Service Manual
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website http://www.lgservice.com LG Multi Type Air Conditioner SERVICE MANUAL MODEL • Indoor Unit: Room Type AMNH093D4A0(LMN090HE) AMNH123DEA0 (LMN120HE) AMNC093D4A0(LMN090CE) AMNC123DEA0 (LMN120CE) Art Cool Type AMNH093APM0(LMAN090HNS) AMNH123APM0(LMAN120HNS) AMNC093APM0(LMAN090CNS) AMNC123APM0(LMAN120CNS) • Outdoor Unit: A2UH243FA0(LMU240HE) A2UC243FA0 (LMU240CE) LG CAUTION • BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. • ONLY FOR AUTHORIZED SERVICE PERSONNEL.
website http://www.lgservice.com LG Multi Type Air Conditioner SERVICE MANUAL MODEL • Indoor Unit: Room Type AMNH093D4A0(LMN090HE) AMNH123DEA0 (LMN120HE) AMNC093D4A0(LMN090CE) AMNC123DEA0 (LMN120CE) Art Cool Type AMNH093APM0(LMAN090HNS) AMNH123APM0(LMAN120HNS) AMNC093APM0(LMAN090CNS) AMNC123APM0(LMAN120CNS) • Outdoor Unit: A2UH243FA0(LMU240HE) A2UC243FA0 (LMU240CE) LG CAUTION • BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. • ONLY FOR AUTHORIZED SERVICE PERSONNEL.
Service Manual
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Multi type Air Conditioner Service Manual TABLE OF CONTENTS Model Number Nomenclature ...3 Symbols Used in this Manual ...4 Safety Precautions...5 Dimensions...11 Indoor Unit... indoor unit...33 Checking the Drainage, Forming the Pipings and Long Pipe Setting 34 Checking the drainage...34 Forming the piping...35 Air Purging and Evacuation ...36 Checking method ...36 Evacuation...37 Charging ...38 Test Running ...39 Operation ...40 Function of control...40 Function...2-way, 3-way Valve ...78 Exploded View & Replacement Parts List 82 Indoor Unit ...82 Outdoor Unit ...86 2 Multi type Air Conditioner
Multi type Air Conditioner Service Manual TABLE OF CONTENTS Model Number Nomenclature ...3 Symbols Used in this Manual ...4 Safety Precautions...5 Dimensions...11 Indoor Unit... indoor unit...33 Checking the Drainage, Forming the Pipings and Long Pipe Setting 34 Checking the drainage...34 Forming the piping...35 Air Purging and Evacuation ...36 Checking method ...36 Evacuation...37 Charging ...38 Test Running ...39 Operation ...40 Function of control...40 Function...2-way, 3-way Valve ...78 Exploded View & Replacement Parts List 82 Indoor Unit ...82 Outdoor Unit ...86 2 Multi type Air Conditioner
Service Manual
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...;F)WB 2.Heating Capacity is based on : indoor temp. 21.1°C(70°F)DB, 15.6°C(60.1°F)WB; This symbol indicates special notes. 4 Multi type Air Conditioner Model Number Nomenclature Combination table Operation 1 Unit 2 Unit Combination of electric shock. outdoor temp. 8.3°C(46.9°F)DB, 6.1°C(43°F)WB 3.The total ability... Notes : 1.Cooling Capacity is based on : indoor temp. 26.7°C(80.1°F)DB, 19.4°C(66.9°F)WB; NOTICE This symbol alerts you to the air conditioner.
...;F)WB 2.Heating Capacity is based on : indoor temp. 21.1°C(70°F)DB, 15.6°C(60.1°F)WB; This symbol indicates special notes. 4 Multi type Air Conditioner Model Number Nomenclature Combination table Operation 1 Unit 2 Unit Combination of electric shock. outdoor temp. 8.3°C(46.9°F)DB, 6.1°C(43°F)WB 3.The total ability... Notes : 1.Cooling Capacity is based on : indoor temp. 26.7°C(80.1°F)DB, 19.4°C(66.9°F)WB; NOTICE This symbol alerts you to the air conditioner.
