system indoor unit r410a service manual...
TRANSCRIPT
SystemIndoor Unit SERVICE MANUAL R410AMODEL : ARNU Series URNU Series
CAUTIONBefore Servicing the unit, read the safety precautions in General SVC manual.Only for authorized service personnel.
Internal Use Only
http://biz.lgservice.com
R410A
- 2 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
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.......................................................................................................................7Ceiling Mounted Cassette Type (1 way).........................................................................................8Ceiling Mounted Cassette Type (2 way).......................................................................................13Ceiling Mounted Cassette Type (4 way)(1) ..................................................................................20Ceiling Mounted Cassette Type (4 way)(2) ..................................................................................23Art Cool Type(Mirror)....................................................................................................................30Art Cool Type(Gallery) .................................................................................................................41Ceiling Concealed Duct Type (Low static)....................................................................................51Ceiling Concealed Duct Type (Built in).........................................................................................57Ceiling Concealed Duct Type (High static)...................................................................................63Wall Mounted Type.......................................................................................................................72Ceiling & Floor Ceiling Suspended ..............................................................................................83Floor Standing Type .....................................................................................................................90
Part 3 Trouble shooting guide .................................................................................97
- 3 -Copyright ©2008 LG Electronics. Inc. All right reserved.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
Model Names
- 4 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. Model Names
SEWall Mounted(General) S5
SEMirror
S3
SF
1 Way TJ
2 Way TL
TE
4 Way TP
TN
TM
BH
BGHigh Static BR
B8
B1Low Static
B2
B3
B4
Ceiling & Floor VE
Ceiling Suspended VJ
CEWith Case
CF
CE
CF
Capacity(Btu/h(kW))Category Chassis
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)
Ceiling Concealed
Duct
Built In
ART CoolGallery
FloorStanding
WithoutCase
Ceiling
Cassette
ART COOL
*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
ARNU07GSE*2
ARNU09GSE*2
ARNU12GSE*2
ARNU15GSE*2
ARNU07GTJ*2
ARNU09GTJ*2
ARNU12GTJ*2
ARNU18GTL*2
ARNU24GTL*2
ARNU07GTE*2
ARNU09GTE*2
ARNU12GTE*2
ARNU15GTE*2
ARNU18GTE*2
ARNU24GTP*2
ARNU28GTP*2
ARNU07GBHA2
ARNU09GBHA2
ARNU12GBHA2
ARNU15GBHA2
ARNU18GBHA2
ARNU24GBHA2
ARNU07GB1G2
ARNU09GB1G2
ARNU12GB1G2
ARNU15GB1G2
ARNU07GB3G2
ARNU09GB3G2
ARNU12GB3G2
ARNU15GB3G2
ARNU07GCEA2
ARNU09GCEA2
ARNU12GCEA2
ARNU15GCEA2
ARNU07GCEU2
ARNU09GCEU2
ARNU12GCEU2
ARNU15GCEU2
ARNU09GVEA2
ARNU12GVEA2
ARNU18GVJA2
ARNU24GVJA2
ARNU18GCFA2
ARNU24GCFA2
ARNU18GCFU2
ARNU24GCFU2
ARNU28GBGA2
ARNU36GBGA2
ARNU42GBGA2
ARNU36GTN*2
ARNU48GBRA2
ARNU42GTM*2
ARNU48GTM*2
URNU76GB8A2
URNU96GB8A2
ARNU18GB2G2
ARNU24GB2G2
ARNU18GB4G2
ARNU24GB4G2
ARNU07GSE*2
ARNU09GSE*2
ARNU12GSE*2
ARNU15GSE*2
ARNU07GSF*2
ARNU09GSF*2
ARNU12GSF*2
ARNU18GS5*2
ARNU24GS5*2
ARNU18GS3*2
ARNU24GS3*2
External Appearance
- 5 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
2. External Appearance
Wall Mounted
ART COOL Mirror
Ceiling Cassette- 1Way
Ceiling Cassette- 4Way
Ceiling & Floor
Ceiling Suspended
ARNU07GTJ*2 ARNU09GTJ*2ARNU12GTJ*2
Ceiling Cassette -2WayARNU18GTL*2ARNU24GTL*2
ARNU07GTE*2ARNU09GTE*2ARNU12GTE*2ARNU15GTE*2ARNU18GTE*2
ARNU24GTP*2 ARNU28GTP*2ARNU36GTN*2ARNU42GTM*2ARNU48GTM*2
Ceiling Concealed Duct - Low StaticARNU07GB1G2 ARNU09GB1G2ARNU12GB1G2
ARNU15GB1G2ARNU18GB2G2ARNU24GB2G2
ARNU07GSE*2 ARNU09GSE*2ARNU12GSE*2
ARNU15GSE*2ARNU18GS5*2 ARNU24GS5*2
ARNU07GSE*2 ARNU09GSE*2ARNU12GSE*2 ARNU15GSE*2ARNU18GS3*2ARNU24GS3*2
ARNU09GVEA2ARNU12GVEA2
ARNU18GVJA2ARNU24GVJA2
Floor Standing With caseARNU07GCEA2ARNU09GCEA2ARNU12GCEA2ARNU15GCEA2ARNU18GCFA2ARNU24GCFA2
Without caseARNU07GCEU2ARNU09GCEU2ARNU12GCEU2ARNU15GCEU2ARNU18GCFU2ARNU24GCFU2
Ceiling Concealed Duct - High StaticARNU07GBHA2ARNU09GBHA2ARNU12GBHA2ARNU15GBHA2ARNU18GBHA2ARNU24GBHA2ARNU28GBGA2
ARNU36GBGA2ARNU42GBGA2ARNU48GBRA2URNU76GB8A2URNU96GB8A2
Ceiling Concealed Duct – Built-inARNU07GB3G2 ARNU09GB3G2ARNU12GB3G2
ARNU15GB3G2ARNU18GB4G2ARNU24GB4G2
* A:Basic, L:Plasma
ART COOL GalleryARNU07GSF*2 ARNU09GSF*2ARNU12GSF*2
* E:Red V:Silver G:Gold 1: Kiss (Photo changeable)
* A:Basic, C:Plasma
* A:Basic, C:Plasma * A:Basic, C:Plasma
S3: * B : BlueM : Metal D : WoodR : MirrorW : White Wood
SE: * R:MirrorV:SilverB : Blue
Nomenclature
- 6 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
3. Nomenclature
ARN U G07 ATJ 2
Serial Number
Chassis Name
Electrical Ratings
1:1Ø, 115V, 60Hz 2: 1Ø, 220V, 60Hz6:1Ø, 220 ~ 240V, 50Hz 7: 1Ø, 100V, 50/60HzG: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 PumpN: AC Inverter and H/P V: AC Inverter and C/OU: DC Inverter and H/P and C/O
System with Indoor Unit using R410A
LGETA:U Ex) URN
Combinations of functionsA:Basic function L:Neo Plasma(Wall Mounted)C:Plasma(Ceiling Cassette) G: Low Static ART COOL Type Panel ColorB:Blue D:Wood M:Metal R:Mirror W:White Wood V: Silver E:Red G:Gold 1: Kiss (Photo changeable)
- 7 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Part 2 Indoor Units
Ceiling Cassette1 Way .................................................................................82 Way ...............................................................................134 Way(1)...........................................................................204 Way(2)...........................................................................23
Art Cool SeriesART COOL Miror .............................................................30ART COOL Gallery ..........................................................41
Ceiling Concealed DuctLow Static ........................................................................51Built In ..............................................................................57High Static........................................................................63
Wall Mounted(General)Wall Mounted ...................................................................72
Ceiling & FloorCeiling & Floor Ceiling Suspended...........................................................83
Floor StandingFloor Standing..................................................................90
- 8 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. Functions ......................................................................................9
2. Operation Details........................................................................10
3. Dimensions .................................................................................12
Ceiling Mounted Cassette Type (1Way)
- 9 -Copyright ©2008 LG Electronics. Inc. All right reserved.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 control
Starting Current Control
Indoor Fan Speed Control
Soft Dry Operation Mode
Airflow Direction Control
Deice (defrost) control (Heating)
Auto Restart
Hot-start Control (Heating) • The indoor fan does not rotate until the evaporator pip-ing temperature will be reached at 25°C.
Compact and light design • To install a unit is very convenient because of smallersize than textile.
Low noise• The most advanced low-noise design.• The adoption of turbo fan and round type heat exchang-
er give the quietest operation.
Long life filter • Long life wrinkle(type) and washable and anti-bacteriafilter is adopted.
High head Drain pump • Built-in drain pump automatically drains water.• A standard drain-head height of up to 700mm is possible.
High-Ceiling corresponding Function • According to the height of ceiling, the RPM of indoor fanmotor is selected to increase air reaching distance.
Central Control(Optional) • It is operating individually or totally by central control function.
• Room temperature sensor. (Thermistor)
• Maintains the room temperature in accordance with the Setting Temperature.
• Indoor fan is delayed for 5 seconds at the starting.
• Jet, High, Med, Low, Lolow
• Intermittent operation of fan at low speed.
• The louver can be set at swing up and down automatically.
• Although the air-conditioner is turned off by a power failure, it is restarted auto-matically previous operation mode after power supply.
• Both the indoor and outdoor fan stops during defrosting.• Hot start after defrost ends.
- 10 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
2. Operation Detail
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 con-
troller and the operation diagram is as following
(1) The function of main control
Operation Detail
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
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
Selected Selected SelectedSpeed Speed Speed
INDOOR FAN Low Low
- 11 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Heating Mode OperationThe unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
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.
25 °C
27 °C
35 °C30 °C
22 °C
Pipetemperature
OFFIndoor fan
speed
LOLOW
LOW SELECTEDFAN
LOW LOLOW
COMP ON
Operation Detail
Thermal OFF ON
OFF ON
ON
ONOutdoor fan
Indoor fan
4 Way ON
Room
Temperature
Thermal Off
Thermal On
Indoor pipeTemperature
33(39)°C
25°C22(20)°C
36(42)°C
Minimum
3min
Settingfan
speed
Settingfan
speed
Settingfan
speedStop Low Stop StopLow LowLow Low
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
- 12 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
3. Dimensions
Dimensions
4
2
1
3
860
32.8
410344.4
961.
216
.519
.1
50
83
3630
242.5
173151
10056
8313
8
131
11016.4.19
8.8
480
939
1070
76, S
eong
san-
dong
, Cha
ngw
on C
ity, G
yeon
gnam
,64
1-71
3, K
orea
ww
w.lg
eairc
on.c
om
CH
AS
SIS
CO
DE
: TJ
Cei
ling
Cas
sette
1-w
ay
AR
NU
07G
TJ*2
A
RN
U09
GTJ
*2A
RN
U12
GTJ
*2
Nam
e
1Li
quid
pip
e co
nnec
tion
ø6.
35 fl
are
2G
as p
ipe
conn
ectio
nø
12.7
flar
e
3A
ir su
ctio
n gr
ill
4A
ir di
scha
rge
grill
Num
ber
Des
crip
ition
Not
e
1. U
nit s
houl
d be
inst
alle
d in
com
plia
nce
with
the
inst
alla
tion
man
ual
in
the
prod
uct b
ox.
2. U
nit s
hall
be g
roun
ded
in a
ccor
danc
e w
ith th
e lo
cal r
egul
atio
ns o
r
app
licab
le n
atio
nal c
odes
.
(uni
t : m
m)
- 13 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. Functions ....................................................................................14
2. Operation Details........................................................................15
3. Dimensions .................................................................................17
Ceiling Mounted Cassette Type (2Way)
- 14 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. Functions
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Indoor Fan Speed Control
Soft Dry Operation Mode
Airflow Direction Control
Deice (defrost) control (Heating)
Auto Restart
Hot-start Control (Heating) • The indoor fan does not rotate until the evaporator pip-ing temperature will be reached at 25°C.
Compact and light design • To install a unit is very convenient because of smallersize than textile.
Low noise• The most advanced low-noise design.• The adoption of turbo fan and round type heat exchang-
er give the quietest operation.
Long life filter • Long life wrinkle(type) and washable and anti-bacteriafilter is adopted.
High head Drain pump • Built-in drain pump automatically drains water.• A standard drain-head height of up to 700mm is possible.
High-Ceiling corresponding Function • According to the height of ceiling, the RPM of indoor fanmotor is selected to increase air reaching distance.
Central Control(Optional) • It is operating individually or totally by central control function.
• Room temperature sensor. (Thermistor)
• Maintains the room temperature in accordance with the Setting Temperature.
• Indoor fan is delayed for 5 seconds at the starting.
• Jet, High, Med, Low, Lolow
• Intermittent operation of fan at low speed.
• The louver can be set at swing up and down automatically.
• Although the air-conditioner is turned off by a power failure, it is restarted auto-matically previous operation mode after power supply.
• Both the indoor and outdoor fan stops during defrosting.• Hot start after defrost ends.
