Service Manual
Page 1
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
Page 2
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...11 Outdoor Unit ...12 Product Specifications ...13 Installation ...15 Installation Parts...15 ...
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...11 Outdoor Unit ...12 Product Specifications ...13 Installation ...15 Installation Parts...15 ...
Service Manual
Page 3
...Outdoor Unit Electrical Rating 3: 1Ø, 208~230V, 60Hz Nominal Cooling Capacity in Btu/h Ex) 9,000 Btu/h '09', 12,000 Btu/h '12' Model Type H: Heat Pump C: Cooling Only MPS Variable Multi System Indoor Unit A2U H 24 3 F A 0 Serial Number Function A : Basic Multi Type ...of Connectable Indoor Units Ex) A2U : Connectable max. 2 Indoor Units Service Manual 3 look type N : N- look type G : G- look type L : L- 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(...
...Outdoor Unit Electrical Rating 3: 1Ø, 208~230V, 60Hz Nominal Cooling Capacity in Btu/h Ex) 9,000 Btu/h '09', 12,000 Btu/h '12' Model Type H: Heat Pump C: Cooling Only MPS Variable Multi System Indoor Unit A2U H 24 3 F A 0 Serial Number Function A : Basic Multi Type ...of Connectable Indoor Units Ex) A2U : Connectable max. 2 Indoor Units Service Manual 3 look type N : N- look type G : G- look type L : L- 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(...
Service Manual
Page 4
NOTICE This symbol alerts you to the 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 Capacity ...
NOTICE This symbol alerts you to the 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 Capacity ...
Service Manual
Page 11
Dimensions Indoor Unit 1. Art Cool Type Indoor Unit W D H Pipe Hole Hanger Hole Installation plate Fix Hole Dimension W H D Model mm mm mm Split Type S4 SE 9 kBtu/h 12 kBtu/h 840 895 270 282 153 165 ARTCOOL Type SP3 9 kBtu/h 12 kBtu/h 570 568 129 Service Manual 11 Split Type Indoor H D W Dimensions 2.
Dimensions Indoor Unit 1. Art Cool Type Indoor Unit W D H Pipe Hole Hanger Hole Installation plate Fix Hole Dimension W H D Model mm mm mm Split Type S4 SE 9 kBtu/h 12 kBtu/h 840 895 270 282 153 165 ARTCOOL Type SP3 9 kBtu/h 12 kBtu/h 570 568 129 Service Manual 11 Split Type Indoor H D W Dimensions 2.
Service Manual
Page 13
...973*231*372) 353/719 (792) Indoor Unit Type Nominal Cooling Capacity # Model Nominal Heating Capacity # Air Circulation H/M/L Setting temperature range(cool/heat) Fan motor Output Model No. of Poles Input Running Current Fan Type No. Product Specifications Product Specifications ...Indoor Unit Indoor Unit Type Nominal Cooling Capacity # Model Nominal Heating Capacity # Air Circulation H/M/L Setting temperature range(cool/heat) Fan motor Output Model Input Running Current Fan Type No. of Rows & Column Dehumidification ...
...973*231*372) 353/719 (792) Indoor Unit Type Nominal Cooling Capacity # Model Nominal Heating Capacity # Air Circulation H/M/L Setting temperature range(cool/heat) Fan motor Output Model No. of Poles Input Running Current Fan Type No. Product Specifications Product Specifications ...Indoor Unit Indoor Unit Type Nominal Cooling Capacity # Model Nominal Heating Capacity # Air Circulation H/M/L Setting temperature range(cool/heat) Fan motor Output Model Input Running Current Fan Type No. of Rows & Column Dehumidification ...
Service Manual
Page 14
...Type Capacitor µF/Vac O.L.P Type(model name) Refrigerant charge Charge g(oz) Type Control Coil Tube Size (OD) inch(mm) Fins per inch No. of innovation some specifications may be changed without notification. 14 Multi type Air Conditioner A2UH243FA0(LMU240HE) 9,000~24,000 2637~7033 ....5*12.6 (870*800*320) 69(152) 30 15 7.5 7.5 40.2*34.3*17.3 (1020*870*440) SE 12K +SE 12K 54/114 Multiple piping models Model Cooling Capacity# Btu/hr W kcal/hr Heating Capacity# Btu/hr W kcal/hr Input# Cooling W Heating W Running Current#(208/230V) Cooling A Heating ...
