Haier R410A User Manual

Internal Use Only

http://biz.lgservice.com

System

Indoor Unit R410A

SERVICE MANUAL R410A

MODEL : ARNU Series

URNU Series

CAUTION

Before Servicing the unit, read the safety precautions in General SVC manual. Only for authorized service personnel.

Air Conditioner Service Manual

TABLE OF CONTENTS

Safety Precautions............................................................................................................................	3
Part 1 General Information .............................................................................................................	10
Model Names .............................................................................................................................	11
External Appearance .................................................................................................................	12
Nomenclature .............................................................................................................................	15
Part 2 Indoor Units.......................................................................................................................	7
Ceiling Mounted Cassette Type (1 way).........................................................................................	8
Ceiling Mounted Cassette Type (2 way).......................................................................................	13
Ceiling Mounted Cassette Type (4 way)(1) ..................................................................................	20
Ceiling Mounted Cassette Type (4 way)(2) ..................................................................................	23
Art Cool Type(Mirror)....................................................................................................................	30
Art Cool Type(Gallery) .................................................................................................................	41
Ceiling Concealed Duct Type (Low static)....................................................................................	51
Ceiling Concealed Duct Type (Built in).........................................................................................	57
Ceiling Concealed Duct Type (High static)...................................................................................	63
Wall Mounted Type.......................................................................................................................	72
Ceiling & Floor Ceiling Suspended ..............................................................................................	83
Floor Standing Type .....................................................................................................................	90
Part 3 Trouble shooting guide.................................................................................	97

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 2 -
Only for training and service purposes	LGE Internal Use Only

Part 1

General Information

1. Model Names .............................................		4
2.	External Appearance .................................	5
3.	Nomenclature .............................................	6

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 3 -
Only for training and service purposes	LGE Internal Use Only

Model Names

1. Model Names

Category

Chassis

Capacity(Btu/h(kW))

Name

7k

9k

12k

15k

18k

24k

28k

36k

42k

48k

76k

96k

(2.2)

(2.8)

(3.6)

(4.5)

(5.6)

(7.1)

(8.2)

(10.6)

(12.3)

(14.1)

(22.4)

(28)

Wall Mounted

SE

ARNU07

ARNU09

ARNU12

ARNU15

GSE*2

GSE*2

GSE*2

GSE*2

(General)