Functions
- 15 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
2. Operation Detail
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 con-
troller and the operation diagram is as following
(1) The function of main control
Operation Detail
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
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
Selected Selected SelectedSpeed Speed Speed
INDOOR FAN Low Low
- 16 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Heating Mode OperationThe unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
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.
25 °C
27 °C
35 °C30 °C
22 °C
Pipetemperature
OFFIndoor fan
speed
LOLOW
LOW SELECTEDFAN
LOW LOLOW
COMP ON
Operation Detail
Thermal OFF ON
OFF ON
ON
ONOutdoor fan
Indoor fan
4 Way ON
Room
Temperature
Thermal Off
Thermal On
Indoor pipeTemperature
33(39)°C
25°C22(20)°C
36(42)°C
Minimum
3min
Settingfan
speed
Settingfan
speed
Settingfan
speedStop Low Stop StopLow LowLow Low
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
- 17 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
3. Dimensions
Dimensions
830
AB
47.9
275
550
69.588
9.2
1050
640
28.5
4
2
1
3
TL
A B
225
126.
5
76, S
eong
san-
dong
, Cha
ngw
on C
ity, G
yeon
gnam
,64
1-71
3, K
orea
ww
w.lg
eairc
on.c
om
CH
AS
SIS
CO
DE
: TL
Cei
ling
Cas
sette
2-w
ay
AR
NU
18G
TL*2
AR
NU
24G
TL*2
Nam
e
1Li
quid
pip
e co
nnec
tion
(18k
) ø6.
35, (
24k)
ø9.5
2
2G
as p
ipe
conn
ectio
n(1
8k) ø
12.7
, (24
k)ø1
5.88
3A
ir su
ctio
n gr
ill
4A
ir di
scha
rge
grill
Num
ber
Des
crip
ition
Not
e
1. U
nit s
houl
d be
inst
alle
d in
com
plia
nce
with
the
inst
alla
tion
man
ual
in
the
prod
uct b
ox.
2. U
nit s
hall
be g
roun
ded
in a
ccor
danc
e w
ith th
e lo
cal r
egul
atio
ns o
r
app
licab
le n
atio
nal c
odes
.
(uni
t : m
m)
- 18 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. Functions ....................................................................................19
2. Operation Details........................................................................20
3. Dimensions .................................................................................22
Ceiling Mounted Cassette Type (4Way) (1)
- 19 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. Functions
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Indoor Fan Speed Control
Soft Dry Operation Mode
Airflow Direction Control
Deice (defrost) control (Heating)
Auto Restart
Hot-start Control (Heating) • The indoor fan does not rotate until the evaporator pip-ing temperature will be reached at 25°C.
Compact and light design • To install a unit is very convenient because of smallersize than textile.
Low noise• The most advanced low-noise design.• The adoption of turbo fan and round type heat exchang-
er give the quietest operation.
Long life filter • Long life wrinkle(type) and washable and anti-bacteriafilter is adopted.
High head Drain pump • Built-in drain pump automatically drains water.• A standard drain-head height of up to 700mm is possible.
High-Ceiling corresponding Function • According to the height of ceiling, the RPM of indoor fanmotor is selected to increase air reaching distance.
Central Control(Optional)
Swirl Swing Control
• It is operating individually or totally by central control function.
• It is operating swirl swing
• Room temperature sensor. (Thermistor)
• Maintains the room temperature in accordance with the Setting Temperature.
• Indoor fan is delayed for 5 seconds at the starting.
• Jet, High, Med, Low, Lolow
• Intermittent operation of fan at low speed.
• The louver can be set at swing up and down automatically.
• Although the air-conditioner is turned off by a power failure, it is restarted auto-matically previous operation mode after power supply.
• Both the indoor and outdoor fan stops during defrosting.• Hot start after defrost ends.
Functions
- 20 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
2. Operation Detail
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 con-
troller and the operation diagram is as following
Swirl Swing ControlVane 2, 4 is almost vane closed while vane1, 3 is opened.
Vane 1, 3 and vane 2,4 turn over minutely
(1) The function of main control
Operation Detail
Vane 2
Vane 1 Vane 3
Vane 4
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
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
Selected Selected SelectedSpeed Speed Speed
INDOOR FAN Low Low
- 21 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Heating Mode OperationThe unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
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.
25 °C
27 °C
35 °C30 °C
22 °C
Pipetemperature
OFFIndoor fan
speed
LOLOW
LOW SELECTEDFAN
LOW LOLOW
COMP ON
Operation Detail
Thermal OFF ON
OFF ON
ON
ONOutdoor fan
Indoor fan
4 Way ON
Room
Temperature
Thermal Off
Thermal On
Indoor pipeTemperature
33(39)°C
25°C22(20)°C
36(42)°C
Minimum
3min
Settingfan
speed
Settingfan
speed
Settingfan
speedStop Low Stop StopLow LowLow Low
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
- 22 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
3. Dimensions
Dimensions
269
67030
570269
90
90
120.430521
670
570
450
40
110
110
670
670
4
1
3
2
5 6
76, S
eong
san-
dong
, Cha
ngw
on C
ity, G
yeon
gnam
,64
1-71
3, K
orea
ww
w.lg
eairc
on.c
om
CH
AS
SIS
CO
DE
: TE
Cei
ling
Cas
sette
4-w
ay
AR
NU
07G
TE*2
AR
NU
09G
TE*2
AR
NU
12G
TE*2
AR
NU
15G
TE*2
AR
NU
18G
TE*2
Nam
e
1Li
quid
pip
e co
nnec
tion
Unit
size(
7k, 9
k, 1
2k, 1
8k):ø
6.35
2G
as p
ipe
conn
ectio
nUn
it siz
e(7k
, 9k,
12k
, 18k
):ø12
.7
3D
rain
pip
e co
nnec
tion
4Po
wer
sup
ply
conn
ectio
n
5A
ir di
scha
rge
grill
6A
ir su
ctio
n gr
ill
Num
ber
Des
crip
ition
Not
e
1. U
nit s
houl
d be
inst
alle
d in
com
plia
nce
with
the
inst
alla
tion
man
ual
in
the
prod
uct b
ox.
2. U
nit s
hall
be g
roun
ded
in a
ccor
danc
e w
ith th
e lo
cal r
egul
atio
ns o
r
app
licab
le n
atio
nal c
odes
.
(uni
t : m
m)
- 23 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. Functions ....................................................................................24
2. Operation Details........................................................................25
3. Dimensions .................................................................................27
Ceiling Mounted Cassette Type (4Way) (2)
- 24 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. Functions
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Indoor Fan Speed Control
Soft Dry Operation Mode
Airflow Direction Control
Deice (defrost) control (Heating)
Auto Restart
Hot-start Control (Heating) • The indoor fan does not rotate until the evaporator pip-ing temperature will be reached at 25°C.
Compact and light design • To install a unit is very convenient because of smallersize than textile.
Low noise• The most advanced low-noise design.• The adoption of turbo fan and round type heat exchang-
er give the quietest operation.
Long life filter • Long life wrinkle(type) and washable and anti-bacteriafilter is adopted.
High head Drain pump • Built-in drain pump automatically drains water.• A standard drain-head height of up to 700mm is possible.
High-Ceiling corresponding Function • According to the height of ceiling, the RPM of indoor fanmotor is selected to increase air reaching distance.
Central Control(Optional)
Swirl Swing Control
• It is operating individually or totally by central control function.
• It is operating swirl swing
• Room temperature sensor. (Thermistor)
• Maintains the room temperature in accordance with the Setting Temperature.
• Indoor fan is delayed for 5 seconds at the starting.
• Jet, High, Med, Low, Lolow
• Intermittent operation of fan at low speed.
• The louver can be set at swing up and down automatically.
• Although the air-conditioner is turned off by a power failure, it is restarted auto-matically previous operation mode after power supply.
• Both the indoor and outdoor fan stops during defrosting.• Hot start after defrost ends.
Functions
- 25 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
2. Operation Detail
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 con-
troller and the operation diagram is as following
Swirl Swing ControlVane 2, 4 is almost vane closed while vane1, 3 is opened.
Vane 1, 3 and vane 2,4 turn over minutely
(1) The function of main control
Operation Detail
Vane 2
Vane 1 Vane 3
Vane 4
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
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
Selected Selected SelectedSpeed Speed Speed
INDOOR FAN Low Low
- 26 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Heating Mode OperationThe unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
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.
25 °C
27 °C
35 °C30 °C
22 °C
Pipetemperature
OFFIndoor fan
speed
LOLOW
LOW SELECTEDFAN
LOW LOLOW
COMP ON
Operation Detail
Thermal OFF ON
OFF ON
ON
ONOutdoor fan
Indoor fan
4 Way ON
Room
Temperature
Thermal Off
Thermal On
Indoor pipeTemperature
33(39)°C
25°C22(20)°C
36(42)°C
Minimum
3min
Settingfan
speed
Settingfan
speed
Settingfan
speedStop Low Stop StopLow LowLow Low
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
- 27 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
3. Dimensions
Dimensions
76, S
eong
san-
dong
, Cha
ngw
on C
ity, G
yeon
gnam
,64
1-71
3, K
orea
ww
w.lg
eairc
on.c
om
CH
AS
SIS
CO
DE
: TP
Cei
ling
Cas
sette
4-w
ay
AR
NU
24G
TP*2
AR
NU
28G
TP*2
Not
e
1. U
nit s
houl
d be
inst
alle
d in
com
plia
nce
with
the
inst
alla
tion
man
ual
in
the
prod
uct b
ox.
2. U
nit s
hall
be g
roun
ded
in a
ccor
danc
e w
ith th
e lo
cal r
egul
atio
ns o
r
app
licab
le n
atio
nal c
odes
.
618
950618
684840
671
787
500(Air outlet hole)
998260
500(
Air
outle
t hol
e)
4-R20
292
734
787
840
840
6080
108
5495
0
25
204
40 65
Nam
e
1Li
quid
pip
e co
nnec
tion
Uni
t siz
e(24
k, 2
8k):ø
9.52
2G
as p
ipe
conn
ectio
nU
nit s
ize(
24k,
28k
):ø15
.88
3D
rain
pip
e co
nnec
tion
4Po
wer
sup
ply
conn
ectio
n
5A
ir di
scha
rge
grill
6A
ir su
ctio
n gr
ill
Num
ber
Des
crip
ition
(uni
t : m
m)
4 3
1
56
2
204
804
154
A direction View
126R35
62
A
- 28 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Dimensions
840
126 62
R35
246195
A direction View
76, S
eong
san-
dong
, Cha
ngw
on C
ity, G
yeon
gnam
,64
1-71
3, K
orea
ww
w.lg
eairc
on.c
om
CH
AS
SIS
CO
DE
: TN
Cei
ling
Cas
sette
4-w
ay
AR
NU
36G
TN*2
Not
e
1. U
nit s
houl
d be
inst
alle
d in
com
plia
nce
with
the
inst
alla
tion
man
ual
in
the
prod
uct b
ox.
2. U
nit s
hall
be g
roun
ded
in a
ccor
danc
e w
ith th
e lo
cal r
egul
atio
ns o
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atio
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odes
.
Nam
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1Li
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k):ø
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as p
ipe
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nit s
ize(
36k)
:ø15
.88
3D
rain
pip
e co
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4Po
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sup
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conn
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5A
ir di
scha
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grill
6A
ir su
ctio
n gr
ill
Num
ber
Des
crip
ition
(uni
t : m
m)
4 3
1
56
2
A
- 29 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Dimensions
76, S
eong
san-
dong
, Cha
ngw
on C
ity, G
yeon
gnam
,64
1-71
3, K
orea
ww
w.lg
eairc
on.c
om
CH
AS
SIS
CO
DE
: TM
Cei
ling
Cas
sette
4-w
ay
AR
NU
42G
TM*2
AR
NU
48G
TM*2
Not
e
1. U
nit s
houl
d be
inst
alle
d in
com
plia
nce
with
the
inst
alla
tion
man
ual
in
the
prod
uct b
ox.
2. U
nit s
hall
be g
roun
ded
in a
ccor
danc
e w
ith th
e lo
cal r
egul
atio
ns o
r
app
licab
le n
atio
nal c
odes
.
Nam
e
1
Liqu
id p
ipe
conn
ectio
n U
nit s
ize(
42k)
:ø9.
52
2
Gas
pip
e co
nnec
tion
Uni
t siz
e(48
k):ø
15.8
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3
Dra
in p
ipe
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4
Pow
er s
uppl
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tion
5
Air
disc
harg
e gr
ill
6
Air
suct
ion
grill
Num
ber
Des
crip
ition
(uni
t : m
m)
4 3
1
2
56
840
109
R35
126
288
237
A direction View
A
- 30 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. Functions ....................................................................................31
2. Operation Details........................................................................32
3. Dimensions .................................................................................39
Art Cool Type(Mirror)
- 31 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Functions
1. Functions
• Room temperature sensor. (THERMISTOR)
• Maintains the room temperature in accordance with the Setting Temp.
