Elba | R410A | Troubleshooting guide | Elba R410A Troubleshooting guide

Elba R410A Troubleshooting guide
Internal Use Only
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Universal System Air Conditioner
SVC MANUAL(Exploded View)
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.
TABLE OF CONTENTS
Safety Precautions ...................................................................................................3
I. Indoor Units
Introduction....................................................................................................................................8
Ceiling Cassette 4-way................................................................................................................10
Ceiling Suspended ......................................................................................................................28
Ceiling concealed Duct................................................................................................................44
II. Outdoor Units
Introduction..................................................................................................................................65
MPS Inverter Single A(AUUW-C/R410A) ....................................................................................67
III. Troubleshooting Guide
Self-diagnosis Function ...............................................................................................................75
Cycle Troubleshooting Guide.......................................................................................................81
Electronic Parts Troubleshooting .................................................................................................82
General Information.....................................................................................................................87
IV. Electronic Control Device
Ceiling Cassette Type................................................................................................................107
Ceiling Duct Type ......................................................................................................................108
Ceiling Suspended ....................................................................................................................109
Outdoor Unit ..............................................................................................................................110
V. Schematic Diagram
Ceiling Cassette Type................................................................................................................113
Ceiling Duct Type ......................................................................................................................114
Ceiling Suspended ....................................................................................................................115
VI. Functional Description
Ceiling Cassette Type................................................................................................................118
Ceiling Duct Type ......................................................................................................................120
Ceiling & Floor...........................................................................................................................126
Outdoor Units
VII. Explode View and Replacement Parts List
Indoor Units ...............................................................................................................................139
Outdoor Units ............................................................................................................................148
Panel Assembly, Front ...............................................................................................................152
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
-2-
LGE Internal Use Only
I. Indoor Units
Introduction.......................................................................................................8
Ceiling Cassette 4-way...................................................................................10
Ceiling & Floor ................................................................................................28
Ceiling Concealed Duct..................................................................................44
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
-7-
LGE Internal Use Only
Introduction
Introduction
• Models List
Model name
Nominal capacity[(Btu/h(kW)]
Indoor Unit
Type
Refrigerant
Chassis
name
Ceiling Cassette
4-Way
R410A
TD
36,000
(10.6)
42,000
(12.3)
48,000
(14.1)
60,000
(17.6)
ATNH366DLFC
ATNH426DLFC
ATNH486DLFC
ATNH606DLFC
Power
Supply
1Ø, 220Ceiling Suspended
Ceiling Concealed
Duct
R410A
R410A
VK
VL
BG
BR
AVNH366KLA1
AVNH366KLAC
ABNH366GLAC
-
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
-
-
-
AVNH426LLFC
ABNH426RLAC
AVNH486LLFC
ABNH486RLAC
AVNH606LLFC
ABNH606RLAC
-8-
240V,
50Hz
LGE Internal Use Only
Introduction
• Model Number Nomenclature
Indoor unit
A T N H 4 8 6 D L F C
Serial Number
Functions
A : Basic
B : Low Ambient
C : Plasma Filter
E : Elevation Grille
F : Elevation Grille + Plasma Filter
H : Plasma Filter + Low Ambient
L : Nano Plasma
M : Nano Plasma + Elevation Grille
Look
L : Basic
Chassis Name
Electrical Ratings
6:1Ø,220V~240V,50Hz
8:3Ø,380V~415V,50Hz
Nominal Cooling Capacity in Btu/h
Ex) 18 -> 18,000 Btu/h, 48 -> 48,000 Btu/h
Model Type
C : Cooling Only
H : Heat Pump
Indicates that this is a indoor unit for R410A
ATN : Ceiling cassette type indoor unit
ABN : Ceiling concealed duct type indoor unit
AVN : Convertible type indoor unit
Decoration panel(For Ceiling Cassette Models)
P T - H E C
Functions
A : Basic
E : Elevation Grille
C : Plasma Air Purifier
F : Elevation Grille + Plasma Air Purifier
Indoor Unit Chassis
D : D Chassis
E : E Chassis
F : F Chassis
Model Type
C : Cooling Only
H : Heat Pump
Decoration Panel of Ceiling Cassette Type Indoor Unit
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
-9-
LGE Internal Use Only
Ceiling Cassette 4-way
Ceiling Cassette 4-way
Ceiling Cassette 4-way
(R410A·Indoor Units)
ATNH-DL
Contents
1. Features & Benefits ..............................................................................11
2. List of Functions....................................................................................15
3. Specifications........................................................................................16
4. Dimensional Drawings ..........................................................................17
5. Wiring Diagrams ...................................................................................18
6. Piping Diagrams....................................................................................19
7. Operating Instructions...........................................................................20
8. Installation.............................................................................................22
9. Accessories ..........................................................................................27
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 10 -
LGE Internal Use Only
Ceiling Cassette 4-way
1. Features & Benefits
■ Convenience
• Auto elevation grille(Accessory)
• Tele control(Optional)
• LCD wired remote control
• Group control
• Central control(Accessory)
• Weekly progam
■ Cleanness
• Plasma air purifying system
• Hygienic and easy to clean filter
■ Easy Installation
• Compact design & easy installation
• High ceiling corresponding operation
• High head drain pump(700mm)
■ Comfort & Reliability
• Low noise with 3-dimensional turbo fan
• 2-Thermistor control(Main body & Remote control)
• Zero stanby power consumption
• Jet cool
• Swirl swing
• Space control
Compact Design and Easy Installation
Only about 269mm height in the ceiling is sufficient for
installation space.
A smaller size than a Textile(600X600) is very convenient for installation.
(18k Btu/h model)
Low Noise with 3-dimensional
turbo fan
The most advanced low-noise design.
The adoption of turbo-fan and round type heat
exchanger provides the quietest operation.
Hygienic and Easy-to-Clean Filter
Washable and anti bacteria filter is adopted.
It is easy to open grille and replace clean filter.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 11 -
LGE Internal Use Only
Ceiling Cassette 4-way
Plasma Air Purifying System
The PLASMA Air Purifying Function not only removes microscopic contaminants and dust, but also removes house
mites, pollen, and pet fur helps to prevent allergic diseases
like asthma.
Dust electrode discharge
Dust particles
Ionizer
Photo-Catalyst Coated Mesh
+4.8KV discharge
+
+
+
Polluted Air
Purified fresh Air
+
Generating plasma
Odour
Odour molecule
High Head Drain Pump(700mm)
Built-in Drain Pump drains out water automatically.
A standard drain-head height of up to 700 mm is possible, creating the ideal solution for perfect water drainage.
Pipe fixture
Slope 1/50~1/100
Maximum 700mm
Flexible drain hose
Hard Tube(ex.PVC)
Drain Pump
Drain Pan
Ceiling Board
High-Ceiling Corresponding Operation
According to the height of the installation, it provides variability of indoor fan motor rpm. If the height of installation is
low then you can adjust low rpm of indoor fan motor. On
the other hand if the height of the installation is high you
can adjust high rpm of indoor fan motor. Selection of
speed can be done by slide switch at the back of the LCD
wired remote.
Switch selection
Ceiling Height
Low Ceiling
Less than 2.7m
Standard
2.7~3.3m
High Ceiling
Over than 3.3m
Tele Control (Accessory)
- It provides you ease of control. Air conditioner
can be switched on/off by the telephone. It
saves time & energy.
ON
OFF ON
In Advance by Telephone
Before Coming Home...
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 12 -
OFF
In case of Going out
Without Turning off the
Air Conditioner...
LGE Internal Use Only
Ceiling Cassette 4-way
Child Lock Function
-It prevents the children or others from tampering
with the control buttons. Unit can be controlled by
the wireless remote controller. This can be easily set
by pressing timer key & Min key simultaneously.
After child lock is set, pressing any key will display
CL on the LCD for 3 seconds and all the keys will be
ineffective.
CHILD LOCK
-Display
Auto Elevation Grille(Accessory)
-Auto Elevation Grille is automatically down to height
of max. 3.1 m. So it enables to install the Indoor unit
at high ceiling space. And Auto Elevation Grille
makes you cleaning the filter easily.
Swirl Swing
4- Open(Conventional)
Comparison of Floor
Temp. Distribution(20°C)
Swirl Swing(New)
- It is the function for comfort cooling/heating operation.
- The diagonal two louvers are opened the
more larger than the other louvers.
After one minute, it is opposite.
2.4%
100% Improved
4.8%
Comparison of Air Flow Types
4- Open(Conventional)
Swirl Swing(New)
Vane 1 Open
Vane 1 Close
Vane 2 Open
Vane 2 Open
Vane 3 Open
Vane 3 Close
Vane 4 Open
Vane 4 Open
Close
Time
Vane 2
Close
Open
Close
Open
Close
Open
Open
Close
Open
Close
Open
71
Close
Open
Open
Close
Vane 3
Vane 1
Time
Vane 4
Space Control
Vanes angle can be controlled by pair, considering its
installation environment.
- For example direct drafts can be annoying, leading
to discomfort and reduced productivity vane control
helps to eliminate this problem.
- Easily controlled by wired remote control.
- Air Flow can be controlled easily regarding any
space environment.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 13 -
LGE Internal Use Only
Ceiling Cassette 4-way
Weekly Program
- On/Off schedule of operation for a period of ONE
week.
No need to turn the unit On/OFF manually during
working days. On/Off time is scheduled in micom of
the wired remote control.
Operation Time Table (Example)
Setting
Mon
Temp.
25°C 25°C
Tue
Wed
Thu
25°C 25°C
Fri
Sat
Sun
25°C
On
09:00 08:00 09:00 08:00 09:00
Off
12:00 17:00 12:00 12:00 12:00
OFF
10mm
10mm
Auto Restart Operation
- Whenever there is electricity failure to the unit, and after resumption of the power, unit will start in the same
mode prior to the power failure. Memorized condition are on / off condition, operating mode (cooling/heating),
set temperature and fan speed.The unit will memorize the above conditions and start with same memorized
condition.
Two Thermistor Control
- There may be a significant difference between the temperature taken at the installed product and indoor temperature. Two thermistor control provides option to control temperature by referring any of the two temperatures. With the help of the slide switch at the back of the LCD wired remote controller, selection of the desired
thermistor for controlling the unit can be done. One thermistor is in the Indoor unit & the other one is in the
LCD wired remote.
1
2
........
16
Group Control
- It enables to control as much as 16 units with the
help of one wired remote controller. All the units will
follow same setting of temperature & other sub functions.
........
Central Control(Accessory)
- It enables to control 16 x 8 = 128 units with the help
of 8 controllers. All units can be put on and off from
one Central Room.For Setting Temperature, Fan
Speed and other sub functions, access the respective LCD wired remote controller of each unit.
❈ Sub PI485(with wire assembly) should be purchased as optional.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Main
PCB
Controller
#1
- 14 -
M
1
M
2
M
16
M
17
M
18
M
128
Sub
1
Sub
2
Sub
16
Sub
17
Sub
18
Sub
128
Controller
#2
Controller
#8
LGE Internal Use Only
Ceiling Cassette 4-way
2. List of Functions
Category
Air flow
Air purifying
Installation
Reliability
Convenience
Individual control
CAC network function
Special function kit
Others
Function
Air supply outlet
Airflow direction control (left & right)
Airflow direction control (up & down)
Auto swing (left & right)
Auto swing (up & down)
Airflow steps(Fan / Cool / Heat)
CHAOS swing
CHAOS wind (Auto wind)
Jet cool (Power wind)
Swirl wind
Deodorizing filter
Plasma air purifier
Prefilter(Washable / Anti-fungus)
Drain pump
E.S.P. control
Electric heater (Operation)
High ceiling operation
Hot start
Self diagnosis
Soft dry operation
Auto changeover
Auto cleaning
Auto operation(Artificial intelligence)
Auto restart operation
Child lock
Forced operation
Group control
Sleep mode
Timer (On/Off)
Timer (weekly)
Two thermistor control
Standard wired remote controller
Deluxe wired remote controller
Simple wired remote controller
Wired remote controller(for hotel use)
Wireless remote controller(simple)
Wireless LCD remote controller
General central control(Non LGAP)
Dry contact
Simple central control(LGAP)
PDI(Power Distribution Indicator)
PI485
CTIE
Zone control
Thermistor
ATNH366DLFC
[UT36 NDC]
4
Auto
X
O
3/4/3
X
O
O
O
O
O
O
O
O
O
O
X
X
O
O
O
O
X
O
O
O
O
X
X
X
AHWRHD
X
X
PQDSB
O
PQNUD1S00
PMNFP14A0
X
X
AQTTA
ATNH426DLFC
[UT42 NDC]
4
Auto
X
O
3/4/3
X
O
O
O
O
O
O
O
O
O
O
X
X
O
O
O
O
X
O
O
O
O
X
X
X
AHWRHD
X
X
PQDSB
O
PQNUD1S00
PMNFP14A0
X
X
AQTTA
ATNH486DLFC
[UT48 NDC]
4
Auto
X
O
3/4/3
ATNH606DLFC
[UT60 NDC]
4
Auto
X
O
3/4/3
O
O
O
O
O
O
O
O
O
O
X
X
O
O
O
O
X
O
O
O
O
X
X
X
AHWRHD
X
X
PQDSB
O
PQNUD1S00
PMNFP14A0
X
X
AQTTA
O
O
O
O
O
O
O
O
O
O
X
X
O
O
O
O
X
O
O
O
O
X
X
X
AHWRHD
X
X
PQDSB
O
PQNUD1S00
PMNFP14A0
X
X
AQTTA
Note: Group control is not available for 4 way cassette which is connected with synchro models.
Sleep mode is available only in case of using wireless remote controller.
• O: Applied, • X: Not applied, • - : No relation,
• Option: Model name & price are different according to options, and assembled in factory with main unit.
• Accessory: Installed at field, ordered and purchased separately by the corresponding model name, supplied with separate package.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 15 -
LGE Internal Use Only
Ceiling Cassette 4-way
3. Specifications
Indoor unit type
Ceilling Cassette - 4way
ATNH366DLFC
[UT36 NDC]
Model
Power Supply
Ø/V/Hz
Cooling Capacity
ATNH426DLFC
[UT42 NDC]
ATNH486DLFC
[UT48 NDC]
ATNH606DLFC
[UT60 NDC]
1 / 220 ~240 / 50 1 / 220 ~240 / 50 1 / 220 ~240 / 50 1 / 220 ~240 / 50
kW
9.5
11.9
12.9
14.2
Btu/h
32,500
40,500
44,000
48,500
Heating Capacity
kW
10.8
13.3
14.5
15.9
Btu/h
37,000
45,500
49,500
54,500
Current
Nominal running current
0.76
1.2
1.5
1.8
Fan
Motor Type
A
Induction
Induction
Induction
Induction
Fan Type
Turbo Fan
Turbo Fan
Turbo Fan
Turbo Fan
52.5*1
55*1
58.5*1
107*1
30 / 28 / 26
34 / 32 / 30
Motor Output x Number of Unit
Air Flow Rate
cmm
25 / 23 / 21
29 / 26 / 23
(H/M/L)
cfm
883 / 812 / 742
1023 / 918 / 812
Capacitor
µF/Vac
Drive
Coil
Row x Column x FPI
Dimensions
Body
mm
4/440
6/400
6/400
6/400
Direct Drive
Direct Drive
Direct Drive
Direct Drive
2R x 12C x 21
2R x 12C x 21
2R x 12C x 21
2R x 12C x 21
mm(inch)
840*288*840(33.1*11.3*33.1) 840*288*840(33.1*11.3*33.1) 840*288*840(33.1*11.3*33.1) 840*288*840(33.1*11.3*33.1)
mm
950*30*950(37.4*1.2 *37.4) 950*30*950(37.4*1.2 *37.4) 950*30*950(37.4*1.2 *37.4) 950*30*950(37.4*1.2 *37.4)
(WxHxD)
Decorative Panel
Weight
Body
kg(lbs)
Decorative Panel
kg(lbs)
Air Filter
Sound Level (H/M/L)
1059 /988 / 918 1200 / 1130 / 1059
32(70.4)
32(70.4)
32(70.4)
32(70.4)
5(11)
5(11)
5(11)
5(11)
Long life filter
Long life filter
Long life filter
Long life filter
dB(A)+3
40 / 38 / 36
42 / 40 / 38
43 / 41 / 39
50 / 47 / 43
Piping
Liquid
mm(inch)
6.35 (1/4)
9.52 (3/8)
9.52 (3/8)
9.52 (3/8)
Connections
Gas
mm(inch)
15.88(5/8)
19.05(3/4)
19.05(3/4)
19.05(3/4)
mm
32 / 25
32 / 25
32 / 25
32 / 25
l/h
4
4.5
5.5
6.5
Drain(OD/ID)
Dehumidification Rate
Safety devices
Fuse, Thermal protector for fan motor
Temperature Sensor
Referigerant
Referigerant Control
Connectable outdoor unit
Power and transmission interunit cable
No.x mm2
Thermistor
Thermistor
Thermistor
Thermistor
R-410A
R-410A
R-410A
R-410A
LEV
LEV
LEV
LEV
Single A
Single A
Single A
Single A
4*0.75
4*0.75
4*0.75
4*0.75
Note :
1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 27°C(80.6°F) DB /19°C(66.2°F) WB
- Outdoor Temperature 35°C(95°F) DB /24°C(75.2°F) WB
Heating: - Indoor Temperature 20°C(68°F) DB / 15°C(59°F) WB
- Outdoor Temperature 7°C(44.6°F) DB / 6°C(42.8°F) WB
Piping Length - Interconnecting Piping Length 7.5m
- Level Difference of Zero.
