LG ARNU073BHA2 Guide

Multi V Air Conditioner
SVC MANUAL(Exploded View)
MODEL : ARNU073BHA2
ARNU093BHA2
ARNU123BHA2
ARNU153BHA2
ARNU183BHA2
ARNU243BHA2
ARNU283BGA2
ARNU363BGA2
ARNU423BGA2
ARNU483BRA2
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.
Internal Use Only
http://biz.lgservice.com

- 2 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
1. Specification
Notes:-
1. Capacities are based on the following conditions:
Cooling • Indoor temp. 27°C[80.6°F]DB/ 19°C[66.2°F]WB
• Outdoor temp. 35°C[95°F]DB/ 24°C[75.2°F]WB
• Interconnecting Piping Length 7.5m(24.6ft)
• Level Difference of Zero
Heating • Indoor temp. 20°C[68°F]DB/ 15°C[59°F]WB
• Outdoor temp. 7°C[44.6°F]DB/ 6°C[42.8°F]WB
• Interconnecting Piping Length 7.5m(24.6ft)
• Level Difference of Zero
2. Capacities are net capacities
3. Due to our policy of innovation some specifications may be changed without prior notification
4. To be added for more available Models
5. EEV : Electronic Expansion Valve
6. Noise Level is Standard Mode
(for actual High Mode(factory set) condition, Noise Level may exceed the standard level by 1.5dBA)
Conversion Formula
kcal/h= kW x 860
Btu/h = kW x 3412
cfm = m3/min x 35.3
l/s = CMM x 1000/60
Type
Model Unit
kW
Cooling Capacity kcal/h
Btu/h
kW
Heating Capacity kcal/h
Btu/h
Casing
Dimensions(WxDxH)
Body mm
inch
Coil
Rows x Columns x FPI
Face Area m2(ft2)
Type
Motor Output x Number W
Running Current A
Air Flow Rate(H/M/L) cmm
(High Mode-factory set)
cfm
Fan External Static Pressure mmAq (in.Aq)
Air Flow Rate(H/M/L) cmm
(Standard Mode) cfm
External Static Pressure mmAq (in.Aq)
Drive
Motor type
Temperature Control
Sound Absorbing Thermal Insulation Material
Air Filter
Safety Device
Liquid Side mm(inch)
Pipe Connections Gas Side mm(inch)
Drain Pipe(Internal Dia.) mm(inch)
Net Weight kg(lbs)
Noise Level (Sound Press, 1.5m(4.9ft) H/M/L) dB(A)±3
Power Supply Ø, V, Hz
Refrigerant Control
Power cable mm2
Transmission Cable (AWG#-C) mm2
Ceiling Concealed Duct -High Static
ARNU073BHA2 ARNU093BHA2 ARNU123BHA2 ARNU153BHA2
2.2 2.8 3.6 4.5
1,900 2,400 3,100 3,900
7,500 9,600 12,300 15,400
2.5 3.2 4.0 5.0
2,200 2,800 3,400 4,300
8,500 10,900 13,600 17,100
Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate
882x450x260 882x450x260 882x450x260 882x450x260
34.7x17.7x10.2 34.7x17.7x10.2 34.7x17.7x10.2 34.7x17.7x10.2
2x10x21 2x10x21 2x10x21 2x10x21
0.15(1.63) 0.15(1.63) 0.15(1.63) 0.15(1.63)
Sirocco Fan Sirocco Fan Sirocco Fan Sirocco Fan
118 118 118 118
0.92 0.92 0.92 0.92
8.5/7.5/6 10/8.5/7.5 12/10/8.5 13.5/12/8.5
300/265/212 353/300/265 424/353/300 477/424/300
8(0.31) 8(0.31) 8(0.31) 8(0.31)
8.5/8/7.5 8.5/8/7.5 11/8.5/8 13.5/12/11
300/282/265 300/282/265 388/300/265 477/424/388
6(0.23) 6(0.23) 6(0.23) 6(0.23)
Direct Direct Direct Direct
BLDC BLDC BLDC BLDC
Microprocessor, Thermostat for cooling and heating Microprocessor, Thermostat for cooling and heating Microprocessor, Thermostat for cooling and heating Microprocessor, Thermostat for cooling and heating
Foamed polystrene Foamed polystrene Foamed polystrene Foamed polystrene
-- - -
Fuse Fuse Fuse Fuse
Ø6.35(1/4) Ø6.35(1/4) Ø6.35(1/4) Ø6.35(1/4)
Ø12.7(1/2) Ø12.7(1/2) Ø12.7(1/2) Ø12.7(1/2)
25.0(1) 25.0(1) 25.0(1) 25.0(1)
26(57.4) 26(57.4) 26(57.4) 26(57.4)
35/34/33 35/34/33 37/35/34 39/38/37
1,208/230,60 1,208/230,60 1,208/230,60 1,208/230,60
EEV EEV EEV EEV
CV1.5 x 3C CV1.5 x 3C CV1.5 x 3C CV1.5 x 3C
CVV-SB 1.25x2C (12-2) CVV-SB 1.25x2C (12-2) CVV-SB 1.25x2C (12-2) CVV-SB 1.25x2C (12 - 2)