• Indoor fan is delayed for 5 sec at the starting.
• High, Med, Low, CHAOS
• Intermittent operation of fan at low speed.
• The fan is switched to low(Cooling), med(Heating) speed.• The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.
• The fan is switched to intermittent or irregular operation• The fan speed is automatically switched from high to low speed.
• The louver can be set at the desired position or swing up and down automatically.
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Indoor Fan Speed Control
Operation indication Lamps (LED)
Soft Dry Operation Mode
• Both the indoor and outdoor fan stops dur-
ing defrosting.
• The indoor fan does not rotate until the evaporator pipe temperature will be reachedat 28°C.
Sleep Mode Auto Control
Natural Air Control by CHAOS Logic
Airflow Direction Control
Defrost(Deice) control (Heating)
Hot-start Control (Heating)
Signal ReceptorReceives the signals from the remote control.(Signal receiving sound: two short beeps or one long beep.)Operation Indication Lamps
On/Off : Lights up during the system operation.Sleep Mode : Lights up during Sleep Mode Auto operation.Timer : Lights up during Timer operation.Defrost Mode : Lights up during Defrost Mode or Hot Start operation.
Operation Details
- 32 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
2. Operation Details
DISPLAY1) High quality LCD remote controller suppliedOperation Indicator
• On while in appliance operation, off while in appliance pause
Timer Indicator• On while in timer mode (on/off) and in sleep timer mode, off when timer mode is completed or canceled
Defrost Indicator• Off except when hot start during heating mode operation or while in defrost control.
Plasma Indicator• On while in plasma mode, off while plasma mode is canceled.
Auto restart Indicator• On while auto restart mode, off while auto restart mode is canceled.
Auto restart• In case the power comes on again after a power failure, Auto Restarting Operation is the function to operate
procedures automatically to the previous operating conditions.If your want to use this operation, press the Auto Restart Button.
Power(Forced Operation)• Operation starts, when this button is pressed and stops when you press the button again.
Cooling Mode Operation• When the intake air temperature reaches 0.5°C below the setting temp, the compressor and the outdoor fan stop.
• When it reaches 0.5°C above the setting temp, they start to operate again.
Compressor ON Temp=> Setting Temp+0.5°C
Compressor OFF Temp => Setting Temp-0.5°C
• While in compressor running, operating with the airflow speed set by the remote controller. While in compres-sor not running, operating with the low airflow speed regardless of the setting.
Function of Controls
Operation Details
- 33 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Healthy Dehumidification Mode
• When the dehumidification operation input by the remote controller is received, the intake air temperature isdetected and the setting temp is automatically set according to the intake air temperature.
26°C ≤ Intake Air Temp => 25°C
24°C ≤ Intake Air Temp < 26°C => Intake Air Temp-1°C
18°C ≤ Intake Air Temp < 24°C => Intake Air Temp-0.5°C
Intake Air Temp < 18°C => 18°C
• While in compressor off, the indoor fan repeats low airflow speed and pause.
• While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidificationoperation and 4-min compressor off repeat
Compressor ON Temp. => Setting Temp+0.5°C
Compressor OFF Temp. => Setting Temp-0.5°C
• In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.
Heating Mode Operation
• When the intake air Temp. reaches Compressor OFF Temp., the compressor is turned off.When the intake air Temp. reaches Compressor ON Temp., the compressor is turned on.
Themo ON Temp. => Setting Temp. +2˚C
Themo OFF Temp. => Setting Temp.+4°C
• While in compressor on, when above 38°C, it operates with setting airflow speed (while in sleep mode, withthe medium airflow speed).
• While in compressor off, the indoor fan is off when the indoor pipe temp is below 33°C , when above 35°C , itoperates with the low airflow speed.
• While in defrost control, both of the indoor and outdoor fans are turned off.
Defrost Control
• While in heating mode operation in order to protect outdoor unit from freezing, reversed to cooling cycle todefrost of the outdoor unit.
Fuzzy Operation (Outdoor unit C/O Model)
• According to the temperature set by Fuzzy rule, when the intake air temp is 0.5°C or more below the settingtemp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor is turned on.
Compressor ON Temp => Setting Temp+0.5°C
Compressor OFF Temp => Setting Temp+0.5°C
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to theintake air temp at that time.
26°C ≤ Intake Air Temp => 25°C
24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C
22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.5°C
18°C ≤ Intake Air Temp<22°C => Intake Air Temp
Intake Air Temp<18°C => 18°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temper-ature
Operation Details
- 34 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Fuzzy Operation (Outdoor unit H/P Model)
• When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed sincethe operation off, the operation mode is selected.
• When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and onlythe indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake airtemp at that moment as follows.
24°C ≤ Inatake Air Temp => Fuzzy Operation for Cooling
21°C ≤ Inatake Air Temp<24°C => Fuzzy Operation for Dehumidification
Inatake Air Temp<21°C => Fuzzy Operation for Heating
• If any of the operation modes among cooling / dehumidification / heating mode operations is carried out for 10sec or longer before Fuzzy operation, the mode before Fuzzy operation is operated.
1) Fuzzy Operation for Cooling• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more below
the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor isturned on.
Compressor ON Temp => Setting Temp+0.5°C
Compressor OFF Temp => Setting Temp+0.5°C
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to theintake air temp at that time.
26°C ≤ Intake Air Temp => 25°C
24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C
22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.5°C
18°C ≤ Intake Air Temp<22°C => Intake Air Temp
Intake Air Temp < 18°C => 18°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature.
2) Fuzzy Operation for Dehumidification• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more below
the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor isturned on.
Compressor ON Temp => Setting Temp+0.5°C
Compressor OFF Temp => Setting Temp+0.5°C
Operation Details
- 35 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according tothe intake air temp at that time.
26°C ≤ Intake Air Temp => 25°C
24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C
22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.5°C
18°C ≤ Intake Air Temp<22°C => Intake Air Temp
Intake Air Temp < 18°C => 18°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan repeats the low airflow speed or pause as indehumidification operation.
3) Fuzzy Operation for Heating• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 3°C or more above
the setting temp, the compressor is turned off. When below the setting temp, the compressor is turned on.
Compressor ON Temp => Setting Temp + 2°CCompressor OFF Temp => Setting Temp + 4°C
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according tothe intake air temp at that time.20°C ≤ Intake Air Temp => Intake Air Temp + 0.5°CIntake Air Temp < 20°C => 20°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is set to the high or the medium according tothe intake air temperature and the setting temperature.
Airflow Speed Selection
• The airflow speed of the indoor fan is set to high, medium, low, or chaos by the input of the airflow speedselection key on the remote controller.
On-Timer Operation
• When the set time is reached after the time is input by the remote controller, the appliance starts to operate.
• The timer LED is on when the on-timer is input. It is off when the time set by the timer is reached.
• If the appliance is operating at the time set by the timer, the operation continues.
Off-Timer Operation
• When the set time is reached after the time is input by the remote controller, the appliance stops operating.
• The timer LED is on when the off-timer is input. It is off when the time set by the timer is reached.
• If the appliance is on pause at the time set by the timer, the pause continues.
Operation Details
- 36 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Off-Timer <=> On-Timer Operation
• When the set time is reached after the on/off time is input by the remote controller, the on/off-timer operationis carried out according to the set time.
Sleep Timer Operation
• When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote controller while inappliance operation, the operation of the appliance stops.
• While the appliance is on pause, the sleep timer mode cannot be input.
• While in cooling mode operation, 30 min later since the start of the sleep timer, the setting temperatureincreases by 1°C After another 30 min elapse, it increases by 1°C again.
• When the sleep timer mode is input while in cooling cycle mode, the airflow speed of the indoor fan is set tothe low.
• When the sleep timer mode is input while in heating cycle mode, the airflow speed of the indoor fan is set tothe medium.
Chaos Swing Mode• By the Chaos Swing key input, the vane automatically operates with the Chaos Swing or they are fixed to the
desired direction.
Chaos Natural Wind Mode• When the Chaos Natural Wind mode is selected and then operated, the high, medium, or low speed of the air-
flow mode is operated for 2~15 sec randomly by the Chaos Simulation.”
Jet Cool Mode Operation (Outdoor unit C/O Model)• If the Jet Cool key is input at any operation mode while in appliance operation, the Jet Cool mode operates.
• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.
• In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C
• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.
• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and thenoperated in order that the air outflow could reach further.
Jet Cool Mode Operation (Outdoor unit H/P Model)• While in heating mode or Fuzzy operation, the Jet Cool key cannot be input. When it is input while in the
other mode operation (cooling, dehumidification, ventilation), the Jet Cool mode is operated.”
• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.
• In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C
• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.
• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and thenoperated in order that the air outflow could reach further.
Auto Restarting Operation• When the power is restored after a sudden power failure while in appliance operation, the mode before the
power failure is kept on the memory and the appliance automatically operates in the mode on the memory.
• Operation Mode that is kept on the memory
Operation Details
- 37 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
- State of Operation ON/OFF
- Operation Mode/Setting Temp/Selected Airflow Speed
- Sleep Timer Mode/Remaining Time of Sleep Timer (unit of hour)
Forced Operation (Outdoor unit C/O Model)
• To operate the appliance by force in case that the remote controller is lost, the forced operation button is onthe main unit of the appliance to operate the appliance in the standard conditions.
• Press the forced operation button, the forced operation is carried out.
• Press the forced operation button once again to stop operation.
• The forced operation is carried out in cooling mode with the setting temperature 22°C and the high speed ofairflow.
Forced Operation (Outdoor unit H/P Model)
• To operate the appliance by force in case that the remote controller is lost, the forced operation selectionswitch is on the main unit of the appliance to operate the appliance in the standard conditions.
• Press the forced operation button, the forced operation is carried out.
• Press the forced operation button once again to stop operation.
• In the forced operation mode, the indoor fan is operated at low speed for around 15 sec and then the operationcondition is set according to the intake air temperature as follows.
24°C ≤ Intake Air Temp => Cooling Mode Operation, 22°C, High Speed
21°C ≤ Intake Air Temp < 24°C => Dehumidification Operation, 23°C, High Speed
Intake Air Temp < 21°C => Heating Mode Operation, 24°C, High Speed
Test Operation Control
• To check the condition of the installation when installing the appliance, the appliance is operated at coolingmode, high speed of airflow, compressor-on for 18 min without controlling the room temperature.
• After supplying power to the main body, keep pressing the forced operation button for about 3 seconds.
• While in test operation, a key can be input by the remote controller. When a key (operation start/stop, operation mode selection, airflow speed selection, temperature control, JetCool) is input by the remote controller, the test operation is canceled and the appliance is operated accordingto the setting by the remote controller.
Protection of the evaporator pipe from frosting
• In the temperrature of the indoor pipe is below 0°C after 7 minutes from starting the compressor, the compres-sor and outdoor fan are stopped, and 3 minutes delay of operating of the compressor, when the temperature ofthe indoor pipe is over 7°C, the compressor and the outdoor fan are reoperated.
• Outdoor fan motor stops when indoor pipe temperature is blow 3°C and restarts at the pipe temperature above6°C or after 90 seconds, if the pipe temperature does not rise to 6°C, outdoor fan motor runs continuously ateven below 3°C.
Operation Details
- 38 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Buzzer Sounding Operation
• When the appliance-operation key is input by the remote controller, the short “beep-beep-” sounds.
• When the appliance-pause key is input by the remote controller, the long “beep—” sounds.
Air Cleaner Operation
• When an air cleaner function is selected during Air Conditioner operation- Plasma air cleaner function will be operated while in any operation mode with selecting the function.- The function is to be stopped while it is operating with selecting the function.
• When an air cleaner function is selected during operation off- The function will be only operated.
• When inlet grille of air conditioner is opened during plasma operation, High Voltage Generator(H.V.B) is to bestopped. When inlet grille of air conditioner is closed during plasma operation, High Voltage Generator(H.V.B)will be operated again.
Dimensions
- 39 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
3. Dimensions
76, S
eong
san-
dong
, Cha
ngw
on C
ity, G
yeon
gnam
,64
1-71
3, K
orea
ww
w.lg
eairc
on.c
om
CH
AS
SIS
CO
DE
: SE
AR
T C
OO
L M
irror
AR
NU
07G
SE
*2A
RN
U09
GS
E*2
AR
NU
12G
SE
*2A
RN
U15
GS
E*2
WM
odel
AR
NU
07G
SE
*2A
RN
U09
GS
E*2
AR
NU
12G
SE
*2A
RN
U15
GS
E*2
HD
915
282
169
Not
e
1. U
nit s
houl
d be
inst
alle
d in
com
plia
nce
with
the
inst
alla
tion
man
ual
in
the
prod
uct b
ox.
