website http://www.lgservice.com LG LG Multi Type Air Conditioner SERVICE MANUAL MODEL • Indoor Unit: Room Type Art Cool Type AMNH093D4A0(LMN090HE) AMNC093D4A0(LMN090CE) AMNH123DEA0(LMN120HE) AMNC123DEA0(LMN120CE) AMNH093APM0(LMAN090HNS) AMNC093APM0(LMAN090CNS) AMNH123APM0(LMAN120HNS) AMNC123APM0(LMAN120CNS) • Outdoor Unit: A3UH363FA0(LMU360HE) A3UC363FA0(LMU360CE) CAUTION • BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. • ONLY FOR AUTHORIZED SERVICE PERSONNEL.
Multi type Air Conditioner Service Manual TABLE OF CONTENTS Model Number Nomenclature ....................................................................................................................3 Symbols Used in this Manual ...................................................................................................................4 Safety Precautions......................................................................................................................................
Model Number Nomenclature Model Number Nomenclature Indoor Unit AMN H 09 3 D 4 A 0 Serial Number Function A : Basic, L : Nano Plasma + Auto Clean(Wall Mounted) C: Plasma(Ceiling Cassette), G: Low Static Motor ART COOL(DELUXE) Type Front Panel Color B : Blue, D : Wood, M : Metal, R : Mirror, W : White Chassis Name Indoor Unit Type Wall mounted split D : D- look type M : M- look type L : L- look type G : G- look type N : N- look type Artcool type A : standard/wide type D : Deluxe type B : Ceiling
Model Number Nomenclature Combination table Cooling Capacity (Btu/h) A 1 UNIT 2 UNIT 3 UNIT Heating Combination(k Btu) Operation B C Capacity (Btu/h) Input Current EER (W) (A) (Btu/h.w) Unit-A Unit-B Unit-C Total COP Input Current (W) (A) (Btu/h.w) (w/w) 1320 5.9 6.8 9000 9000 1550 7.0 5.8 1.7 12000 1320 5.9 9.1 12000 12000 1410 6.3 8.5 2.5 Total Unit-A Unit-B Unit-C Total 9 9 9000 12 12 12000 9000 9 9 18 9000 9000 18000 2180 9.8 8.3 9000 9000 18000 2160 9.
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. WARNING This symbol indicates the possibility of death or serious injury. CAUTION This symbol indicates the possibility of injury or damage to properties only.
Safety Precautions Do not modify or extend the power cable. • There is risk of fire or electric shock. For installation, always contact the dealer or an Authorized Service Center. • There is risk of fire, electric shock, explosion, or injury. 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. Do not install, remove, or reinstall the unit by yourself (customer). • There is risk of fire, electric shock, explosion, or injury.
Safety Precautions Do not plug or unplug the power supply plug during operation. • There is risk of fire or electric shock. Do not allow water to run into electric parts. • It may cause There is risk of fire, failure of the product, or electric shock. Do not touch(operate) the product with wet hands. • There is risk of fire or electrical shock. Do not store or use flammable gas or combustibles near the product. • There is risk of fire or failure of product.
Safety Precautions Do not open the inlet grill of the product during operation. (Do not touch the electrostatic filter, if the unit is so equipped.) • There is risk of physical injury, electric shock, or product failure. When the product is soaked (flooded or submerged), contact an Authorized Service Center. • There is risk of fire or electric shock. Ventilate the product from time to time when operating it together with a stove, etc. • There is risk of fire or electric shock.
Safety Precautions Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods. • It may cause a problem for your neighbors. Use two or more people to lift and transport the product. • Avoid personal injury. Do not install the product where it will be exposed to sea wind (salt spray) directly. • It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation.
Safety Precautions Do not step on or put anyting on the product. (outdoor units) Always insert the filter securely. Clean the filter every two weeks or more often if necessary. Do not insert hands or other objects through the air inlet or outlet while the product is operated. • There is risk of personal injury and failure of product. • A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage.
Dimensions Dimensions Indoor Unit 1. Split Type Indoor 2.