2. Cooling/heating capacity of indoor unit can be different when it is connected to other type outdoor.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 16 -
Conversion Formula
kW = Btu/h × 0.0002931
kcal/h = Btu/h × 0.252
CFM = CMM × 35.3
LGE Internal Use Only
Ceiling Cassette 4-way
4. Dimensional Drawings
ATNH-DL
875 (Ceiling opening)
785(Hanging bolt)
288
950
950
840 Unit size
840 Unit size
875 (Ceiling opening)
45
101.5 672 (Hanging bolt) 101.5
45
Unit:mm
950
840
5
785
840
950
678
4
40
6
1
210.5
52 180
110
90
110
90
140
30
290
30
2
3
(unit : mm)
Number
1
2
3
4
5
6
Name
Liquid pipe connection
Gas pipe connection
Drain pipe connection
Power supply connection
Air discharge grille
Air suction grille
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Descripition
36k:ø6.35, 42/48/60k: ø9.52 flare
36k:ø15.88, 42/48/60k: ø19.05flare
- 17 -
LGE Internal Use Only
Ceiling Cassette 4-way
5. Wiring Diagrams
CONNECTOR NUMBER
LOCATION
CN-POWER
AC POWER SUPPLY
CN-MOTOR
BLDC FAN MOTOR OUTPUT
CN-D/PUMP
DRAIN PUMP OUTPUT
CN-DISP
DISPLAY
CN-FLOAT
FLOAT SWITCH INPUT
CN-PTC
PTC HEATER INUT
CN-REMO
REMOTE CONTROL
CN-GRILL
GRILL CONTROL
CN-CC
CENTRAL CONTROL
CN-PIPE2
DISCHARGE PIPE SENSOR
CN-ROOM
ROOM SENSOR
CN-PIPE1
PIPE SENSOR
CN-HVB
AIR CLEANER
CN-UD1
STEP MOTOR
CN-UD2
STEP MOTOR
CN-LR1
STEP MOTOR
CN-LR2
STEP MOTOR
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 18 -
LGE Internal Use Only
Ceiling Cassette 4-way
6. Piping Diagrams
:Cooling
:Heating
Heat Exchanger
Turbo Fan
lndoor unit
: Thermistor
Refrigerant pipe connection port diameter
[unit: mm(inch)]
Model
Gas
Liquid
ATNH366DLFC
15.88(5/8)
6.35(1/4)
19.05(3/4)
9.52(3/8)
ATNH426DLFC
ATNH486DLFC
ATNH606DLFC
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 19 -
LGE Internal Use Only
Ceiling Cassette 4-way
7. Operating Instructions
■ Name and Function of Remote Controller
AUTO SWING
OPERATION
SET TEMP
Room Temp
Operation unit
03
SUB FUNCTION
HI
MED
LO
AUTO Heater Preheat
JET Defrost Humidify
Filter Out door
ZONE
1 2 3 4
Time
Timer
On Off
Set no. Time 01
FAN SPEED
Program set
05
07
09
11
13
15
17
19
21
23
6
3
17
10
11
12
13
14
15
Heat Pump Model
1
2
Timer
Cancel
Program
Week
5
Holiday
4
Plasma
7
8
9
Set/Clr
Hour
Min
Cooling Model
RESET
16
18
1. Operation display
Displays the operation conditions.
9. Plasma Air Clean Button (optional)
2. On/Off Button
Operation starts when this button is pressed, and
stops when the button is pressed again.
10. Timer Cancel Button
Used to cancel the timer.
11. Timer Set Button
Used to set the timer when the desired time is
obtained.
3. Set Temperature Button
Used to set the temperature when the desired temperature is obtained.
4. FAN Operation Button
Used to circulate room air without cooling or heating.
5. Fan Speed (Jet Cool Button: 4 way)
Used to set the desired fan speed or select Jet cool
mode.
6. Operation Mode Selection Button
Used to select the operation mode.
• Auto Operation Mode
• Cooling Operation Mode
• Soft Dry Operation Mode
• Heating Operation Mode(except cooling model)
7. Auto Swing Button
Used to swing up and down.
8. Room Temperature Checking Button
Used to check the room temperature.
12. Week Button
Used to set a day of the week.
13. Program Button
Used to set the weekly timer.
14. Holiday Button
Used to set a holiday of the week.
15. Time Set Button
Used to set the time of the day and change the time
in the weekly timer Function.
16. Set and Clear Button
Used to set and clear the weekly timer.
17. Swirl Button (4 way)
Used to select swirl mode.
Jet Cool Button (1 way)
18. Reset Button
Used to set the current time and clear the setting
time.
❈ Display temperature can be different from actual room temperature if the remote controller is installed
at the place where sun-rays are falling directly or the place nearby heat source.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 20 -
LGE Internal Use Only
Ceiling Cassette 4-way
■ Wireless Remote Controller (optional)
This air-conditioner is equipped with wired remote controller basically. But if you want to be available with wireless remote
controller, you pay for it.
1. START/STOP BUTTON
Operation starts when this button is pressed and
stops when the button is pressed again.
Signal transmitter
2. OPERATION MODE SELECTION BUTTON
Used to select the operation mode.
3. ROOM TEMPERATURE
SETTING BUTTONS
Used to select the room temperature.
4. INDOOR FAN SPEED SELECTOR
Used to select fan speed in four steps
low, medium, high and CHAOS.
5.
JET COOL
5
1
Used
to start or stop the speed cooling/heating.
6
(Speed cooling/heating operates super high fan
3
speed.)
6. CHAOS SWING BUTTON
4
Used to stop or start louver movement and set the
10
2
desired up/down airflow direction.
CANCEL
9
7
7. ON/OFF TIMER BUTTONS
SET
ON
OFF
AUTO CLEAN
11
Used to set the time of starting and stopping opera12
tion.
8
8. TIME SETTING BUTTONS
13
Used to adjust the time.
15
9. TIMER SET/CANCEL BUTTON
14
Used to set the timer when the desired time is
obtained and to cancel the Timer operation.
10. SLEEP MODE AUTO BUTTON
Flip-up door
Used to set Sleep Mode Auto operation.
(opened)
11. AIR CIRCULATION BUTTON
Used to circulate the room air without cooling or
heating.
12. ROOM TEMPERATURE CHECKING BUTTON
Used to check the room temperature.
13. PLASMA(OPTIONAL)
Used to start or stop the plasma-purification function.
❈ The wireless remote controller do not operate the swirl mode.
14. RESET BUTTON
Initialize remote controller.
15. 2nd F Button
Used prior to using modes printed in blue at the
bottom of buttons.
CAUTION:of handling the Remote Controller
• Aim at the signal receiver on the wired remote controller so as to operate.
• The remote control signal can be received at a distance of up to about 7m.
• Be sure that there are no obstructions between the remote controller and the signal receptor.
• Do not drop or throw the remote controller.
• Do not place the remote controller in a location exposed to direct sunlight, or near the heating unit, or any other
heat source.
• Block a strong light over the signal receptor with a curtain or etc. so as to prevent the abnormal operation. (ex:electronic quick start, ELBA, inverter type fluorescent lamp)
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 21 -
LGE Internal Use Only
Ceiling Cassette 4-way
8. Installation
• Please read this instruction sheet completely before installing the product.
• When the power cord is damaged, replacement work shall be performed by authorized personnel only.
• Installation work must be performed in accordance with the national wiring standards by authorized personnel only.
Anti-bacteria filter
Air
Intake
Air Outlet
Required Parts
Required Tools
• Connecting cable
• Pipes: Gas side
Liquid side
• Hanging Bolt
(W 3/8 or M10 length 650mm)
• Insulated drain hose
• Level
• Screw driver
• Electric drill
• Hole core drill (ø70mm)
• Flaring Tools set
• Torque Wrenches
• Hexagonal Wrench (4mm, 5mm)
• Gas-leak detector
• Owner’s Manual
• Additional Drain hose
(Inner Diameter ...........................32mm)
• Thermometer
Ceiling Board
50 or
more
30 or less
50 or
more
Above 250
400 or less
Ceiling
Ceiling Board
100
or more
• There should not be any heat source or steam near the
unit.
• There should not be any obstacles to the air circulation.
• There should be provision of easy condensate drain.
• Taking into accounting the noise prevention criteria,
spot the installation location.
• Do not install the unit near the door way.
• Keep proper distances, of the unit, from ceiling, fence,
floor, walls and other obstacles as shown in figure.
• The indoor unit must have the maintenance space.
30 or more
8.1 Selection of the best location
Unit:cm
Floor
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 22 -
LGE Internal Use Only
Ceiling Cassette 4-way
8.2 Ceiling opening dimensions and hanging bolt location
• The dimensions of the paper pattern for installation are the same as those of the ceiling opening dimensions.
Ceiling
Ceiling board
Level gauge
TF Model
521(Hanging bolt)
790 (Ceiling opening)
39.5
109
875 (Ceiling opening)
572(Hanging bolt)
109
45
785(Hanging bolt)
45
101.5 672 (Hanging bolt) 101.5
840 Unit size
658 (Hanging bolt)
790 (Ceiling opening)
840 Unit size
66
744 Unit size
672 (Hanging bolt) 75
744 Unit size
75
570 Unit size
570 Unit size
600 (Ceiling opening)
66
39.5
TD Model
875 (Ceiling opening)
TE Model
600 (Ceiling opening)
Unit:mm
Unit:mm
Unit:mm
CAUTION
• This air-conditioner uses a drain pump.
• Install the unit horizontally using a level gauge.
• During the installation, care should be taken not to
damage electric wires.
• Select and mark the position for fixing bolts and
piping hole.
• Decide the position for fixing bolts slightly tilted to
the drain direction after considering the direction
of drain hose.
• Drill the hole for anchor bolt on the wall.
NOTE:
• Avoid the following installation location.
1. Such places as restaurants and kitchen where considerable amount of oil steam and flour is generated.
These may cause heat exchange efficiency reduction, or water drops, drain pump mal-function.
In these cases, take the following actions;
• Make sure that ventilation fan is enough to cover all noxious gases from this place.
• Ensure enough distance from the cooking room to install the air conditioner in such a place where it may not suck oily steam.
Air conditioner
Take enough
distance
Use the ventilation fan
for smoke-collecting
hood with sufficient
capacity.
Cooking table
2. Avoid installng air conditioner in such places where cooking oil or iron powder is generated.
3. Avoid places where inflammable gas is generated.
4. Avoid place where noxious gas is generated.
5. Avoid places near high frequency generators.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 23 -
LGE Internal Use Only
Ceiling Cassette 4-way
Keep the length of the bolt
from the bracket to 40mm
Hanging bolt
(W3/8 or M10)
Nut
(W3/8 or M10)
Flat washer for M10
(accessory)
Ceiling board
Spring washer
(M10)
Flat washer for M10
(accessory)
Nut
(W3/8 or M10)
Air Conditioner body
Ceiling board
Paper pattern
for installation
Adjust the same height
• The following parts are local purchasing.
Hanging Bolt - W 3/8 or M10
Nut
- W 3/8 or M10
Spring Washer - M10
Plate Washer - M10
150mm
Ceiling
Set screw of
paper pattern (4 pieces)
Open the ceiling board
along the outer edge of the
paper pattern.
CAUTION
• Tighten the nut and bolt to prevent unit from
falling off.
8.3 Wiring Connection
• Open the control box cover and connect the remote control cord and Indoor power wires.
Indoor
power cord
Remote
controller
cord
Control box cover
[Air inlet side view]
Control box cover
fitting screw(2 units)
Terminal Block in Indoor
1(L)
2(N)
3
4
Connected to outdoor unit
WARNING
Make sure that the screws of the terminal are free from looseness.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 24 -
LGE Internal Use Only
Ceiling Cassette 4-way
8.4 Installation of Decoration Panel
Before installing the decoration panel,
always remove the paper template.
The decoration panel has its installation
direction.
1. Temporarily fix two decoration panel fixing screws (hexagon M5 screw) on the unit body. (Tighten by
amount 10mm in length.)
The fixing screws (hexagon M5 screw) are included the indoor unit box.
2. Remove the air inlet grille from the decoration panel. (Remove the hook for the air inlet grille cord.)
3. Hook the decoration panel key hole (
) on the screws fixed in step above, and slide the panel so
that the screws reach the key hole edge.
4. Retighten completely two temporarily fixed screws and other two screws. (Total 4 screws)
5. Connect the louver motor connector and display connector.
6. After tightening these screws, install the air inlet grille (including the air filter).
Piping side
Air conditioner unit
Decoration panel fixing screws
(hexagon M5 screws)
Temporally fitting at 2 places
(Tightening about 10mm)
Control box cover
Louver
motor
Inlet Grille
Decoration panel
Display
Key holes
Lead wire for
louver motor and
display
Decoration panel fixing screws
(Hexagon M5 screw)
Inlet Grille
CAUTION
Install certainly the decoration
panel.
Cool air leakage causes sweating.
Water drops fall.
Good example
Bad example
Air conditioner
unit
Ceiling
board
Decoration panel
Fit the insulator (this part) and
be careful for cool air leakage
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 25 -
Air conditioner unit
Air
Cool air leakage
(no good)
Ceiling
board
Decoration
panel
LGE Internal Use Only
Ceiling Cassette 4-way
8.5 Indoor Unit Drain Piping
• Drain piping must have down-slope (1/50 to 1/100): be sure
not to provide up-and-down slope to prevent reversal flow.
• During drain piping connection, be careful not to exert extra
force on the drain port on the indoor unit.
• The outside diameter of the drain connection on the indoor
unit is 32mm.
Piping material: Polyvinyl chloride pipe VP-25
and pipe fittings
Upward
routing
not allowed
Pipe clamp
Indoor unit
Maintenance
drain port
• Be sure to install heat insulation on the drain piping.
1/50~1/100
Heat insulation material: Polyethylene foam with
thickness more than 8 mm.
MAX 700mm
Drain test
The air conditioner uses a drain pump to drain water.
Use the following procedure to test the drain pump operation:
Feed water
Flexible drain hose
(accessory)
Main
drain pipe
Drain Pump
Drain
port
Glue the joint
Drain hose connection
Use the clip (accessory)
Drain pan
• Connect the main drain pipe to the exterior
and leave it provisionally until the test
comes to an end.
• Feed water to the flexible drain hose and
check the piping for leakage.
• Be sure to check the drain pump for normal
operating and noise when electrical wiring
is complete.
• When the test is complete, connect the
flexible drain hose to the drain port on the
indoor unit.
Flexible drain hose
CAUTION
1/50~1/100
The supplied flexible drain hose should not be curved,
neither screwed. The curved or screwed hose may
cause a leakage of water.
MAX 700mm
Flexible drain hose
CAUTION
Flexible drain hose
After the confirmation of the above conditions, prepare the wiring as follows:
1) Never fail to have an individual power specialized for the air conditioner. As for the method of wiring, be guided by the
circuit diagram pasted on the inside of control box cover.
2) Provide a circuit breaker switch between power source and the unit.
3) The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from vibrations to which the
unit is subjected during the course of transportation. Check them and make sure that they are all tightly fastened. (If they
are loose, it could give rise to burn-out of the wires.)
4) Specification of power source
5) Confirm that electrical capacity is sufficient.
6) Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage marked on the name plate.
7) Confirm that the cable thickness is as specified in the power sources specification.
(Particularly note the relation between cable length and thickness.)
8) Never fail to equip a leakage breaker where it is wet or moist.
9) The following troubles would be caused by voltage drop-down.
• Vibration of a magnetic switch, damage on the contact point there of, fuse breaking, disturbance to the normal function of a
overload protection device.
• Proper starting power is not given to the compressor.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 26 -
LGE Internal Use Only
Ceiling Cassette 4-way
9. Accessories
Standard Accessories
Name
Drain hose
Clamp metal
Quantity
1 EA
1 EA
Washer for
hanging backet
8 EA
Clamp
Insulation for
fitting
8 EA
1 SET
Shape
for gas pipe
(Other)
• Paper pattern for
installation
• Owner's manual
• Installation manual
for liquid pipe
Optional Accessories(For Unit)
No.
Item
Type
Model No.
