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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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. 35°C(95°F)DB, 23.9°C(75°F)WB 2.Heating ... 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.
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. 35°C(95°F)DB, 23.9°C(75°F)WB 2.Heating ... 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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...damaged during operation. • Moisture may cause injury, accident, or damage to the product. • If the base collapses, the air conditioner could cause injury. does not deteriorate with it, causing property damage, product failure, and personal injury. Be especially careful of the ... Safety Precautions Do not modify or extend the power cable. • There is risk of fire or electric shock. 6 Multi type Air Conditioner For installation, always contact the dealer or an Authorized Service Center. • There is left open. Be cautious when unpacking and installing...
...damaged during operation. • Moisture may cause injury, accident, or damage to the product. • If the base collapses, the air conditioner could cause injury. does not deteriorate with it, causing property damage, product failure, and personal injury. Be especially careful of the ... Safety Precautions Do not modify or extend the power cable. • There is risk of fire or electric shock. 6 Multi type Air Conditioner For installation, always contact the dealer or an Authorized Service Center. • There is left open. Be cautious when unpacking and installing...
Service Manual
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... operating it together with a stove, etc. • There is risk of the product When the product is drained away properly. age. 90° 8 Multi type Air Conditioner When the product is risk of product damage or failure, or unintend- • This could step on connect the power supply plug or turn off...
... operating it together with a stove, etc. • There is risk of the product When the product is drained away properly. age. 90° 8 Multi type Air Conditioner When the product is risk of product damage or failure, or unintend- • This could step on connect the power supply plug or turn off...
Service Manual
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... plastic parts of the product. • There is risk of damage or loss of air flow. It is a consumer air conditioner, not a precision refrigeration system. • There is risk of the product when removing the air filter. Use a soft cloth to lift and transport the product. Do not use the...Do not touch the metal parts of personal injury. Wax Thinner Service Manual 9 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 special purposes, such as preserving foods, works of art...
... plastic parts of the product. • There is risk of damage or loss of air flow. It is a consumer air conditioner, not a precision refrigeration system. • There is risk of the product when removing the air filter. Use a soft cloth to lift and transport the product. Do not use the...Do not touch the metal parts of personal injury. Wax Thinner Service Manual 9 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 special purposes, such as preserving foods, works of art...
Service Manual
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... in batteries could cause • Be careful and avoid personal serious health issues. Do not insert hands or other health hazards. 10 Multi type Air Conditioner Replace the all batteries in a fire. • They may burn or explode. Clean the filter every two weeks or more often if necessary....water drained Use a firm stool or ladder from the batteries gets onto your skin or clothes, wash it well with new ones of the air conditioner and could cause product malfunction or damage. • There are sharp and moving parts that could cause personal injury. If the liquid from ...
... in batteries could cause • Be careful and avoid personal serious health issues. Do not insert hands or other health hazards. 10 Multi type Air Conditioner Replace the all batteries in a fire. • They may burn or explode. Clean the filter every two weeks or more often if necessary....water drained Use a firm stool or ladder from the batteries gets onto your skin or clothes, wash it well with new ones of the air conditioner and could cause product malfunction or damage. • There are sharp and moving parts that could cause personal injury. If the liquid from ...
Service Manual
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... Liquid inch(mm) Gas Dimensions W*H*D inch(mm) Net Weight Outdoor kg(lbs) Max. 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 7.4~9.8 1,208/230,60 2 Rotary GK094K...
... Liquid inch(mm) Gas Dimensions W*H*D inch(mm) Net Weight Outdoor kg(lbs) Max. 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 7.4~9.8 1,208/230,60 2 Rotary GK094K...
Service Manual
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... sound from the wall, ceiling, fence or other obstacles. 6. niently routed away. 4. sary damage to prevent unneces- Take the air conditioner weight into account and select a place where noise and vibration are adequate for the unit location. Use a stud finder to locate studs... (7.9 inch) more than 20cm (7.9 inch) more than 70cm (27.6 inch) 16 Multi type Air Conditioner Installation Select the best location Indoor unit 1. Do not place animals and plants in front of the warm air. 4. Do not install near the unit. 2. Ensure the spaces indicated by arrows around front, ...
... sound from the wall, ceiling, fence or other obstacles. 6. niently routed away. 4. sary damage to prevent unneces- Take the air conditioner weight into account and select a place where noise and vibration are adequate for the unit location. Use a stud finder to locate studs... (7.9 inch) more than 20cm (7.9 inch) more than 70cm (27.6 inch) 16 Multi type Air Conditioner Installation Select the best location Indoor unit 1. Do not place animals and plants in front of the warm air. 4. Do not install near the unit. 2. Ensure the spaces indicated by arrows around front, ...
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 It is through the wall for piping connections must be strong and solid enough to use anchor bolts. • Mount the installation plate horizontally by...
...) 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 It is through the wall for piping connections must be strong and solid enough to use anchor bolts. • Mount the installation plate horizontally by...
Service Manual
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... power. Check the fixed product with plastic anchors, and fix completely the upper screws. Horizontality INSTALLATION GUIDE MAP Indoor WALL Outdoor 5-7mm (0.2~0.3") 20 Multi type Air Conditioner Make a hole with diameter of 6mm and depth of piercing rear surface) 2. INSTALLATION GUIDE MAP Refer to the outdoor side. 6. INSTALLATION GUIDE MAP 7. Drive the...