2. U
nit s
hall
be g
roun
ded
in a
ccor
danc
e w
ith th
e lo
cal r
egul
atio
ns o
r
app
licab
le n
atio
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Dimensions
- 40 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
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- 41 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. Functions ....................................................................................42
2. Operation Details........................................................................43
3. Dimensions .................................................................................50
ArtCoolGallery
Functions
- 42 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. Functions
• Room temperature sensor. (THERMISTOR)
• Maintains the room temperature in accordance with the Setting Temp.
• Indoor fan is delayed for 5 sec at the starting.
• High, Med, Low, CHAOS
• Intermittent operation of fan at low speed.
• The fan is switched to low(Cooling), med(Heating) speed.• The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.
• The fan is switched to intermittent or irregular operation• The fan speed is automatically switched from high to low speed.
• The louver can be set at the desired position or swing up and down automatically.
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Indoor Fan Speed Control
Operation indication Lamps (LED)
Soft Dry Operation Mode
• Both the indoor and outdoor fan stops dur-
ing defrosting.
• The indoor fan does not rotate until the evaporator pipe temperature will be reachedat 28°C.
Sleep Mode Auto Control
Natural Air Control by CHAOS Logic
Airflow Direction Control
Defrost(Deice) control (Heating)
Hot-start Control (Heating)
Signal ReceptorReceives the signals from the remote control.(Signal receiving sound: two short beeps or one long beep.)Operation Indication Lamps
On/Off : Lights up during the system operation.Sleep Mode : Lights up during Sleep Mode Auto operation.Timer : Lights up during Timer operation.Defrost Mode : Lights up during Defrost Mode or Hot Start operation.
Operation Details
- 43 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
2. Operation Details
DISPLAY1) High quality LCD remote controller suppliedOperation Indicator
• On while in appliance operation, off while in appliance pause
Timer Indicator• On while in timer mode (on/off) and in sleep timer mode, off when timer mode is completed or canceled
Defrost Indicator• Off except when hot start during heating mode operation or while in defrost control.
Plasma Indicator• On while in plasma mode, off while plasma mode is canceled.
Auto restart Indicator• On while auto restart mode, off while auto restart mode is canceled.
Auto restart• In case the power comes on again after a power failure, Auto Restarting Operation is the function to operate
procedures automatically to the previous operating conditions.If your want to use this operation, press the Auto Restart Button.
Power(Forced Operation)• Operation starts, when this button is pressed and stops when you press the button again.
Cooling Mode Operation• When the intake air temperature reaches 0.5°C below the setting temp, the compressor and the outdoor fan stop.
• When it reaches 0.5°C above the setting temp, they start to operate again.
Compressor ON Temp=> Setting Temp+0.5°C
Compressor OFF Temp => Setting Temp-0.5°C
• While in compressor running, operating with the airflow speed set by the remote controller. While in compres-sor not running, operating with the low airflow speed regardless of the setting.
Function of Controls
Operation Details
- 44 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Healthy Dehumidification Mode
• When the dehumidification operation input by the remote controller is received, the intake air temperature isdetected and the setting temp is automatically set according to the intake air temperature.
26°C ≤ Intake Air Temp => 25°C
24°C ≤ Intake Air Temp < 26°C => Intake Air Temp-1°C
18°C ≤ Intake Air Temp < 24°C => Intake Air Temp-0.5°C
Intake Air Temp < 18°C => 18°C
• While in compressor off, the indoor fan repeats low airflow speed and pause.
• While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidificationoperation and 4-min compressor off repeat
Compressor ON Temp. => Setting Temp+0.5°C
Compressor OFF Temp. => Setting Temp-0.5°C
• In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.
Heating Mode Operation
• When the intake air Temp. reaches Compressor OFF Temp., the compressor is turned off.When the intake air Temp. reaches Compressor ON Temp., the compressor is turned on.
Themo ON Temp. => Setting Temp. +2˚C
Themo OFF Temp. => Setting Temp.+4°C
• While in compressor on, when above 38°C, it operates with setting airflow speed (while in sleep mode, withthe medium airflow speed).
• While in compressor off, the indoor fan is off when the indoor pipe temp is below 33°C , when above 35°C , itoperates with the low airflow speed.
• While in defrost control, both of the indoor and outdoor fans are turned off.
Defrost Control
• While in heating mode operation in order to protect outdoor unit from freezing, reversed to cooling cycle todefrost of the outdoor unit.
Fuzzy Operation (Outdoor unit C/O Model)
• According to the temperature set by Fuzzy rule, when the intake air temp is 0.5°C or more below the settingtemp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor is turned on.
Compressor ON Temp => Setting Temp+0.5°C
Compressor OFF Temp => Setting Temp+0.5°C
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to theintake air temp at that time.
26°C ≤ Intake Air Temp => 25°C
24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C
22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.5°C
18°C ≤ Intake Air Temp<22°C => Intake Air Temp
Intake Air Temp<18°C => 18°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temper-ature
Operation Details
- 45 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Fuzzy Operation (Outdoor unit H/P Model)
• When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed sincethe operation off, the operation mode is selected.
• When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and onlythe indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake airtemp at that moment as follows.
24°C ≤ Inatake Air Temp => Fuzzy Operation for Cooling
21°C ≤ Inatake Air Temp<24°C => Fuzzy Operation for Dehumidification
Inatake Air Temp<21°C => Fuzzy Operation for Heating
• If any of the operation modes among cooling / dehumidification / heating mode operations is carried out for 10sec or longer before Fuzzy operation, the mode before Fuzzy operation is operated.
1) Fuzzy Operation for Cooling• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more below
the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor isturned on.
Compressor ON Temp => Setting Temp+0.5°C
Compressor OFF Temp => Setting Temp+0.5°C
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to theintake air temp at that time.
26°C ≤ Intake Air Temp => 25°C
24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C
22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.5°C
18°C ≤ Intake Air Temp<22°C => Intake Air Temp
Intake Air Temp < 18°C => 18°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature.
2) Fuzzy Operation for Dehumidification• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more below
the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor isturned on.
Compressor ON Temp => Setting Temp+0.5°C
Compressor OFF Temp => Setting Temp+0.5°C
Operation Details
- 46 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according tothe intake air temp at that time.
26°C ≤ Intake Air Temp => 25°C
24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C
22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.5°C
18°C ≤ Intake Air Temp<22°C => Intake Air Temp
Intake Air Temp < 18°C => 18°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan repeats the low airflow speed or pause as indehumidification operation.
3) Fuzzy Operation for Heating• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 3°C or more above
the setting temp, the compressor is turned off. When below the setting temp, the compressor is turned on.
Compressor ON Temp => Setting Temp + 2°CCompressor OFF Temp => Setting Temp + 4°C
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according tothe intake air temp at that time.20°C ≤ Intake Air Temp => Intake Air Temp + 0.5°CIntake Air Temp < 20°C => 20°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is set to the high or the medium according tothe intake air temperature and the setting temperature.
Airflow Speed Selection
• The airflow speed of the indoor fan is set to high, medium, low, or chaos by the input of the airflow speedselection key on the remote controller.
On-Timer Operation
• When the set time is reached after the time is input by the remote controller, the appliance starts to operate.
• The timer LED is on when the on-timer is input. It is off when the time set by the timer is reached.
• If the appliance is operating at the time set by the timer, the operation continues.
Off-Timer Operation
• When the set time is reached after the time is input by the remote controller, the appliance stops operating.
• The timer LED is on when the off-timer is input. It is off when the time set by the timer is reached.
• If the appliance is on pause at the time set by the timer, the pause continues.
Operation Details
- 47 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Off-Timer <=> On-Timer Operation
• When the set time is reached after the on/off time is input by the remote controller, the on/off-timer operationis carried out according to the set time.
Sleep Timer Operation
• When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote controller while inappliance operation, the operation of the appliance stops.
• While the appliance is on pause, the sleep timer mode cannot be input.
• While in cooling mode operation, 30 min later since the start of the sleep timer, the setting temperatureincreases by 1°C After another 30 min elapse, it increases by 1°C again.
• When the sleep timer mode is input while in cooling cycle mode, the airflow speed of the indoor fan is set tothe low.
• When the sleep timer mode is input while in heating cycle mode, the airflow speed of the indoor fan is set tothe medium.
Chaos Swing Mode• By the Chaos Swing key input, the vane automatically operates with the Chaos Swing or they are fixed to the
desired direction.
Chaos Natural Wind Mode• When the Chaos Natural Wind mode is selected and then operated, the high, medium, or low speed of the air-
flow mode is operated for 2~15 sec randomly by the Chaos Simulation.”
Jet Cool Mode Operation (Outdoor unit C/O Model)• If the Jet Cool key is input at any operation mode while in appliance operation, the Jet Cool mode operates.
• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.
• In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C
• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.
• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and thenoperated in order that the air outflow could reach further.
Jet Cool Mode Operation (Outdoor unit H/P Model)• While in heating mode or Fuzzy operation, the Jet Cool key cannot be input. When it is input while in the
other mode operation (cooling, dehumidification, ventilation), the Jet Cool mode is operated.”
• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.
• In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C
• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.
• When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and thenoperated in order that the air outflow could reach further.
Auto Restarting Operation• When the power is restored after a sudden power failure while in appliance operation, the mode before the
power failure is kept on the memory and the appliance automatically operates in the mode on the memory.
• Operation Mode that is kept on the memory
Operation Details
- 48 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
- State of Operation ON/OFF
- Operation Mode/Setting Temp/Selected Airflow Speed
- Sleep Timer Mode/Remaining Time of Sleep Timer (unit of hour)
Forced Operation (Outdoor unit C/O Model)
• To operate the appliance by force in case that the remote controller is lost, the forced operation button is onthe main unit of the appliance to operate the appliance in the standard conditions.
• Press the forced operation button, the forced operation is carried out.
• Press the forced operation button once again to stop operation.
• The forced operation is carried out in cooling mode with the setting temperature 22°C and the high speed ofairflow.
Forced Operation (Outdoor unit H/P Model)
• To operate the appliance by force in case that the remote controller is lost, the forced operation selectionswitch is on the main unit of the appliance to operate the appliance in the standard conditions.
• Press the forced operation button, the forced operation is carried out.
• Press the forced operation button once again to stop operation.
• In the forced operation mode, the indoor fan is operated at low speed for around 15 sec and then the operationcondition is set according to the intake air temperature as follows.
24°C ≤ Intake Air Temp => Cooling Mode Operation, 22°C, High Speed
21°C ≤ Intake Air Temp < 24°C => Dehumidification Operation, 23°C, High Speed
Intake Air Temp < 21°C => Heating Mode Operation, 24°C, High Speed
Test Operation Control
• To check the condition of the installation when installing the appliance, the appliance is operated at coolingmode, high speed of airflow, compressor-on for 18 min without controlling the room temperature.
• After supplying power to the main body, keep pressing the forced operation button for about 3 seconds.
• While in test operation, a key can be input by the remote controller. When a key (operation start/stop, operation mode selection, airflow speed selection, temperature control, JetCool) is input by the remote controller, the test operation is canceled and the appliance is operated accordingto the setting by the remote controller.
Protection of the evaporator pipe from frosting
• In the temperrature of the indoor pipe is below 0°C after 7 minutes from starting the compressor, the compres-sor and outdoor fan are stopped, and 3 minutes delay of operating of the compressor, when the temperature ofthe indoor pipe is over 7°C, the compressor and the outdoor fan are reoperated.
• Outdoor fan motor stops when indoor pipe temperature is blow 3°C and restarts at the pipe temperature above6°C or after 90 seconds, if the pipe temperature does not rise to 6°C, outdoor fan motor runs continuously ateven below 3°C.
Operation Details
- 49 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Buzzer Sounding Operation
• When the appliance-operation key is input by the remote controller, the short “beep-beep-” sounds.
• When the appliance-pause key is input by the remote controller, the long “beep—” sounds.
Air Cleaner Operation
• When an air cleaner function is selected during Air Conditioner operation- Plasma air cleaner function will be operated while in any operation mode with selecting the function.- The function is to be stopped while it is operating with selecting the function.
• When an air cleaner function is selected during operation off- The function will be only operated.
• When inlet grille of air conditioner is opened during plasma operation, High Voltage Generator(H.V.B) is to bestopped. When inlet grille of air conditioner is closed during plasma operation, High Voltage Generator(H.V.B)will be operated again.
- 50 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Dimensions
3. Dimensions
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- 51 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. Funtions ......................................................................................52
2. Operation Details........................................................................53
3. Dimensions .................................................................................56
Ceiling Concealed Duct Type (Low static)
- 52 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. FuntionsIndoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Indoor Fan Speed Control
Soft Dry Operation Mode
Deice (defrost) control (Heating)
Auto Restart
Hot-start Control (Heating)• The indoor fan does not rotate until the evaporator piping
temperature reaches 25°C.
High head height Drain pump • A standard drain-head height of up to 700mm is possible.
Central Control(Optional) • It is operating individually or totally by central control function.