1
Wireless remote
control
With air purifying
function
AHWRHD
2
Central control
Simple
PQCSA101S0
Component Parts
• Wireless remote control : 1EA
• Holder : 1EA
• Battery : 2EA
• Screw : 2EA
• Central control
• Installation manual
• PCB: 1EA
3
PI485 Gateway
For central control
PHNFP14A0
• Installation manual
• Wire assembly
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 27 -
LGE Internal Use Only
Ceiling suspended
Ceiling suspended
Ceiling suspended
(R410A·Indoor Units)
AVNH-KL/LL
Contents
1. Features & Benefits ..............................................................................29
2. List of Functions....................................................................................30
3. Specifications........................................................................................31
4. Dimensional Drawings ..........................................................................32
5. Wiring Diagrams ...................................................................................33
6. Piping Diagrams....................................................................................34
7. Operating Instructions...........................................................................35
8. Installation.............................................................................................36
9. Accessories ..........................................................................................43
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 28 -
LGE Internal Use Only
Ceiling suspended
1. Features & Benefits
Natural CHAOS wind
• It swings at an angle, thus minimizing the difference in
indoor temperatures and allowing air in every corner of
the room.
Auto air flow direction (up&down)
• The air flow direction can be adjusted as desired by using the
remote controller.
Horizontal
• This is effective when you want to cool yourself directly
Downward
One-touch air filter & filter chage alarm
function
• Easily change air filter when it is dirty.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 29 -
LGE Internal Use Only
Ceiling suspended
2. List of Functions
Category
Air flow
Air purifying
Installation
Reliability
Convenience
Individual control
CAC network function
Special function kit
Others
Function
Air supply outlet
Airflow direction control (left & right)
Airflow direction control (up & down)
Auto swing (left & right)
Auto swing (up & down)
Airflow steps(Fan / Cool / Heat)
CHAOS swing(Wall mounted / Artcool)
CHAOS wind (Auto wind)
Jet cool (Power wind)
Swirl wind
Deodorizing filter
Plasma air purifier
Prefilter(Washable / Anti-fungus)
Drain pump
E.S.P. control
Electric heater (Operation)
High ceiling operation
Hot start
Self diagnosis
Soft dry operation
Auto changeover
Auto cleaning
Auto operation(Artificial intelligence)
Auto restart operation
Child lock
Forced operation
Group control
Sleep mode
Timer (On/Off)
Timer (weekly)
Two thermistor control
Standard wired remote controller
Deluxe wired remote controller
Simple wired remote controller
Wired remote controller(for hotel use)
Wireless remote controller(simple)
Wireless LCD remote controller
General central control(Non LGAP)
Dry contact
Simple central control(LGAP)
PDI(Power Distribution Indicator)
PI485
CTIE
Electro thermostat
RF remote controller
Tele controller
Zone control
Thermistor
AVNH366KLAC[UV36 NKC]
AVNH366KLA1(UV36 E)
1
Manual
Auto
O
3/4/3
X
O
O
O
O
X
O
O
O
O
X
O
X
O
X
O
O
X
X
PCRCUSZ0
X
X
X
O
X
X
PQDSB
O
PQNUD1S00
PMNFP14A0
X
X
X
X
X
AQTTA
AVNH426LLAC
[UV42 NLC]
1
Manual
Auto
O
3/4/3
X
O
O
O
O
X
O
O
O
O
X
O
X
O
X
O
O
X
X
PCRCUSZ0
X
X
X
O
X
X
PQDSB
O
PQNUD1S00
PMNFP14A0
X
X
X
X
X
AQTTA
AVNH486LLAC
[UV48 NLC]
1
Manual
Auto
O
3/4/3
X
O
O
O
O
X
O
O
O
O
X
O
X
O
X
O
O
X
X
PCRCUSZ0
X
X
X
O
X
X
PQDSB
O
PQNUD1S00
PMNFP14A0
X
X
X
X
X
AQTTA
AVNH606LLAC
[UV60 NLC]
1
Manual
Auto
O
3/4/3
X
O
O
O
O
X
O
O
O
O
X
O
X
O
X
O
O
X
X
PCRCUSZ0
X
X
X
O
X
X
PQDSB
O
PQNUD1S00
PMNFP14A0
X
X
X
X
X
AQTTA
Note: High ceiling operation, child lock, group control, timer (weekly) and two thermistor control can operate only with standard wired remote controller.
• O: Applied, • X: Not applied, • - : No relation,
• Option: Model name & price are different according to options, and assembled in factory with main unit.
• Accessory: Installed at field, ordered and purchased separately by the corresponding model name, supplied with separate package.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 30 -
LGE Internal Use Only
Ceiling suspended
3. Specifications
Indoor unit type
Ceiling suspended
AVNH366KLAC AVNH366KLA1 AVNH426LLAC AVNH486LLAC AVNH606LLAC
[UV36 NKC]
[UV36E]
[UV42 NLC]
[UV48 NLC]
[UV60 NLC]
Model
Power Supply
Cooling Capacity
Heating Capacity
Current
Nominal running current
Fan
Motor Type
Ø/V/Hz
1 / 220~240 / 50
1 / 220~240 / 50
1 / 220~240 / 50
/ 220~240 / 50
/ 220~240 / 50
kW
9.5
8.8
11.9
12.9
14.1
Btu/h
32,500
30,027
40,500
44,000
48,000
kW
10.6
10.3
13.2
14.5
15.8
Btu/h
36000
35,145
45000
49500
54000
A
0.31
0.31
-
0.31
0.31
Fan Type
Motor Output x Number of Unit
Air Flow Rate
(H/M/L)
Capacitor
Row x Column x FPI
Dimensions (WxHxD) Body
Weight
Body
Piping
Connections
Induction
Induction
Induction
Cross Flow Fan
Cross Flow Fan
Cross Flow Fan
63*3
63*3
63*4
63*4
63*4
29 / 27 / 24
29 / 27 / 24
32 / 30 / 28
36 / 34 / 32
40 / 38 / 36
cfm
1023 / 953 / 847
1023 / 953 / 847
µF/Vac
4,0 / 440
4,0 / 440
4,0 / 440
4,0 / 440
4,0 / 440
Direct Drive
Direct Drive
Direct Drive
Direct Drive
Direct Drive
3R*14C*19
3R*14C*19
3R*14C*19
3R*14C*19
3R*14C*19
mm
mm(inch)
kg(lbs)
Air Filter
Sound Level (H/M/L)
Induction
Cross Flow Fan
cmm
Drive
Coil
Induction
Cross Flow Fan
1136 / 1059 / 989 1271 / 1207 / 1136 1412 / 1341 / 1270
1350*630*220
1350*630*220
1750*630*220
1750*630*220
1750*630*220
(53.2*24.8*8.66)
(53.2*24.8*8.66)
(68.9*24.8*8.66)
(68.9*24.8*8.66)
(68.9*24.8*8.66)
35(77.2)
35(77.2)
45(99.2)
45(99.2)
45(99.2)
Long life filter
Long life filter
Long life filter
Long life filter
Long life filter
dB(A)+3
44 / 42 / 40
44 / 42 / 40
48 / 45 / 42
54 / 52 / 50
56 / 54 / 52
Liquid
mm(inch)
6.35(1/4)
6.35(1/4)
9.52(3/8)
9.52(3/8)
9.52(3/8)
Gas
mm(inch)
15.88(5/8)
15.88(5/8)
19.05(3/4)
19.05(3/4)
19.05(3/4)
mm
17
17
17
17
17
l/h
3.5
3.5
4.5
5.8
6.2
Drain(OD/ID)
Dehumidification Rate
Safety devices
Fuse, Thermal protector for fan motor
Temperature Sensor
Referigerant
Referigerant Control
Connectable outdoor unit
Power and transmission interunit cable
No.* mm2
Thermistor
Thermistor
Thermistor
Thermistor
Thermistor
R-410A
R-410A
R-410A
R-410A
R-410A
LEV
LEV
LEV
LEV
LEV
Single A
Single A
Single A
Single A
Single A
4*0.75
4*0.75
4*0.75
4*0.75
4*0.75
Note :
1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 27°C(80.6°F) DB /19°C(66.2°F) WB
- Outdoor Temperature 35°C(95°F) DB /24°C(75.2°F) WB
Heating: - Indoor Temperature 20°C(68°F) DB / 15°C(59°F) WB
- Outdoor Temperature 7°C(44.6°F) DB / 6°C(42.8°F) WB
Piping Length - Interconnecting Piping Length 7.5m
- Level Difference of Zero.
2. Cooling/heating capacity of indoor unit can be different when it is connected to other type outdoor.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 31 -
Conversion Formula
kW = Btu/h × 0.0002931
kcal/h = Btu/h × 0.252
CFM = CMM × 35.3
LGE Internal Use Only
Ceiling suspended
4. Dimensional Drawings
AVNH-KL/LL
160
320
320
160
B
50
50
C
650
A
Note:
1. Pipe Specification(mm)
(unit: mm)
Dimension
Chassis
A
B
C
VL Chassis
1750
1655
220
VK Chassis
1350
1255
220
More than
70cm
Model
Liquid
Gas
36k
Ø 6.35
Ø 15.88
42k, 48k, 60k
Ø 9.52
Ø 19.05
Anchor nut
Ceiling
Nut
Suspension
bolts
Washer
320mm
B
Suspension bolt
More than
30cm
More than
70cm
Suspension
bolts
Spring
washer
Hangen
Max.
12mm
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 32 -
Nut
Washer
LGE Internal Use Only
Ceiling suspended
5. Wiring Diagrams
AVNH-KL
AVNH-LL
CONNECTOR NUMBER
LOCATION
CONNECTOR NUMBER LOCATION
CN-POWER
AC POWER SUPPLY
CN-TH2
CN-MOTOR
BLDC FAN MOTOR OUTPUT CN-TH1
PIPE AND ROOM SENSOR
CN-D/PUMP
DRAIN PUMP OUTPUT
CN-HVB
AIR CLEANER
CN-AC/DC
AC/DC CONNECTION
CN-DOOR
STEP MOTOR
CN-DISPLAY
DISPLAY
CN-U/D1
STEP MOTOR
CN-FLOAT
FLOAT SWITCH INUT
CN-CC
CENTRAL CONTROL
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 33 -
DISCHARGE PIPE SENSOR
LGE Internal Use Only
Ceiling suspended
6. Piping Diagrams
:Cooling
Heat Exchanger
:Heating
C.F.F.
lndoor unit
: Thermistor
Refrigerant pipe connection port diameter
[unit: mm(inch)]
Model
Gas
Liquid
15.88(5/8)
6.35(1/4)
19.05(3/4)
9.52(3/8)
AVNH366KLAC
AVNH366KLA1
AVNH426LLFC
AVNH486LLFC
AVNH606LLFC
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 34 -
LGE Internal Use Only
Ceiling suspended
7. Operating Instructions
■ Remote Control Operation
The Remote Controller transmits the signals to the system.
Signal transmitter
1. START/STOP BUTTON
Operation starts when this button is pressed and stops when
the button is pressed again.
2. OPERATION MODE SELECTION BUTTON
Used to select the operation mode.
(Heat Pump)
(Cooling Only)
3. ROOM TEMPERATURE
SETTING BUTTONS
Used to select the room temperature.
5
6
4. INDOOR FAN SPEED SELECTOR
Used to select fan speed in four steps
low, medium, high and CHAOS.
1
5. JET COOL
Used to start or stop the speed cooling/heating.
(Speed cooling/heating operates super high fan speed.)
3
9
6. CHAOS SWING BUTTON
Used to stop or start louver movement and
set the desired up/down airflow direction.
12
7. ON/OFF TIMER BUTTONS
Used to set the time of starting and stopping operation.
4
2
7
11
8
13
10
CANCEL
ON
OFF
SET
AUTO CLEAN
8. TIME SETTING BUTTONS
Used to adjust the time.
15
14
9. TIMER SET/CANCEL BUTTON
Used to set the timer when the desired time is obtained and to
cancel the Timer operation.
Flip-up door
(opened)
11. AIR CIRCULATION BUTTON
Used to circulate the room air without cooling or heating.
Operation Mode
12. ROOM TEMPERATURE CHECKING BUTTON
Used to check the room temperature.
Cooling Operation
13. PLASMA(OPTIONAL)
Used to start or stop the plasma-purification function.
Auto Operation
14. RESET BUTTON
Initialize remote controller.
Healthy Dehumidification Operation
Heating Operation
• Cooling Model(
), Heat Pump Model(
10. SLEEP MODE AUTO BUTTON
Used to set Sleep Mode Auto operation.
)
15. 2nd F Button
Used prior to using modes printed in blue at the bottom of buttons.
❈ For the convertible type of air conditional, jet cool mode does not operate.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 35 -
LGE Internal Use Only
Ceiling suspended
8. Installation
• Please read this instruction sheet completely before installing the product.
• When the power cord is damaged, replacement work shall be performed by authorized personnel only.
• Installation work must be performed in accordance with the national wiring standards by authorized personnel only.
8.1 Selection of the best location
More than
70cm
Indoor unit
• There should not be any heat source or steam near
the unit.
• There should not be any obstacles to prevent the air
circulation.
• A place where air circulation in the room will be good.
• A place where drainage can be easily obtained.
• A place where noise prevention is taken into consideration.
• Do not install the unit near the door way.
More than
30cm
More than
70cm
• Ensure the spaces indicated by arrows from the wall,
ceiling, or other obstacles.
8.2 Indoor unit installation
Installation of Unit
160
Unit should be installed for horizontal discharge application only.
320
CASE 1
POSITION OF SUSPENSION BOLT
50
B
50
• Apply a joint-canvas between the unit and duct to
absorb unnecessary vibration.
C
A
(Unit:mm)
Dimension
320 160
A
B
C
1750
1350
1655
1255
220
220
Chassis
VL Chassis
VK Chassis
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
650
- 36 -
LGE Internal Use Only
Ceiling suspended
CASE 2
Suspension
bolts
• Install the unit leaning to a drainage hole side as a figure for easy water drainage.
Spring
washer
Max.
12mm
Nut
Washer
POSITION OF CONSOLE BOLT
• A place where the unit will be leveled and that can
support the weight of the unit.
• A place where the unit can withstand its vibration.
• A place where service can be easily performed.
• Select and mark the position for fixing bolts.
• Drill the hole for set anchor on the face of ceiling.
Old building
• Insert the set anchor and washer onto the suspension
bolts for locking the suspension bolts on the ceiling.
• Mount the suspension bolts to the set anchor firmly.
• Secure the installation plates onto the suspension
bolts (adjust level roughly) using nuts, washers and
spring washers.
New building
1 Set anchor
2 Plate washer
3 Spring washer
4 Nut
5 Suspension
bolts
: Tighten the nut and bolt to prevent unit falling
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 37 -
LGE Internal Use Only
Ceiling suspended
8.3 Preparing Work for Installation
Open side cover
1. Remove two screws from side-cover as shown in fig.
2. Unlock side-cover from side panel by slightly pulling
the edge of side cover.
3. Tap the side-cover with your palm on the
backside.(Inlet grill side.)
4. Hold the side-cover with other hand while tapping to
prevent it to fall down.
Recommendation: it is recommended to select the left
side for drain to have common hole in the side-cover
along with pipe and wiring.
5. Remove the rubber stopple in the desired drain direction.
6. Knock out the pipe hole from the left side-cover with
the help or nipper/plier.
7. Knock hole on right side-cover only if right side is
selected for water drain.
2
Edge part
1
Push the
side conver
Knock the hole
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 38 -
LGE Internal Use Only
Ceiling suspended
8.4 Mounting the anchor Nut & Bolt(Ceiling Mounting)
MOUNTING THE ANCHOR NUT AND BOLT
• Prepare 4 suspension bolts. (Each bolts length
should be same.)
Anchor nut
• Measure and mark the position for the Suspension
bolts and the piping hole.
Ceiling
Nut
Washer
Suspension
bolts
• Drill the hole for anchor nut on the ceiling.
• Insert the nuts and washer onto the suspension
bolts for locking the suspension bolts on the ceiling.
B
A
Suspension bolt
• Mount the suspension bolts to the anchor-nuts firmly.
• Secure the hangers onto the Suspension bolts
(adjust level roughly.) using nuts, washers and
spring washers.
• Adjust a level with a level gauge on the direction of
left-right, back-forth by adjusting suspension bolts.
Suspension
bolts
Spring
washer
Hangen
• Adjust a level on the direction of top-bottom by
adjusting supension bolts. Then the unit will be
declined to the bottomside so as to drain well.
Nut
Max.
12mm
Washer
(Unit:mm)
Dimension
A
B
1655
1255
320
320
Chassis
VL Chassis
VK Chassis
Hanging bolt
(W3/8 or M10)
Nut
(W3/8 or M10)
Flat washer for M10
(accessory)
Spring washer
(M10)
Flat washer for M10
(accessory)
Nut
(W3/8 or M10)
: Tighten the nut and bolt to prevent unit
falling.
DRILL A HOLE IN THE WALL.
WALL
Outdoor
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 39 -
(3/16"~5/16")
Indoor
5-7mm
• Drill the piping hole with a ø70mm hole core drill.
Drill the piping hole at either the right or the left with
the hole slightly slanted to the outdoor side.
LGE Internal Use Only
Ceiling Concealed Duct
8.5 Indoor unit installation
Hang the Indoor unit on suspension bolt as per following guidelines:
1. Lift the indoor unit to sufficient height.
2. Insert the suspended part of four suspension bolt in the four hangers provided on the side of main body one by
one.
3. Lower the indoor unit till the hangers rest on their respective flat washer.
4. Adjust the level in the top down direction by adjusting the suspension bolts.
Inclined the indoor unit as per direction provided in the fig
: Installation Information For Declination
1. Install declination of the indoor unit is very important for the drain of the convertible type air
conditioner.