...Type Capacitor µF/Vac O.L.P Type(model name) Refrigerant charge Charge g(oz) Type Control Coil Tube Size (OD) inch(mm) Fins per inch No. of innovation some specifications may be changed without notification. 14 Multi type Air Conditioner A2UH243FA0(LMU240HE) 9,000~24,000 2637~7033 ....5*12.6 (870*800*320) 69(152) 30 15 7.5 7.5 40.2*34.3*17.3 (1020*870*440) SE 12K +SE 12K 54/114 Multiple piping models Model Cooling Capacity# Btu/hr W kcal/hr Heating Capacity# Btu/hr W kcal/hr Input# Cooling W Heating W Running Current#(208/230V) Cooling A Heating ...
Service Manual
Page 33
Main power source Air Conditioner Circuit Breaker Use a circuit breaker or time delay fuse. Connecting cable 2. Service Manual 33 Model 24k Power source Fuse or breaker Capacity 1Ø, 230/208V 25A Connect the cable to the outdoor unit connection. • Ensure that the color of ...
Main power source Air Conditioner Circuit Breaker Use a circuit breaker or time delay fuse. Connecting cable 2. Service Manual 33 Model 24k Power source Fuse or breaker Capacity 1Ø, 230/208V 25A Connect the cable to the outdoor unit connection. • Ensure that the color of ...
Service Manual
Page 45
...switched to low speed. * Airflow Direction Control • The louver can be set at the desired position or swing up and down automatically.(Model base) Deice (defrost) control (Heating) • Both the indoor and outdoor fan stops during deicing. • Hot start Control (Heating... Current Control • Indoor fan is dependent on model type. Defrost Mode : Lights up during Defrost Mode or Hot Start operation (Heat pump model only) Outdoor unit : Lights up during outdoor unit operation.(Cooling model only) operation Desire temperature For cooling,dehumidification,heating modes...
...switched to low speed. * Airflow Direction Control • The louver can be set at the desired position or swing up and down automatically.(Model base) Deice (defrost) control (Heating) • Both the indoor and outdoor fan stops during deicing. • Hot start Control (Heating... Current Control • Indoor fan is dependent on model type. Defrost Mode : Lights up during Defrost Mode or Hot Start operation (Heat pump model only) Outdoor unit : Lights up during outdoor unit operation.(Cooling model only) operation Desire temperature For cooling,dehumidification,heating modes...
Service Manual
Page 46
...up during Sleep Mode Auto operation. : Lights up during Timer operation. : Lights up during Defrost Mode or Hot Start operation.(Heat pump model only) : Lights up and down automatically. Soft Dry Operation Mode • Intermittent operation of fan at 28°C(82.4°F). 46 ... to low speed. Defrost(Deice) control (Heating) • Both the indoor and outdoor fan stops during outdoor unit operation.(Cooling model only) Desire temperature For cooling,dehumidification,heating modes it is operating with the Setting Temp. Natural Air Control by Remote controller Sensing...
...up during Sleep Mode Auto operation. : Lights up during Timer operation. : Lights up during Defrost Mode or Hot Start operation.(Heat pump model only) : Lights up and down automatically. Soft Dry Operation Mode • Intermittent operation of fan at 28°C(82.4°F). 46 ... to low speed. Defrost(Deice) control (Heating) • Both the indoor and outdoor fan stops during outdoor unit operation.(Cooling model only) Desire temperature For cooling,dehumidification,heating modes it is operating with the Setting Temp. Natural Air Control by Remote controller Sensing...
Service Manual
Page 47
... is modulated to Oil Return System • In single(one) comp operation duration, another comp will turn off comp A Service Manual 47 R/Valve Control(Heating Model Only) • Convert R/Valve to change cooling to heating, heating to cooling. Operating Step • Compressor step varies considering condition such as room temp,outdoor...
... is modulated to Oil Return System • In single(one) comp operation duration, another comp will turn off comp A Service Manual 47 R/Valve Control(Heating Model Only) • Convert R/Valve to change cooling to heating, heating to cooling. Operating Step • Compressor step varies considering condition such as room temp,outdoor...