S5

ARNU18G

ARNU24G

S5*2

S5*2

SE

ARNU07

ARNU09

ARNU12

ARNU15

Mirror

GSE*2

GSE*2

GSE*2

GSE*2

ART COOL

S3

ARNU18

ARNU24

GS3*2

GS3*2

ART Cool

SF

ARNU07

ARNU09

ARNU12

Gallery

GSF*2

GSF*2

GSF*2

1 Way

TJ

ARNU07

ARNU09

ARNU12

GTJ*2

GTJ*2

GTJ*2

2 Way

TL

ARNU18

ARNU24

GTL*2

GTL*2

Ceiling

TE

ARNU07

ARNU09

ARNU12

ARNU15

ARNU18

GTE*2

GTE*2

GTE*2

GTE*2

GTE*2

Cassette

TP

ARNU24G

ARNU28G

4 Way

TP*2

TP*2

TN

ARNU36

GTN*2

TM

ARNU42G

ARNU48G

TM*2

TM*2

BH

ARNU07

ARNU09

ARNU12

ARNU15

ARNU18

ARNU24

GBHA2

GBHA2

GBHA2

GBHA2

GBHA2

GBHA2

High

BG

ARNU28

ARNU36

ARNU42

GBGA2

GBGA2

GBGA2

Static

BR

ARNU48

GBRA2

Ceiling

B8

URNU76

URNU96

GB8A2

GB8A2

Concealed

B1

ARNU07

ARNU09

ARNU12

ARNU15

Duct

Low Static

GB1G2

GB1G2

GB1G2

GB1G2

B2

ARNU18

ARNU24

GB2G2

GB2G2

B3

ARNU07

ARNU09

ARNU12

ARNU15

Built In

GB3G2

GB3G2

GB3G2

GB3G2

B4

ARNU18

ARNU24

GB4G2

GB4G2

Ceiling & Floor

VE

ARNU09G

ARNU12G

VEA2

VEA2

Ceiling Suspended

VJ

ARNU18

ARNU24

GVJA2

GVJA2

CE

ARNU07

ARNU09

ARNU12

ARNU15

GCEA2

GCEA2

GCEA2

GCEA2

With Case

CF

ARNU18

ARNU24

Floor

GCFA2

GCFA2

Standing

CE

ARNU07

ARNU09

ARNU12

ARNU15

Without

GCEU2

GCEU2

GCEU2

GCEU2

Case

CF

ARNU18

ARNU24

GCFU2

GCFU2

*ART COOL- B: Blue, M:Metal, D:Wood, R:Mirror, W:White Wood, V:Silver, E:Red, G:Gold, 1: Kiss (Photo changeable) *Wall Mounted- A: Basic, L:Plasma

*Ceiling Cassette- A: Basic, C:Plasma

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 4 -
Only for training and service purposes	LGE Internal Use Only

External Appearance

2. External Appearance

	Ceiling Cassette1Way			Ceiling Cassette -2Way
	ARNU07GTJ*2			ARNU18GTL*2
	ARNU09GTJ*2			ARNU24GTL*2
	ARNU12GTJ*2
		* A:Basic, C:Plasma			* A:Basic, C:Plasma
	Ceiling Cassette4Way			Ceiling Concealed Duct - High Static
	ARNU07GTE*2	ARNU24GTP*2		ARNU07GBHA2	ARNU36GBGA2
	ARNU09GTE*2	ARNU28GTP*2
				ARNU09GBHA2	ARNU42GBGA2
	ARNU12GTE*2	ARNU36GTN*2
				ARNU12GBHA2	ARNU48GBRA2
	ARNU15GTE*2	ARNU42GTM*2
				ARNU15GBHA2	URNU76GB8A2
	ARNU18GTE*2	ARNU48GTM*2
				ARNU18GBHA2	URNU96GB8A2
				ARNU24GBHA2
				ARNU28GBGA2
		* A:Basic, C:Plasma
	Ceiling Concealed Duct - Low Static			Wall Mounted
	ARNU07GB1G2	ARNU15GB1G2		ARNU07GSE*2	ARNU15GSE*2
	ARNU09GB1G2	ARNU18GB2G2		ARNU09GSE*2	ARNU18GS5*2
	ARNU12GB1G2	ARNU24GB2G2		ARNU12GSE*2	ARNU24GS5*2
					* A:Basic, L:Plasma
	Ceiling Concealed Duct – Built-in			ART COOL Gallery
	ARNU07GB3G2	ARNU15GB3G2		ARNU07GSF*2
				ARNU09GSF*2
	ARNU09GB3G2	ARNU18GB4G2
				ARNU12GSF*2
	ARNU12GB3G2	ARNU24GB4G2
				* E:Red		V:Silver
				G:Gold		1: Kiss (Photo changeable)
	ART COOL Mirror			Floor Standing
	ARNU07GSE*2	S3: * B : Blue	SE: * R:Mirror	With case
	ARNU09GSE*2	M : Metal	V:Silver
				ARNU07GCEA2
	ARNU12GSE*2	D : Wood	B : Blue
	ARNU15GSE*2	R : Mirror		ARNU09GCEA2
	ARNU18GS3*2	W : White Wood		ARNU12GCEA2
	ARNU24GS3*2			ARNU15GCEA2
				ARNU18GCFA2
				ARNU24GCFA2
	Ceiling & Floor
	ARNU09GVEA2			Without case
	ARNU12GVEA2
				ARNU07GCEU2
				ARNU09GCEU2
				ARNU12GCEU2
	Ceiling Suspended			ARNU15GCEU2
				ARNU18GCFU2
	ARNU18GVJA2
				ARNU24GCFU2
	ARNU24GVJA2

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 5 -
Only for training and service purposes	LGE Internal Use Only

Nomenclature

3. Nomenclature

ARN U 07 G TJ A 2

Serial Number

Combinations of functions

A:Basic function

L:Neo Plasma(Wall Mounted)