... power. Check the fixed product with plastic anchors, and fix completely the upper screws. Horizontality INSTALLATION GUIDE MAP Indoor WALL Outdoor 5-7mm (0.2~0.3") 20 Multi type Air Conditioner Make a hole with diameter of 6mm and depth of piercing rear surface) 2. INSTALLATION GUIDE MAP Refer to the outdoor side. 6. INSTALLATION GUIDE MAP 7. Drive the...
Service Manual
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... the cable for installation through the wall. 2. Inclined Surface Cracked Uneven damaged thickness For right rear piping 1. If a flared section 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 Tape the tubing...
... the cable for installation through the wall. 2. Inclined Surface Cracked Uneven damaged thickness For right rear piping 1. If a flared section 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 Tape the tubing...
Service Manual
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... for easy connection later. 4. Align the center 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...
... for easy connection later. 4. Align the center 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. Drive two screws. 26 Multi type Air Conditioner First, Check the side cover assembly exactly, Fix power cord in the bottom groove of panel front Panel Front Connector 3. 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. Drive two screws. 26 Multi type Air Conditioner First, Check the side cover assembly exactly, Fix power cord in the bottom groove of panel front Panel Front Connector 3. Flaring Work and Connection of Piping I Panel Assembly(Art Cool Type only) 1.
Service Manual
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... of Piping REMOTE CONTROL PREPARATION(OPTIONAL) HOW TO MOUNT ONTO A WALL HOW TO INSERT BATTERIES Remove the battery cover from the remote controller if the air conditioner is not going to the arrow direction. Insert the two batteries. • Be sure that the (+) and (-) directions are correct. • Be sure that both..., 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
... of Piping REMOTE CONTROL PREPARATION(OPTIONAL) HOW TO MOUNT ONTO A WALL HOW TO INSERT BATTERIES Remove the battery cover from the remote controller if the air conditioner is not going to the arrow direction. Insert the two batteries. • Be sure that the (+) and (-) directions are correct. • Be sure that both..., 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
Service Manual
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... wire as the power cord, please fix the separate wire into the control box panel by using tie wrap as the fixture. 30 Multi type Air Conditioner The circuit diagram is not subject to the indoor and outdoor unit should be complied with the following specifications (ETL recognized and CSA certified). The... the wires according to color codes by connecting the wires to the terminals on the inside of the Outdoor Unit control cover. Main power source Air Conditioner Circuit Breaker Use a circuit breaker or time delay fuse. AWG18 Low voltage (below .
... wire as the power cord, please fix the separate wire into the control box panel by using tie wrap as the fixture. 30 Multi type Air Conditioner The circuit diagram is not subject to the indoor and outdoor unit should be complied with the following specifications (ETL recognized and CSA certified). The... the wires according to color codes by connecting the wires to the terminals on the inside of the Outdoor Unit control cover. Main power source Air Conditioner Circuit Breaker Use a circuit breaker or time delay fuse. AWG18 Low voltage (below .
Service Manual
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... malfunction. 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 Therefore, be sure all wiring is pulled outside up to a 35 pound weight. (6) Wind the vinyl tape round the connecting cable for sealing between Indoor...
... malfunction. 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 Therefore, be sure all wiring is pulled outside up to a 35 pound weight. (6) Wind the vinyl tape round the connecting cable for sealing between Indoor...
Service Manual
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... chassis. • Press the Grille toward the chassis until it will be back into place. Connect the wires to the indoor unit 1. Main power source Air Conditioner Circuit Breaker Use a circuit breaker or time delay fuse. are the same as shown below. Service Manual 33
... chassis. • Press the Grille toward the chassis until it will be back into place. Connect the wires to the indoor unit 1. Main power source Air Conditioner Circuit Breaker Use a circuit breaker or time delay fuse. are the same as shown below. Service Manual 33
Service Manual
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... Do not make drain piping. Pour a glass of drain hose dipped in water Water leakage Ditch Less than 50mm gap 34 Multi type Air Conditioner 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. Downward slope Do not raise Accumulated drain water Air Water leakage Water leakage Waving Tip of water on the evaporator. 2. Ensure the water flows through the drain hose of the indoor unit...
... Do not make drain piping. Pour a glass of drain hose dipped in water Water leakage Ditch Less than 50mm gap 34 Multi type Air Conditioner 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. Downward slope Do not raise Accumulated drain water Air Water leakage Water leakage Waving Tip of water on the evaporator. 2. Ensure the water flows through the drain hose of the indoor unit...
Service Manual
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Pressure in vertical standing position) 36 Multi type Air Conditioner Check that each indoor unit connection set, separately. The high side manifold valve must be higher than 150 P.S.I .G. Be sure to be done for leak ... a manifold valve for each tube(both the liquid and the gas side service valves on the outdoor unit. Water may freeze and block capillary tubing. 5. Air Purging and Evacuation Air Purging and Evacuation Air and moisture remaining in the refrigeration system. CAUTION: Be sure to this stage. Bubbles indicate a leak.
Pressure in vertical standing position) 36 Multi type Air Conditioner Check that each indoor unit connection set, separately. The high side manifold valve must be higher than 150 P.S.I .G. Be sure to be done for leak ... a manifold valve for each tube(both the liquid and the gas side service valves on the outdoor unit. Water may freeze and block capillary tubing. 5. Air Purging and Evacuation Air Purging and Evacuation Air and moisture remaining in the refrigeration system. CAUTION: Be sure to this stage. Bubbles indicate a leak.