■ 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. Heat pump Model Cooling Model Room Temp. ≥ 24°C(75.2°F) 21°C(69.8°F) ≤ Room Temp. < 24°C(75.2°F) Room Temp. < 21°C(69.8°F) Operating mode Cooling Cooling Healthy Dehumidification Heating Indoor FAN Speed High High High High Setting Temperature 22°C(71.6°F) 22°C(71.6°F) 23°C(73.
Operation Display Function 1. Heating Model 2. Cooling Model Operation Indicator Operation Indicator • Cooling, Soft Dry, Fan, Heating • Cooling, Soft Dry, Fan Compressor on Indicator Deicer Indicator • Hot-start, Deice Self-diagnosis Function Error Code 1 Error Display LED (Indoor body operation LED) (once) 3sec 3sec 3sec Copyright ©2007 LG Electronics. Inc. All right reserved.
Operation Remote Control Operations The controls will look like the following. Signal transmitter 5 1 6 3 4 2 7 11 8 13 10 CANCEL ON OFF 9 12 SET AUTO CLEAN 17 18 14 16 15 Flip-up door (opened) Operation Mode Cooling Operation Auto Operation or Auto Changeover Healthy Dehumidification Operation Heating Operation • Cooling Model( ), Heat Pump Model( Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes ) 1.
Disassembly Disassembly Indoor Unit 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. • Set the up-and-down air discharge louver to open position (horizontally) by finger pressure. • Remove the securing screws. • To remove the Grille, pull the lower left and right side of the grille toward you (slightly tilted) and lift it straight upward. 1.
Disassembly 2. To remove the Control Box. • Remove securing screws. • Pull the control box out from the chassis carefully. Screw 3. To remove the Discharge Grille. • Unhook the discharge grille and pull the discharge grille out from the chassis carefully. 4. To remove the Evaporator. • Remove 3 screws securing the evaporator(at the left 2EA in the Eva Holder, at the right 1EA). • When repair, do not damage the Caution label. Copyright ©2007 LG Electronics. Inc. All right reserved.
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. Motor cover 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.
Troubleshooting Guide Troubleshooting Guide Refrigeration Cycle Diagram (1) Cooling Only Models INDOOR UNIT OUTDOOR UNIT LIQUID SIDE CAPILLARY TUBE HEAT EXCHANGE (CONDENSER) HEAT EXCHANGE (EVAPORATOR) GAS SIDE COMPRESSOR (2) Cooling & Heating Models INDOOR UNIT OUTDOOR UNIT LIQUID SIDE CHECK VALVE (Heating Model only) 3-WAY VALVE CAPILLARY TUBE HEAT EXCHANGE (EVAPORATOR) HEAT EXCHANGE (CONDENSER) GAS SIDE 3-WAY VALVE REVERSING VALVE (Heating Model Only) ACCUMU LATOR COMPRESSOR Copyright ©200
Troubleshooting Guide 2-way, 3-way Valve 2-way Valve (Liquid Side) Hexagonal wrench (4mm) Flare nut 3-way Valve (Gas Side) Valve cap Open position Flare nut Closed position Open position Closed position To piping connection To piping connection To outdoor unit Works Shipping 1.
Troubleshooting Guide Pumping Down Liquid side Indoor unit 2-Way valve Open Outdoor unit Gas side Closed 3-Way valve Lo CLOSE CLOSE Purge the air • 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.
Troubleshooting Guide Balance Refrigerant of the 3-way Valve (Gas leakage) Liquid side Indoor unit Outdoor unit 3-Way valve Open Gas side 3-Way valve Open Lo OPEN CLOSE • Procedure (3) Open the valve (Lo side) on the charge set and discharge the refrigerant until the gauge indicates 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 refrigerant until the gauge indicates 0.5 to 1 kg/cm2G.
Troubleshooting Guide Evacuation (All amount of refrigerant leaked) Liquid side Indoor unit Outdoor unit 3-Way valve Open Gas side 3-Way valve Open Vacuum pump Lo OPEN CLOSE • Procedure (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). (1) Connect the vacuum pump to the center hose of charge set center hose (2) Evacuation for approximately one hour.