C:Plasma(Ceiling Cassette)

G: Low Static

ART COOL Type Panel Color

B:Blue D:Wood M:Metal R:Mirror W:White Wood

V: Silver E:Red G:Gold 1: Kiss (Photo changeable)

Chassis Name
Electrical Ratings
1:1Ø, 115V, 60Hz	2: 1Ø, 220V, 60Hz
6:1Ø, 220 ~ 240V, 50Hz	7: 1Ø, 100V, 50/60Hz

G:1Ø, 220 ~ 240V, 50Hz / 220V 60Hz

Total Cooling Capacity in Btu/h

EX) 5,000 Btu/h '05' 18,000 Btu/h '18'

Combination of Inverter Type and Cooling Only or Heat Pump

N: AC Inverter and H/P V: AC Inverter and C/O U: DC Inverter and H/P and C/O

System with Indoor Unit using R410A

LGETA:U Ex) URN

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 6 -
Only for training and service purposes	LGE Internal Use Only

Part 2
Indoor Units
Ceiling Cassette
1 Way .................................................................................	8
2 Way ...............................................................................	13
4 Way(1)...........................................................................	20
4 Way(2)...........................................................................	23
Art Cool Series
ART COOL Miror .............................................................	30
ART COOL Gallery ..........................................................	41
Ceiling Concealed Duct
Low Static ........................................................................	51
Built In ..............................................................................	57
High Static........................................................................	63
Wall Mounted(General)
Wall Mounted ...................................................................	72
Ceiling & Floor
Ceiling & Floor
Ceiling Suspended...........................................................	83
Floor Standing
Floor Standing..................................................................	90

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 7 -
Only for training and service purposes	LGE Internal Use Only

Ceiling Mounted Cassette Type (1Way)

1.	Functions ......................................................................................	9
2.	Operation Details........................................................................	10
3.	Dimensions .................................................................................	12

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 8 -
Only for training and service purposes	LGE Internal Use Only

Specification

1. Functions

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 Temperature.

Starting Current Control • Indoor fan is delayed for 5 seconds at the starting.

	Indoor Fan Speed Control	• Jet, High, Med, Low, Lolow

Soft Dry Operation Mode • Intermittent operation of fan at low speed.

Airflow Direction Control • The louver can be set at swing up and down automatically.

	Auto Restart	• Although the air-conditioner is turned off by a power failure, it is restarted auto-
		matically previous operation mode after power supply.
	Deice (defrost) control (Heating)		• Both the indoor and outdoor fan stops during defrosting.
			• Hot start after defrost ends.
				• The indoor fan does not rotate until the evaporator pip-
	Hot-start Control (Heating)
				ing temperature will be reached at 25°C.
				• To install a unit is very convenient because of smaller
	Compact and light design
				size than textile.
				• The most advanced low-noise design.
	Low noise
				• The adoption of turbo fan and round type heat exchang-
				er give the quietest operation.

Long life filter

High head Drain pump

High-Ceiling corresponding Function

•Long life wrinkle(type) and washable and anti-bacteria filter is adopted.

•Built-in drain pump automatically drains water.

•A standard drain-head height of up to 700mm is possible.

•According to the height of ceiling, the RPM of indoor fan motor is selected to increase air reaching distance.

	Central Control(Optional)	• It is operating individually or totally by central control function.

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 9 -
Only for training and service purposes	LGE Internal Use Only

Operation Detail

2. Operation Detail

(1)Thefunctionofmaincontrol

■ Auto Swing Control

• This function is to swing the louver up and down automatically.

■ Soft-Dry Operation

• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of already being set to the best speed for Dry Operation by microcontroller control.

■ Cooling Mode Operation

•When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller and the operation diagram is as following

Intake Air Temperature

Thermo. ON

(SET TEMPERATURE +0.5°C)

Thermo. OFF

(SET TEMPERATURE -0.5°C)

More than

More than

3 minutes

3 minutes

INDOOR FAN

Selected

Low

Selected

Low

Selected

Speed

Speed

Speed

Thermal ON

Thermal OFF

Indoor Unit mode

ST+0.5

ST-0.5

2TH (Remo.+Indoor)

To be selected higher temperature

To be selected higher temperature

contrast Indoor Unit and Remo.

contrast Indoor Unit and Remo.