Dimensions Outdoor Unit L5 L1 L10 L11 L11 L11 L11 L11 L4 H L3 D L2 W Gas side 3-way valve Liquid side 2-way valve L9 L7 L6 MODEL DIM L8 UE2 36k W mm 870 H mm 1038 D mm 320 L1 mm 360 L2 mm 340 L3 mm 25 L4 mm 1035 L5 mm 25 L6 mm 546 L7 mm 160 L8 mm 160 L9 mm 44 L10 mm 64.
Product Specifications Product Specifications Indoor Unit Indoor Unit Type Wall Mounted Model Nominal Cooling Capacity ★ Nominal Heating Capacity ★ Air Circulation H/M/L Setting temperature range(cool/heat) Fan motor Output Model Input Running Current Fan Type No. Used / Diameter Noise Level (Sound Press,1m) H/M/L Temperature controller Coil Tube Size (OD) Fins per inch No.
Product Specifications Outdoor Unit - Multiple piping models Model Cooling Capacity★ Heating Capacity★ Input★ Running Current★(208/230V) Cooling Heating Cooling Heating Btu/hr W kcal/hr Btu/hr W kcal/hr W W A A Ø,V,Hz Power Supply Max. Number of Connectable Indoor Units Compressor Type (Constant) Model Motor Type Quantity Ea Motor Input W Oil Charge cc Oil Type Capacitor µF/Vac O.L.
Installation Installation Read carefully, and then follow step by step.
Installation Select the best location 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. More than 5cm (2.0 inch) More than 5cm (2.0 inch) 3. Make sure that condensation drainage can be conveniently routed away. 4. Do not install near a doorway. More than 2.3m (90.6 inch) 5. Ensure the spaces indicated by arrows from the wall, ceiling, fence or other obstacles. More than 5cm (2.0 inch) 6.
Installation Piping length and elevation Multi Piping Type Capacity(Btu/h) 36k Max Elevation Max total length of Max length of each Min length of each between each all pipes pipe (A/B/C) pipe (A/B/C) indoor unit and out(A+B/A+B+C) door unit (h1) 45m(150ft) 15m(50ft) 3m(10ft) 7.5m(25ft) Max elevation between indoor units (h2) 7.5m(25ft) Pipe Size Indoor Capacity (Btu/h) Gas Liquid Standard Length Additional Refrigerant 9K 3/8" 1/4" 7.5m(25ft) 20g/m(0.32oz/ft) 12K 3/8" 1/4" 7.
Installation Fixing Installation Plate(Standard Type) 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 concrete wall, use anchor bolts. • Mount the installation plate horizontally by aligning the centerline using a level. Installation Plate Chassis Hook Type "A" screw 2. Measure the wall and mark the centerline.
Installation Preparing work for Installation (Artcool Type Only) Open panel front 1. First, push the front panel backward and lift it up to remove the two screws. 2. The moment of lifting the both lower parts of panel front, you can hear sound this panel came out, In this time panel front is separated 3. After pull down this panel a bit, and separate connecting wire with product. Panel Front Connector Remove cover pipe and cover side 1. Remove two screws(for fixing cover pipe) 2.
Installation ■ Sticking the installation guide map and fixing Indoor unit 1. Put an Installation Guide Map on the desired surface. 7. Drill the piercing part for connecting pipe as diameter 50mm. (In case of piercing rear surface) INSTALLATION GUIDE MAP Refer to No. 5 on this page when making a hole in the wall. 2. Make a hole with diameter of 6mm and depth of 30-35mm when piercing a screw point. IN ST AII AT IO N 8. First, Drive the two points of the upper parts by screws.
Flaring Work and Connection of Piping Flaring Work and Connection of Piping 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. Copper pipe 3. Cut the pipes a little longer than measured distance. Slanted Uneven Rough 90° 4. Cut the cable 1.5m (5.