- 3 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Notes:-
1. Capacities are based on the following conditions:
Cooling • Indoor temp. 27°C[80.6°F]DB/ 19°C[66.2°F]WB
• Outdoor temp. 35°C[95°F]DB/ 24°C[75.2°F]WB
• Interconnecting Piping Length 7.5m(24.6ft)
• Level Difference of Zero
Heating • Indoor temp. 20°C[68°F]DB/ 15°C[59°F]WB
• Outdoor temp. 7°C[44.6°F]DB/ 6°C[42.8°F]WB
• Interconnecting Piping Length 7.5m(24.6ft)
• Level Difference of Zero
2. Capacities are net capacities
3. Due to our policy of innovation some specifications may be changed without prior notification
4. To be added for more available Models
5. EEV : Electronic Expansion Valve
6. Noise Level is Standard Mode
(for actual High Mode(factory set) condition, Noise Level may exceed the standard level by 1.5dBA)
Conversion Formula
kcal/h= kW x 860
Btu/h = kW x 3412
cfm = m3/min x 35.3
l/s = CMM x 1000/60
Type
Model Unit
kW
Cooling Capacity kcal/h
Btu/h
kW
Heating Capacity kcal/h
Btu/h
Casing
Dimensions(WxDxH)
Body mm
inch
Coil
Rows x Columns x FPI
Face Area m2(ft2)
Type
Motor Output x Number W
Running Current A
Air Flow Rate(H/M/L) cmm
(High Mode-factory set) cfm
Fan External Static Pressure mmAq (in.Aq)
Air Flow Rate(H/M/L) cmm
(Standard Mode) cfm
External Static Pressure
mmAq (in.Aq)
Drive
Motor type
Temperature Control
Sound Absorbing Thermal Insulation Material
Air Filter
Safety Device
Liquid Side mm(inch)
Pipe Connections Gas Side mm(inch)
Drain Pipe(Internal Dia.)
mm(inch)
Net Weight kg(lbs)
Noise Level (Sound Press, 1.5m(4.9ft) H/M/L) dB(A)±3
Power Supply Ø, V, Hz
Refrigerant Control
Power cable mm2
Transmission Cable (AWG#-C) mm2
Ceiling Concealed Duct(High Static)
ARNU183BHA2 ARNU243BHA2 ARNU283BGA2
5.6 7.1 8.2
4,800 6,100 7,100
19,100 24,200 28,000
6.3 8.0 9.2
5,400 6,900 8,000
21,500 27,300 31,500
Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate
882x450x260 882x450x260 1,182x450x298
34.7x17.7x10.2 34.7x17.7x10.2 46.5x17.7x10.2
3x10x21 3x10x21 3x12x21
0.15(1.63) 0.15(1.63) 0.26(2.82)
Sirocco Fan Sirocco Fan Sirocco Fan
118 118 390
0.92 0.92 2.30
15.5/13.5/12.4 18.3/16.9/15.5 25.9/24.1/21.8
547/477/438 646/597/547 915/851/770
8(0.31) 8(0.31) 10(0.39)
15.3/13.6/10.3 19/16.4/14.5 25.3/21.8/17.6
540/480/364 671/579/512 893/770/622
6(0.23) 6(0.23) 8(0.31)
Direct Direct Direct
BLDC BLDC BLDC
Microprocessor, Thermostat for cooling and heating Microprocessor, Thermostat for cooling and heating Microprocessor, Thermostat for cooling and heating
Foamed polystrene Foamed polystrene Foamed polystrene
---
Fuse Fuse Fuse
Ø6.35(1/4) Ø9.52(3/8) Ø9.52(3/8)
Ø12.7(1/2) Ø15.88(5/8) Ø15.88(5/8)
25.0(1) 25.0(1) 25.0(1)
26.5(58.4) 26.5(58.4) 38(83.8)
42.5/41/37 45/43/41 44/42/40
1,208/230,60 1,208/230,60 1,208/230,60
EEV EEV EEV
CV1.5 x 3C CV1.5 x 3C CV1.5 x 3C
CVV-SB 1.25x2C (12-2) CVV-SB 1.25x2C (12-2) CVV-SB 1.25x2C (12-2)