Remo. Mode

ST+0.5

ST-0.5

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 10 -
Only for training and service purposes	LGE Internal Use Only

Operation Detail

■ Heating Mode Operation

The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.

Indoor pipe Temperature

36(42)°C

33(39)°C
25°C
22(20)°C
Room
Temperature
Thermal Off
Thermal On
					Minimum
					3min
Thermal		ON			OFF	ON
Outdoor fan		ON			OFF	ON
Indoor fan	Stop Low Low	Setting	Low	Setting	Low Stop	Stop Low	Setting
		fan		fan			fan
		speed		speed			speed
4 Way				ON

	Thermal ON	Thermal OFF
Indoor Unit mode	ST+2	ST+4
2TH	To be selected lower temperature	To be selected lower temperature
(Remo.+Indoor)	contrast Indoor Unit and Remo.	contrast Indoor Unit and Remo.
Remo. mode	ST+0	ST+2

■ Hot-start Control

The indoor fan does no rotate until the evaporator piping temperature will be reached to 25°C. The operation diagram is as following.

	Pipe
	temperature
	35 °C
	30 °C
	27 °C
	25 °C
	22 °C		LO
			LOW
	Indoor fan	OFF	LOW	SELECTED	LOW	LOLOW
	speed			FAN
	COMP			ON

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 11 -
Only for training and service purposes	LGE Internal Use Only

Dimensions

3. Dimensions

(unit : mm)

Ceiling Cassette 1-way

ARNU07GTJ*2 ARNU09GTJ*2 ARNU12GTJ*2

Descripition

ø6.35 flare

ø12.7 flare

Unit should be installed in compliance with the installation manual

Unit shall be grounded in accordance with the local regulations or

Name

Liquid pipe connection

Gas pipe connection

Air suction grill

Air discharge grill

in the product box.

applicable national codes.

Number

1

2

3

4

Note

1.

2.

30	36 50	83
56
100
151
173
5.242
1
2

961.2	860		1070	939
		16.4.	110
		131
	16.5	198.8
	19.1

32.8	4.344
	410
	83	138

76, Seongsan-dong, Changwon City, Gyeongnam, CHASSIS CODE: TJ 641-713, Korea www.lgeaircon.com

4

3

480

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 12 -
Only for training and service purposes	LGE Internal Use Only

Ceiling Mounted Cassette Type (2Way)

1.	Functions ....................................................................................	14
2.	Operation Details........................................................................	15
3.	Dimensions .................................................................................	17

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 13 -
Only for training and service purposes	LGE Internal Use Only

Functions

1. Functions

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 Temperature.

Starting Current Control • Indoor fan is delayed for 5 seconds at the starting.

	Indoor Fan Speed Control	• Jet, High, Med, Low, Lolow

Soft Dry Operation Mode • Intermittent operation of fan at low speed.

Airflow Direction Control • The louver can be set at swing up and down automatically.

	Auto Restart	• Although the air-conditioner is turned off by a power failure, it is restarted auto-
		matically previous operation mode after power supply.
	Deice (defrost) control (Heating)		• Both the indoor and outdoor fan stops during defrosting.
			• Hot start after defrost ends.
				• The indoor fan does not rotate until the evaporator pip-
	Hot-start Control (Heating)
				ing temperature will be reached at 25°C.
				• To install a unit is very convenient because of smaller
	Compact and light design
				size than textile.
				• The most advanced low-noise design.
	Low noise
				• The adoption of turbo fan and round type heat exchang-
				er give the quietest operation.

Long life filter

High head Drain pump

High-Ceiling corresponding Function

•Long life wrinkle(type) and washable and anti-bacteria filter is adopted.

•Built-in drain pump automatically drains water.

•A standard drain-head height of up to 700mm is possible.

•According to the height of ceiling, the RPM of indoor fan motor is selected to increase air reaching distance.