2. Minimum thickness of the insulation for the connecting pipe shall be 10mm.
3. If the Installation Plates are fixed to horizontal line, the indoor unit after installing will be
declined to the bottomside.
Front of view
• The unit must be horizontal or inclined at angle.
• The inclination should be less thanr or euql to 1° or in between 10 to 20mm inclined in drain
direction as shown in fig.
Ceiling
10~20mm
Drain hose
Ceiling
10~20mm
Side of view
• The unit must be declined to the bottomside of the unit when finished installation.
Ceiling
5~10mm
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 40 -
LGE Internal Use Only
Ceiling Concealed Duct
8.6 Checking the Drainage
1. Set the air direction louvers up-and-down to the position(horizontally) by hand.
To check the drainage.
1. Pour a glass of water on the evaporator using a kettle.
2. Ensure the water flows through the drain hose of the
indoor unit without any leakage and goes out the
drain exit.
Drain piping
1. The drain hose should point downward for easy drain
flow.
Downward slope
2. Do not make drain piping like the following.
Accumulated
drain water
Air
Do not raise
Water
leakage
Water
leakage
Tip of drain hose
dipped in water
Water
leakage
Waving
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 41 -
Less than
50mm gap
Ditch
LGE Internal Use Only
Ceiling Concealed Duct
8.7 Connecting the Cables
Indoor
1. The control box of indoor unit is on the left side when
seen from front side.
2. Connect the cable to the indoor unit by connecting the
wires to the terminals on the control board individually
according to the outdoor unit connection (Ensure that
the color of the wires of the outdoor unit and the terminal no. are same as the those of the indoor unit)
Control terminal board
• The circuit diagram behind the panel is subject to
change without notice.
• The earth wire should be longer than the common
wires.
• When installing, refer to the circuit diagram behind
the panel front of the indoor unit.
• Connect the wires firmly so that they may not be
pulled out easily.
• Connect the wires according to color codes, referring to the wiring diagram.
After the confirmation of the above conditions, prepare the wiring as follows:
1) Never fail to have an individual power specialized for the air conditioner. As for the method of wiring, be guided
by the circuit diagram pasted on the inside of control box cover.
2) Provide a circuit breaker switch between power source and the unit.
3) The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from vibrations
to which the unit is subjected during the course of transportation. Check them and make sure that they are all
tightly fastened. (If they are loose, it could give rise to burn-out of the wires.)
4) Specification of power source
5) Confirm that electrical capacity is sufficient.
6) Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage marked on the
name plate.
7) Confirm that the cable thickness is as specified in the power sources specification.
(Particularly note the relation between cable length and thickness.)
8) Never fail to equip a leakage breaker where it is wet or moist.
9) The following troubles would be caused by voltage drop-down.
• Vibration of a magnetic switch, damage on the contact point there of, fuse breaking, disturbance to the normal function of a overload protection device.
• Proper starting power is not given to the compressor.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 42 -
LGE Internal Use Only
Ceiling suspended
9. Accessories
Standard Accessories
Name
Drain hose
Clamp metal
Washer for
hanging backet
Clamp
Insulation for
fitting
Quantity
1 EA
1 EA
8 EA
6 EA
1 set
(Other)
• Owner's manual
• Installation manual
Shape
for gas pipe
for liquid pipe
Optional Accessories(For Unit)
No.
Item
Type
Model No.
1
Central control
Simple
PQCSA101S0
Component Parts
• Central control
• Installation manual
• PCB: 1EA
2
PI485 Gateway
For central control
PHNFP14A0
• Installation manual
• Wire assembly
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 43 -
LGE Internal Use Only
Ceiling Concealed Duct
Ceiling Concealed Duct
Ceiling Concealed Duct
(R410A·Indoor Units)
ABNH-HL/GL/RL
Contents
1. Features & Benefits ..............................................................................45
2. List of Functions....................................................................................47
3. Specifications........................................................................................48
4. Dimensional Drawings ..........................................................................49
5. Wiring Diagrams ...................................................................................50
6. Piping Diagrams....................................................................................51
7. E.S.P. Setting for
...............................................................52
8. OPERATIONG INSTRUCTION ..............................................................56
9. Installation.............................................................................................58
10. Accessories ..........................................................................................63
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 44 -
LGE Internal Use Only
Ceiling Concealed Duct
1. Features & Benefits
■ Easy Installation
• Compact & light design
•
(Linear E.S.P Control)
• High head drain pump(700mm, Accessory)
■ Comfort & Reliability
• Low noise design
• 2-Thermistor control(Main body & Remote control)
• Zero stanby power consumption
■ Convenience
• Tele control(Accessory)
• LCD wired remote control
• Group control
• Zone control(Accessory)
• Central control(Accessory)
• Weekly progam
■ Cleanness
• Plasma air purifying system(Accessory)
• Hygienic and easy to clean filter
Easy Installation
Flexible Duct is easy to install, regardless of room
size or heater position.
Indoor Unit
Canvas
Duct
It can be installed even in a limited space and saves
construction cost with slim thickness
Discharge
Flexible Duct
Intake
Duct
Air Intake
Port
Ceiling
Air Discharge
Port
Ceiling
Board
Ceiling Board
Inspection
Port
Innovative Design of Fan and Housing System
Low Noise ! Easy Serviceability!
Plastic Fan and Housing Assembly
- Designed for low noise
- Designed to reduce weight
- Designed for easy service
This product guarantees lower sound level and gives
lesser service expenses.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 45 -
LGE Internal Use Only
Ceiling Concealed Duct
LG’s High Technology provide Easy and Low cost Design
of Duct work
Generally, when External Static Pressure increases
air volume decreases. But by controlling the phase of
motor while installing the product E.S.P. is controlled
from 8~10 mmAq linearly. E.S.P. control provides
required constant air volume irrespective of ESP
change. Desired ESP can also be set through LCD
wired remote control. Setting of the desired ESP
gives required combination of ESP and airflow.
Plasma Air Purifying Kit (Accessory)
The PLASMA Air Purifying Function not only removes
microscopic contaminants and dust, but also removes
house mites, pollen, and pet fur helps to prevent
allergic diseases like asthma.
Dust electrode discharge
Dust particles
Ionizer
Photo-Catalyst Coated Mesh
+4.8KV discharge
Polluted Air
+
+
+
Purified fresh Air
+
Generating plasma
Odour
Odour molecule
High Head Drain Pump(Accessory:700mm)
In some of the places natural drainage is not possible. For such places drain pump is very useful. It
removes condensed water from the unit.
Zone Control(Accessory)
It controls the temperature of each zone. Opening or
closing of the damper is controlled by sensing the
temperature of each zone. In the cooling mode, if the
temperature of a particular zone is lower than set
temperature then the damper is closed. On the other
hand if the temperature of a particular zone is higher
than the set temperature, damper is opened to provide cooling to the zone and vice versa in the heating
mode.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 46 -
LGE Internal Use Only
Ceiling Concealed Duct
2. List of Functions
Category
Air flow
Air purifying
Installation
Reliability
Convenience
Individual control
CAC network function
Special function kit
Others
Function
Air supply outlet
Airflow direction control (left & right)
Airflow direction control (up & down)
Auto swing (left & right)
Auto swing (up & down)
Airflow steps(Fan / Cool / Heat)
CHAOS swing(Wall mounted / Artcool)
CHAOS wind (Auto wind)
Jet cool (Power wind)
Swirl wind
Deodorizing filter
Plasma air purifier
Prefilter(Washable / Anti-fungus)
Drain pump
E.S.P. control
Electric heater (Operation)
High ceiling operation
Hot start
Self diagnosis
Soft dry operation
Auto changeover
Auto cleaning
Auto operation(Artificial intelligence)
Auto restart operation
Child lock
Forced operation
Group control
Sleep mode
Timer (On/Off)
Timer (weekly)
Two thermistor control
Standard wired remote controller
Deluxe wired remote controller
Simple wired remote controller
Wired remote controller(for hotel use)
Wireless remote controller(simple)
Wireless LCD remote controller
General central control(Non LGAP)
Dry contact
Simple central control(LGAP)
PDI(Power Distribution Indicator)
PI485
CTIE
Zone control
Thermistor
ABNH366GLAC
[UB36 NGC]
2
3/3/3
ABPAGH
O
ABDPG
O
O
O
O
O
X
X
O
O
O
O
X
O
O
O
O
X
X
X
X
X
X
PQDSB
O
PQNUD1S00
PMNFP14A0
X
ABZCA
AQTTA
ABNH426RLAC
[UB 42 NRC]
2
3/3/3
ABPAGH
O
ABDPG
O
O
O
O
O
X
X
O
O
O
O
X
O
O
O
O
X
X
X
X
X
X
PQDSB
O
PQNUD1S00
PMNFP14A0
X
ABZCA
AQTTA
ABNH486RLAC
[UB48 NRC]
2
3/3/3
ABPARH
O
ABDPG
O
O
O
O
O
X
X
O
O
O
O
X
O
O
O
O
X
X
X
X
X
X
PQDSB
O
PQNUD1S00
PMNFP14A0
X
ABZCA
AQTTA
ABNH606RLAC
[UB60 NRC]
2
3/3/3
ABPARH
O
ABDPG
O
O
O
O
O
X
X
O
O
O
O
X
O
O
O
O
X
X
X
X
X
X
PQDSB
O
PQNUD1S00
PMNFP14A0
X
ABZCA
AQTTA
• O: Applied, • X: Not applied, • - : No relation,
• Option: Model name & price are different according to options, and assembled in factory with main unit.
• Accessory: Installed at field, ordered and purchased separately by the corresponding model name, supplied with separate package.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 47 -
LGE Internal Use Only
Ceiling Concealed Duct
3. Specifications
Indoor unit type
Ceilling Concealed Duct - High Static
ABNH366GLAC
[UB36 NGC]
Model
Power Supply
Ø/V/Hz
Cooling Capacity
Nominal running current
Fan
Motor Type
9.8
11.9
13.2
14.9
40,500
45,000
51,000
kW
10.8
13.8
14.9
16.9
Btu/h
37,000
47,000
51,000
57,500
A
1.42
3.65
3.65
3.65
Induction
Induction
Induction
Induction
Sirocco Fan
Sirocco Fan
Sirocco Fan
Sirocco Fan
272*2
431*2
431*2
431*2
cmm
32/29/26
36/32/28
40/35/30
50/45/40
cfm
1130/1024/918
1260/1120/980
1413/1236/1059
1766/1413/1236
External Static Pressure
mmAq
10
10
15
15
Capacitor
µF/Vac
6/370
15/450
15/450
15/450
Direct Drive
Direct Drive
Direct Drive
Direct Drive
mm
3R x 10C x 21
3R x 10C x 21
3R x 13C x 19
4R x 13C x 19
Drive
Row x Columns x FPI
Dimensions(WxHxD) Body
Weight
1 / 220 ~240 / 50 1 / 220 ~240 / 50 1 / 220 ~240 / 50 1 / 220 ~240 / 50
33,500
Motor Output x Number of Unit
Coil
ABNH606RLAC
[UB60 NRC]
kW
Fan Type
Air Flow Rate(H/M/L)
ABNH486RLAC
[UB48 NRC]
Btu/h
Heating Capacity
Current
ABNH426RLAC
[UB42 NRC]
Body
mm(inch)
kg(lbs)
Air Filter
Sound Level (H/M/L)
dB(A)+3
1180*298*450(46.5*11.7*17.7) 1230*380*590(48.4*15.0*23.2) 1230*380*590(48.4*15.0*23.2) 1230*380*590(48.4*15.0*23.2)
38(84)
60(132)
60(132)
60(132)
Long life filter
Long life filter
Long life filter
Long life filter
42/39/36
42/40/38
44/42/40
46/44/42
Piping
Liquid
mm(inch)
6.35 (1/4)
9.52(3/8)
9.52(3/8)
9.52(3/8)
Connections
Gas
mm(inch)
15.88(5/8)
19.05(3/4)
19.05(3/4)
19.05(3/4)
mm
32/25
32/25
32/25
32/25
l/h
4
5
6
6.5
Drain(OD/ID)
Dehumidification Rate
Safety devices
Fuse, Thermal protector for fan motor
Temperature Sensor
Referigerant
Referigerant Control
Connectable outdoor unit
Power and transmission interunit cable
No.x mm2
Thermistor
Thermistor
Thermistor
Thermistor
R-410A
R-410A
R-410A
R-410A
LEV
LEV
LEV
LEV
Single A
Single A
Single A
Single A
4*0.75
4*0.75
4*0.75
4*0.75
Note :
1. Capacities are based on the following conditions:
Cooling: - Indoor Temperature 27°C(80.6°F) DB /19°C(66.2°F) WB
- Outdoor Temperature 35°C(95°F) DB /24°C(75.2°F) WB
Heating: - Indoor Temperature 20°C(68°F) DB / 15°C(59°F) WB
- Outdoor Temperature 7°C(44.6°F) DB / 6°C(42.8°F) WB
Piping Length - Interconnecting Piping Length 7.5m
- Level Difference of Zero.
2. Cooling/heating capacity of indoor unit can be different when it is connected to other type outdoor.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 48 -
Conversion Formula
kW = Btu/h × 0.0002931
kcal/h = Btu/h × 0.252
CFM = CMM × 35.3
LGE Internal Use Only
Ceiling Concealed Duct
4. Dimensional Drawings
ABNH-GL, RL
k
A
B
h
i l
f
e
K
J
C
E
j
a
D
F
(G)
H
b
c
d
Note:
1. Pipe Specification(mm)
Model
Liquid
Gas
36k
Ø 6.35
Ø 15.88
42k, 48k, 60k
Ø 9.52
Ø 19.05
(Unit: mm)
Capacity
A
B
F
(G)
H
ABNH366GLAC 1232 1182 355 45.5 450
30
87
830
ABNH426RLAC
ABNH486RLAC 1282 1230 477
ABNH606RLAC
30
Top view
(unit: mm)
C
D
56
E
590
J
K
a
b
c
d
e
f
h
i
j
k
l
186 298 229.5 243 232 243 116 160
53
59
81
19 158.5
120 1006 294 380 215 279 241 279 185 168
51
98
83
17
172
Front view
Inspection hole
(600X600)
Control box
600
1000
H
600
※Suitable dimension "H" is necessary
to get a slope to drain as figure.
Front
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 49 -
LGE Internal Use Only
Ceiling Concealed Duct
5. Wiring Diagrams
ROOM.
IN-PIPE.
OUT-PIPE.
CENTRAL CONTROL
REMOTE
TELE CONTROL THERMISTOR CONTROL THERMISTOR THERMISTOR
DRY CONTACT
CN-PIPE1
CN-REMO CN-PIPE2
CN-ROOM
PTC
HEATER
CN-AIRC
CN-PTC
VENTILATION
E/HEATER
FUSE
CN-POWER
TO OUTDOOR UNIT
BL
BR
1(L) 2(N)
GN/YL
CN-FLOAT
FLOAT S/W
RD
3
4
5
CN-ZONE
ZONE CONTROL
CN-CC
A/CL
UNIT
CN-OUT
ABNH-HL, ABNH-GL
CN-DISP
CN-MOTOR
CN-DPUMP
OPTION
RF-REMOTE
CONTROL
ABNH-RL
CONNECTOR NUMBER
CN-POWER
CN-MOTOR
CN-D/PUMP
CN-DISP
CN-FLOAT
CN-ZONE
CN-CC
LOCATION
AC POWER SUPPLY
BLDC FAN MOTOR OUTPUT
DRAIN PUMP OUTPUT
RF-REMOTE CONTROL
FLOAT SWITCH INUT
ZONE CONTROL OUTPUT
CENTRAL CONTROL OUTPUT
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
CONNECTOR NUMBER
CN-PIPE1
CN-PIPE2
CN-REMO
CN-ROOM
CN-AIRC
CN-PTC
CN-OUT
- 50 -
LOCATION
PIPE SENSOR
DISCHAGE PIPE SENSOR
REMOTE CONTROL
ROOM SENSOR
AIR CLEAN
PTC HEATER
VENTILATION /ELECTRIC HEATER
LGE Internal Use Only
Ceiling Concealed Duct
6. Piping Diagrams
:Cooling
:Heating
Heat Exchanger
Sirocco Fan
lndoor unit
: Thermistor
Refrigerant pipe connection port diameter
[unit: mm(inch)]
Model
Gas
Liquid
ABNH366GLAC
15.88(5/8)
6.35(1/4)
19.05(3/4)
9.52(3/8)
ABNH426RLAC
ABNH486RLAC
ABNH606RLAC
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 51 -
LGE Internal Use Only
Ceiling Concealed Duct
7. E.S.P. Setting for
(E.S.P. Control) provide required constant air volume irrespective of E.S.P.
charge.
(1) Open the rear cover of the wired remote-controller to set the mode.
(2) Select one of three selectable modes as follows.
■ Without Zone System
1. Position V-H, F-H:
• This position sets the maximum E.S.P as a default set.
2. Position V-L:
• This position sets the minimum E.S.P as a default set.