• Room temperature sensor. (Thermistor)
• Maintains the room temperature in accordance with the Setting Temperature.
• Indoor fan is delayed for 5 seconds at the starting.
• High, Med, Low
• Intermittent operation of fan at low speed.
• Although the air-conditioner is turned off by a power failure, it is restarted auto-matically previous operation mode after power supply.
• Both the indoor and outdoor fan stops during defrosting.• Hot start after defrost ends.
Functions
- 53 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
2. Operation Details
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
SET TEMPERATURE +0.5°C(Thermo. ON)
SET TEMPERATURE -0.5°C(Thermo. OFF) More than More than
3 minutes 3 minutes
Selecting Selecting Selecting
fan speed fan speed fan speed
COMPRESSOR ON OFF ON OFF ON
INDOOR FAN Low Low
(1) The function of main control
Operation Details
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
- 54 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Operation Details
Heating Mode Operation The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Thermal
Outdoor fan
Indoor fan
4way valve
Setting Temperature(Thermal ON)
Setting Temperature +3°C
(Thermal OFF)
Indoor unitHeat-Exchangertemperature
T LT
T ST
1minMinimum
3min 1min
3min
Settingfan
spped
Settingfan
spped
Settingfan
spped
40°C
T On
T Off
ON
ON
ON
ON
LowLowLowLowLow OffOffOff
ON
OFF
OFF
Low fan during 10sec
A
A
B
C
B
Intake Air Temperature
• Compressor-off interval : - While the indoor Heat-Exchanger temperature is higher than 40°C, fan operates at low speed, when it becomes lower than 40°C fan stops. - For eluminating latent heat-loss, fan operates at low speed for 10 seconds periodically.
- To be operated "Low" except initial Hotstart operation
C
Chassis
Hotstart On T On
Hotstart Off T Off
Low temperature T LT
Setting Temperature T ST
High Static Low Static Convertible
BH BG BR
19°C 19°C 19°C 19°C 19°C 19°C 19°C 26°C 26°C
22°C 22°C 22°C 22°C 22°C 22°C 22°C 27°C 27°C
25°C 25°C 25°C 25°C 25°C 25°C 25°C 28°C 28°C
27°C 27°C 27°C 27°C 27°C 27°C 27°C 30°C 30°C
B1 B2 CE CF VE VJ
- 55 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Hot-Start Control
• The indoor fan does not rotate until the indoor unit Hex-Exchanger temperature reaches 30°C.
• The operation diagram is as following.
Operation Details
ON ON
Off Off LowLow
1 min
Hotstart On
Hotstart Off
Indoor unitHeat-Exchanger
temperature
Setting fanspeed
Setting fanspeed
ThermalOutdoor fan
Indoor fan
4way Valve ON
1 min
• Initial Hotstart On state
➀ Power Off On ➁ Operation Off On➂ Cooling operation Heating operation➃ Defrost operation
- 56 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
3. Dimensions
Dimensions
76, S
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san-
dong
, Cha
ngw
on C
ity, G
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- 57 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. Funtions ......................................................................................58
2. Operation Details........................................................................59
3. Dimensions .................................................................................62
Ceiling Concealed Duct Type (Built in)
- 58 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. FuntionsIndoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Indoor Fan Speed Control
Soft Dry Operation Mode
Deice (defrost) control (Heating)
Auto Restart
Hot-start Control (Heating)• The indoor fan does not rotate until the evaporator piping
temperature reaches 25°C.
High head height Drain pump • A standard drain-head height of up to 700mm is possible.
Central Control(Optional) • It is operating individually or totally by central control function.
• Room temperature sensor. (Thermistor)
• Maintains the room temperature in accordance with the Setting Temperature.
• Indoor fan is delayed for 5 seconds at the starting.
• High, Med, Low
• Intermittent operation of fan at low speed.
• Although the air-conditioner is turned off by a power failure, it is restarted auto-matically previous operation mode after power supply.
• Both the indoor and outdoor fan stops during defrosting.• Hot start after defrost ends.
Functions
- 59 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
2. Operation Details
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
SET TEMPERATURE +0.5°C(Thermo. ON)
SET TEMPERATURE -0.5°C(Thermo. OFF) More than More than
3 minutes 3 minutes
Selecting Selecting Selecting
fan speed fan speed fan speed
COMPRESSOR ON OFF ON OFF ON
INDOOR FAN Low Low
(1) The function of main control
Operation Details
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
- 60 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Operation Details
Heating Mode Operation The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Thermal
Outdoor fan
Indoor fan
4way valve
Setting Temperature(Thermal ON)
Setting Temperature +3°C
(Thermal OFF)
Indoor unitHeat-Exchangertemperature
T LT
T ST
1minMinimum
3min 1min
3min
Settingfan
spped
Settingfan
spped
Settingfan
spped
40°C
T On
T Off
ON
ON
ON
ON
LowLowLowLowLow OffOffOff
ON
OFF
OFF
Low fan during 10sec
A
A
B
C
B
Intake Air Temperature
• Compressor-off interval : - While the indoor Heat-Exchanger temperature is higher than 40°C, fan operates at low speed, when it becomes lower than 40°C fan stops. - For eluminating latent heat-loss, fan operates at low speed for 10 seconds periodically.
- To be operated "Low" except initial Hotstart operation
C
Chassis
Hotstart On T On
Hotstart Off T Off
Low temperature T LT
Setting Temperature T ST
High Static Low Static Convertible
BH BG BR
19°C 19°C 19°C 19°C 19°C 19°C 19°C 26°C 26°C
22°C 22°C 22°C 22°C 22°C 22°C 22°C 27°C 27°C
25°C 25°C 25°C 25°C 25°C 25°C 25°C 28°C 28°C
27°C 27°C 27°C 27°C 27°C 27°C 27°C 30°C 30°C
B1 B2 CE CF VE VJ
- 61 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Hot-Start Control
• The indoor fan does not rotate until the indoor unit Hex-Exchanger temperature reaches 30°C.
• The operation diagram is as following.
Operation Details
ON ON
Off Off LowLow
1 min
Hotstart On
Hotstart Off
Indoor unitHeat-Exchanger
temperature
Setting fanspeed
Setting fanspeed
ThermalOutdoor fan
Indoor fan
4way Valve ON
1 min
• Initial Hotstart On state
➀ Power Off On ➁ Operation Off On➂ Cooling operation Heating operation➃ Defrost operation
- 62 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
3. Dimensions
Dimensions
76, S
eong
san-
dong
, Cha
ngw
on C
ity, G
yeon
gnam
,64
1-71
3, K
orea
ww
w.lg
eairc
on.c
om
CH
AS
SIS
CO
DE
: B3/
B4
Cei
ling
Con
ceal
ed D
uct (
Bui
lt in
)
ARNU
07G
B3G
2+PB
SGB3
0(Ac
c'y),
PBSC
30(A
cc'y)
ARNU
09G
B3G
2+PB
SGB3
0(Ac
c'y),
PBSC
30(A
cc'y)
ARNU
12G
B3G
2+PB
SGB3
0(Ac
c'y),
PBSC
30(A
cc'y)
ARNU
15G
B3G
2+PB
SGB3
0(Ac
c'y),
PBSC
30(A
cc'y)
ARNU
18G
B4G
2+PB
SGB4
0(Ac
c'y),
PBSC
40(A
cc'y)
ARNU
24G
B4G
2+PB
SGB4
0(Ac
c'y),
PBSC
40(A
cc'y)
Not
e
1. U
nit s
houl
d be
inst
alle
d in
com
plia
nce
with
the
inst
alla
tion
man
ual
in
the
prod
uct b
ox.
2. U
nit s
hall
be g
roun
ded
in a
ccor
danc
e w
ith th
e lo
cal r
egul
atio
ns o
r
app
licab
le n
atio
nal c
odes
.
Wit
h S
uct
ion
Gri
lle
Wit
h S
uct
ion
Gri
lle &
Su
ctio
n C
anva
s
B3/
B4
A
Wit
h S
uct
ion
Gri
lle&
Su
ctio
n C
anva
s W
ith
Su
ctio
n G
rille
AC
B
AB
C
Btu
/hA
7,9,
12k
820
18,2
4k11
00
AB
CP
BS
GB
3091
035
956
PB
SG
B40
1188
359
56
AB
CP
BS
C30
821
274
42~2
50P
BS
C40
1100
274
42~2
50
250
190
618
388
190
500(Max)575
388
190
6560
277
216 24
Nam
e
1Li
quid
pip
e co
nnec
tion
2G
as p
ipe
conn
ectio
n
3D
rain
pip
e co
nnec
tion
4Po
wer
sup
ply
conn
ectio
n
5A
ir di
scha
rge
6A
ir su
ctio
n
Num
ber
Des
crip
ition
(uni
t : m
m)
Unit
size(
7k,9
k,12
k,18
k):ø
6.35
Unit
size(
24k)
:ø9.
52Un
it siz
e(7k
,9k,
12k,
18k)
:ø12
.7Un
it siz
e(24
k):ø
15.8
8
6
5
1 3
4
2
- 63 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. Funtions ......................................................................................64
2. Operation Details........................................................................65
3. Dimensions .................................................................................68
Ceiling Concealed Duct Type (High Static)
Funtion
- 64 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. FuntionsIndoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Indoor Fan Speed Control
Soft Dry Operation Mode
Deice (defrost) control (Heating)
Auto Restart
Hot-start Control (Heating)• The indoor fan does not rotate until the evaporator piping
temperature reaches 30°C.
High head height Drain pump • A standard drain-head height of up to 700mm is possible.
Central Control(Optional) • It is operating individually or totally by central control function.
• Room temperature sensor. (Thermistor)
• Maintains the room temperature in accordance with the Setting Temperature.
• Indoor fan is delayed for 5 seconds at the starting.
• High, Med, Low
• Intermittent operation of fan at low speed.
• Although the air-conditioner is turned off by a power failure, it is restarted auto-matically previous operation mode after power supply.
• Both the indoor and outdoor fan stops during defrosting.• Hot start after defrost ends.
Operation Details
- 65 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Intake Air Temperature
SET TEMPERATURE +0.5°C(Thermo. ON)
SET TEMPERATURE -0.5°C(Thermo. OFF) More than More than
3 minutes 3 minutes
Selecting Selecting Selecting
fan speed fan speed fan speed
COMPRESSOR ON OFF ON OFF ON
INDOOR FAN Low Low
2. Operation Details
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.
(1) The function of main control
Operation Details
- 66 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Heating Mode Operation The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Thermal
Outdoor fan
Indoor fan
4way valve
Setting Temperature(Thermal ON)
Setting Temperature +3°C
(Thermal OFF)
Indoor unitHeat-Exchangertemperature
T LT
T ST
1minMinimum
3min 1min
3min
Settingfan
spped
Settingfan
spped
Settingfan
spped
40°C
T On
T Off
ON
ON
ON
ON
LowLowLowLowLow OffOffOff
ON
OFF
OFF
Low fan during 10sec
A
A
B
C
B
Intake Air Temperature
• Compressor-off interval : - While the indoor Heat-Exchanger temperature is higher than 40°C, fan operates at low speed, when it becomes lower than 40°C fan stops. - For eluminating latent heat-loss, fan operates at low speed for 10 seconds periodically.
- To be operated "Low" except initial Hotstart operation
C
Chassis
Hotstart On T On
Hotstart Off T Off
Low temperature T LT
Setting Temperature T ST
High Static Low Static Convertible
BH BG BR
19°C 19°C 19°C 19°C 19°C 19°C 19°C 26°C 26°C
22°C 22°C 22°C 22°C 22°C 22°C 22°C 27°C 27°C
25°C 25°C 25°C 25°C 25°C 25°C 25°C 28°C 28°C
27°C 27°C 27°C 27°C 27°C 27°C 27°C 30°C 30°C
B1 B2 CE CF VE VJ
Operation Details
- 67 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Hot-Start Control
• The indoor fan does not rotate until the indoor unit Hex-Exchanger temperature reaches 22°C.
• The operation diagram is as following.
ON ON
Off Off LowLow
1 min
Hotstart On
Hotstart Off
Indoor unitHeat-Exchanger
temperature
Setting fanspeed
Setting fanspeed
ThermalOutdoor fan
Indoor fan
4way Valve ON
1 min
• Initial Hotstart On state
➀ Power Off On ➁ Operation Off On➂ Cooling operation Heating operation➃ Defrost operation
Dimensions
- 68 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
3. Dimensions
76, S
eong
san-
dong
, Cha
ngw
on C
ity, G
yeon
gnam
,64
1-71
3, K
orea
ww
w.lg
eairc
on.c
om
CH
AS
SIS
CO
DE
: BH
Cei
ling
Con
ceal
ed D
uct (
Hig
h S
tatic
)
AR
NU
07G
BH
A2
AR
NU
09G
BH
A2
AR
NU
12G
BH
A2
AR
NU
15G
BH
A2
AR
NU
18G
BH
A2
AR
NU
24G
BH
A2
Not
e
1. U
nit s
houl
d be
inst
alle
d in
com
plia
nce
with
the
inst
alla
tion
man
ual
in
the
prod
uct b
ox.