	Central Control(Optional)	• It is operating individually or totally by central control function.

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 14 -
Only for training and service purposes	LGE Internal Use Only

Operation Detail

2. Operation Detail

(1)Thefunctionofmaincontrol

■ Auto Swing Control

• This function is to swing the louver up and down automatically.

■ Soft-Dry Operation

• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of already being set to the best speed for Dry Operation by microcontroller control.

■ Cooling Mode Operation

•When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller and the operation diagram is as following

Intake Air Temperature

Thermo. ON

(SET TEMPERATURE +0.5°C)

Thermo. OFF

(SET TEMPERATURE -0.5°C)

More than

More than

3 minutes

3 minutes

INDOOR FAN

Selected

Low

Selected

Low

Selected

Speed

Speed

Speed

Thermal ON

Thermal OFF

Indoor Unit mode

ST+0.5

ST-0.5

2TH (Remo.+Indoor)

To be selected higher temperature

To be selected higher temperature

contrast Indoor Unit and Remo.

contrast Indoor Unit and Remo.

Remo. Mode

ST+0.5

ST-0.5

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 15 -
Only for training and service purposes	LGE Internal Use Only

Operation Detail

■ Heating Mode Operation

The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.

Indoor pipe Temperature

36(42)°C

33(39)°C
25°C
22(20)°C
Room
Temperature
Thermal Off
Thermal On
					Minimum
					3min
Thermal		ON			OFF	ON
Outdoor fan		ON			OFF	ON
Indoor fan	Stop Low Low	Setting	Low	Setting	Low Stop	Stop Low	Setting
		fan		fan			fan
		speed		speed			speed
4 Way				ON

	Thermal ON	Thermal OFF
Indoor Unit mode	ST+2	ST+4
2TH	To be selected lower temperature	To be selected lower temperature
(Remo.+Indoor)	contrast Indoor Unit and Remo.	contrast Indoor Unit and Remo.
Remo. mode	ST+0	ST+2

■ Hot-start Control

The indoor fan does no rotate until the evaporator piping temperature will be reached to 25°C. The operation diagram is as following.

	Pipe
	temperature
	35 °C
	30 °C
	27 °C
	25 °C
	22 °C		LO
			LOW
	Indoor fan	OFF	LOW	SELECTED	LOW	LOLOW
	speed			FAN
	COMP			ON

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 16 -
Only for training and service purposes	LGE Internal Use Only

and training for Only	LG ©2008 Copyright
purposes service	All .Inc .Electronics
	.reserved right

- 17 -

Only Use Internal LGE

4

3

Ceiling Cassette 2-way

ARNU18GTL*2

ARNU24GTL*2

	A
830	B

47.9

(unit : mm)

		Number	Name	Descripition
275		1	Liquid pipe connection	(18k) ø6.35, (24k)ø9.52
2		2	Gas pipe connection	(18k) ø12.7, (24k)ø15.88
550
		3	Air suction grill
69.5
1		4	Air discharge grill
		Note
889.2		1. Unit should be installed in compliance with the installation manual
		in the product box.
	TL	2. Unit shall be grounded in accordance with the local regulations or
A	225	applicable national codes.
B	126.5

1050

28.5

640

76, Seongsan-dong, Changwon City, Gyeongnam,	CHASSIS CODE: TL
641-713, Korea
www.lgeaircon.com

Dimensions .3

Dimensions

Ceiling Mounted Cassette Type (4Way) (1)

1.	Functions ....................................................................................	19
2.	Operation Details........................................................................	20
3.	Dimensions .................................................................................	22

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 18 -
Only for training and service purposes	LGE Internal Use Only

Functions

1. Functions

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 Temperature.

Starting Current Control • Indoor fan is delayed for 5 seconds at the starting.

	Indoor Fan Speed Control	• Jet, High, Med, Low, Lolow

Soft Dry Operation Mode • Intermittent operation of fan at low speed.

Airflow Direction Control • The louver can be set at swing up and down automatically.