- 4 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Notes:-
1. Capacities are based on the following conditions:
Cooling • Indoor temp. 27°C[80.6°F]DB/ 19°C[66.2°F]WB
• Outdoor temp. 35°C[95°F]DB/ 24°C[75.2°F]WB
• Interconnecting Piping Length 7.5m(24.6ft)
• Level Difference of Zero
Heating • Indoor temp. 20°C[68°F]DB/ 15°C[59°F]WB
• Outdoor temp. 7°C[44.6°F]DB/ 6°C[42.8°F]WB
• Interconnecting Piping Length 7.5m(24.6ft)
• Level Difference of Zero
2. Capacities are net capacities
3. Due to our policy of innovation some specifications may be changed without prior notification
4. To be added for more available Models
5. EEV : Electronic Expansion Valve
6. Noise Level is Standard Mode
(for actual High Mode(factory set) condition, Noise Level may exceed the standard level by 1.5dBA)
Conversion Formula
kcal/h= kW x 860
Btu/h = kW x 3412
cfm = m3/min x 35.3
l/s = CMM x 1000/60
Type
Model Unit
kW
Cooling Capacity kcal/h
Btu/h
kW
Heating Capacity kcal/h
Btu/h
Casing
Dimensions(WxDxH)
Body mm
inch
Coil
Rows x Columns x FPI
Face Area m2(ft2)
Type
Motor Output x Number W
Running Current A
Air Flow Rate(H/M/L) cmm
(High Mode-factory set)
cfm
Fan External Static Pressure mmAq (in.Aq)
Air Flow Rate(H/M/L) cmm
(Standard Mode) cfm
External Static Pressure mmAq (in.Aq)
Drive
Motor type
Temperature Control
Sound Absorbing Thermal Insulation Material
Air Filter
Safety Device
Liquid Side mm(inch)
Pipe Connections Gas Side mm(inch)
Drain Pipe(Internal Dia.) mm(inch)
Net Weight kg(lbs)
Noise Level
(Sound Press, 1.5m(4.9ft) H/M/L) dB(A)±3
Power Supply Ø, V, Hz
Refrigerant Control
Power cable mm2
Transmission Cable (AWG#-C) mm2
ARNU363BGA2
10.6
9,100
36,200
11.9
10,200
40,600
Galvanized Steel Plate
1,182x450x298
46.5x17.7x10.2
3x12x21
0.26(2.82)
Sirocco Fan
390
2.30
32.3/29/25.3
1,141/1,024/894
10(0.39)
28.4/25.3/21.8
1,003/894/770
8(0.31)
Direct
BLDC
Microprocessor, Thermostat for cooling and heating
Foamed polystrene
-
Fuse
Ø9.52(3/8)
Ø15.88(5/8)
25.0(1)
38(83.8)
46/44/42
1,208/230,60
EEV
CV1.5 x 3C
CVV-SB 1.25x2C (12-2)
ARNU423BGA2 ARNU483BRA2
12.3 14.1
10,600 12,100
42,000 48,100
13.8 15.9
11,000 13,200
43,800 51,200
Galvanized Steel Plate Galvanized Steel Plate
1,182x450x298 1,230x590x380
46.5x17.7x10.2 48.4x23.2x15
3x12x21 3x13x19
0.26(2.82) 0.38(4.12)
Sirocco Fan Sirocco Fan
390 390
2.30 2.40
34.5/32.3/30.7 44.8/40.6/33.3
1,218/1,141/1,084 1,582/1,434/1,176
10(0.39) 14(0.55)
32/28.4/27.2 44.4/39.5/33.5
1,130/1,003/961 1,568/1,395/1,183
8(0.31) 10(0.39)
Direct Direct
BLDC BLDC
Microprocessor, Thermostat for cooling and heating Microprocessor, Thermostat for cooling and heating
Foamed polystrene Foamed polystrene
--
Fuse Fuse
Ø9.52(3/8) Ø9.52(3/8)
Ø15.88(5/8) Ø15.88(5/8)
25.0(1) 25.0(1)
38(83.8) 53(117)
48/46/45 45/43/41
1,208/230,60 1,208/230,60
EEV EEV
CV1.5 x 3C CV1.5 x 3C
CVV-SB 1.25x2C (12-2) CVV-SB 1.25x2C (12-2)
Ceiling Concealed Duct(High Static)