Troubleshooting Guide Gas Charging (After Evacuation) Liquid side Indoor unit 3-Way valve Open Outdoor unit Gas side Open 3-Way valve Check valve Charging cylinder Lo (1) OPEN CLOSE • Procedure \ (1) Connect the charge hose to the charging cylinder. – Connect the charge hose which you disconnected 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 system can be charged with liquid.
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 valve service port after operating the unit for 10 minutes. The method of using graph - Find outdoor temperature.
Troubleshooting Guide Cycle Parts Trouble analysis 1. Check temperature difference between intake and discharge air and operating current. Temp. Difference Operating Current Temp. difference : approx. °F(0°C) Current : less than 80% of rated current • All amount of refrigerant leaked out. Check refrigeration cycle. Temp. difference : approx. 14°F(8°C) Current : less than 80% of rated current • Refrigerant leakege Clog of refrigeration cycle Defective compressor Temp.
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 (After 20 seconds) Turn on Main Power Does "beeping" sound is made from the Indoor Unit? YES NO Primarily, the operating condition of Micom is OK.
Troubleshooting Guide Electronic Parts (18k model) Product does not operate at all. (* Refer to Electronic Control Device drawing and Schematic diagram.) Turn off Main Power (After 20 seconds) Turn on Main Power Does "beeping" sound is made from the Indoor Unit? YES NO Primarily, the operating condition of Micom is OK.
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. 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.
Troubleshooting Guide Compressor/Outdoor Fan are unable to drive.(9k Model) 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 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 effected by the temperature of Heat Exchanger(EVA).
Troubleshooting Guide Compressor/Outdoor Fan are unable to drive.(18k Model) 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 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 effected by the temperature of Heat Exchanger(EVA).
Troubleshooting Guide When indoor Fan does not operate. Does the voltage of each terminals of CN-MOTOR CONNECTOR in Indoor unit corresponds to values in the Table of page 56 Does the voltage of terminal of CN-DC/DC CONNECTOR in Indoor unit corresponds to the values in the table of page 56 Do the voltage of terminal of CN-DC/DC CONNECTOR in Outdoor unit corresponds to the values in the table of page 56 NO Check the patterns and the conditions of outdoor unit PWB Assy's.
Troubleshooting 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 Normal • Check the connecting condition of CN-UP/DOWN Connector • Check the soldering condition(on PWB) of CN-UP/DOWN Connector Check the operating circuit of the Vertical Louver • Confirm that there is DC +12V between pin (RED) of CN-UP/DOWN and GND.
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. Check the connecting wires between Indoor and Outdoor unit for the connecting error and the contacting condition. Check the installation condition of outdoor unit. Check for the communication error and the operating condition of product after also operating with the remote controller, then taking above 2 minutes.
Troubleshooting Guide The phenomena in case of connecting error INDOOR UNIT Connector Type CN-DC/DC Phenomena Condition Open and connecting error • The same as the phenomenon of Outdoor Unit. Blue Black Brown Red CN-MOTOR Open • The indoor fan does not operate. • The operation indicator of Indoor unit blinks 8 times. Open • The up/down vane does not operate. CN-UP/DOWN Short between terminals CN-DISP Open • The up/down vane does not smoothly operate.
Troubleshooting Guide OUTDOOR UNIT Connector Type Phenomena Condition OPEN CN-POWER Connecting reversely • All functions stop. • The operation with the remote controller, forced and test one do not operate. • PWB pattern is damaged when applying the power. OPEN • All functions stop or the compressor does not operate. • The operation with the remote controller, forced and test one do not operate. Connecting reversely • All functions stop.
Schematic Diagram Schematic Diagram Electric Control Device ■ Indoor Copyright ©2007 LG Electronics. Inc. All right reserved.
Schematic Diagram ■ Outdoor (9k, 12k) Copyright ©2007 LG Electronics. Inc. All right reserved.
Schematic Diagram ■ Outdoor (18k, 24k) Copyright ©2007 LG Electronics. Inc. All right reserved.
Schematic Diagram Wiring Diagram ■ Indoor Unit Models: 9k, 12k, 18k, 24k Copyright ©2007 LG Electronics. Inc. All right reserved.
Schematic Diagram ■ Outdoor Unit Models: 9k(C/O) Models: 12k(H/P), 12k(C/O, H/P) Copyright ©2007 LG Electronics. Inc. All right reserved.