	Auto Restart	• Although the air-conditioner is turned off by a power failure, it is restarted auto-
		matically previous operation mode after power supply.
	Deice (defrost) control (Heating)		• Both the indoor and outdoor fan stops during defrosting.
			• Hot start after defrost ends.
				• The indoor fan does not rotate until the evaporator pip-
	Hot-start Control (Heating)
				ing temperature will be reached at 25°C.
				• To install a unit is very convenient because of smaller
	Compact and light design
				size than textile.
				• The most advanced low-noise design.
	Low noise
				• The adoption of turbo fan and round type heat exchang-
				er give the quietest operation.

Long life filter

High head Drain pump

High-Ceiling corresponding Function

•Long life wrinkle(type) and washable and anti-bacteria filter is adopted.

•Built-in drain pump automatically drains water.

•A standard drain-head height of up to 700mm is possible.

•According to the height of ceiling, the RPM of indoor fan motor is selected to increase air reaching distance.

	Central Control(Optional)	• It is operating individually or totally by central control function.
	Swirl Swing Control	• It is operating swirl swing

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 19 -
Only for training and service purposes	LGE Internal Use Only

Operation Detail

2. Operation Detail

(1)Thefunctionofmaincontrol

■ Auto Swing Control

• This function is to swing the louver up and down automatically.

■ Soft-Dry Operation

• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of already being set to the best speed for Dry Operation by microcontroller control.

■ Cooling Mode Operation

•When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller and the operation diagram is as following

Intake Air Temperature

Thermo. ON

(SET TEMPERATURE +0.5°C)

Thermo. OFF

(SET TEMPERATURE -0.5°C)

More than

More than

3 minutes

3 minutes

INDOOR FAN

Selected

Low

Selected

Low

Selected

Speed

Speed

Speed

Thermal ON

Thermal OFF

Indoor Unit mode

ST+0.5

ST-0.5

2TH (Remo.+Indoor)

To be selected higher temperature

To be selected higher temperature

contrast Indoor Unit and Remo.

contrast Indoor Unit and Remo.

Remo. Mode

ST+0.5

ST-0.5

■ Swirl Swing Control						Vane 2
Vane 2,	4 is almost vane closed while vane1, 3 is opened.
Vane 1,	3 and vane 2,4 turn over minutely
	Vane 1								Vane 3

	Vane 4
Copyright ©2008 LG Electronics. Inc. All right reserved.	- 20 -
Only for training and service purposes	LGE Internal Use Only

Operation Detail

■ Heating Mode Operation

The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.

Indoor pipe Temperature

36(42)°C

33(39)°C
25°C
22(20)°C
Room
Temperature
Thermal Off
Thermal On
					Minimum
					3min
Thermal		ON			OFF	ON
Outdoor fan		ON			OFF	ON
Indoor fan	Stop Low Low	Setting	Low	Setting	Low Stop	Stop Low	Setting
		fan		fan			fan
		speed		speed			speed
4 Way				ON

	Thermal ON	Thermal OFF
Indoor Unit mode	ST+2	ST+4
2TH	To be selected lower temperature	To be selected lower temperature
(Remo.+Indoor)	contrast Indoor Unit and Remo.	contrast Indoor Unit and Remo.
Remo. mode	ST+0	ST+2

■ Hot-start Control

The indoor fan does no rotate until the evaporator piping temperature will be reached to 25°C. The operation diagram is as following.

	Pipe
	temperature
	35 °C
	30 °C
	27 °C
	25 °C
	22 °C		LO
			LOW
	Indoor fan	OFF	LOW	SELECTED	LOW	LOLOW
	speed			FAN
	COMP			ON

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 21 -
Only for training and service purposes	LGE Internal Use Only

and training for Only	LG ©2008 Copyright
purposes service	All .Inc .Electronics
	.reserved right

- 22 -

Only Use Internal LGE

269

670

670

670		570
		450
	5
670	570	521
	6

Ceiling Cassette 4-way

ARNU07GTE*2

ARNU09GTE*2

ARNU12GTE*2

ARNU15GTE*2

ARNU18GTE*2

(unit : mm)

Number	Name	Descripition
1	Liquid pipe connection	Unit size(7k, 9k, 12k, 18k):ø6.35
2	Gas pipe connection	Unit size(7k, 9k, 12k, 18k):ø12.7
3	Drain pipe connection
4	Power supply connection
5	Air discharge grill
6	Air suction grill

Note

1.Unit should be installed in compliance with the installation manual in the product box.