■ With Zone System
1. Position V-H:
• Maximum E.S.P setting & Fan speed is varied according to the state of dampers by micom.
2. Position F-H:
• Maximum E.S.P setting & Fan speed doesn't vary according to the opening & Closing of dampers.
3. Position V-L:
• Minimum E.S.P setting & Fan speed is varied according to the state of dampers by micom.
*Maximum: 18/24k - 8mmAq
30/36k - 10mmAq
48/60k - 15mmAq
Minimum: All-0mmAq
(3) Move the slide switch to set position.
TH
R14H OP3
SW TH
V-H
R13H
OP2
REMO
MAIN
2TH
R12H
CO1H
OP1
R19H
R11H
OP5R16H
OP4
R15H
OP7
R18H
R17H
F-H
OP6
LO
STAND
C070
V-L
R03S
HI
R04S
HIGH
R01S
R02S
SW
Slide switch for ceiling height
(4) Close the rear cover and check if it works normally.
CAUTION
• Select the position after checking duct work and E.S.P of the unit.
• Maunfactured in the position F-H.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 52 -
LGE Internal Use Only
Ceiling Concealed Duct
How to Set E.S.P?
Procedure of RPM change:
Ex) External Static pressure is 4mmAq for Model Name "ABNH246HLAB".
• To protect the unit, compressor is designed to be off during E.S.P. setting.
1
Push the "On/Off" button.
The unit will start.
AUTO SWING
OPERATION
SET TEMP
FAN SPEED
Room Temp
AUTO Heater Preheat
JET Defrost Humidify
Filter Out door
ZONE
1 2 3 4
Time
Timer
Operation unit
On Off
Set no. Time 01
2
Push the "Timer" and "Wind" button simultaneously for more then 3 seconds.
AUTO SWING
03
Program set
05
07
OPERATION
09
11
13
SET TEMP
Room Temp
15
3
Push the "Up" of "Down" button for E.S.P adjustment.
And, adjust the number which you want.(In this example, the number is "190".
Refer to the table 7-1 on the next page.)
03
AUTO SWING
OPERATION
05
07
09
11
13
SET TEMP
15
SUB FUNCTION
17
19
FAN SPEED
21
23
SUB FUNCTION
HI
MED
LO
AUTO Heater Preheat
JET Defrost Humidify
Filter Out door
ZONE
1 2 3 4
Time
Operation unit
03
23
AUTO Heater Preheat
JET Defrost Humidify
Filter Out door
ZONE
1 2 3 4
Room Temp
Timer
21
Program set
On Off
Set no. Time 01
On Off
Set no. Time 01
19
FAN SPEED
Time
Operation unit
17
HI
MED
LO
Timer
Timer
SUB FUNCTION
HI
MED
LO
Program set
05
07
09
11
13
15
17
19
21
23
Note: The range of selection is from 1~254. Since, the display is two Digit only.
If the range selection is above 100 then the third digit will appear in the screen as shown.
4
Shift the fan speed mode by pressing the fan speed button.
And then, Adjust numbers of next steps by repeating the stage 3.
(In this example, the numbers are "220" and "235" respectively.
5
Push the "Timer" and "Wind" button simultaneously for more than 3 seconds.
Then, Wind Data is memorized by the EEPROM of the main PCB.
AUTO SWING
OPERATION
Room Temp
Timer
Operation unit
- 53 -
03
FAN SPEED
SUB FUNCTION
HI
MED
LO
AUTO Heater Preheat
JET Defrost Humidify
Filter Out door
ZONE
1 2 3 4
Time
Timer
On Off
Set no. Time 01
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
SET TEMP
Program set
05
07
09
11
13
15
17
19
21
23
LGE Internal Use Only
Ceiling Concealed Duct
Table 7-1
Static Pressure(mmAq)
Model Name
ABNH366GLAC
ABNH426RLAC
ABNH486RLAC
ABNH606RLAC
0
2
4
6
8
10
12
14
15
Step
CMM(CFM)
High
32(1130)
230
230
225
220
150
1
Med
29(1024)
240
238
237
235
230
220
Low
26.5(936)
245
245
243
243
240
240
High
36(1271)
238
235
230
225
220
215
Med
32(1130)
253
250
245
240
235
230
Low
28(989)
255
255
255
255
250
248
High
40(1412)
230
225
220
215
205
200
190
180
160
Med
35(1235)
250
245
240
235
230
220
215
210
200
Low
30(1059)
255
255
255
250
245
240
235
230
225
High
50(1766)
185
180
174
162
154
140
90
5
1
Med
45(1589)
210
205
199
191
189
180
155
138
110
Low
40(1423)
230
225
219
215
210
205
193
180
171
Setting Value
Note: 1. To get the desired Airflow & E.S.P combination from the table set the matching value from
the table. Value other than that in table will not give the combinations of airflow & ESP
which are mentioned in the table.
2. Table 7-1 is based at 230V. According to the fluctuation of voltage, air flow rate varies.
Copyright ©2007 LG Electronics. Inc. All right reserved.
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LGE Internal Use Only
Ceiling Concealed Duct
Table 7-2
Model Name
ABNH366GLAC
ABNH426RLAC
ABNH486RLAC
ABNH606RLAC
Static Pressure(mmAq)
6
8
10
Setting
Value
0
High
1
42(1483)
40(1413)
38(1342)
35.5(1254) 33.5(1183) 32(1130)
Med
220
39(1377)
37(1307)
35(1236)
33(1165)
31(1095)
29(1024)
Low
240
34(1201)
32.5(1148)
31(1095)
29.5(1042)
27(954)
26.5(936)
High
215
44.5(1572) 43.4(1533)
41(1448)
39.4(1402) 37.5(1324) 36.4(1286)
Med
230
41(1448)
40.2(1420) 37.6(1328)
Low
248
37(1307)
36.1(1275) 34.6(1222) 31.5(1112) 29.1(1028) 27.9(985)
High
200
49(1730)
Med
220
Low
14
15
47.4(1675) 44.9(1584) 43.3(1529) 41.7(1472) 40(1412) 38.6(1361)
37(1305)
35.4(1249)
44(1554)
42.4(1498) 40.2(1420) 39.2(1384) 36.7(1296) 35(1236) 34.6(1220)
33(1164)
32.2(1137)
240
38(1342)
37.2(1314)
27(953)
26.2(925)
High
140
59(2083)
57.4(2028) 55.8(1969) 53.4(1886) 51.7(1826) 50(1766) 46.6(1644) 42.9(1516) 40.6(1432)
Med
180
53(1871)
51.4(1816) 49.8(1758) 47.4(1674) 45.9(1621) 45(1589) 42.6(1502) 39.6(1397) 38.3(1352)
Low
205
47(1660)
45.8(1618) 43.8(1547) 42.1(1488) 40.7(1435) 40(1412) 37.8(1335)
Step
2
4
12
CMM(CFM)
35(1234)
35(1236)
33.8(1194) 32.7(1155)
32.4(1145) 31.6(1114) 30(1059) 28.6(1008)
35(1234)
33.4(1179)
Notes:
1) The above table shows the correlation of External Static Pressure & Air Flow.
2) When installing, the value of motor step needs to be set according to E.S.P. of the table 7-2.
Copyright ©2007 LG Electronics. Inc. All right reserved.
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- 55 -
LGE Internal Use Only
Ceiling Concealed Duct
8. Operating Instructions
■ Name and Function of Remote Controller
AUTO SWING
OPERATION
SET TEMP
Room Temp
Timer
Operation unit
3
Signal Receiver
5
8
9
10
11
12
13
03
SUB FUNCTION
AUTO Heater Preheat
JET Defrost Humidify
Filter Out door
ZONE
1 2 3 4
HI
MED
LO
Time
On Off
Set no. Time 01
FAN SPEED
1
Program set
05
07
09
11
13
15
17
19
21
23
2
Timer
Cancel
Program
Week
6
7
4
Holiday
Plasma
15
16
17
SET/CLR
Hour
Min
RESET
14
1. Operation display
Displays the operation conditions.
9. Timer Set Button
Used to set the timer when the desired time is obtained.
2. On/Off Button
Operation starts when this button is pressed, and stops
when the button is pressed again.
10. Week Button
Used to set a day of the week.
3. Set Temperature Button
Used to set the temperature when the desired temperature
is obtained.
4. FAN Operation Button
Used to circulate room air without cooling or heating.
5. Electric Heater Button(optional)
Used to set the Electric Heater.
6. Fan Speed Button
Used to set desired fan speed.
7. Operation Mode Selection Button
Used to select the operation mode.
• Auto Operation Mode.
• Cooling Operation Mode.
• Soft Dry Operation Mode.
• Heating Operation Mode.(except cooling model)
11. Program Button
Used to set the weekly timer.
12. Holiday Button
Used to set a holiday of the week.
13. Time Set Button
Used to set the time of the day and change the time in the
weekly timer Function.
14. Set and Clear Button
Used to set and clear the weekly timer.
15. Room Temperature Checking Button
Used to check the room temperature.
16. Plasma Air Clean Button(optional)
17. Reset Button
Used to set the current time and clear the setting time.
8. Timer Cancel Button
Used to cancel the timer.
❈ Display temperature can be different from actual room temperature if the remote controller is installed at the
place where sun-rays are falling directly or the place nearby heat source.
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LGE Internal Use Only
Ceiling Concealed Duct
■ Optional Function
• Wireless Remote Controller
This air-conditioner is equipped with wired remote controller basically. But if you want to have the wireless remote controller,
you pay for it.
1. FAN Operation Button
Used to circulate room air without cooling or heating.
Signal transmitter
Transmits the signals to the signal receptor.
2. Cooling Operation Button
3. Soft Dry Operation Button
Used to dehumidify without overcooling.
1
11
A/CL
4
10
3
9
5
2
6
7
8
4. Heating Operation Button
(Heat pump model only)
5. Timer Set Button
Used to set the timer when the desired time is
obtained.
Then the wired remote controller is set up to 24
hours by an hour but the wireless remote controller
is set up to 7 hours by an hour. Therefore, if you
want to set over 7 hours, use the wired remote
controller.
6. Fan Speed Button
Used to set the desired fan speed.
7. On/Off Button
Operation starts when this button is pressed, and
stops when the button is pressed again.
8. Set Temperature Button
Used to set the temperature when the desired temperature is obtained
9. Auto Operation Button
10. Plasma Air Clean Button(Optional)
11. Electric Heater Button(Optional) Used to set the
Electric Heater.
CAUTION : for handling the Remote Controller
• Aim at the signal receptor on the wired remote controller so as to operate.
• The remote control signal can be received at a distance of up to about 7m.
• Be sure that there are no obstructions between the remote controller and the signal receptor.
• Do not drop or throw the remote controller.
• Do not place the remote controller in a location exposed to direct sunlight, or near the heating unit, or any other heat
source.
• Block a strong light over the signal receptor with a curtain or etc. so as to prevent the abnormal operation. (ex:electronic quick start, ELBA, inverter type fluorescent lamp)
Copyright ©2007 LG Electronics. Inc. All right reserved.
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LGE Internal Use Only
Ceiling Concealed Duct
9. Installation
• Please read this instruction sheet completely before installing the product.
• When the power cord is damaged, replacement work shall be performed by authorized personnel only.
• Installation work must be performed in accordance with the national wiring standards by authorized personnel only.
Air outlet vents
Air filters
Air intake vents
Wired LCD Remote Control
Required Parts
Required Tools
• Connecting cable
• Pipes: Gas side
Liquid side
• Hanging Bolt
(W 3/8 or M10 length 650mm)
• Insulated drain hose
• Level
• Screw driver
• Electric drill
• Hole core drill (ø70mm)
• Flaring Tools set
• Torque Wrenches
• Hexagonal Wrench (4mm, 5mm)
• Gas-leak detector
• Owner’s Manual
• Additional Drain hose
(Outer Dia ................................25.4mm)
• Thermometer
9.1 Selection of the best location
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Only for training and service purposes
- 58 -
Top view
(unit: mm)
Inspection hole
(600X600)
Control box
600
1000
Install the air conditioner in the location that satisfies the following conditions.
• The place shall easily bear a load exceeding four times the
indoor unit’s weight.
• The place should have enough area for inspection as shown
in figure.
• The place where the unit shall be leveled.
• The place shall allow easy water drainage.(Suitable dimension “H” is necessary to get a slope to drain as figure.)
• The place shall easily connect with the outdoor unit.
• The place where the unit is not affected by an electrical
noise.
• The place where air circulation in the room will be good .
• There should not be any heat source or steam near the unit.
600
Front
Front view
H
LGE Internal Use Only
Ceiling Concealed Duct
9.2 Ceiling dimension and hanging bolt
location
A
■ Installation of Unit
Install the unit above the ceiling correctly.
B
C
E
CASE 1
D
POSITION OF SUSPENSION BOLT
• Apply a joint-canvas between the unit and duct to absorb
unnecessary vibration.
• Apply a filter Accessory at air return hole.
• Refer toDimensinal Drawings.
I
1-3 mm
F
(G)
H
Drainage hole
• Install the unit leaning to a drainage hole side as a figure
for easy water drainage.
M10 Nut
X4
(Local
M10 SP. washer X 4 supply)
M10 washer
X4
M10 washer
X4
(Local
M10 SP. washer X 4 supply)
M10 Nut
X4
CASE 2
POSITION OF CONSOLE BOLT
• A place where the unit will be leveled and that can support the weight of the unit.
• A place where the unit can withstand its vibration.
• A place where service can be easily performed.
NOTE:
• Throughly study the following installation locations:
1. In such places as restaurants and kitchens, considerable amount of oil steam and flour adhere to the fan, the fin of the heat
exchanger, resulting in heat exchange reduction, spraying, dispersing of water drops, etc.
In these cases, take the following actions:
• Make sure that the ventilation fan for smoke-collecting hood on a cooking table has sufficient capacity so that it draws oily
steam which should not flow into the suction of the air conditioner.
• Make enough distance from a cooking room to install the air conditioner in such a place where it may not suck in oil steam.
2. Avoid installing air conditioner in such circumstances where cutting oil mist or iron powder is in suspension in factories, etc.
3. Avoid places where inflammable gas is generated, flows in, is stored or vented.
4. Avoid places where sulfurous acid gas or corrosive gas is generated.
5. Avoid places near high frequency generators.
Copyright ©2007 LG Electronics. Inc. All right reserved.
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- 59 -
LGE Internal Use Only
Ceiling Concealed Duct
• Select and mark the position for fixing bolts.
• Drill the hole for set anchor on the face of ceiling.
• Insert the set anchor and washer onto the suspension bolts for locking the suspension bolts on the
ceiling.
• Mount the suspension bolts to the set anchor firmly.
• Secure the installation plates onto the suspension
bolts (adjust level roughly) using nuts, washers and
spring washers.
Old building
New building
1 Set anchor
2 Plate washer
3 Spring washer
4 Nut
CAUTION
5 Suspension
bolts
Tighten the nut and bolt to prevent unit falling.
9.3 Connecting Cables
Connect the wires to the terminals on the control board individually according to the outdoor unit connection.
• Ensure that the color of the wires of outdoor unit and the terminal No. are the same as those of indoor unit respectively
Terminal Block in Indoor
1(L)
2(N)
3
4
Connected to outdoor unit
WARNING
Make sure that the screws of the terminal are free from looseness.
Clamping of cables
1) Arrange 2 power cables on the control panel.
2) First, fasten the steel clamp with a screw to the inner boss of control panel.
3) For the cooling model, fix the other side of the clamp with a screw strongly. For the heat pump model, put the
0.75mm2 cable(thinner cable) on the clamp and tighten it with a plastic clamp to the other boss of the control
panel.
4) In Australia, the length of power supply cord measured from the entry of the power supply cord to the middle of
live pin on the power plug should be over 1.8m.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 60 -
LGE Internal Use Only
Ceiling Concealed Duct
9.4 Insulation
THERMAL INSULATION
All thermal insulation must comply with local requirement.
INDOOR UNIT
Union for liquid pipe
Refrigerant pipe and thermal
insulator(Local supply)
Hose crip for thermal insulator
(Local supply)
Thermal insulator for refrigerant pipe
(Local supply)
Union for gas pipe
Thermal insulator for refrigerant pipe
(Local supply) Thermal insulator for
piping(Local supply)
Overlap with thermal
insulator for piping.
Hose crip for thermal insulator(Local supply)
Make sure that there is no clearance here.
9.5 Checking the Drainage
1. Remove the Air Filter.
2. Check the drainage.
• Spray one or two glasses of water on the evaporator.
• Ensure that water flows to drain hose from indoor
unit without any leakage.
Copyright ©2007 LG Electronics. Inc. All right reserved.
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- 61 -
LGE Internal Use Only
Ceiling Concealed Duct
CAUTION
1. Decline Installation of indoor unit is very important for the drain of the duct type air conditioner.
2. Minimum thickness of the insulation for the connecting pipe should be 5mm.
Front of view
• The unit must be or declined to wards drain hose while installation.
1~3mm
Ceiling
Drainage hole
CORRECT
Drainage hole
INCORRECT
CAUTION FOR GRADIENT OF
UNIT AND DRAIN PIPING
Lay the drain hose with a downware
inclination so water will drain out.