- 5 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
2. List of Functions
Air supply outlet
Airflow direction control(left & right)
Airflow direction control(up & down)
Auto swing(left & right)
Air flow Auto swing(up & down)
Airflow steps(fan/cool/heat)
Chaos swing
Chaos wind(auto wind)
Jet cool(Power wind)
Swirl wind
Deodorizing filter
Air purifying Plasma air purifier
Prefilter(washable / anti-fungus)
Drain pump
Installation E.S.P. control
Electric heater(operation)
High ceiling operation
Hot start
Reliability Self diagnosis
Soft dry operation
Auto changeover
Auto cleaning
Auto operation(artificial intelligence)
Auto restart operation
Child lock
Convenience Forced operation
Group control
Sleep mode
Timer(on/off)
Timer(weekly)
Two thermistor control
Standard wired remote controller
Wide Character wired remote controller
Picto wired remote controller
Individual Deluxe wired remote controller
control Simple wired remote controller
Wired remote controller(for hotel use)
Wireless remote controller(simple)
Wireless LCD remote control
Special Zone control
function kit CTIE
Electro thermostat
1
-
-
-
-
3/3/3
-
-
-
-
X
X
O
O
O
X
-
O
O
O
O(only heat recovery)
X
O(only heat pump or cooling only)
O
O
-
O
X
O
O
O
Accessory
Accessory
Accessory
Accessory
Accessory
X
Accessory
Accessory
-
-
Function
Category
ARNU073BHA2
ARNU093BHA2
ARNU123BHA2
ARNU153BHA2
ARNU183BHA2
ARNU243BHA2
ARNU283BGA2
ARNU363BGA2
ARNU423BGA2
ARNU483BRA2
O : Applied X : Not applied – : No relation
Option : Model name & price are different according to options, and assembled in factory with main unit.
Accessory : Installed at field, ordered and purchased separately by the corresponding model name, supplied with separate
package.

- 6 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
3. Piping Diagrams
Heat Exchanger
Sirocco Fan
Th3
Th1
Th2
lndoor unit
EEV :Heating
:Cooling
Filter
Filter
Refrigerant pipe connection port diameter
MODEL GAS LIQUID
ARNU073BHA2 Ø12.7(1/2) Ø6.35(1/4)
ARNU093BHA2 Ø12.7(1/2) Ø6.35(1/4)
ARNU123BHA2 Ø12.7(1/2) Ø6.35(1/4)
ARNU153BHA2 Ø12.7(1/2) Ø6.35(1/4)
ARNU183BHA2 Ø12.7(1/2) Ø6.35(1/4)
ARNU243BHA2 Ø15.88(5/8) Ø9.52(3/8)
ARNU283BGA2 Ø15.88(5/8) Ø9.52(3/8)
ARNU363BGA2 Ø15.88(5/8) Ø9.52(3/8)
ARNU423BGA2 Ø15.88(5/8) Ø9.52(3/8)
ARNU483BRA2 Ø15.88(5/8) Ø9.52(3/8)
[unit: mm(inch)]
LOC. Description
Th1 Room thermistor
Th2 Pipe in thermistor
Th3 Pipe out thermistor