2.Unit shall be grounded in accordance with the local regulations or applicable national codes.

		4	40
		30		1	2
			110	110
30	269	.4	90	90
		120
			3

	76, Seongsan-dong, Changwon City, Gyeongnam,	CHASSIS CODE: TE
	641-713, Korea
	www.lgeaircon.com

		Dimensions
.3
Dimensions

Ceiling Mounted Cassette Type (4Way) (2)

1.	Functions ....................................................................................	24
2.	Operation Details........................................................................	25
3.	Dimensions .................................................................................	27

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 23 -
Only for training and service purposes	LGE Internal Use Only

Functions

1. Functions

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 Temperature.

Starting Current Control • Indoor fan is delayed for 5 seconds at the starting.

	Indoor Fan Speed Control	• Jet, High, Med, Low, Lolow

Soft Dry Operation Mode • Intermittent operation of fan at low speed.

Airflow Direction Control • The louver can be set at swing up and down automatically.

	Auto Restart	• Although the air-conditioner is turned off by a power failure, it is restarted auto-
		matically previous operation mode after power supply.
	Deice (defrost) control (Heating)		• Both the indoor and outdoor fan stops during defrosting.
			• Hot start after defrost ends.
				• The indoor fan does not rotate until the evaporator pip-
	Hot-start Control (Heating)
				ing temperature will be reached at 25°C.
				• To install a unit is very convenient because of smaller
	Compact and light design
				size than textile.
				• The most advanced low-noise design.
	Low noise
				• The adoption of turbo fan and round type heat exchang-
				er give the quietest operation.

Long life filter

High head Drain pump

High-Ceiling corresponding Function

•Long life wrinkle(type) and washable and anti-bacteria filter is adopted.

•Built-in drain pump automatically drains water.

•A standard drain-head height of up to 700mm is possible.

•According to the height of ceiling, the RPM of indoor fan motor is selected to increase air reaching distance.

	Central Control(Optional)	• It is operating individually or totally by central control function.
	Swirl Swing Control	• It is operating swirl swing

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 24 -
Only for training and service purposes	LGE Internal Use Only

Operation Detail

2. Operation Detail

(1)Thefunctionofmaincontrol

■ Auto Swing Control

• This function is to swing the louver up and down automatically.

■ Soft-Dry Operation

• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of already being set to the best speed for Dry Operation by microcontroller control.

■ Cooling Mode Operation

•When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller and the operation diagram is as following

Intake Air Temperature

Thermo. ON

(SET TEMPERATURE +0.5°C)

Thermo. OFF

(SET TEMPERATURE -0.5°C)

More than

More than

3 minutes

3 minutes

INDOOR FAN

Selected

Low

Selected

Low

Selected

Speed

Speed

Speed

Thermal ON

Thermal OFF

Indoor Unit mode

ST+0.5

ST-0.5

2TH (Remo.+Indoor)

To be selected higher temperature

To be selected higher temperature

contrast Indoor Unit and Remo.

contrast Indoor Unit and Remo.

Remo. Mode

ST+0.5

ST-0.5

■ Swirl Swing Control						Vane 2
Vane 2,	4 is almost vane closed while vane1, 3 is opened.
Vane 1,	3 and vane 2,4 turn over minutely
	Vane 1								Vane 3

	Vane 4
Copyright ©2008 LG Electronics. Inc. All right reserved.	- 25 -
Only for training and service purposes	LGE Internal Use Only

Operation Detail

■ Heating Mode Operation

The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.