2. U
nit s
hall
be g
roun
ded
in a
ccor
danc
e w
ith th
e lo
cal r
egul
atio
ns o
r
app
licab
le n
atio
nal c
odes
.
48 5216
5
140
123
101
3151 29
70
50 100
260
87
750
30
47355
450
932
133
355
450
114
224
60
R37.5
47
49
24
21
882
882
158
260
450
65
108
6424
321
224
311
9
75
115
745
20 175
Nam
e
1
Liqu
id p
ipe
conn
ectio
n
2
Gas
pip
e co
nnec
tion
3
Dra
in p
ipe
conn
ectio
n
4
Pow
er s
uppl
y co
nnec
tion
5
Air
disc
harg
e
6
Air
suct
ion
Num
ber
Des
crip
ition
(uni
t : m
m)
Unit
size(
7k,9
k,12
k,18
k):ø
6.35
Unit
size(
24k)
:ø9.
52Un
it siz
e(7k
,9k,
12k,
18k)
:ø12
.7Un
it siz
e(24
k):ø
15.8
83
2
5
1
4
6
Dimensions
- 69 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
76, S
eong
san-
dong
, Cha
ngw
on C
ity, G
yeon
gnam
,64
1-71
3, K
orea
ww
w.lg
eairc
on.c
om
CH
AS
SIS
CO
DE
: BG
Cei
ling
Con
ceal
ed D
uct (
Hig
h S
tatic
)
AR
NU
28G
BG
A2
AR
NU
36G
BG
A2
AR
NU
42G
BG
A2
Not
e
1. U
nit s
houl
d be
inst
alle
d in
com
plia
nce
with
the
inst
alla
tion
man
ual
in
the
prod
uct b
ox.
2. U
nit s
hall
be g
roun
ded
in a
ccor
danc
e w
ith th
e lo
cal r
egul
atio
ns o
r
app
licab
le n
atio
nal c
odes
.
261
122
140
47
5316
5
325110
2
50 100
87
830
2975
355
87
1,23
0
450
23
49
108
1,18
2
158 113
298
186
232
243
243
232
23211
51,
043
20 220
32
5
1
4
6N
ame
1
Liqu
id p
ipe
conn
ectio
n Un
it siz
e(28
k,36
k,42
k):ø
9.52
2
Gas
pip
e co
nnec
tion
Unit
size(
28k,
36k,
42k)
:ø15
.88
3
Dra
in p
ipe
conn
ectio
n
4
Pow
er s
uppl
y co
nnec
tion
5
Air
disc
harg
e
6
Air
suct
ion
Num
ber
Des
crip
ition
(uni
t : m
m)
152
224
60
ø100
1,18
2
450
Dimensions
- 70 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
76, S
eong
san-
dong
, Cha
ngw
on C
ity, G
yeon
gnam
,64
1-71
3, K
orea
ww
w.lg
eairc
on.c
om
CH
AS
SIS
CO
DE
: BR
Cei
ling
Con
ceal
ed D
uct (
Hig
h S
tatic
)
AR
NU
48G
BR
A2
Not
e
1. U
nit s
houl
d be
inst
alle
d in
com
plia
nce
with
the
inst
alla
tion
man
ual
in
the
prod
uct b
ox.
2. U
nit s
hall
be g
roun
ded
in a
ccor
danc
e w
ith th
e lo
cal r
egul
atio
ns o
r
app
licab
le n
atio
nal c
odes
.
221123
72268310
1
90
135
122
144
260
190
115
1,28
4
477 56
590
118 1,
004
114
1,23
0
50
32
168 185
215
279
241
279
380
140
21512
01,
092
25 303
Nam
e
1
Liqu
id p
ipe
conn
ectio
n Un
it siz
e(48
k):ø
9.52
2
Gas
pip
e co
nnec
tion
Unit
size(
48k)
:ø15
.88
3
Dra
in p
ipe
conn
ectio
n
4
Pow
er s
uppl
y co
nnec
tion
5
Air
disc
harg
e
6
Air
suct
ion
Num
ber
Des
crip
ition
(uni
t : m
m)
32
1
5
6
4
198
312
60
R60
590
1,23
0
Dimensions
- 71 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
76, S
eong
san-
dong
, Cha
ngw
on C
ity, G
yeon
gnam
,64
1-71
3, K
orea
ww
w.lg
eairc
on.c
om
CH
AS
SIS
CO
DE
: B8
Cei
ling
Con
ceal
ed D
uct (
Hig
h S
tatic
)
UR
NU
76G
B8A
2U
RN
U96
GB
8A2
Not
e
1. U
nit s
houl
d be
inst
alle
d in
com
plia
nce
with
the
inst
alla
tion
man
ual
in
the
prod
uct b
ox.
2. U
nit s
hall
be g
roun
ded
in a
ccor
danc
e w
ith th
e lo
cal r
egul
atio
ns o
r
app
licab
le n
atio
nal c
odes
.
1,56
2
1,62
246
0
688
560 64
30
1,2
20
1,5
62
329
320
329
318
293
460 688
290 161
70 120
9914
0
44020
1,39
611
5
Nam
e
1
Liqu
id p
ipe
conn
ectio
n
2
Gas
pip
e co
nnec
tion
3
Dra
in p
ipe
conn
ectio
n
4
Pow
er s
uppl
y co
nnec
tion
5
Air
disc
harg
e
6
Air
suct
ion
Num
ber
Des
crip
ition
(uni
t : m
m)
Uni
t siz
e(76
k,96
k):ø
9.52
Uni
t siz
e(76
k):ø
19.0
5U
nit s
ize(
96k)
:ø22
.2
3
2
1
4
5
6
64 70 60 122
35810
96818
58
- 72 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. Functions ....................................................................................73
2. Operation Details........................................................................74
3. Dimensions .................................................................................81
Wall Mountedd Type
- 73 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Functions
1. Functions
• Room temperature sensor. (THERMISTOR)
• Maintains the room temperature in accordance with the Setting temperature
• Indoor fan is delayed for 5 sec at the starting.
• High, Med, Low, CHAOS
• Intermittent operation of fan at low speed.
• The fan is switched to low(Cooling), med(Heating) speed.• The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.
• The fan is switched to intermittent or irregular operation• The fan speed is automatically switched from high to low speed.
• The louver can be set at the desired position or swing up and down automatically.
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Indoor Fan Speed Control
Operation indication Lamps (LED)
Signal ReceptorReceives the signals from the remote control.(Signal receiving sound: two short beeps or one long beep.)Operation Indication Lamps
On/Off : Lights up during the system operation.Sleep Mode : Lights up during Sleep Mode Auto operation.Timer : Lights up during Timer operation.Defrost Mode : Lights up during Defrost Mode or Hot Start operation.Temperature : Indicate the setting temperature.
Soft Dry Operation Mode
• Both the indoor and outdoor fan stops dur-
ing defrosting.
• The indoor fan does not rotate until the evaporator pipe temperature will be reachedat 28°C.
Sleep Mode Auto Control
Natural Air Control by CHAOS Logic
Airflow Direction Control
Defrost(Deice) control (Heating)
Hot-start Control (Heating)
Operation Details
- 74 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
2. Operation Details
DISPLAY(1) High quality LCD remote controller supplied
Operation Indicator• On while in appliance operation, off while in appliance pause
Timer(on/off) and Sleep timer Indicator• On while in timer mode (on/off) and in sleep timer mode, off when timer mode is completed or canceled
Defrost Indicator• Off except when hot start during heating mode operation or while in defrost control.
Plasma Indicator• On while in plasma mode, off while plasma mode is canceled.
Auto restart• In case the power comes on again after a power failure, Auto Restarting Operation is the function to operate
procedures automatically to the previous operating conditions.If your want to use this operation, press the Auto Restart Button.
Power(Forced Operation)• Operation starts, when this button is pressed and stops when you press the button again.
Cooling Mode Operation• When the intake air temperature reaches 0.5°C below the setting temp, the compressor and the outdoor fan
stop.
• When it reaches 0.5°C above the setting temp, they start to operate again.
Compressor ON Temp=> Setting Temp+0.5°C
Compressor OFF Temp => Setting Temp-0.5°C
• While in compressor running, operating with the airflow speed set by the remote controller. While in com-pressor not running, operating with the low airflow speed regardless of the setting.
Function of Controls
Operation Details
- 75 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Healthy Dehumidification Mode
• When the dehumidification operation input by the remote controller is received, the intake air temperature isdetected and the setting temp is automatically set according to the intake air temperature.
26°C ≤ Intake Air Temp => 25°C
24°C ≤ Intake Air Temp < 26°C => Intake Air Temp-1°C
18°C ≤ Intake Air Temp < 24°C => Intake Air Temp-0.5°C
Intake Air Temp < 18°C => 18°C
• While in compressor off, the indoor fan repeats low airflow speed and pause.
• While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidificationoperation and 4-min compressor off repeat
Compressor ON Temp. => Setting Temp+0.5°C
Compressor OFF Temp. => Setting Temp-0.5°C
• In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.
Heating Mode Operation
• When the intake air temp reaches +3°Cabove the setting temp, the compressor is turned off. When below thesetting temp, the compressor is turned on.
Thermo ON Temp. => Setting Temp. +2°C
Thermo OFF Temp. => Setting Temp. +4°C
• While in compressor on, when above 38°C , it operates with or setting airflow speed (while in sleep mode, withthe medium airflow speed).
• While in compressor off, the indoor fan is off when the indoor pipe temp is below 33°C , when above 35°C , itoperates with the low airflow speed.
• While in defrost control, both of the indoor and outdoor fans are turned off.
Defrost Control
• While in heating mode operation in order to protect outdoor unit from freezing, reversed to cooling cycle todefrost the outdoor unit.
Fuzzy Operation (Outdoor unit C/O Model)
• According to the temperature set by Fuzzy rule, when the intake air temp is 0.5°C or more below the settingtemp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor is turned on.
Compressor ON Temp => Setting Temp+0.5°C
Compressor OFF Temp => Setting Temp+0.5°C
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to theintake air temp at that time.
Operation Details
- 76 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
26°C ≤ Intake Air Temp => 25°C
24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C
22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.5°C
18°C ≤ Intake Air Temp<22°C => Intake Air Temp
Intake Air Temp<18°C => 18°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temper-ature
Fuzzy Operation (Outdoor unit H/P Model)
• When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed sincethe operation off, the operation mode is selected.
• When determining the operation mode, the compressor, the outdoor fan, and the 4 way valve are off and onlythe indoor fan is operated for 15 seconds. Then an operation mode is selected according to the intake airtemp at that moment as follows.
24°C ≤ Inatake Air Temp => Fuzzy Operation for Cooling
21°C ≤ Inatake Air Temp<24°C => Fuzzy Operation for Dehumidification
Inatake Air Temp<21°C => Fuzzy Operation for Heating
• If any of the operation modes among cooling / dehumidification / heating mode operations is carried out for 10sec or longer before Fuzzy operation, the mode before Fuzzy operation is operated.
1) Fuzzy Operation for Cooling• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more below
the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor isturned on.
Compressor ON Temp => Setting Temp+0.5°C
Compressor OFF Temp => Setting Temp+0.5°C
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to theintake air temp at that time.
26°C ≤ Intake Air Temp => 25°C
24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C
22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.5°C
18°C ≤ Intake Air Temp<22°C => Intake Air Temp
Intake Air Temp < 18°C => 18°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the temperature.
2) Fuzzy Operation for Dehumidification• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more below
the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor isturned on.
Compressor ON Temp => Setting Temp+0.5°C
Compressor OFF Temp => Setting Temp+0.5°C
Operation Details
- 77 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to theintake air temp at that time.
26°C ≤ Intake Air Temp => 25°C
24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C
22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.5°C
18°C ≤ Intake Air Temp<22°C => Intake Air Temp
Intake Air Temp < 18°C => 18°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan repeats the low airflow speed or pause as indehumidification operation.
3) Fuzzy Operation for Heating• According to the setting temperature selected by Fuzzy rule, when the intake air temp is 3°C or more above
the setting temp, the compressor is turned off. When below the setting temp, the compressor is turned on.
Compressor ON Temp => Setting Temp. +2°CCompressor OFF Temp => Setting Temp. +4°C
• At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to theintake air temp at that time.20°C ≤ Intake Air Temp => Intake Air Temp + 0.5°CIntake Air Temp < 20°C => 20°C
• When the Fuzzy key (Temperature Control key) is input after the initial setting temperature is selected, theFuzzy key value and the intake air temperature at that time are compared to select the setting temperatureautomatically according to the Fuzzy rule.