- 7 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
4. Wiring Diagrams
BH Chassis
CN_COM
CN_ROOM
CN_PIPE/IN
CN_PIPE/OUT
CN_REMO CN_D/PUMP
CN_POWER
CN_MOTOR1 CN_MOTOR2
CN_DISP
CN_OPTION CN_EEV CN_ZONE CN-FLOAT
CN_CC
Dip Switch Setting ON OFF Remarks
SW3 GROUP Master Slave Group Control setting using Wired Remote Controller
SW4 DRY CONTACT Variable Auto Dry contact mode setting
1. Duct model
-. OFF : Default(not operate continuosly )
-. ON : Fan operate continuosly
SW5 EXTRA 1 OFF ON 2. Cassette Model : No Function
3. Ceiling Suspended Model
-. OFF : Ceiling(default)
-. ON : Floor
CAUTION
For Multi V Model, Dip Switch 1,2,5,6,7,8 must be set OFF
That dip switch is used for the other model.

- 8 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
CN_COM
CN_ROOM
CN_PIPE/IN
CN_PIPE/OUT
CN_REMO CN_D/PUMP
CN_POWER
CN_MOTOR1 CN_MOTOR2
CN_DISP
CN_OPTION CN_EEV CN_ZONE CN-FLOAT
CN_CC
BG/BR Chassis
Dip Switch Setting ON OFF Remarks
SW3 GROUP Master Slave Group Control setting using Wired Remote Controller
SW4 DRY CONTACT Variable Auto Dry contact mode setting
1. Duct model
-. OFF : Default(not operate continuosly )
-. ON : Fan operate continuosly
SW5 EXTRA 1 OFF ON 2. Cassette Model : No Function
3. Ceiling Suspended Model
-. OFF : Ceiling(default)
-. ON : Floor
CAUTION
For Multi V Model, Dip Switch 1,2,5,6,7,8 must be set OFF
That dip switch is used for the other model.

- 9 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
5. Exploded View
BH
359012
354210
352115
152302
352118
330870
268711C
249951
W6640
336610B
567480C
567480A
336610A
137213A
158591
567480B
348601
346810
349600
137214
147901
W3001
137213B
W1JK
268711D
W0FZZ
437212B
437212A
W50011
THERMISTOR 3
THERMISTOR 2
THERMISTOR 1
Thermistor 1 567480A Air Housing color : yellow
Thermistor 2 567480B Eva. in Housing color : white
Thermistor 3 567480C Eva. out Housing color : red

- 10 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
BG
359012
354210
55211G
152302
330870
352118
268711C
249951
261704
336610B
567480C
567480A
336610A
437212B
437212A
W0FZZ
158591
567480B
268711E
W6640
268711D
346810
346810
349600
137214
147901
W3001
W50011
137213A
137213B
359012
W1JK
THERMISTOR 2 THERMISTOR 3
THERMISTOR 1
Thermistor 1 567480A Air Housing color : yellow
Thermistor 2 567480B Eva. in Housing color : white
Thermistor 3 567480C Eva. out Housing color : red

- 11 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
352118
349600
W1JK
152302
330870
268711C
268711E
268711D
249951
W0FZZ
567480B
567480A
567480C
346810
359012
336610B336610A
55211G
137214
147901
W3001
354210
W50011
437212B
437212A
261704
W6640
158591
THERMISTOR 1
THERMISTOR 3
THERMISTOR 2
Thermistor 1 567480A Air Housing color : yellow
Thermistor 2 567480B Eva. in Housing color : white
Thermistor 3 567480C Eva. out Housing color : red
BR

P/NO : MFL42947615 MAY, 2008