Service Manual
Page 48
... 17 ˚C TO ˚F SWITCHING BUTTON Used to switch temperature reading from Centigrade to Fahrenheit. 18 HORIZONTAL AIRFLOW DIRECTION CONTROL BUTTON (NOT ON ALL MODELS) Used to the system. Signal transmitter 5 1 6 3 4 2 10 CANCEL 7 9 ON OFF SET 11 AUTO CLEAN 16 8 12 °...17 18 14 15 Flip-up door (opened) Operation Mode Cooling Operation Auto Operation Healthy Dehumidification Operation Heating Operation • Cooling Model( ), Heat Pump Model( ) 1 START/STOP BUTTON Operation starts when this button is pressed and stops when the button is pressed again. 2 ...
... 17 ˚C TO ˚F SWITCHING BUTTON Used to switch temperature reading from Centigrade to Fahrenheit. 18 HORIZONTAL AIRFLOW DIRECTION CONTROL BUTTON (NOT ON ALL MODELS) Used to the system. Signal transmitter 5 1 6 3 4 2 10 CANCEL 7 9 ON OFF SET 11 AUTO CLEAN 16 8 12 °...17 18 14 15 Flip-up door (opened) Operation Mode Cooling Operation Auto Operation Healthy Dehumidification Operation Heating Operation • Cooling Model( ), Heat Pump Model( ) 1 START/STOP BUTTON Operation starts when this button is pressed and stops when the button is pressed again. 2 ...
Service Manual
Page 65
... occurrence of error code, be sure to turn off the power and then turn on. • Having or not of error code is different from Model. D-Pipe Thermistor Error(Open/Short) 51 Capcity Error(High/Low) 3 times 3 times OFF 4 times 4 times OFF 4 times 5 times OFF 4 times 7 times OFF 5 times 1 times OFF...
... occurrence of error code, be sure to turn off the power and then turn on. • Having or not of error code is different from Model. D-Pipe Thermistor Error(Open/Short) 51 Capcity Error(High/Low) 3 times 3 times OFF 4 times 4 times OFF 4 times 5 times OFF 4 times 7 times OFF 5 times 1 times OFF...
Service Manual
Page 74
Error code Title 51 Capacitor error Cause of refrigerent. 4. Check the combination table. # In the tropical model case ➔ single cycle has no error for over load. 2. Check the SVC V/V open . 115°C(239°F) 100°C(212°F) 95°C(203&#...
Error code Title 51 Capacitor error Cause of refrigerent. 4. Check the combination table. # In the tropical model case ➔ single cycle has no error for over load. 2. Check the SVC V/V open . 115°C(239°F) 100°C(212°F) 95°C(203&#...
Service Manual
Page 85
SVC A2UH243FA0(LMU240HE) A2UC243FA0 (LMU240CE) CODE 437210 PANEL ASSEMBLY,FRONT(SUB) 1A00197C 1A00197C R 137213-1 PANEL ASSEMBLY,SIDE 1A00202F 1A00202F R 137213-2 PANEL ASSEMBLY,SIDE 3A02284R 3A02284R R 435300 GRILLE,REAR ... these parts may be changed depending upon the buyer's request. (GCSC WEBSITE http://biz.LGservice.com) Solenoid(Coil Assempy, Reverse) is only for heat pump model. Service Manual 85 Description Part No. Exploded View & Replacement Parts List Parts List (A2UH243FA0...
SVC A2UH243FA0(LMU240HE) A2UC243FA0 (LMU240CE) CODE 437210 PANEL ASSEMBLY,FRONT(SUB) 1A00197C 1A00197C R 137213-1 PANEL ASSEMBLY,SIDE 1A00202F 1A00202F R 137213-2 PANEL ASSEMBLY,SIDE 3A02284R 3A02284R R 435300 GRILLE,REAR ... these parts may be changed depending upon the buyer's request. (GCSC WEBSITE http://biz.LGservice.com) Solenoid(Coil Assempy, Reverse) is only for heat pump model. Service Manual 85 Description Part No. Exploded View & Replacement Parts List Parts List (A2UH243FA0...