Flaring Work and Connection of Piping Check 1. Compare the flared work with the figure by. Smooth all round Inside is shiny without scratches 2. If a flared section is defective, cut it off and do flaring work again. = Improper flaring = Even length all round Inclined Surface Cracked Uneven damaged thickness Connecting the Piping Indoor 1. Prepare the indoor unit's piping and drain hose for installation through the wall. 2.
Flaring Work and Connection of Piping 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 properly seated on the installation plate by moving it left and right. Connecting cable Drain hose Press the lower left and right sides of the unit against the installation plate until the hooks engage into their slots(clicking sound).
Flaring Work and Connection of Piping For left rear piping 1. Route the indoor tubing and the drain hose to the required piping hole position. 1 2 2. Insert the piping, drain hose, and the connecting cable into the piping hole. Connecting cable 3. Insert the connecting cable into the indoor unit. • Don't connect the cable to the indoor unit. • Make a small loop with the cable for easy connection later. Drain pipe 4. Tape the drain hose and the connecting cables. 5.
Flaring Work and Connection of Piping Wrap the insulation material around the connecting 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. Plastic bands Insulation material 2. Wrap the area which accommodates the rear piping housing section with vinyl tape. Indoor unit piping Connection pipe Vinyl tape (wide) Wrap with vinyl tape Pipe Vinyl tape(narrow) Connecting cable 3.
Flaring Work and Connection of Piping ■ Panel Assembly(Art Cool Type only) 1. First, Check the side cover assembly exactly, Fix power cord in the bottom groove of cover side left. 2. Assemble connecting lead wire with controller and first fix the upper part of panel front, then match the lower part of panel front Panel Front Connector 3. Drive two screws.
Flaring Work and Connection of Piping 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.
Flaring Work and Connection of Piping REMOTE CONTROL PREPARATION(OPTIONAL) HOW TO MOUNT ONTO A WALL HOW TO INSERT BATTERIES Remove the battery cover from the remote controller. • Slide the cover according to the arrow direction. Insert the two batteries. • Be sure that the (+) and (-) directions are correct. • Be sure that both batteries are new. Re-attach the cover. • Slide it back into position.
Flaring Work and Connection of Piping 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. Outdoor unit • When tightening the flare nut with torque wrench, ensure the direction for tightening follows the arrow on the wrench. Outside diameter mm inch Ø6.35 1/4 Ø9.52 3/8 Torque kg.m 1.8 4.
Connecting the Cable between Indoor Unit and Outdoor Unit Connecting the Cable between Indoor Unit and Outdoor Unit Connect the cable to the Indoor unit. Connect the cable to the indoor unit by connecting the wires to the terminals on the control board individually 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.) The earth wire should be longer than the common wires.
Connecting the Cable between Indoor Unit and Outdoor Unit Connect the cable to the Outdoor unit. 1. Remove the cover control from the unit by loosening the Connecting cable(Low voltage) screw. Connect the wires to the terminals on the control board individually as the following. Outdoor unit Terminal block Over 5mm 2. Secure the cable onto the control board with the holder (clamper). Holder for power supply cord 3. Refix the cover control to the original position with the screw.
Connecting the Cable between Indoor Unit and Outdoor Unit Connection method of the connecting cable(Example) (1) Remove two-caps on the conduit panel. (2) Make a hole appropriate for the passage of connection cable through on cap by tool. (for low voltage line) (3) Pass the connecting cable through the hole. (4) Properly connect the cable on the terminal block.
Connecting the Cable between Indoor Unit and Outdoor Unit CAUTION: Provide a circuit breaker between power source and the unit as shown below. Main power source Air Conditioner Circuit Breaker Use a circuit breaker or time delay fuse. Model 36k Power source Fuse or breaker Capacity 1Ø, 230/208V 40A Connect the cable to the indoor unit 1. Connect the wires to the terminals on the control board individually according to the outdoor unit connection.
Checking the Drainage, Forming the Pipings and Long Pipe Setting Checking the Drainage, Forming the Pipings and Long Pipe Setting Checking the drainage To check the drainage. 1. Pour a glass of water on the evaporator. 2. Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit. Drain piping 1. The drain hose should point downward for easy drain flow. Downward slope 2. Do not make drain piping.