Schematic Diagram Models: 18k(C/O) Models: 18k(H/P), 24k(C/O, H/P) Copyright ©2007 LG Electronics. Inc. All right reserved.
Schematic Diagram Components Location ■ Indoor MAIN P.W.B ASSEMBLY • TOP VIEW • BOTTOM VIEW Copyright ©2007 LG Electronics. Inc. All right reserved.
Schematic Diagram ■ Outdoor(9k, 12k) • TOP VIEW • BOTTOM VIEW Copyright ©2007 LG Electronics. Inc. All right reserved.
Schematic Diagram ■ Outdoor(18k, 24k) • TOP VIEW • BOTTOM VIEW Copyright ©2007 LG Electronics. Inc. All right reserved.
Schematic Diagram DISPLAY ASSEMBLY – 6871A20681 CN-DISP1 PCB P/No : 6870A90240F PLASMA 88 LED_M RECEIVER SW_TACT C01A PCB ASSEMBLY P/No : 6871A20681 – 6871A20680 Copyright ©2007 LG Electronics. Inc. All right reserved.
Product Specifications Product Specifications Cooling Only Model Name Item Unit LS090CP LS120CP LS180CP LS240CP (AS-C0914DH0) (AS-C121E1H0) (AS-C1835DM0) (AS-C2435DM0) 1, 115V, 60 Power Supply Ø, V, Hz 9,000 Cooling Capacity BTU/h 780 Input W 7 Running Current A 50 COMP. Locked Rotor AMP. A 13 S.E.E.R 7.1(250) Air Circulation m3G/min(cfm) 1.2(2.
Product Specifications Cooling & Heating Items Unit LS090HP LS120HP LS180HP LS240HP (AS-H091E1H0) (AS-H121E1H0) (AS-H1835DM0) (AS-H2435DM0) Power Supply ø, V, Hz 1, 115V, 60 1, 115V, 60 1, 230/208 , 60 1, 230/208 , 60 Cooling Capacity BTU/h 9,800 11,500 19,000/19,500 22,100/22,500 Heating Capacity BTU/h 9,800 11,500 19,000/19,500 22,100/22,500 Input Cooling W 980 1,150 2,250 2,250 Heating W 980 1,150 2,700 2,700 Running Current Cooling A 9.5 10.5 12.5/11.5 12.5/11.5 Heating A 9.5 10.5 12.5/11.5 12.5/11.
Exploded View Exploded View Indoor Unit 135316 Option Parts 152313 152302 135313 131410 733010 Part for Plasma Models 342800 159830 359011 135311 354210 147581 352115 346810 35211B 268711A 135516 352116 352150 266090 Part for Plasma Models 263230A 146811 268711B 267110 249951 Copyright ©2007 LG Electronics. Inc. All right reserved.
Exploded View 552203A 552203B 550140 554160 Part for External Models 268711D 263230C 430410 W0CZZ 435301 437210 559010 447910 546810 349600 263230B 554031 649950 567502 437212 552113 435511 Outdoor Unit: 9k, 12k (C/O) Seriess Copyright ©2007 LG Electronics. Inc. All right reserved.
435301 437210 559010 447910 546810 349600 Copyright ©2007 LG Electronics. Inc. All right reserved.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Exploded View Outdoor Unit: 24k(C/O) Seriess 435512 263230B 137213A 435300 137213B 437210 349480 554031 552112 552113 349600 435301 435511 W0CZZA W0CZZB 546810 268711D 263230C 559010 649950 447910 567502A 552203A 554160A Part for External Models 552203B 554160B 567502B Part for External Models 430410 Copyright ©2007 LG Electronics. Inc. All right reserved.
Exploded View Outdoor Unit: 18k, 24k (H/P) Seriess 435512 263230B 137213A 435300 137213B 437210 349480 554031 552112 552113 349600 435301 435511 W0CZZA W0CZZB 546810 268711D 263230C 559010 649950 552116 552202 447910 567502A 552203A 554160A 561410 Part for External Models 566000 552203B 554160B 567502B Part for External Models 430410 Copyright ©2007 LG Electronics. Inc. All right reserved.
P/NO : MFL32351801 December, 2007