Thermal insulator
(Local supply)
• Alway lay the drain with downward inclination
(1/50 to 1/100).
Prevent any upward flow or reverse flow in any
part.
• 5mm or thicker formed thermal insulator shall
always be provided for the drain pipe.
Drainage pipe
(Local supply)
Unit
Make sure to be closed.
CORRECT
Drainage hole
INCORRECT
• Install the P-Trap (or U-Trap) to prevent
a water leakage caused by the blocking
of intake air filter.
1/50~1/100
Drain Pipe
MAX 700mm
Applied U-Trap Dimension
A ≥ 70mm
B ≥ 2C
C ≥ 2 x SP
SP = External Pressure
(mmAq)
Ex) External Pressure
= 10mmAq
A ≥ 70mm
B ≥ 40mm
C ≥ 20mm
B
C
U-Trap
A
Drain Pump
Copyright ©2007 LG Electronics. Inc. All right reserved.
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- 62 -
LGE Internal Use Only
Ceiling Concealed Duct
10. Accessories
Standard Accessories
Name
Clamp metal
Drain hose
Insulation for
fitting
Clamp
Screws for
duct flanges
Quantity
1 EA
1 EA
1 set
6 EA
1 set
(Other)
• Owner's manual
• Installation manual
• Washers(8 pcs.)
Shape
for gas pipe
for liquid pipe
Optional Accessories(For Unit)
No.
Item
1
Wireless remote
control
2
Type
Model No.
Component Parts
• Wireless remote control : 1EA
• Holder : 1EA
• Battery : 2EA
• Screw : 2EA
With air purifying
function
AHWRHS
AHWRHD(LCD)
Plasma air puirifying
filter
-
ABPAHH
3
Zone Control
-
ABZCA
• Factory sypplied-Zone control PCB
• Durchased Locally-Damper,
Damper Moter, thermostat
4
Drain Pump
-
ABDPG
• Drain Pump Assembly: 1EA
5
Central control
Simple
PQCSA101S0
• Central control
• Installation manual
6
PI485 Gateway
For central control
PHNFP14A0
• PCB: 1EA
• Installation manual
• Wire assembly
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 63 -
• Plasm Air Purifier Kit: 1EA
• Wired Remote Control: 1EA
LGE Internal Use Only
II. Outdoor Units
Introduction ....................................................................................................65
(AUUW-C / R410A) .........................................................................................67
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 64 -
LGE Internal Use Only
Introduction
Introduction
Outdoor Units - R410A
(AUUW-C)
• Models List
Series
Model name
Power supply
AUUW368C
AUUW368C1
MPS Inverter
AUUW428C
Heat Pump
3Ø, 380-415, 50Hz
AUUW488C
AUUW608C
• Indoor Unit Matching
LG’s
ual system.
system consist of one outdoor unit which can match with three different indoor units as individ-
The indoor units are ceiling cassette, ceiling concealed duct and ceiling & floor types.
Indoor unit
Outdoor unit
AUUW368C
Type
Model name
Ceiling Cassette
ATNH366DLFC
Ceiling Suspended
AVNH366KLAC
Ceiling Concealed Duct
ABNH366GLAC
AUUW368C1
AUUW428C
AUUW488C
AUUW608C
AVNH366KLA1
Ceiling Cassette
ATNH426DLFC
Ceiling Suspended
AVNH426LLFC
Ceiling Concealed Duct
ABNH426RLAC
Ceiling Cassette
ATNH488DLFC
Ceiling Suspended
AVNH486LLFC
Ceiling Concealed Duct
ABNH486RLAC
Ceiling Cassette
ATNH608DLFC
Ceiling Suspended
AVNH606LLFC
Ceiling Concealed Duct
ABNH606RLAC
1. Avoid installng air conditioner in such places where cooking oil or iron powder is generated.
2. Avoid places where inflammable gas is generated.
3. Avoid place where noxious gas is generated.
4. Avoid places near high frequency generators.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 65 -
LGE Internal Use Only
Introduction
• Model Number Nomenclature
A U U W 3 6 8 B
Serial Number
Electric Standard (Phase, Volts, Freq)
6:1Ø,220V~240V,50Hz
8:3Ø,380V~415V,50Hz
Nominal Cooling Capacity in Btu/h
60 : 60,000 Btu/h
12 : 12,000 Btu/h
18 : 18,000 Btu/h
72 : 72,000 Btu/h
24 : 24,000 Btu/h
100 : 100,000 Btu/h
30 : 30,000 Btu/h
36 : 36,000 Btu/h
48 : 48,000 Btu/h
Model Type
W : Inverter Heat Pump
H : Heat Pump
Indicates that this is a
R410A
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 66 -
outdoor unit
LGE Internal Use Only
Inverter SINGLE A
Inverter SINGLE A
(R410A·Outdoor Units)
AUUW-C
Contents
1. Specifications........................................................................................68
2. Dimensional Drawings ..........................................................................70
3. Wiring Diagrams ...................................................................................72
4. Piping Diagrams....................................................................................74
5. Electric Characteristics .........................................................................75
6. Operation Range...................................................................................76
7. Installation.............................................................................................77
Copyright ©2007 LG Electronics. Inc. All right reserved.
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LGE Internal Use Only
Inverter SINGLE A
1. Specifications
Nominal Capacity and Nominal Input
Indoor Units
Outdoor Units
Cooling
Nominal Capacity
(Min~Rating~Max)
Nominal Input
(Min~Rating~Max)
Energy label
Heating
Cooling
Heating
kw
Btu/h
kw
Btu/h
kw
kw
ABNH366GLAC
ABNH426RLAC
ABNH486RLAC
ABNH606RLAC
AUUW368C
AUUW428C
AUUW488C
AUUW608C
5.98~9.82~10.97
7.21~11.87~13.22
8.44~13.19~15.47
9.50~14.95~16.76
20,400~33,500~37,400 24,600~40,500~45,100 28,800~45,000~52,800 32,400~51,000~57,200
6.68~10.84~12.25
8.62~13.77~15.81
9.50~14.95~16.41
10.20~16.85~17.88
22,800~37,000~41,800 29,400~47,000~53,900 32,400~51,000~56,000 34,800~57,500~61,000
1.84~3.06~3.38
2.17~3.80~3.97
2.86~4.38~4.82
3.07~5.21~5.24
1.82~3.00~3.34
2.18~3.80~4.00
2.85~4.14~4.73
3.10~4.52~5.20
3.21 / 3.61
3.12 / 3.63
3.01 / 3.61
2.87 / 3.73
Nominal Capacity and Nominal Input
Indoor Units
Outdoor Units
Cooling
Nominal Capacity
(Min~Rating~Max)
Nominal Input
(Min~Rating~Max)
Energy label
Heating
Cooling
Heating
kw
Btu/h
kw
Btu/h
kw
kw
ATNH366DLFC
ATNH426DLFC
ATNH486DLFC
ATNH606DLFC
AUUW368C
AUUW428C
AUUW488C
AUUW608C
6.24~9.52~10.85
7.39~11.87~13.55
8.24~12.89~15.34
8.80~14.21~16.13
21,300~32,500~37,000 25,200~40,500~46,200 28,100~44,000~52,300 30,000~48,500~55,000
8.65~10.84~12.02
8.27~13.33~15.16
9.34~14.50~15.84
9.85~15.97~18.06
29,500~37,000~41,000 28,200~45,500~51,700 31,800~49,500~54,000 33,600~54,500~61,600
1.75~2.97~3.75
2.10~3.70~3.85
2.11~4.21~4.70
2.65~4.92~4.85
2.32~3.00~3.42
2.04~3.78~3.74
2.07~4.25~4.31
2.62~4.96~4.81
3.21 / 3.61
3.21 / 3.53
3.06 / 3.41
2.89 / 3.22
Nominal Capacity and Nominal Input
Indoor Units
Outdoor Units
Nominal Capacity
(Min~Rating~Max)
Cooling
Heating
Nominal Input
(Min~Rating~Max)
Energy label
Cooling
Heating
kw
Btu/h
kw
Btu/h
kw
kw
AVNH366KLAC
AUUW368C
5.98~9.52~10.97
20,400~32,500~37,400
6.68~10.6~12.25
22,800~36,000~41,800
1.89~3.15~3.78
1.98~3.29~3.79
3.03 / 3.2
AVNH426LLAC
AUUW428C
7.39~11.87~13.55
25,200~40,500~46,200
8.27~13.19~15.16
28,200~45,000~51,700
2.10~3.65~3.85
2.04~3.65~3.74
3.35 / 3.61
Notes:
1. Capacities are based on the following conditions:
Cooling:
- Indoor Temperature 27°C(80.6°F) DB /19°C(66.2°F) WB
- Outdoor Temperature 35°C(95°F) DB /24°C(75.2°F) WB
Heating:
- Indoor Temperature 20°C(68°F) DB / 15°C(59°F) WB
- Outdoor Temperature 7°C(44.6°F) DB / 6°C(42.8°F) WB
Piping Length - Interconnecting Piping Length 7.5m(25ft)
- Level Difference of Zero.
2. Due to our policy of innovation some specifications may be changed without notification.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 68 -
AVNH486LLAC
AVNH606LLAC
AUUW488C
AUUW608C
8.24~12.90~15.34
8.80 ~ 13.83 ~ 16.13
28,100~44,000~52,300 30,027 ~ 47,200 ~ 55,038
9.34~14.51~15.84
9.85 ~ 15.65 ~ 18.00
31,800~49,500~54,000 33,610 ~ 53,412 ~ 61,419
2.11~4.13~4.70
2.88 ~ 4.80 ~ 5.28
2.07~4.22~4.31
3.00 ~ 5.00 ~ 5.50
3.12 / 3.44
-
Conversion Formula
kW
= Btu/h × 0.0002931
kcal/h = Btu/h × 0.252
CFM
= CMM × 35.3
LGE Internal Use Only
Inverter SINGLE A
Outdoor Units
Running current
AUUW368C
Power Supply
Power supply cable (outdoor )
Power and transmission cable (outdoor to indoor)
A
A
Ø,V,Hz
No.* mm2
No.* mm2
Dimensions
mm(inch)
Net Weight
Compressor
(Inverter )
Cooling
Heating
W*H*D
Type
Qty x model
Motor type
Oil Charge volume
Oil Type
Refrigerant circuit Charge
Type
Control
Max. Piping Length/Elevation
Heat exchanger
Rows x Column x FPI
Defrosting Method
Fan
Capacitor
Drive
No. Used / Diameter
Discharge direction
Air Flow Rate
Noise Level(H/L)
Sound Press,1m
Piping connections Liquid (Ø)
Gas (Ø)
Max. Interunit
Total Piping(Main+Total Branch)
Piping Length
Main Piping
Indoor Unit~Outdoor Unit
Max. elavation
AUUW368C1
AUUW428C
AUUW488C
AUUW608C
4.0 ~ 5.3 ~ 7.8
3.8 ~ 5.0 ~ 7.4
4.5 ~ 6.1 ~ 9.1
4.5 ~ 7.0 ~ 9.6
4.7 ~ 8.0 ~ 10.2
3.5 ~ 4.3 ~ 7.4
3.5 ~ 4.8 ~ 7.4
4.5 ~ 6.1 ~ 8.0
4.5 ~ 6.4 ~ 8.5
4.2 ~ 7.1 ~ 10.2
3 / 380 ~ 415 / 50 3 / 380 ~ 415 / 50 3 / 380 ~ 415 / 50 3 / 380 ~ 415 / 50 3 / 380 ~ 415 / 50
4 x 3.5
4 x 3.5
4 x 3.5
4 x 3.5
4 x 3.5
4 x 0.75
4 x 0.75
4 x 0.75
4 x 0.75
4 x 0.75
870*1060*320
(34.3*41.7*12.6)
kg(lbs)
80(176)
Twin Rotary
1 x 5KD240X
BLDC
cc
900
FV50S
g(oz)
2500(88.18)*
R410A
L.E.V
m
50/30
2R x 48C x 18
Reversing cycle
µF/Vac
2/400
Direct Drive
EA/ mm(inch)
2/400(15.7)
Side / Top Side Discharge
CMM(CFM) 32*2 (1130*2)
dB(A)+3
51
mm (inch)
6.35 (1/4)
mm (inch)
15.88 (5/8)
m
50
m
50
m
30
870*1060*320
(34.3*41.7*12.6)
80(176)
Twin Rotary
1 x 5KD240X
BLDC
900
FV50S
2500(88.18)*
R410A
L.E.V
50/30
2R x 48C x 18
Reversing cycle
2/400
Direct Drive
2/400(15.7)
Side Discharge
32*2 (1130*2)
51
6.35 (1/4)
15.88 (5/8)
50
50
30
Notes:
1. Capacities are based on the following conditions:
Cooling:
- Indoor Temperature 27°C(80.6°F) DB /19°C(66.2°F) WB
- Outdoor Temperature 35°C(95°F) DB /24°C(75.2°F) WB
Heating:
- Indoor Temperature 20°C(68°F) DB / 15°C(59°F) WB
- Outdoor Temperature 7°C(44.6°F) DB / 6°C(42.8°F) WB
Piping Length - Interconnecting Piping Length 7.5m(25ft)
- Level Difference of Zero.
2. Due to our policy of innovation some specifications may be changed without notification.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 69 -
900*1.165*370
(35.4*45.8*14.5)
105(231)
Twin Rotary
1 x 5JD420X
BLDC
1300
FV50S
4000(141.1)
R410A
L.E.V
75/30
2R x 52C x 18
Reversing cycle
Direct Drive
2/460(18.1)
Side Discharge
53*2 (1872*2)
53
9.52 (3/8)
19.05 (3/4)
75
75
30
900*1.165*370
(35.4*45.8*14.5)
105(231)
Twin Rotary
1 x 5JD420X
BLDC
1300
FV50S
4000(141.1)
R410A
L.E.V
75/30
2R x52C x 18
Reversing cycle
Direct Drive
2/460(18.1)
Side Discharge
53*2 (1872*2)
54
9.52 (3/8)
19.05 (3/4)
75
75
30
900*1.165*370
(35.4*45.8*14.5)
105(231)
Twin Rotary
1 x 5JD420X
BLDC
1300
FV50S
4000(141.1)
R410A
L.E.V
75/30
2R x 52C x 18
Reversing cycle
Direct Drive
2/460(18.1)
Side Discharge
53*2 (1872*2)
55
9.52 (3/8)
19.05 (3/4)
75
75
30
Conversion Formula
kW
= Btu/h × 0.0002931
kcal/h = Btu/h × 0.252
CFM
= CMM × 35.3
LGE Internal Use Only
Inverter SINGLE A
2. Dimensional Drawings
AUUW368C/ AUUW368C1
320
340
360
4-holes for anchor bolts
1030
1060
4
3
76.5
2
160
550
870
1
160
64
320
(Unit: mm)
Number
Name
Descripition
1
Liquid side service valve(mm)
Ø6.35
2
Gas side service valve(mm)
Ø15.88
3
Air discharge grill
4
Control Cover
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 70 -
LGE Internal Use Only
Inverter SINGLE A
AUUW42/48/608C
4-hole for anchor bolts
L1
L2
D
L3
W
L4
H
Control cover
L5
L10 L11
Liquid side
3-way valve
L7
L6
L8
Gas side
3-way valve
L9
Model
Dimensions
W
mm
H
mm
D
mm
L1
mm
L2
mm
L3
mm
L4
mm
L5
mm
L6
mm
L7
mm
L8
mm
L9
mm
L10
mm
L11
mm
mm
mm
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
AUUW42/48/608C
900
1,165
370
460
45
410
1,135
30
550
175
175
112
120
83
Ø9.52
Ø19.05
- 71 -
LGE Internal Use Only
Inverter SINGLE A
3. Wiring Diagrams
AUUW368C/ AUUW368C1
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 72 -
LGE Internal Use Only
Inverter SINGLE A
AUUW42/48/608C
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 73 -
LGE Internal Use Only
Inverter SINGLE A
4. Piping Diagram
AUUW36/42/48/608C /368C1
Reversing
Valve
Refrigerant flow
Cooling
Heating
MODEL
A (mm)
AUUW368C
6.35
AUUW368C1
AUUW428C
9.52
AUUW488C
9.52
9.52
AUUW608C
Oil
Separator
B (mm)
Thermistor
15.88
19.05
19.05
19.05
Thermistor
Heat
Exchanger
Accumulator
Solenoid
valve
Field piping
Gas
ØB
Field piping
Liquid ØA
Inverter
Compressor
Low Pressure
Switch
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Thermistor
L.E.V
.