Indoor pipe Temperature

36(42)°C

33(39)°C
25°C
22(20)°C
Room
Temperature
Thermal Off
Thermal On
					Minimum
					3min
Thermal		ON			OFF	ON
Outdoor fan		ON			OFF	ON
Indoor fan	Stop Low Low	Setting	Low	Setting	Low Stop	Stop Low	Setting
		fan		fan			fan
		speed		speed			speed
4 Way				ON

	Thermal ON	Thermal OFF
Indoor Unit mode	ST+2	ST+4
2TH	To be selected lower temperature	To be selected lower temperature
(Remo.+Indoor)	contrast Indoor Unit and Remo.	contrast Indoor Unit and Remo.
Remo. mode	ST+0	ST+2

■ Hot-start Control

The indoor fan does no rotate until the evaporator piping temperature will be reached to 25°C. The operation diagram is as following.

	Pipe
	temperature
	35 °C
	30 °C
	27 °C
	25 °C
	22 °C		LO
			LOW
	Indoor fan	OFF	LOW	SELECTED	LOW	LOLOW
	speed			FAN
	COMP			ON

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 26 -
Only for training and service purposes	LGE Internal Use Only

3. Dimensions

Ceiling Cassette 4-way	ARNU24GTP*2 ARNU28GTP*2	(unit : mm)	Name Descripition	Liquid pipe connection Unit size(24k, 28k):ø9.52	Gas pipe connection Unit size(24k, 28k):ø15.88	Drain pipe connection	Power supply connection	Air discharge grill	Air suction grill
			Number	1	2	3	4	5	6
	R35
	126	62
	A direction View					840
		A				684

804

787

154 204

	671
	950
	618
R20	500(Airoutlethole)
-
4

618

292

			installation manual	local regulations or
Note			Unit should be installed in compliance with the in the product box.	Unit shall be grounded in accordance with the applicable national codes.
			1.	2.

4	3
	204
	99
	82
	60
	80

787	840	840
		1
		60
		108
		40 65
		2
		6
		25
		5
outlet hole)	734 950
500(Air
	54

Dimensions

76, Seongsan-dong, Changwon City, Gyeongnam, CHASSIS CODE: TP 641-713, Korea www.lgeaircon.com

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 27 -
Only for training and service purposes	LGE Internal Use Only

and training for Only	LG ©2008 Copyright
purposes service	All .Inc .Electronics
	.reserved right

- 28 -

Only Use Internal LGE

246

195

6

5

2

840

A

View direction A

126	R35
62

Ceiling Cassette 4-way

ARNU36GTN*2

		(unit : mm)
Number	Name	Descripition
1	Liquid pipe connection	Unit size(36k):ø9.52
2	Gas pipe connection	Unit size(36k):ø15.88
3	Drain pipe connection
4	Power supply connection
5	Air discharge grill
6	Air suction grill

4

Note

1. Unit should be installed in compliance with the installation manual in the product box.

2. Unit shall be grounded in accordance with the local regulations or applicable national codes.

3

1

76, Seongsan-dong, Changwon City, Gyeongnam,	CHASSIS CODE: TN
641-713, Korea
www.lgeaircon.com

Dimensions

and training for Only	LG ©2008 Copyright
purposes service	All .Inc .Electronics
	.reserved right

- 29 -

Only Use Internal LGE

288	237

6

5

2

840

1

A
Viewdirection	126	R3
		5
		109

A

Ceiling Cassette 4-way

ARNU42GTM*2

ARNU48GTM*2

4

3

		(unit : mm)
Number	Name	Descripition
1	Liquid pipe connection	Unit size(42k):ø9.52
2	Gas pipe connection	Unit size(48k):ø15.88
3	Drain pipe connection
4	Power supply connection
5	Air discharge grill
6	Air suction grill

Note

1.Unit should be installed in compliance with the installation manual in the product box.

2.Unit shall be grounded in accordance with the local regulations or applicable national codes.

76, Seongsan-dong, Changwon City, Gyeongnam,	CHASSIS CODE: TM
641-713, Korea
www.lgeaircon.com

Dimensions

Art Cool Type(Mirror)

1.	Functions ....................................................................................	31
2.	Operation Details........................................................................	32
3.	Dimensions .................................................................................	39

Copyright ©2008 LG Electronics. Inc. All right reserved.	- 30 -
Only for training and service purposes	LGE Internal Use Only