• While in Fuzzy operation, the airflow speed of the indoor fan is set to the high or the medium according to theintake air temperature and the setting temperature.
Airflow Speed Selection
• The airflow speed of the indoor fan is set to high, medium, low, or chaos by the input of the airflow speedselection key on the remote controller.
On-Timer Operation
• When the set time is reached after the time is input by the remote controller, the appliance starts to operate.
• The timer LED is on when the on-timer is input. It is off when the time set by the timer is reached.
• If the appliance is operating at the time set by the timer, the operation continues.
Off-Timer Operation
• When the set time is reached after the time is input by the remote controller, the appliance stops operating.
• The timer LED is on when the off-timer is input. It is off when the time set by the timer is reached.
• If the appliance is on pause at the time set by the timer, the pause continues.
Operation Details
- 78 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Off-Timer <=> On-Timer Operation
• When the set time is reached after the on/off time is input by the remote controller, the on/off-timer operation iscarried out according to the set time.
Sleep Timer Operation
• When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote controller while inappliance operation, the operation of the appliance stops.
• While the appliance is on pause, the sleep timer mode cannot be input.
• While in cooling mode operation, 30 min later since the start of the sleep timer, the setting temperatureincreases by 1°C After another 30 min elapse, it increases by 1°C again.
• When the sleep timer mode is input while in cooling cycle mode, the airflow speed of the indoor fan is set tothe low.
• When the sleep timer mode is input while in heating cycle mode, the airflow speed of the indoor fan is set tothe medium.
Chaos Swing Mode• By the Chaos Swing key input, the vane automatically operates with the Chaos Swing or they are fixed to the
desired direction.
Chaos Natural Wind Mode• When the Chaos Natural Wind mode is selected and then operated, the high, medium, or low speed of the air-
flow mode is operated for 2~15 sec randomly by the Chaos Simulation.”
Jet Cool Mode Operation (Outdoor unit C/O Model)• If the Jet Cool key is input at any operation mode while in appliance operation, the Jet Cool mode operates.
• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.
• In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C
• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.
• During the JET COOL function at any moment, the A/C starts to blow the cool air with side louvers closed atextremely high speed for 30 minutes setting the room temp. automatically to 18°C.
Jet Cool Mode Operation (Outdoor unit H/P Model)• While in heating mode or Fuzzy operation, the Jet Cool key cannot be input. When it is input while in the other
mode operation (cooling, dehumidification, ventilation), the Jet Cool mode is operated.”
• In the Jet Cool mode, the indoor fan is operated at super-high speed for 30 min at cooling mode operation.
• In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C
• When the sleep timer mode is input while in the Jet Cool mode operation, the Jet Cool mode has the priority.
• During the JET HEAT function at any moment, the A/C starts to blow the hot air with side louvers closed atextremely high speed for 60 minutes setting the room temp. automatically to 30°C.
Auto Restarting Operation• When the power is restored after a sudden power failure while in appliance operation, the mode before the
power failure is kept on the memory and the appliance automatically operates in the mode on the memory.
• Operation Mode that is kept on the memory
- State of Operation ON/OFF
Operation Details
- 79 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
- Operation Mode/Setting Temp/Selected Airflow Speed
- Sleep Timer Mode/Remaining Time of Sleep Timer (unit of hour)
Forced Operation • Operation procedures when the remote control can't be used.• The operation will be started if the power button is pressed.• If you want to stop operation, re-press the button.
• While in forced operation, the key input by the remote control has no effect and the buzzer sounds 10 times toindicate the forced operation.
Test operation• During the TEST OPERATION, the unit operates in cooling mode at high speed fan, regardless of room tem-
perature and resets in 18±1 minutes.• During test operation, if remote controller signal is received, the unit operates as remote controller sets.
If you want to use this operation, Press and hold ON/OFF button 3~5 seconds, then the buzzer sound 1 "beep".• If you want to stop the operation, re-press the button.
Protection of the evaporator pipe from frosting• If the indoor pipe temp is below 0°C in 7 min. after the compressor operates without any pause while in cool-
ing cycle operation mode, the compressor and the outdoor fan are turned off in order to protect the indoorevaporator pipe from frosting.
• When the indoor pipe temp is 7°C or higher after 3 min. pause of the compressor, the compressor and theoutdoor fan is turned on according to the condition of the room temperature.
Buzzer Sounding Operation• When the appliance-operation key is input by the remote control, the short "beep-beep-" sounds.• When the appliance-pause key is input by the remote control, the long "beep—" sounds.• When a key is input by the remote control while the slide switch on the main unit of the appliance is on the
forced operation position, the error sound "beep-beep-beep-beep-beep-" is made 10 times to indicate that theremote control signal cannot be received.
Heat pump ModelCooling Model
Room Temp. ≥ 24°C 21°C ≤ Room Temp. < 24°C Room Temp. < 21°C
Operating mode Cooling Cooling Healthy Dehumidification Heating
Indoor Fan Speed High High High High
Setting Temperature 22°C 22°C 23°C 24°C
Operation Details
- 80 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Air Cleaner Operation
• When an air cleaner function is selected during Air Conditioner operation- Plasma air cleaner function will be operated while in any operation mode with selecting the function.- The function is to be stopped while it is operating with selecting the function.
• When an air cleaner function is selected during operation off- The function will be only operated.
• When inlet grille of air conditioner is opened during plasma operation, High Voltage Generator(H.V.B) is to bestopped. When inlet grille of air conditioner is closed during plasma operation, High Voltage Generator(H.V.B)will be operated again.
Dimensions
- 81 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
3. Dimensions
76, S
eong
san-
dong
, Cha
ngw
on C
ity, G
yeon
gnam
,64
1-71
3, K
orea
ww
w.lg
eairc
on.c
om
CH
AS
SIS
CO
DE
: SE
Wal
l Mou
nted
AR
NU
07G
SE
*2A
RN
U09
GS
E*2
AR
NU
12G
SE
*2A
RN
U15
GS
E*2
WM
odel
AR
NU
07G
SE
*2A
RN
U09
GS
E*2
AR
NU
12G
SE
*2A
RN
U15
GS
E*2
HD
895
282
165
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grill
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ber
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crip
ition
(uni
t : m
m)
Dimensions
- 82 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
76, S
eong
san-
dong
, Cha
ngw
on C
ity, G
yeon
gnam
,64
1-71
3, K
orea
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w.lg
eairc
on.c
om
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AS
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: S5
Wal
l Mou
nted
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18G
S5*
2A
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U24
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AR
NU
18G
S5*
2A
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5*2
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1090
300
178
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com
plia
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ox.
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m)
1
2
- 83 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. Funtions ......................................................................................84
2. Operation Details........................................................................85
3. Dimensions .................................................................................88
Ceiling & Floor Ceiling Suspended
- 84 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. Function
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Indoor Fan Speed Control
Soft Dry Operation Mode
Deice (defrost) control (Heating)
Auto Restart
Hot-start Control (Heating) • The indoor fan does not rotate until the evaporator pipingtemperature reaches 25°C.
High head height Drain pump • A standard drain-head height of up to 700mm is possible.
Central Control(Optional) • It is operating individually or totally by central control function.
• Room temperature sensor. (Thermistor)
• Maintains the room temperature in accordance with the Setting Temperature.
• Indoor fan is delayed for 5 seconds at the starting.
• High, Med, Low
• Intermittent operation of fan at low speed.
• Although the air-conditioner is turned off by a power failure, it is restarted auto-matically previous operation mode after power supply.
• Both the indoor and outdoor fan stops during defrosting.• Hot start after defrost ends.
Function
- 85 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
2. Operation Details
Operation Details
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
SET TEMPERATURE +0.5°C(Thermo. ON)
SET TEMPERATURE -0.5°C(Thermo. OFF) More than More than
3 minutes 3 minutes
Selecting Selecting Selecting
fan speed fan speed fan speed
COMPRESSOR ON OFF ON OFF ON
INDOOR FAN Low Low
(1) The function of main control
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
- 86 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Operation Details
Heating Mode Operation The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Thermal
Outdoor fan
Indoor fan
4way valve
Setting Temperature(Thermal ON)
Setting Temperature +3°C
(Thermal OFF)
Indoor unitHeat-Exchangertemperature
T LT
T ST
1minMinimum
3min 1min
3min
Settingfan
spped
Settingfan
spped
Settingfan
spped
40°C
T On
T Off
ON
ON
ON
ON
LowLowLowLowLow OffOffOff
ON
OFF
OFF
Low fan during 10sec
A
A
B
C
B
Intake Air Temperature
• Compressor-off interval : - While the indoor Heat-Exchanger temperature is higher than 40°C, fan operates at low speed, when it becomes lower than 40°C fan stops. - For eluminating latent heat-loss, fan operates at low speed for 10 seconds periodically.
- To be operated "Low" except initial Hotstart operation
C
Chassis
Hotstart On T On
Hotstart Off T Off
Low temperature T LT
Setting Temperature T ST
High Static Low Static Convertible
BH BG BR
19°C 19°C 19°C 19°C 19°C 19°C 19°C 26°C 26°C
22°C 22°C 22°C 22°C 22°C 22°C 22°C 27°C 27°C
25°C 25°C 25°C 25°C 25°C 25°C 25°C 28°C 28°C
27°C 27°C 27°C 27°C 27°C 27°C 27°C 30°C 30°C
B1 B2 CE CF VE VJ
- 87 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Operation Details
Hot-Start Control
• The indoor fan does not rotate until the indoor unit Hex-Exchanger temperature reaches 30°C.
• The operation diagram is as following.
ON ON
Off Off LowLow
1 min
Hotstart On
Hotstart Off
Indoor unitHeat-Exchanger
temperature
Setting fanspeed
Setting fanspeed
ThermalOutdoor fan
Indoor fan
4way Valve ON
1 min
• Initial Hotstart On state
➀ Power Off On ➁ Operation Off On➂ Cooling operation Heating operation➃ Defrost operation
- 88 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
3. Dimensions
Dimensions
76, S
eong
san-
dong
, Cha
ngw
on C
ity, G
yeon
gnam
,64
1-71
3, K
orea
ww
w.lg
eairc
on.c
om
CH
AS
SIS
CO
DE
: VE
Cei
ling
& F
loor
AR
NU
09G
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A2
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12G
VE
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(uni
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2
1
- 89 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Dimensions
76, S
eong
san-
dong
, Cha
ngw
on C
ity, G
yeon
gnam
,64
1-71
3, K
orea
ww
w.lg
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on.c
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CH
AS
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CO
DE
: VJ
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18G
VJA
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JA2
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2. U
nit s
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be g
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(uni
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m)
- 90 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. Function ......................................................................................91
2. Operation Details........................................................................92
3. Dimensions .................................................................................95
Floor Standing Type
- 91 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. Function
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Indoor Fan Speed Control
Soft Dry Operation Mode
Deice (defrost) control (Heating)
Auto Restart
Hot-start Control (Heating) • The indoor fan does not rotate until the evaporator pipingtemperature reaches 25°C.
High head height Drain pump • A standard drain-head height of up to 700mm is possible.
Central Control(Optional) • It is operating individually or totally by central control function.
• Room temperature sensor. (Thermistor)
• Maintains the room temperature in accordance with the Setting Temperature.
• Indoor fan is delayed for 5 seconds at the starting.
• High, Med, Low
• Intermittent operation of fan at low speed.
• Although the air-conditioner is turned off by a power failure, it is restarted auto-matically previous operation mode after power supply.
• Both the indoor and outdoor fan stops during defrosting.• Hot start after defrost ends.
Function
Operation Details
- 92 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
2. Operation Details
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
SET TEMPERATURE +0.5°C(Thermo. ON)
SET TEMPERATURE -0.5°C(Thermo. OFF) More than More than
3 minutes 3 minutes
Selecting Selecting Selecting
fan speed fan speed fan speed
COMPRESSOR ON OFF ON OFF ON
INDOOR FAN Low Low
(1) The function of main control
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
Operation Details
- 93 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Heating Mode Operation The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Thermal
Outdoor fan
Indoor fan
4way valve
Setting Temperature(Thermal ON)
Setting Temperature +3°C
(Thermal OFF)
Indoor unitHeat-Exchangertemperature
T LT
T ST
1minMinimum
3min 1min
3min
Settingfan
spped
Settingfan
spped
Settingfan
spped
40°C
T On
T Off
ON
ON
ON
ON
LowLowLowLowLow OffOffOff
ON
OFF
OFF
Low fan during 10sec
A
A
B
C
B
Intake Air Temperature
• Compressor-off interval : - While the indoor Heat-Exchanger temperature is higher than 40°C, fan operates at low speed, when it becomes lower than 40°C fan stops. - For eluminating latent heat-loss, fan operates at low speed for 10 seconds periodically.