Checking the Drainage, Forming the Pipings and Long Pipe Setting 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 tape. • 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. Seal a small opening around the pipings with gum type sealer.
Air Purging and Evacuation Air Purging and Evacuation Air and moisture remaining in the refrigerant system have undesirable effects as indicated below. 1. Pressure in the system rises. 2. Operating current rises. 3. Cooling(or heating) efficiency drops. 4. Moisture in the refrigerant circuit may freeze and block capillary tubing. 5. Water may lead to corrosion of parts in the refrigeration system.
Checking the Drainage, Forming the Pipings and Long Pipe Setting Evacuation 1. Connect the charge hose end described in the preceding steps to the vacuum pump to evacuate the tubing and indoor unit. Confirm the "Lo" knob of the manifold valve is open. Then, run the vacuum pump. The operation time for evacuation varies with tubing length and capacity of the pump. The following table shows the time required for evacuation.
Charging Charging ■ Each outdoor unit is factory charged (nameplate charge) for the evaporator as well as a 7.5m(25ft) line set for each indoor line. Any time total line set is used either shorter or longer then the nominal 22.5m(75ft: for tri-zone) line set length the refrigerant charge has to be adjusted. ■ Whether the line set is made shorter or longer you must adjust the charge based on how many ft of tubing are either added or removed based on 20g(0.22oz) of R-410A per meter(foot).
Test Running Test Running Split, Art Cool Type 1. Check that all tubing and wiring have been properly connected. 2. Check that the gas and liquid side service valves are fully open. 1) Prepare remote controller Remove the battery cover by pulling it according to the arrow direction. Insert new batteries making sure that the (+) and (–) of battery are installed correctly. Reattach the cover by pushing it back into position.
Operation Operation Function of control 1. MAIN UNIT FUNCTION • DISPLAY Operation Indicator • On while in appliance operation, off while in appliance pause • Flashing while in disconnection or short in Thermistor (3 sec off / 0.
Operation 27°C(80.6°F), it operates with Super-Low(while in sleep mode, with the medium airflow speed). • While compressor off, the indoor fan is off when the indoor pipe temp is below 33°C(91.4°F), when above 35°C(95°F) , it operates with the low airflow speed. • While in defrost control, the indoor is outdoor fans are turned off. ■ Defrost Control(Heating) • Defrost operation is controlled by timer and sensing temperature of outdoor pipe.
Operation 2) Fuzzy Operation for Dehumidification • According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C(32.9°F) or more below the setting temp, the compressor is turned off. When 0.5°C(32.9°F) or more above the setting temp, the compressor is turned on. Compressor ON Temp ➲ Setting Temp + 0.5°C(32.9°F) Compressor OFF Temp ➲ Setting Temp+0.5°C(32.
Operation • If the appliance is on pause at the time set by the timer, the pause continues. ■ Off-Timer <=> On-Timer Operation • When the set time is reached after the on/off time is input by the remote control, the on/off-timer operation is carried out according to the set time. ■ 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.
Operation ■ Forced Operation • To operate the appliance by force in case that the remote control is lost, the forced operation selection switch is on the main unit of the appliance to operate the appliance in the standard conditions.
Operation Function of Indoor Unit Split Type Indoor Unit Operation ON/OFF by Remote controlle r Sensing the Room Temperature • Room temperature sensor. (THERMISTOR) Room temperature control • Maintains the room temperature in accordance with the Setting Temp. Starting Current Control • Indoor fan is delayed for 5 seconds at the starting. Time Delay Safety Control • Restarting is delayed for approx. 3 minutes.
Operation Art Cool Type Indoor Unit Operation ON/OFF by Remote controller Sensing the Room Temperature • Room temperature sensor. (THERMISTOR) Room temperature control • Maintains the room temperature in accordance with the Setting Temp. Starting Current Control • Indoor fan is delayed for 5 sec at the starting. Time Delay Safety Control • Restarting is inhibited for approx. 3 minutes.