- 74 -
Thermistor
LGE Internal Use Only
Inverter SINGLE A
5. Electric Characteristics
Unit
Model
Type
Hz
Power
Voltage
OFM
MCA
MOP
MSC
RLA
kW
FLA
7.76
21.1
14
7
0.13
1.4
9.12
26.0
14
7
0.18
1.5
AUUW488C
[UU49W UHC]
10.99
29.7
14
7
0.18
1.5
AUUW608C
[UU61W UHC]
11.00
35.0
14
7
0.18
1.5
AUUW368C1
[UU37WE]
AUUW368C
[UU37W UEC]
AUUW428C
[UU43W UHC]
inverter
50
380~415
Voltage range
Compressor
Min : 352
Maxi :457
Notes :
1. Voltage range
Voltage supplied to the unit terminals should be within the minimum and maximum range
2. Maximum allowable voltage unbalance between phase is 2 %
3. MCA / MOP
MCA = (1.25 x Load1) + Load2 + Load3
MOP = (2.25 x Load1) + Load2 + Load3
- Load1 : Rated running current of largest motor
(compressor or other motor)
- Load2 : sum of current for all other motors
- Load3 : any other load rated 1.0A or more
4. Select wire spec. based on the MCA
5. Select proper circuit breaker as given below
MCA < circuit breaker ≤ MOP
6. Recommended circuit breaker is ELCB (Earth Leakage circuit
breaker)
7. MSC & RLA are measured as the compressor only test condition.
8. MSC values
14 : MSC of (inv. comp.)
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
9. RLA is measured during each individual compressor test condition.
Ex) 7.0 : RLA of (inv. comp.)
10. OFM is measured as the outdoor unit test condition
(Example) Selection of proper circuit breaker
Model : AUUH368C
- Rated running current : 5.09 A (refer to spec. sheet)
MCA = (1.25 x Load1) + Load2 + Load3
= (1.25 x 8.75) + 0 + (1.4) = 7.76 A
MOP = (2.25 x Load1) + Load2 + Load3
= (2.25 x 8.75) + 0 + (1.4) = 12.84 A
→ Finally select circuit breaker 20A
MCA : Minimum Circuit Amperes (A)
MOP : Maximum rating over current protective device
MSC : Maximum Starting Current
RLA : Rated Load Amperes (A)
OFM : Outdoor Fan Motor
kW : Fan Motor rated output (kW)
FLA : Full Load Amperes (A)
- 75 -
LGE Internal Use Only
Inverter SINGLE A
6. Operation Range
Cooling
Heating
46
Operative
43
Outdoor
Unit
[°C DB]
Continuous
operation
21
Outdoor
Unit
[°C DB]
Warming up
Operation
24
Continuous
operation
-10
-10
Operative
-15
18
32
16
Indoor Unit [°C DB]
Indoor Unit [°CDB]
❈ Although low ambient kit is installed, in
case outdoor temperature goes below 0°C,
the cooling capacity can be dropped and
operation characteristics can be slightly
different.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
30
- 76 -
Operative:
Intermittent operation due to the operation
conditions (indoor/outdoor temperature humidity,
and load) can cause
the heating capacity to drop.
LGE Internal Use Only
Inverter SINGLE A
7. Installation
7.1 Select the best location
• If a roof is built over the unit to prevent direct sunlight or rain exposure, make sure that heat radiation from the
condenser is not restricted.
• Do not place animals and plants in the path of the warm air.
• Take the air conditioner weight into account and select a place where noise and vibration are minimum.
• Select a place so that the warm air and noise from the air conditioner do not disturb neighbors.
• Rooftop Installations : If the outdoor unit is installed on a roof structure, be sure to level the unit. Ensure the
roof structure and anchoring method are adequate for the unit location. Consult local codes regarding rooftop
mounting.
• Ensure that the space around the back is more than 30cm and sides is more than 30cm. The front of the unit
should have more than 70cm of space.
More than
30cm
Su
nro
More than
30cm
of
Fe
ob nce
sta or
cle
s
More than
30cm
More than 50cm
Su
nro
More than 50cm
(Service space)
of
More than
30cm
Fe
ob nce
sta or
cle
s
More than 50cm
More than 70cm
More than 70cm
7.2 Settlement of outdoor unit
• Anchor the outdoor unit with a bolt and nut(ø10mm) tightly and horizontally on a concrete or rigid mount.
Bolt
Tubing connection
• When installing on the wall, roof or rooftop, anchor the
mounting base securely with a nail or wire assuming the
influence of wind and earthquake.
• In the case when the vibration of the unit is conveyed to
the hose, secure the unit with an anti-vibration rubber.
Caution:
Be very careful to carry product.
• Do not have only one person carry product if it is more than 20 kg.
• PP bands are used to pack some products. Do not use them as a mean for transportation because they are
dangerous.
• Do not touch heat exchanger fins with your bare hands. Otherwise you may get a cut in your hands.
• Tear plastic packaging bag and scrap it so that children cannot play with it. Otherwise plastic packaging
bag may suffocate children to death.
• When carrying in outdoor unit, be sure to support it at four points. Carrying in and lifting with 3-point support
may make outdoor unit unstable, resulting in a fall of it.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 77 -
LGE Internal Use Only
Inverter SINGLE A
7.3 Piping length and the elevation
Pipe Size
(Diameter:Ø)
Gas
Liquid
Standard
Max.
Standard
Max.
36k Btu/h
5/8"(15.88mm) 1/4"(6.35mm)
7.5
50
5
30
35
42k Btu/h
3/4"(19.05mm) 3/8"(9.52mm)
7.5
75
5
30
50
48k Btu/h
3/4"(19.05mm) 3/8"(9.52mm)
7.5
75
5
30
50
60k Btu/h
3/4"(19.05mm) 3/8"(9.52mm)
7.5
75
5
30
50
Capacity
Length A(m)
Elevation B(m)
*Additional
refrigerant(g/m)
Outdoor unit
Indoor unit
Outdoor unit
A
B
A
Outdoor unit
Oil trap
B
Indoor unit
A
B
Indoor unit
If piping length is more than 5m
CAUTION:
• Rated performance for refrigerant line length of:7.5m
• Capacity is based on standard length and maximum allowance length is on the basis of reliability.
• Improper refrigerant charge may result in abnormal cycle.
• Oil trap should be installed every 10 meters.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 78 -
LGE Internal Use Only
Troubleshooting Guide
III. Troubleshooting Guide
Self-diagnosis Function .................................................................................80
Cycle Troubleshooting Guide ........................................................................81
Electronic Parts Troubleshooting Guide ......................................................82
General Information........................................................................................87
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 79 -
LGE Internal Use Only
Troubleshooting Guide
1. Self-diagnosis Function
■ Error Indicator
• The function is to self-diagnosis air conditioner and express the troubles identification if there is any trouble.
• Error mark is ON/OFF for the operation LED of evaporator body in the same manner as the following table.
• If more than two troubles occur simultaneously, primarily the highest trouble for error code is expressed.
• After error occurrence, if error is released, error LED is also released simultaneously.
• To operate again on the occurrence of error code, be sure to turn off the power and then turn on.
• Having or not of error code is different from Model.
Indoor Error
Error code
INV TPS
Description
LED 1
(Red)
LED 2
(Green)
Indoor
Status
00
No Error
ON
01
Indoor Room themistor error
1time
OFF
02
Indoor in-piping sensor error
2times
OFF
03
Remote controller error
3times
OFF
04
Drain Pump error
4times
OFF
05
Communcation error between in and out
5times
OFF
06
Indoor Out-Piping sensor error
6times
OFF
07
Differnt mode operation
7times
OFF
Outdoor Error
Error Code
21
22
23
24
25
26
32
33
40
41
44
45
46
47
51
52
53
54
60
61
62
63
65
67
105
INV TPS
Description
DC Peak (IPM Fault)
CT 2(Max CT)
DC Link Low Volt.
L/H press SW
Low voltage / Over voltage
DC Comp Position Error
D-Pipe High (INV)
D-Pipe High (Normal)
CT Sensor (Open / Short)
INV. D-PipeTh Error (Open / Short)
Outdoor Air Th Error (Open / Short)
Cond. Pipe Error (Open / Short)
Suction Pipe Error (Open / Short)
Const D-PipeTh Error (Open / Short)
Over Capacity
Comm. Error(Main micon <-> Sub micom)
Comm. Error(Indoor <-> Outdoor)
Outdoor 3 phase power supply
Reverse phase / phase omission
EEPROM Check Sum Error
Cond. Pipe High
Heatsink High
Cond. Pipe Low
Heatsink Th Error (Open/Short)
Outdoor BLDC Fan Lock
Comm. Error(Main board <->Fan board)
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 80 -
LED 1
(Red)
LED 2
(Green)
Indoor
Status
2times
2times
2times
2times
2times
2times
3times
3times
4times
4times
4times
4times
4times
4times
5times
5times
5times
1times
2times
3times
4times
5times
6times
2times
3times
1times
4times
5times
6times
7times
1times
2times
3times
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
5times
4times
Off
6times
6times
6times
6times
6times
6times
10times
1times
2times
3times
5times
7times
5times
O
O
Off
Off
Off
Off
Off
Off
Off
LGE Internal Use Only
Troubleshooting Guide
2. Cycle Troubleshooting Guide
Trouble analysis
1. Check temperature difference between intake and discharge air, and operating current.
Temp. difference
Current
: approx. 0°C
: less than 80% of
rated current
All amount of refrigerant leaked out.
Check refrigeration cycle.
Temp. difference
Current
: approx. 8°C
: less than 80% of
rated current
Refrigerant leakage
Clog of refrigeration cycle
Defective compressor
Temp. difference
Current
: less than 8°C
: near the rated
current
Temp. difference
: over 8°C
Temp. Difference
Operating Current
Excessive amount of refrigerant
Normal
Notice:
Temperature difference between intake and discharge air depends on room air humidity. When the room air
humidity is relatively higher, temperature difference is smaller. When the room air humidity is relatively lower
temperature difference is larger.
2. Check temperature and pressure of refrigeration cycle.
Suction pressure
(Compared with
the normal value)
Temperature
(Compared with
the normal value)
Cause of Trouble
Description
High
Defective compressor
Current is low.
Normal
Excessive amount of
refrigerant
High pressure does not quickly
rise at the beginning of operation.
Insufficient amount of
refrigerant(Leakage)
Clogging
Current is low.
Higher
Lower
Higher
Notice:
1. The suction pressure is usually 4.5~6.0 kg/cm G at normal condition.
2. The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with
putty.
2
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 81 -
LGE Internal Use Only
Troubleshooting Guide
3. Electronic Parts Troubleshooting Guide
❇ Refer to electronic contorol device drawing & schematic diagram.
Trouble 1
The Product doesn’t operate at all.
Turn off the main power and wait until LED on outdoor PCB is off.
Turn on the main power again.
Does "Beeping" sound is made from the indoor unit?
NO
YES
Check the voltage of power(AC220V/AC240V, 50Hz).
• The voltage of main power.
• The voltage applied to the unit.
• The connecting method of Indoor/Outdoor connecting cable (each color)
• The P.W.B. Ass'y
(Fuse, Noise Filter, Power Transformer, IC01D, IC02D, etc.)
• Primarily, the operating condition of Micom is O.K.
• Check CN-DISP1
The operation check of the P.C.B. Ass'y
Specification
Procedure
Remedy
1) The input voltage of power transformer.
1) AC230V ± 30V
: Check the rated voltage
1) Replace
power transfomer.
2) The output voltage of power
transformer.
2) 14V ± 3V
2) Replace
power transfomer.
3) IC01D(7812)
3) DC12V
3) Replace IC01D.
4) IC02D(7805)
4) DC5V
4) Replace IC02D.
5) IC01A(KIA7036)
5) The voltage of micom pin 29
: DC4.5V↑
5) Replace IC01A.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 82 -
LGE Internal Use Only
Troubleshooting Guide
Trouble 2
Product doesn't operate with the remote controller.
Turn on main power.
While the compressor has been stopped, the compressor does not operate
owing to the delaying function for 3 minutes after stopped.
When the compressor stopped Indoor Fan is driven by a low speed.
At this point the wind speed is not controlled by the remote controller.
(When operated in the Sleeping Mode, the wind speed is set to the low speed as force.)
Caused by the remote controller.
Caused by other parts except
the remote controller
When the mark (
) is displayed in LCD
screen, replace battery.
Check the contact of CN-DISP 1 connector
When the detect switch (double key) inside the
remote controller door is fault, it is impossible to
operate temperature regulating(▲ / ▼) and wind
speed selecting.
Check DISP PWB Ass'y
-Voltage between CN1 ➀ - ➆ : DC +5V
Check the Display PWB Ass'y
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
• Check receiver ass'y
- 83 -
LGE Internal Use Only
Troubleshooting Guide
Trouble 3
The Compressor/Outdoor Fan are don't operate
Turn on the main power.
Operate Cooling Mode by setting the disired temperature of the remote controller
is less than one of the Indoor temperature by 1°C at least.
When in air circulation mode, compressor/outdoor fan is stopped.
Check the sensor for Indoor temperature is attatched as close as to be effected by the
themperature of Heat Exchange (EVA.)
When the sensor circuit for Indoor temperature and connector are in bad
Connection or are not engaged, Compressor/Outdoor fan is stopped.
• Check the related circuit of R02H(12.1K), R01H(1K), R04H(6.2K), R03H(1K), C01H(102),
C02H(102), Micom(pin No. , ).
• Check the Indoor temperature sensor is disconnected or not (about 10K at 25°C).
Check the Relay(RY-PWR, RY-START) for driving Compressor.
• Check the voltage between CN-CP(L) and CN-CP(N) of terminal to connect the
Outdoor (About AC220V / 240V).
• Check the related circuit of relay in Outdoor PCB Ass'y.
Check Point
Comp. ON
Comp. OFF
Between Micom(No. 71) and
GND
DC 5V
DC 0V
Between IC01M(No. 11) and
GND
DC 1V↓
DC 12V
Turn off main power.
Check the electrical wiring diagram of Outdoor side.
Check the open or short of connecting wires between Indoor and Outdoor.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 84 -
LGE Internal Use Only
Troubleshooting Guide
Trouble 4
When indoor Fan does not operate.
Turn off main power.
Check the connection of CN-FAN.
Check the Fan Motor.
Check the Fuse(AC250V, T2A).
Check the related circuit of indoor Fan Motor.
• The pin No. 38 of micom and the part for driving SSR.(Q01M)
• Check the related pattern.
• Check the SSR.
- SSR Open: Indoor Fan Motor never operate.
- SSR short: Indoor Fan Motor always operates in case of ON or OFF.
Turn on the main power
Check the SSR high speed operation by remote control.
(the Indoor Fan Motor is connected)
The voltage of Pin No 1(orange) and 3(black) of CN-FAN.
About AC 160V over
About AC 50V over
SSR is not damaged
Check SSR
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 85 -
LGE Internal Use Only
Troubleshooting Guide
Trouble 5
When the louver does not operate.
• Confirm that the vertical louver is normally geared with the shaft of Stepping Motor.
• If the regular torque is detected when rotating the vertical louver with hands ⇒ Normal
• Check the connecting condition of CN-U/D or CN0L/R Connector
• Check the soldering condition(on PCB) of CN-U/D or CN0L/R Connector
Check the operating circuit of the vertical louver
• Confirm that there is DC +12V between pin ➀ of CN-U/D, CN0L/R and GND.
• Confirm that there is a soldering short at following terminals.
- Between 1 , 2 , 3 and 4 of MICOM
- Between 17 , 18 , 19 and 20 of MICOM
- Between 5 , 6 , 7 and 8 of IC01M
- Between 4 , 5 , 6 and 7 of IC01M
If there are no problems after above checks.
• Confirm the assembly condition that are catching and interfering parts in the link of the
vertical louver
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LGE Internal Use Only
Troubleshooting Guide
4. General Information
■ Error Indicator (Indoor)
• The function is to self-diagnosis air conditioner and express the troubles if there is any trouble.
• Error mark is displayed on display window of indoor units and wired-remote controller, and LED of outdoor unit
control board.
• If more than two troubles occur simultaneously, lower number of error code is first displayed.
• After error occurs, if error is released, error LED is also released simultaneously.
1 digit
10 digit
■ Indoor Error
Error
code
01
Contents
Case of error
Indoor
Air sensor (open/short)
Open / Short
Status
Off
02
Inlet pipe sensor
Open / Short
Off
03
Communication(Indoor ↔ Wired R/Control)
Communication Poorly
Off
04
Drain pump/ Float switch
Float switch Open
Off
05
Communication(Indoor ↔ Outdoor)
Communication Poorly
Off
06
Outlet pipe sensor
Open / Short
Off
07
Different operation mode
Different operation mode
Off
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LGE Internal Use Only
Troubleshooting Guide
■ Error Indicator (Outdoor)
Outdoor Error
Ex) Error 21 (DC Peack)
LED01G
(RED)
2 Times
2 Times
2 Times
1 sec
1 sec
1 sec
1 Times
1Times
2 sec
2 sec
1Times
LED02G
(GREEN)
Error
code
LED01G
(Red)
Descriotion
LED02G
(Green)
Indoor
Status
21
DC Peak (IPM Fault)
2 times
1 time
Off
22
CT 2(Max CT)
2 times
2 times
Off
23
DC Link Low Volt.