Service Manual
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..., and personal injury. Do not install, remove, or reinstall the unit by yourself (customer). • There is left open. Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is risk of fire, electric shock, explosion, or injury.... For installation, always contact the dealer or an Authorized Service Center. • There is risk of fire or electric shock. 6 Multi type Air Conditioner Do not place anything on the power cable. • There is risk of fire, electric shock, explosion, or injury. Safety Precautions Do not modify...
..., and personal injury. Do not install, remove, or reinstall the unit by yourself (customer). • There is left open. Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is risk of fire, electric shock, explosion, or injury.... For installation, always contact the dealer or an Authorized Service Center. • There is risk of fire or electric shock. 6 Multi type Air Conditioner Do not place anything on the power cable. • There is risk of fire, electric shock, explosion, or injury. Safety Precautions Do not modify...
Service Manual
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... failure, or unintend- • This could result in personal injury and product dam- Turn the main power off the breaker. age. 90° 8 Multi type Air Conditioner
... failure, or unintend- • This could result in personal injury and product dam- Turn the main power off the breaker. age. 90° 8 Multi type Air Conditioner
Service Manual
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.... • It may cause a problem for your health. Do not use harsh detergents, solvents, etc. Wax Thinner Service Manual 9 It is a consumer air conditioner, not a precision refrigeration system. • There is risk of art, etc. Do not block the inlet or outlet of property. I Operational Do not expose... They are very sharp! • It may cause product failure. • There is risk of fire, electric shock, or damage to cool air for special purposes, such as preserving foods, works of personal injury. Use a soft cloth to lift and transport the product. Do not use ...
.... • It may cause a problem for your health. Do not use harsh detergents, solvents, etc. Wax Thinner Service Manual 9 It is a consumer air conditioner, not a precision refrigeration system. • There is risk of art, etc. Do not block the inlet or outlet of property. I Operational Do not expose... They are very sharp! • It may cause product failure. • There is risk of fire, electric shock, or damage to cool air for special purposes, such as preserving foods, works of personal injury. Use a soft cloth to lift and transport the product. Do not use ...
Service Manual
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... new ones of fire or explosion Do not recharge or disassemble the batteries. Do not insert hands or other health hazards. 10 Multi type Air Conditioner Do not mix old and new batteries or different types of batteries. • 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. • There are sharp and moving parts that could cause personal injury. Do not dispose of batteries...
... new ones of fire or explosion Do not recharge or disassemble the batteries. Do not insert hands or other health hazards. 10 Multi type Air Conditioner Do not mix old and new batteries or different types of batteries. • 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. • There are sharp and moving parts that could cause personal injury. Do not dispose of batteries...
Service Manual
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...75°F)WB -Interconnecting Piping Length 7.5m -Level Difference of Zero. 2. Used / Diameter EA/inch(mm) Discharge Side / Top Air Circulation Outdoor CMM(CFM) Noise Level(H/L) at 230V Sound Press,1m dB(A) 1 Defrosting SVC Valve Liquid inch(mm) Gas Dimensions W*H*D inch... m Max. Product Specifications Outdoor Unit - Interunit Piping Length Total of innovation some specifications may be changed without notification. 14 Multi type Air Conditioner A2UH243FA0(LMU240HE) 9,000~24,000 2637~7033 2267~6037 9,000~24,000 2637~7033 2267~6037 1170~2390 1220~2440 7.7~10.1 ...
...75°F)WB -Interconnecting Piping Length 7.5m -Level Difference of Zero. 2. Used / Diameter EA/inch(mm) Discharge Side / Top Air Circulation Outdoor CMM(CFM) Noise Level(H/L) at 230V Sound Press,1m dB(A) 1 Defrosting SVC Valve Liquid inch(mm) Gas Dimensions W*H*D inch... m Max. Product Specifications Outdoor Unit - Interunit Piping Length Total of innovation some specifications may be changed without notification. 14 Multi type Air Conditioner A2UH243FA0(LMU240HE) 9,000~24,000 2637~7033 2267~6037 9,000~24,000 2637~7033 2267~6037 1170~2390 1220~2440 7.7~10.1 ...