Operation Function of Outdoor Unit Outdoor Unit Two Comp algorithm • Inverter Comp is first priority and then Constant Comp is turning on responding to load condtion. Operating Step • Compressor step varies considering condition such as room temp,outdoor temp, operating room number,Temp gap between room temp and set temp and so on. LEV Control • LEV pulse is modulated to keep constant superheat or subcooling. Out door Fan Control • Outdoor fan operates at High or Off to respond to the load condition.
Operation Remote Control Operation The Remote Controller transmits the signals to the system. Signal transmitter 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 5 6 4 2 7 11 8 13 INDOOR FAN SPEED SELECTOR Used to select fan speed in four steps low, medium, high and CHAOS. 5 JET COOL Used to start or stop the speed cooling/heating.
Disassembly Disassembly Indoor Unit Split Type 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.
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.
Disassembly Art Cool Type Indoor Unit CAUTION: Disconnect the unit from power supply before making any checks. Be sure the power switch is set to “OFF”. 1. To remove the Grille from the Chassis. - Pull the grille bottom, the remove 2 securing screws. - Lift the both lower parts of panel front. - After pull down this panel a bit, separate connecting wire with product. 2. To remove the Control Box. - Before removing the control box, be sure to disconnect the wires from PWB.
Disassembly 3) To remove the Evaporator. - Remove 4 screws securing the evaporator. - Pull the evaporator out from the chassis carefully. 4) Before removing the Turbo Fan. - Remove the securing screws from the chassis. - Pull the pipe cover, top cover and the air guide. Air Guide Top Cover Pipe Cover 5) To remove the Motor. - Remove the securing bolt from the motor shaft. - Pull the fan out from the motor shaft.
Schematic Diagram Schematic Diagram Electronic Control Device 1.
Schematic Diagram 2) Art Cool Type a f 4(f) 3(a) 1(g) 6(d) 9(b) 7(e) 8(c) CN-D5 SUB PCB ASM 1 2 3 4 1 CN-D1(WH) 1 2 3 4 5 6 1 2 3 4 5 6 7 8 5 5 6 7 8 5 5 6 7 8 4 3 7 8 4 3 RD OR YL PK BL 1 9 2 3 4 2 1 1 1 1 CN-D2(WH) 9 5 1 3 9 2 1 2 4 9 5 1 3 3 2 6 5 9 8 7 6 5 9 8 7 6 5 9 8 7 6 5 4 3 2 7 10 4 3 2 8 10 4 3 9 10 CN-D1(WH) 12V 10 12 11 10 12 11 10 HVB PIN2 HVB HVB PIN1 receiver 10 12 11 5V C02L 220 10V 5V Q02C Q03C 5V D
Schematic Diagram 2.
Schematic Diagram Service Manual 57
Schematic Diagram Wiring Diagram 1. Room Type Indoor Unit -S4/SE chassis 2. Art Cool Type Indoor Unit 3. Outdoor Unit 1. A3UH363FA0(LMU360HE) 2.
Schematic Diagram Components Locations 1. Indoor Unit MAIN P.C.
Schematic Diagram 2) Art Cool Type • TOP VIEW • BOTTOM VIEW 60 Multi type Air Conditioner
Schematic Diagram 2.
Schematic Diagram 3.
Schematic Diagram 2) Solder side Service Manual 63
Troubleshooting Guide Troubleshooting Guide Refrigeration Cycle Diagram 1. A3UH363FA0(LMU360HE) OUTDOOR UNIT Ø9.52 Room C Field Piping Gas High pressure S/W Ø9.52 Room B Ø9.52 Room A Header Th3 Th2 Constant Compressor Constant Compressor Accumulator Th1 Heat Exchanger Field Piping Liquid Ø6.35 Room C LEV-C Ø6.35 Room B LEV-B Ø6.35 Room A LEV-A Refrigerant Flow Cooling Th1: Discharge thermistor Th2: Discharge thermistor Th3: Outdoor temperature thermistor 2.