- To be operated "Low" except initial Hotstart operation
C
Chassis
Hotstart On T On
Hotstart Off T Off
Low temperature T LT
Setting Temperature T ST
High Static Low Static Convertible
BH BG BR
19°C 19°C 19°C 19°C 19°C 19°C 19°C 26°C 26°C
22°C 22°C 22°C 22°C 22°C 22°C 22°C 27°C 27°C
25°C 25°C 25°C 25°C 25°C 25°C 25°C 28°C 28°C
27°C 27°C 27°C 27°C 27°C 27°C 27°C 30°C 30°C
B1 B2 CE CF VE VJ
Operation Details
- 94 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Hot-Start Control
• The indoor fan does not rotate until the indoor unit Hex-Exchanger temperature reaches 30°C.
• The operation diagram is as following.
ON ON
Off Off LowLow
1 min
Hotstart On
Hotstart Off
Indoor unitHeat-Exchanger
temperature
Setting fanspeed
Setting fanspeed
ThermalOutdoor fan
Indoor fan
4way Valve ON
1 min
• Initial Hotstart On state
➀ Power Off On ➁ Operation Off On➂ Cooling operation Heating operation➃ Defrost operation
- 95 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Dimensions
3. Dimensions
76, S
eong
san-
dong
, Cha
ngw
on C
ity, G
yeon
gnam
,64
1-71
3, K
orea
ww
w.lg
eairc
on.c
om
CH
AS
SIS
CO
DE
: CE
Flo
or S
tand
ing
AR
NU
07G
CE
A2
AR
NU
09G
CE
A2
AR
NU
12G
CE
A2
AR
NU
15G
CE
A2
AR
NU
07G
CE
U2
AR
NU
09G
CE
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- 96 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Dimensions
76, S
eong
san-
dong
, Cha
ngw
on C
ity, G
yeon
gnam
,64
1-71
3, K
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1
2
- 97 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Part 3Trouble shooting guide
- 98 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Self-diagnosis function .....................................................................99
Trouble shooting guide
- 99 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
Self-diagnosis function
Self-diagnosis functionSelf-Diagnosis Function
Error Indicator• This function indicates types of failure in self-diagnosis and occurrence of failure for air condition.• Error mark is displayed on display window of indoor units and wired remote controller, and 7-segment LED of
outdoor unit control board as shown in the table.• If more than two troubles occur simultaneously, lower number of error code is first displayed.• After error occurrence, if error is released, error LED is also released simultaneously.
Error Display1st,2nd LED of 7-segment indicates error number, 3rd LED indicates unit number.Ex) 211 : No.21 error of master unit
213 : No.21 error of slave2011 051 : No.105 error of master unit
Display Title Cause of Error
Air temperature sensor of indoor unit is open or short
Inlet pipe temperature sensor of indoor unit is open or short
Failing to receive wired remote controller signal in indoor unit PCB
Malfunction of drain pump
Failing to receive outdoor unit signal in indoor unit PCB
Outlet pipe temperature sensor of indoor unit is open or short
Operation mode between indoor unit and outdoor unit is different
In case when the serial number marked on EEPROM of Indoor unit is 0 or FFFFFF
Disconnecting the fan motor connector/Failure of indoor fan motorlock
When the addressing signal doesn't respond for 3mins. suddenly,while the indoor unit gets the calling signal from the outdoor unit,
Ind
oo
r u
nit
rel
ated
err
or
Air temperature sensor of indoor unit
Inlet pipe temperature sensor of indoor unit
Transmission error : wired remote controller↔ indoor unitDrain pump
Transmission error : outdoor unit ↔ indoorunit
Outlet pipe temperature sensor of indoor unit
Different operation mode
Serial No.
Poor fan motor operation
Transmission error: indoor unit main PCBof outdoor.
0 1 -0 2 -
0 3 -
0 4 -
0 5 -
0 6 -0 7 -
0 9 -
1 0 -
1 1 -
Self-diagnosis function
- 100 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
01 Indoor unit air sensor error
02 Indoor unit pipe inlet sensor error
06 Indoor unit pipe outlet sensor error
ErrorNo.
Error Type Error Point Main Reasons
Indoor unit sensor isopen/short
1. Indoor unit PCB wrong connection
2. Indoor unit PCB failure
3. Sensor problem (main reason)
** In case the value is more than 100kΩ (open) or less than 100Ω (short), Error occurs
Refer: Resistance value maybe change according to temperature of temp sensor,It shows according to criteria of current temperature(±5% margin) NormalAir temp sensor: 10°C = 20.7kΩ : 25°C= 10kΩ : 50°C= 3.4kΩPipe temp sensor: 10°C = 10kΩ : 25°C= 5kΩ : 50°C= 1.8kΩ
Error diagnosis and countermeasure flow chart
Is sensor properly connected to PCB?
Is the resistance value of sensor normal?*
Connect properly to PCB
Change the sensor
Change the PCB
Yes
Yes
No
No
CN-ROOM : Indoor air temp sensor
CN-PIPE2 : Pipe outlet temp sensor
CN-PIPE1 : Pipe inlet temp sensor
Measure the resistance of outlet pipe temp sensor.
Self-diagnosis function
- 101 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
* If there is no remote controller to replace : Use another unit’s remote controller doing well
** Check cable : Contact failure of connected portion or extension of cable are main causeCheck any surrounded noise ( check the distance with main power cable) make safe distance from the devices generate electromagnetic wave
*** After replacing indoor unit PCB, do Auto Addressing & input unit’s address if connected to central controller.(All the indoor units connected should be turned on before Auto Addressing
03 No transmission between cabledremote controller & indoor unit
ErrorNo.
Error Type Error Point Main Reasons
The remote controllerdid not receive the sig-nal from indoor unitduring specific time
1. Remote controller fault
2. Indoor unit PCB fault
3. Connector fault, Wrong connection
4. transmission cable problem
Error diagnosis and countermeasure flow chart
CN-REMO : Remote controller connection
The PCB can differ from model to model.Check from the right source.
Checking transmission cable connection status
Does the error happens again if the remote
controller is replaced?*
Does the error occurred when the cable of remote
controller is replaced?
Replace cabled remote controller
Check connection & transmission cable **
Replace indoor unit PCB ***
Yes
Yes
No
No
Self-diagnosis function
- 102 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. Drain pump/float switch fault
04 Drain pump error2. Improper drain pipe location, clog-
ging of drain pipe
3. Indoor unit PCB fault
ErrorNo.
Error Type Error Point Main Reasons
Error diagnosis and countermeasure flow chart
Float switch is open due torising of condensate waterlevel because of drainpump fault or drain pipeclogging
Is the drain pan filled half with condensate water? (half level of
float switch)*
Is drain pump working?(Sound/drain noise/
contact etc.)
Replace float switch
Replace Indoor PCB or reconnect the connector
Yes
Yes
No
No Is Float switch short On measuring its
resistance?
No
Yes
Drain pump blocked byforeign particles?
Yes
No
In indoor unit PCB Does the terminal voltage
for drain pump has 220V output?**
Replace indoor unit PCB
Replace Drain Pump
Yes
Checkthedrainheadheightandslope***
Remove it & clean the pump
float
Checkingfloatswitch
(HighpositionOpen)
No
Condensatewater
(Lowpositionshort0ohm)
* If the float goes up higher than a half of float switch then the circuit is open & the unit is stopped automatically.
Self-diagnosis function
- 103 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
*** Indoor PCB drain pump connector
(Check input of 220V)
(Marked as CN-DPUMP)
float
A:Point to check rotating
Float switch Housing (CN-FLOAT)
Float switch connector
[***] Standard of drain pipe head height / slope
MAX 450
Self-diagnosis function
- 104 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
1. Auto addressing is not done2. transmission cable is not connected3. Short circuit of transmission cable4. Indoor unit transmission circuit fault
05 5. Outdoor unit transmission circuit fault 6. Not enough distance between power and trans-
mission cable?
ErrorNo.
Error Type Error Point Main Reasons
No signal transmissionbetween indoor & outdoorunits.
Indoor & Outdoor unittransmission error
Does all the IDUs show same error code CH05?
Is outdoor PCB LEDblinking?
Yes
Yes
No
Is main circuit breaker off?No
Check the main power supply at the ODU
terminal block?
Improper connection of power supply cable
Main power supply problem
Yes
No
Yes
No
Outdoor PCB faultReplace after checking
Re connect transmission cableNo
Yes
Indoor PCB faultReplace after checking
* (Note1) Transmission from IDU is normal if voltage fluctuation(-9V ~ +9V) exists when checking DC voltage of communication terminal between IDU and ODU
Is total number of indoor units connected displayed
after auto addressing?
No
END
* If the DC voltage between transmission terminal A, B of indoor unit is fluctuate within (-9V~+9V) then transmission from outdoor unit is normal
Check the insulation of inverter/ constant compressor and replace if required
Check the capacity of main circuit breaker and replace if required
If all ok,Turn on main circuit breaker
Replace outdoor PCB afterchecking
Replace TRANS after checking
Replace the PCB of indoor unitdisplayed error
Re-connect after check thetransmission cable of indoorunit displayed error**
Check if the transmission cable is properly connected to indoor / outdoor terminal block?*
Error diagnosis and countermeasure flow chart
Self-diagnosis function
- 105 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
06Refer to CH02
ErrorNo.
Error Type Error Point Main Reasons
Indoor unit outlet pipetemperature sensor openor short
Indoor unit outlet pipetemperature sensorerror
071. Indoor units are in different mode2. PCB fault3. cabled remote controller fault Checking ch07 methodIDU doesn’t operate as Operation mode is flickering at IDU wired remote controller and IDU display window.
ErrorNo.
Error Type Error Point Main Reasons
The Indoor units startedlater are operated in dif-ferent mode from earlierone.
All Indoor units are notrunning in same mode
Error diagnosis and countermeasure flow chart
* Check mode selection setting of wired remote controller.
** Outdoor main PCB dip switch no.5 (Cooling) or no.6 (heating) is in On, different mode operation error
may occur because the operation mode is fixed by dip switch setting.
Dip switch Setting
*** Dissolution method CH07 with remote controller
1) Error removal method : Turn off remote controller by pressing the On/Off button on the cabled remote controller. The error code will be removed automatically after few seconds.With cableless remote controller: Turn off indoor unit, and then turn on by changing the operationmode. The error will disappear.
Is operation mode of outdoor & Indoor units
same?
Adjust outdoor main PCBdip switch setting *
Yes
No
END
Does error code disappear
after set operation mode same?**
Replace Indoor PCB***No
Yes
1 2 3 4 5 6 7
ON
1 2 3 4 5 6 7
ON
1 2 3 4 5 6 7 8 9 10 11 12 13 14
1 2 3 4 5 6 7
ON
1 2 3 4 5 6 7
ON
1 2 3 4 5 6 7 8 9 10 11 12 13 14
Self-diagnosis function
- 106 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
091. Error developed in transmission between the
micro- processor and the EEPROM on the sur-face of the PCB.
2. ERROR due to the EEPROM damage
ErrorNo.
Error Type Error Point Main Reasons
Indoor unit EEPROMerror
Error diagnosis and countermeasure flow chart
**** After replacing the indoor unit PCB, make sure to be done to do Auto addressing and input the address of central control
***** If ODU Dry Contact function is set , different mode operation error may be occurred because the operation mode is fixed.
- Replace the indoor unit PCB, and then make sure to perform Auto addressing and input the address of central control
Self-diagnosis function
- 107 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
10Indoor unit BLDC fan motorfailure
ErrorNo.
Error Type Error Point Main Reasons
Indoor BLDC fan motorfeedback signal is absent(for 50 sec.)
1. Motor connector connection fault2. Indoor PCB fault3. Motor fault
Error diagnosis and countermeasure flow chart
Is connector connection proper?
Yes
No Connect properly
Is fan motor normal?*
Replace indoor unit fan motor
* It is normal when check hall sensor of indoor fan motor as shown below
Yes
No
k
Replace indoor unit PCB **
<Checking connection state of fan motor connector>
1 4 5 6 7
1
5
6
7
4
4
4
4
Each termainl with the tester
Tester
TH chassis
∞ ∞
∞ ∞hundreds kΩ hundreds kΩ
hundreds kΩ hundreds kΩ
+ - TD chassis
Normal resistance(±10%)
** Replace the indoor unit PCB, and then make sure to do Auto addressing and input the address of central control (Notice: The connection of motor connector to PCB should be done under no power supplying to PCB)
Self-diagnosis function
- 108 -Copyright ©2008 LG Electronics. Inc. All right reserved.Only for training and service purposes LGE Internal Use Only
11Indoor unit transmission error
ErrorNo.
Error Type Error Point Main Reasons
Indoor unit doesn’t get sig-nal from ODU for 3 minutescontinuously
1. Indoor 485 transmission PCB fault
2. After PCB replacing, auto addressingwas not done
Error diagnosis and countermeasure flow chart
Yes
No After Auto addressing, error code disappears?
Replace indoor unit 485 transmission PCB
No After ODU main PCBreset, error code
disappears?
END
Yes