Service Manual
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...10cm More than 2m More than 50cm more than 20cm (7.9 inch) more than 20cm (7.9 inch) more than 70cm (27.6 inch) 16 Multi type Air Conditioner Use a stud finder to locate studs to prevent direct sunlight or rain exposure, make sure that condensation drainage can be sure to the wall. If... an awning is installed on the wall where the height from the air conditioner do not disturb neighbors. Make sure that heat radiation from the wall, ceiling, fence or other obstacles. 6. Ensure the spaces indicated by ...
...10cm More than 2m More than 50cm more than 20cm (7.9 inch) more than 20cm (7.9 inch) more than 70cm (27.6 inch) 16 Multi type Air Conditioner Use a stud finder to locate studs to prevent direct sunlight or rain exposure, make sure that condensation drainage can be sure to the wall. If... an awning is installed on the wall where the height from the air conditioner do not disturb neighbors. Make sure that heat radiation from the wall, ceiling, fence or other obstacles. 6. Ensure the spaces indicated by ...
Service Manual
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...) A B C D S4 50 105 59 105 SE 65 110 85 110 D Installation plate B C Ø70mm Left rear piping A Ø70mm Right rear piping 18 Multi type Air Conditioner If mounting the unit on the wall with type "A" screws. Mount the installation plate on a concrete wall, use caution concerning the location of the installation...
...) A B C D S4 50 105 59 105 SE 65 110 85 110 D Installation plate B C Ø70mm Left rear piping A Ø70mm Right rear piping 18 Multi type Air Conditioner If mounting the unit on the wall with type "A" screws. Mount the installation plate on a concrete wall, use caution concerning the location of the installation...
Service Manual
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... the wire. (Installation manual reference) I Sticking the installation guide map and fixing Indoor unit 1. Horizontality INSTALLATION GUIDE MAP Indoor WALL Outdoor 5-7mm (0.2~0.3") 20 Multi type Air Conditioner
... the wire. (Installation manual reference) I Sticking the installation guide map and fixing Indoor unit 1. Horizontality INSTALLATION GUIDE MAP Indoor WALL Outdoor 5-7mm (0.2~0.3") 20 Multi type Air Conditioner
Service Manual
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... connect the cable to overflow inside the room, insulate the hose with an insulation material* so that the drain hose is recommended. 22 Multi type Air Conditioner Drain hose Drain hose Tape Connecting pipe Drain hose Connecting cable Connecting cable Drain hose Loop Gas side piping Liquid side piping Be sure that...
... connect the cable to overflow inside the room, insulate the hose with an insulation material* so that the drain hose is recommended. 22 Multi type Air Conditioner Drain hose Drain hose Tape Connecting pipe Drain hose Connecting cable Connecting cable Drain hose Loop Gas side piping Liquid side piping Be sure that...
Service Manual
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... extending the drain hose at the top of the indoor unit from the hooks at the indoor unit, install the drain pipe. 24 Multi type Air Conditioner Indoor unit Installation plate 8cm Spacer Indoor unit tubing Flare nut Pipes Wrench Indoor unit tubing Open-end wrench (fixed) Flare nut Connection pipe Drain...
... extending the drain hose at the top of the indoor unit from the hooks at the indoor unit, install the drain pipe. 24 Multi type Air Conditioner Indoor unit Installation plate 8cm Spacer Indoor unit tubing Flare nut Pipes Wrench Indoor unit tubing Open-end wrench (fixed) Flare nut Connection pipe Drain...
Service Manual
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Assemble connecting lead wire with controller and first fix the upper part of panel front, then match the lower part of cover side left. 2. First, Check the side cover assembly exactly, Fix power cord in the bottom groove of panel front Panel Front Connector 3. Drive two screws. 26 Multi type Air Conditioner Flaring Work and Connection of Piping I Panel Assembly(Art Cool Type only) 1.
Assemble connecting lead wire with controller and first fix the upper part of panel front, then match the lower part of cover side left. 2. First, Check the side cover assembly exactly, Fix power cord in the bottom groove of panel front Panel Front Connector 3. Drive two screws. 26 Multi type Air Conditioner Flaring Work and Connection of Piping I Panel Assembly(Art Cool Type only) 1.