Troubleshooting Guide Self-diagnosis Function ■ Error Indicator • The function is to self-diagnoisis airconditioner and express the troubles identifically if there is any trouble. • Error mark is ON/OFF for the operation LED of evaporator body in the same manner as the following table. • If more than two troubles occur simultaneously, primarily the highest trouble fo error code is expressed. • After error occurrence, if error is released, error LED is also released simultaneously.
Troubleshooting Guide Cycle Troubleshooting Guide Trouble analysis 1. Check temperature difference between intake and discharge air, and operating current. Temp. difference Current : approx. 0°C(32°F) : less than 80% of rated current All amount of refrigerant leaked out. Check refrigeration cycle. Temp. difference Current : approx. 8°C(46.4°F) : less than 80% of rated current Refrigerant leakage Clog of refrigeration cycle Defective compressor Temp. difference Current : less than 8°C(46.
Troubleshooting Guide Electronic Parts Troubleshooting Guide ❇ Refer to electronic contorol device drawing & schematic diagram. Trouble 1 The Product doesn’t operate at all. Turn off the main power and wait until LED on outdoor PCB is off. Turn on the main power again. Does "Beeping" sound is made from the indoor unit? NO YES Check the voltage of power(AC208V/AC230V, 60Hz). • The voltage of main power. • The voltage applied to the unit.
Troubleshooting Guide Trouble 2 Product doesn't 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 as force.) Caused by the remote controller.
Troubleshooting Guide Trouble 3 The Compressor/Outdoor Fan are don't operate Turn on the main power. Operate Cooling Mode by setting the disired temperature of the remote controller is less than one of the Indoor temperature by 1°C at least. When in air circulation mode, compressor/outdoor fan is stopped. Check the sensor for Indoor temperature is attatched as close as to be effected by the themperature of Heat Exchange (EVA.
Troubleshooting Guide Trouble 4 When indoor Fan does not operate. When indoor Fan does not operate.
Troubleshooting Guide Trouble 5 When the louver does not operate. When Vertical Louver does not operate. • Confirm that the Vertical Louver is normally geared with the shaft of Stepping Motor.
Troubleshooting Guide Error Code ■ Trouble Shooting Error code Title 01 Indoor air sensor 02 Indoor inlet pipe sensor 06 Indoor outlet pipe sensor Cause of error • Open / Short • Soldered poorly • Internal circuit error • Open / Short • Soldered poorly • Internal circuit error • Open / Short • Soldered poorly • Internal circuit error Check point & Normal condition Normal resistor : 10KΩ / at 25°C (Unplugged) Normal voltage : 2.
Troubleshooting Guide Error code 05 / 53 Title Communication (Indoor ➔ Outdoor) Cause of error Check point & Normal condition • Power input AC 230V.(Outdoor, Indoor) • The connector for transmission is disconnected. • The connecting wires are misconnected. • Communication poorly • The GND 1,2 is not connected at main GND. • The communication line is shorted at GND. • Transmission circuit of outdoor PCB is abnormal. • Transmission circuit of indoor PCB is abnormal. ❑ Check Point 1.
Troubleshooting Guide Error code 33 Title D-Pipe Temp. High Cause of error Check point & Normal condition • Discharge sensor temp. high • Check the discharge pipe sensor. • Check the install condition for over load. • Check the leakage of refrigerent. • Check the SVC V/V open. COMP OFF 115°C(239°F) LEV OPEN(16PULSE/MIN) 100°C(212°F) LEV OPEN(10PULSE/MIN) 95°C(203°F) NORMAL A3UH363FA0(LMU360HE)/A3UC363FA0(LMU360CE) ❑ Check Point 1. Check the install condition for over load. 2.