Service Manual
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..., and performance. • Romove the batteries from the remote controller. • Slide the cover according to be used for some long time. 28 Multi type Air Conditioner 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...
..., and performance. • Romove the batteries from the remote controller. • Slide the cover according to be used for some long time. 28 Multi type Air Conditioner 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...
Service Manual
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... the wires firmly, so that the color of the wires of Indoor Unit. are the same as the fixture. 30 Multi type Air Conditioner The circuit diagram is not subject to change without notice. • Be sure to connect wires according to the terminals on the ... • The circuit diagram is not subject to be complied with the following specifications (ETL recognized and CSA certified). Main power source Air Conditioner Circuit Breaker Use a circuit breaker or time delay fuse. RECOMMAND: Provide a circuit breaker between Indoor Unit and Outdoor Unit Connect the cable...
... the wires firmly, so that the color of the wires of Indoor Unit. are the same as the fixture. 30 Multi type Air Conditioner The circuit diagram is not subject to change without notice. • Be sure to connect wires according to the terminals on the ... • The circuit diagram is not subject to be complied with the following specifications (ETL recognized and CSA certified). Main power source Air Conditioner Circuit Breaker Use a circuit breaker or time delay fuse. RECOMMAND: Provide a circuit breaker between Indoor Unit and Outdoor Unit Connect the cable...
Service Manual
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... exist. High voltage Strand wire Round terminal Strip 10mm(3/8") Loosening the terminal block screw Low voltage Fastening the wire tightly Connecting cable 32 Multi type Air Conditioner How to connect wiring to the terminals For strand wiring (1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip the insulation...
... exist. High voltage Strand wire Round terminal Strip 10mm(3/8") Loosening the terminal block screw Low voltage Fastening the wire tightly Connecting cable 32 Multi type Air Conditioner How to connect wiring to the terminals For strand wiring (1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip the insulation...
Service Manual
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Connect the wires to the terminals on the top inside edge of indoor unit respectively. Service Manual 33 Main power source Air Conditioner Circuit Breaker Use a circuit breaker or time delay fuse. Connecting cable 2. Attach the Grille onto the cabinet. • Grasp the lower left and right side ...
Connect the wires to the terminals on the top inside edge of indoor unit respectively. Service Manual 33 Main power source Air Conditioner Circuit Breaker Use a circuit breaker or time delay fuse. Connecting cable 2. Attach the Grille onto the cabinet. • Grasp the lower left and right side ...
Service Manual
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.... 1. Ensure the water flows through the drain hose of water on the evaporator. 2. Downward slope Do not raise Accumulated drain water Air Water leakage Water leakage Waving Tip of drain hose dipped in water Water leakage Ditch Less than 50mm gap 34 Multi type Air Conditioner Do not make drain piping. Drain piping 1.
.... 1. Ensure the water flows through the drain hose of water on the evaporator. 2. Downward slope Do not raise Accumulated drain water Air Water leakage Water leakage Waving Tip of drain hose dipped in water Water leakage Ditch Less than 50mm gap 34 Multi type Air Conditioner Do not make drain piping. Drain piping 1.
Service Manual
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... system have been properly connected and all joints of the cylinder must be done for leak testing. Moisture in vertical standing position) 36 Multi type Air Conditioner The high side manifold valve must always be free of parts in the system rises. 2. When the system pressure is reduced to wipe off the... unit connection set, separately. Be sure to normal, disconnect the hose from both the liquid and the gas side service valves on the outdoor unit. Air Purging and Evacuation Air Purging and Evacuation Air and moisture remaining in the system.
... system have been properly connected and all joints of the cylinder must be done for leak testing. Moisture in vertical standing position) 36 Multi type Air Conditioner The high side manifold valve must always be free of parts in the system rises. 2. When the system pressure is reduced to wipe off the... unit connection set, separately. Be sure to normal, disconnect the hose from both the liquid and the gas side service valves on the outdoor unit. Air Purging and Evacuation Air Purging and Evacuation Air and moisture remaining in the system.