Troubleshooting Guide Error code Title 44 Outdoor air sensor 45 Condensor pipe sensor 47 D-Pipe sensor Cause of error • Open / Short • Soldered poorly • Internal circuit error • Open / Short • Soldered poorly • Internal circuit error • Open / Short • Soldered poorly • Internal circuit error Check point & Normal condition Normal resistor : 10KΩ / at 25°C(77°F) (Unplugged) Normal voltage : 2.5Vdc / at 25°C(77°F) (plugged) Normal resistor : 5KΩ/ at 25°C(77°F) (Unplugged) Normal voltage : 2.
2-way, 3-way Valve 2-way, 3-way Valve 2-way Valve (Liguid Side) 3-way Valve (Gas Side) Valve cap Flare nut Hexagonal wrench (4mm) Open position Closed position To piping connection Flare nut Open position Closed position Pin To piping connection To outdoor unit Service Service port cap port To outdoor unit Works Shaft position Shaft position Service port Shipping Closed (with valve cap) Closed (with valve cap) Closed (with cap) Air purging (Installation) Open (counter-clockwise) Closed
2-way, 3-way Valve (1) Pumping down Indoor unit Liquid side 2-Way valve Close Outdoor unit Gas side 3-Way valve Indoor unit Open Liquid side 2-Way valve Close Gas side 3-Way valve Open manifold gauge Lowhandle (CLOSE) Hi- handle (CLOSE) • Procedure 1. Confirm that both the gas side and liquid side valves are set to the open position. - Remove the valve stem caps and confirm that the valve stems are in the raised position. - Be sure to use a hexagonal wrench to operate the valve stems. 2.
2-way, 3-way Valve (2) Evacuation (All amount of refrigerant leaked) Indoor unit Liquid side 2-Way valve Open Outdoor unit Gas side 3-Way valve Indoor unit Open Liquid side 2-Way valve Open Gas side 3-Way valve Open manifold gauge Vacuum pump Lowhandle (OPEN) Hi- handle (OPEN) • Procedure 1. Confirm that both the liguid side valve and gas side valve are set to the opened position. 2. Connect the vaccum pump to the center hose of the manifold gauge. 3.
2-way, 3-way Valve (3) Gas Charging (After Evacuation) Indoor unit Liquid side 2-Way valve Open Outdoor unit Gas side 3-Way valve Indoor unit Open Liquid side 2-Way valve Open Gas side 3-Way valve Charging cylinder Open manifold gauge Low-handle Check valve (OPEN) Hi- handle (OPEN) • Procedure 1. Connect the gauge to the charging cylinder. - Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder.
Exploded View & Replacement Parts List Exploded View & Replacement Parts List Indoor Unit S4, SE chassis 135311 152302-1 152302-2 135301 131410 152313 733010 342800 354210 359011 135312 135500 159901 346810 35211B 268712 135516 352150 147582 146811 263230-2 267110 249951 268714 668713 80 Multi type Air Conditioner 263230-1
Exploded View & Replacement Parts List Parts List (S4, SE chassis) PART No. S4 chassis LOCATION No.
Multi type Air Conditioner 135314 135312 267110 268712 159830 268717-1 146811 268717-2 249951 330870 268714 359012 135500-3 349600 135500-2 346810 352380 147581 146811 354210 35211B 263230-2 147581 146811 352150 135515 135500-1 131410 263230-1 146811 147581 Exploded View & Replacement Parts List SP3 Chassis Art Cool Type
Exploded View & Replacement Parts List Parts List (SP3 chassis) PART No. LOCATION No.
Multi type Air Conditioner 135301 437211 435512 552117 548490 552116 559010 552112 552113 546810 430410 447910 554160-1 W0CZZ-1 263230-2 649950 567502 554160-2 561411-3 561411-2 135314 668711-2 668711-1 561411-1 137213-1 263230-1 W0CZZ-2 554031 435511 552203-2 552203-1 561410 137213-2 Exploded View & Replacement Parts List Outdoor Unit A3UH363FA0(LMU360HE), A3UC363FA0(LMU360CE)
Exploded View & Replacement Parts List Parts List (A3UH363FA0(LMU360HE), A3UC363FA0(LMU360CE)) LOCATION No. DESCRIPTION PART No.
May, 2006 Printed in Korea P/No.