2 times
3 times
Off
24
L/H press SW
2 times
4 times
Off
25
Low voltage / Over voltage
2 times
5 times
Off
-
-
-
65
Heatsink Th Error (Open/Short)
6 times
5 times
Off
67
Outdoor BLDC Fan Lock
6 times
7 times
Off
105
Comm. Error
(Main board <->Fan board)
10 times
5 times
Off
-
-
Outdoor Error
Ex) Error 26(DC Comp position Error)
LED03G
(Yellow)
Error
code
2 Times
2 Times
1 sec
1 sec
Descriotion
2 Times
LED03G
(Yellow)
Error Display
Time
21
DC PEAK (IPM Fault)
1 times
25 sec
26
DC Comp position Error
(No Position / Locking) Error
2 times
25 sec
52
Comm. Error
(Main micon <-> Sub micom)
3 times
25 sec
23
DC Link Low voltage Error
5 times
25 sec
40
CT Sensor Open/Short Error
6 times
-
60
A/D Option Error
7 times
-
29
Comp over current Error
8 times
25 sec
Copyright ©2007 LG Electronics. Inc. All right reserved.
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LGE Internal Use Only
Troubleshooting Guide
1) Troubleshooting CH01, CH02, CH06
Display
code
Title
01
Indoor air sensor
• Open / Short
• Soldered poorly
• Internal circuit error
Normal resistor : 10KΩ/ at 25°C (Unplugged)
Normal voltage : 2.5Vdc / at 25°C (plugged)
02
Indoor inlet pipe sensor
• Open / Short
• Soldered poorly
• Internal circuit error
Normal resistor : 5KΩ/ at 25°C (Unplugged)
Normal voltage : 2.5Vdc / at 25°C (plugged)
Indoor outlet pipe sensor
• Open / Short
• Soldered poorly
• Internal circuit error
Normal resistor : 5KΩ/ at 25°C (Unplugged)
Normal voltage : 2.5Vdc / at 25°C (plugged)
06
Cause of error
Check point & Normal condition
10kΩ
2.5Vdc
Ω
V
Check the resistance
Check the voltage
Check Point
1. Unplug the sensor on Indoor unit PCB.
2. Estimate the resistance of each sensor.
3. If the resistance of the sensor is 10KΩ/ 5KΩ at 25°C, then sensor is normal.
4. If the resistance of the sensor is 0 KΩ or ∞, then sensor is abnormal. → Change the sensor.
5. Plug the sensor on Indoor unit PCB and Power ON.
6. Estimate the voltage of each sensor.
7. If the voltage of the sensor is 2.5Vdc at 25°C, then sensor is normal.
8. If the resistance of the sensor is 0 or 5Vdc, then sensor is abnormal. → Repair or Change the PCB.
Copyright ©2007 LG Electronics. Inc. All right reserved.
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LGE Internal Use Only
Troubleshooting Guide
2) Troubleshooting CH03
Display
code
Title
03
Communication
Wired R/C
Cause of error
Wired R/C
12V
S
• Open / Short
• Wrong connection
Indoor Unit
GND
12V
S
• Connection of wire
• Main PCB Volt. DC12V
• Noise interference
CN-REMO
GND
12Vdc
12Vdc
V
V
Check the Volt.
Check point & Normal condition
Check the Volt.
Check Point
1. Check the wire connection. (Open / Short) → Repair the connection
2. Check the soldering state of connector. (Soldered poorly) → Repair or Change the PCB.
3. Check the volt. Of main PCB power source. (DC 12V, DC 5V) → Repair or Change the main PCB.
4. Check the installation of wired remote controller. (Noise interference) → Adjust the state of installation
Copyright ©2007 LG Electronics. Inc. All right reserved.
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Troubleshooting Guide
3) Troubleshooting CH04
Display
code
Title
04
Drain pump
/ Float switch
Cause of error
• Float switch Open.
(Normal : short)
Check point & Normal condition
• The connection of wire(Drain pump/ Float switch)
• Drain pump power input. (220V)
• Drain tube installation.
• Indoor unit installation. (Inclination)
CN Float
CN-D/PUMP
CN-Float
0Ω
Ω
Check the resistance
Check Point
1. Check the wire connection. (Open, Soldered poorly) → Repair the connection or change the PCB.
2. Check the resistance of float switch (Abnormal : Open, Normal : short) → Check the float switch.
3. Check the level of water
4. Check the volt. Of Drain pump power supply. (AC 230V) → Repair or Change the main PCB.
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LGE Internal Use Only
Troubleshooting Guide
4) Troubleshooting CH05, CH53
Display
code
05
/
53
Title
Title
Communication
(Indoor → Outdoor)
Cause of error
• Communication poorly
Check point & Normal condition
• Power input AC 220V. (Outdoor, Indoor)
• The connector for transmission is disconnected.
• The connecting wires are misconnected.
• The communication line is shorted at GND.
• Transmission circuit of outdoor PCB is abnormal.
• Transmission circuit of indoor PCB is abnormal.
Check Point
1. Check the input power AC230V. (Outdoor, Indoor unit)
2. Check the communication wires are correctly connected.
Adjust the connection of wire Confirm the wire of "Live",
"Neutral"
3. Check the resistance between communication line and GND.
(Normal : Over 2MΩ)
4. Check the connector for communication is correctly connected.
5. If one indoor unit is operated normally, outdoor PCB is no
problem.
Check the another indoor unit.
* CH05 is displayed at indoor unit, CH53 is displayed at
outdoor unit.
6. If all indoor unit is displayed CH05 but outdoor PCB not
display
CH53 : Check the CN_COM and CN_POWER is correctly
connected.
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Troubleshooting Guide
5) Troubleshooting CH21
Display
code
Title
Cause of error
• Instant over current
• Over Rated current
• Poor insulation of IPM
DC PEAK
(IPM Fault)
21
Check point & Normal condition
Comp
U
Resistance(Ω) at 20°C
Ω
V
Terminal
W
Comp
• An instant over current in the U,V,W phase
- Comp lock
- The abnormal connection of U,V,W
• Over load condition
- Overcharging of refrigerant
Pipe length.
Outdoor Fan is stop
• Poor insulation of compressor
Copper
pipe
5KD240XBA
5JD420XBB
U-V
1.843
1.08
V-W
1.893
1.12
W-U
1.812
1.09
Resistance(Ω) at 20°C
Ω
Terminal
Inverter Comp.
U-GND
2MΩ
V-GND
2MΩ
W-GND
2MΩ
Check Point
1. Check the wire connection. (U,V,W)
2. Check the load condition. (Refrigerant, Pipe length, ...) Adjust the load condition
3. Check the electricity leakage of the compressor. Normal : Over 2MΩ.
4. Check the resistance of compressor.
5. Check the IPM circuit.(Continue next page)
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Troubleshooting Guide
Troubleshooting CH21
Check the IPM (Measuring after Comp connector disconnect)
1) Test mode set diode mode(
)
P
W
N
V
U
Measuring method
Measuring method A
Measuring method B
Terminal
A
B
U
0.4~0.6V
0.4~0.6V
V
0.4~0.6V
0.4~0.6V
W
0.4~0.6V
0.4~0.6V
P
N W V
RD(+)
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BK(-)
- 94 -
P
U
N W V
U
BK(-)
RD(+)
LGE Internal Use Only
Troubleshooting Guide
6) Troubleshooting CH22
Display
code
22
Title
Max. C/T
Cause of error
Check point & Normal condition
Malfunction of compressor
Blocking of pipe
Low voltage input
Refrigerant, pipe length, blocked, …
Over current
V
-
Check Point
1. Check the power source.(200~240V)
2. Check the fan operation is right.
+
-
+
-
+
3. Check the current.
4. Check the install condition.
5. Check the internal circuit. (C/T, Diode, Resistor)
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Troubleshooting Guide
7) Troubleshooting CH23
Display
code
23
Title
DC Link Low voltage
Cause of error
• DC Link volt is below
300V
Check point & Normal condition
• Check point & Normal condition
• Check the TAB1 is connect.
• At not operating : DC Link voltage(260V )
• At Comp operating : DC Link voltage(500V )
Check Point
1. Check the Tab1 connection condition. (Refer to outdoor wiring diagram)
2. Check the CN_COIL(IN), CN_COIL(OUT) connection condition.
3. Check the DC Link voltage at not operating(260V )
4. Check the DC Link voltage at Comp operating(500V )
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Troubleshooting Guide
8) Troubleshooting CH24, CH25
Display
code
Title
24
Press S/W Open
25
Input voltage
Cause of error
Check point & Normal condition
• Low / High press
S/W open.
• Check the connection of “CN_Press”.
• Check the components.
• Abnormal Input voltage
(140Vac , 300Vac )
Check the power source.
• Check the components.
TRANS1
50Hz, DC12V
Check Point
• CH 24
• CH 25
1. Check the connection of "CN_PRESS"
1. Check the power source.
2. Check the component of press switch.
2. Check the components
3. Check the install condition for over load.
❈ Trans1
4. Check the SVC V/V open.
- Primary resistance : 2.27kΩ ±10%
5. Check the leakage of refrigerant.
- Secondary resistance : 9Ω ±10%
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Troubleshooting Guide
9) Troubleshooting CH26
Display
code
Title
26
DC Compressor
Position
Cause of error
• Compressor
Starting fail error
Check point & Normal condition
• Check the connection of comp wire “U,V,W”
• Malfunction of compressor
• Check the component of “IPM”, detection parts.
Check Point
1. Check the connection condition of PCB.
2. Check the connection condition of Comp. U,V,W wire.
3. Check the connection condition of CN_IPM(P), CN_IPM(N).
4. Check the comp resistor and insulation resistance .
5. Check the IPM.
6. Check the pressure of refrigerant.
7. Check the Service Valve Open.
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Troubleshooting Guide
10) Troubleshooting CH32
Display
code
32
Title
D-pipe (Inverter)
temp. high
(105°C )
Cause of error
• Discharge sensor
(Inverter) temp. high
Check point & Normal condition
• Check the discharge pipe sensor for INV.
• Check the install condition for over load.
• Check the leakage of refrigerant.
• Check the Service Valve open.
• Check the outdoor fan.
D-Pipe temp.
Toff(105) °C
T2(95) °C
T1(90) °C
COMP Frequency
Normal
(Hz)
LEV Openness
(Pulse)
Normal
Normal
OFF
Normal
OFF Control
Check Point
1. Check the install condition for over load.
2. Check the Service Valve open.
3. Check the outdoor fan operating condition
4. Check the leakage of refrigerant.
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Troubleshooting Guide
11) Troubleshooting CH40
Display
code
Title
40
C/T
Sensor Error
Cause of error
Check point & Normal condition
• Initial current error
• Malfunction of current detection circuit.
(Open / Short)
• The voltage of "C01N" Is 4.0Vdc(25A) .
Figure 1.
V
Figure 2.
DC 2.5V
V
Check Point
1. Check the input voltage.(200~240V)
2. Check the voltage of C01N at not operating.(0V)
3. Check the voltage of Figure2. red point at not operating.(2.5V)
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Troubleshooting Guide
12) Troubleshooting CH41, CH44, CH45, CH46, CH47, CH65
Display
code
Title
41
D-pipe sensor (Inverter)
• Open / Short
• Soldered poorly
• Internal circuit error
• Normal resistor : 200KΩ / at 25°C (Unplugged)
• Normal voltage : 4.5Vdc / at 25°C (plugged)
44
Air sensor
• Open / Short
• Soldered poorly
• Internal circuit error
• Normal resistor : 10KΩ / at 25°C (Unplugged)
• Normal voltage : 2.5Vdc / at 25°C (plugged)
45
Condenser Pipe sensor
• Open / Short
• Soldered poorly
• Internal circuit error
• Normal resistor : 5KΩ / at 25°C (Unplugged)
• Normal voltage : 2.5Vdc / at 25°C (plugged)
46
Suction Pipe sensor
• Open / Short
• Soldered poorly
• Internal circuit error
• Normal resistor : 5KΩ / at 25°C (Unplugged)
• Normal voltage : 2.5Vdc / at 25°C (plugged)
D-pipe sensor (Constant)
• Open / Short
• Soldered poorly
• Internal circuit error
• Normal resistor : 200KΩ / at 25°C (Unplugged)
• Normal voltage : 4.5Vdc / at 25°C (plugged)
Heat sink sensor
• Open / Short
• Soldered poorly
• Internal circuit error
• Normal resistor : 10KΩ / at 25°C (Unplugged)
• Normal voltage : 2.5Vdc / at 25°C (plugged)
47
65
Cause of error
Check point & Normal condition
Check Point
1. Estimate the resistance of each sensor.(Unplugged)
2. Estimate the voltage of each sensor.(Plugged)
3. If the resistance of the sensor is 0 kΩ or ∞, then sensor is abnormal.
Ω
If the voltage of the sensor is 0 V or 5Vdc, then sensor is abnormal.
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Troubleshooting Guide
13) Troubleshooting CH51, CH60
Display
code
Title
51
60
Cause of error
Check point & Normal condition
Over capacity
• Over capacity
• Check the indoor unit capacity.
• Check the combination table.
Over capacity
• Check sum error
• Check the PCB ASM P/No.
• Check the poor soldering.
Model
Max. single indoor unit capacity
AUUW368C
AUUW368C1
40
AUUW428C
46
AUUW488C
52
AUUW608C
65
Check Point
• CH 51
• CH 60
1. Check the indoor unit capacity.
1. Check the insertion condition of EEPROM.
2. Check the poor soldering
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Troubleshooting Guide
14) Troubleshooting CH54
Display
code
Title
54
3-phase wrong wiring
of main outdoor unit
Cause of error
• 3-phase wrong wiring of
outdoor unit (Reverse
Phase /omission of
phase)
Check point & Normal condition
• Abnormal Main PCB
• No connection of CN_Phase
• Changed R, S, T connection order
Check Point
1. Check the connection condition of R,S,T wire.
2. Check the connection condition of CN_Phase.
3. Check the outdoor main fuse.
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LGE Internal Use Only
Troubleshooting Guide
15) Troubleshooting CH61, CH62
Display
code
Title
Cause of error
61
Condenser pipe sensor
temp. high
• Condenser pipe sensor
detected high
temp.(65°C)
62
Heat sink sensor
temp. high
Check point & Normal condition
• Check the load condition.
• Check the sensor of Condenser pipe sensor.
• Heat sink sensor detect- • Check the fan is locked.
ed high temp.(95°C)
• Check the sensor of heat sink.
Heat Sink Temp
95°C
restart
80°C
70°C
55°C
50°C
COMP
Hz
FAN
Normal
OFF
5Hz
5Hz
Down Normal Down
OFF
ON
OFF
Check Point
• CH 61
• CH 62
1. Check the install condition for over load.
(Refrigerant, Pipe length, Blocked, …)
1. Check the fan is locked.
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2. Check the sensor of heat sink.
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LGE Internal Use Only
Troubleshooting Guide
16) Troubleshooting CH67, CH105
Display
code
Title
Cause of error
67
Outdoor fan
lock
• Outdoor fan is not operating
• Check the fan condition.
• Check the fan connector
105
Communication error
between main PCB and
fan PCB
• Communication error
between main PCB
and fan PCB
• Short or fusing of communication line
• Poor outdoor unit PCB
• Power input when the DC link capacitor discharges
Check point & Normal condition
Check Point
• CH 67
• CH 105
1. Check the install condition for fan.
1. Is communication line between the main PCB and the
fan PCB normal?
2. Is the communication LED on?
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LGE Internal Use Only
Electronic Control Device
IV. Electronic Control Device
Ceiling Cacsette Type...................................................................................107
Ceiling Duct Type..........................................................................................108
Celing Suspended ........................................................................................109
Outdoor Unit..................................................................................................110
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LGE Internal Use Only
Electronic Control Device
Ceiling Cacsette Type
58
6871A10209
B
A
Main P.C.B ASM
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Electronic Control Device
Ceiling Duct Type
(BG/BR Series)
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Electronic Control Device
Ceiling Suspended
(VK/VL Series)
ASM: 6871A10186
ASM: 6871A10025
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LGE Internal Use Only
Electronic Control Device
Outdoor Unit
1) Component side
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LGE Internal Use Only
Electronic Control Device
2) Solder side
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LGE Internal Use Only
Schematic Diagram
V. Schematic Diagram
Ceiling Cacsette Type...................................................................................113
Ceiling Duct Type..........................................................................................114
Celing Suspended ........................................................................................115
Outdoor Unit..................................................................................................116
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LGE Internal Use Only
Schematic Diagram
Ceiling Cassette Type
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Only for training and service purposes
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LGE Internal Use Only
Schematic Diagram
Ceiling Duct Type
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Schematic Diagram
Ceiling Suspended
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LGE Internal Use Only
Schematic Diagram
Outdoor Unit
C(1)
C(2)
C(3)
C(4)
L
L
N
G
G
N
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Functional Description
VI. Functional Description
Ceiling Cacsette Type...................................................................................118
Ceiling Duct Type..........................................................................................120
Celing Suspended ........................................................................................123
Outdoor Unit..................................................................................................126
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Ceiling Cassette Type
Ceiling Cassette Type
The function of main control
■ Auto Swing Control
• This function is to swing the louver up and down automatically.
■ Soft-Dry Operation
• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of
already being set to the best speed for Dry Operation by microcontroller control.
■ Cooling Mode Operation
• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote controller and the operation diagram is as following
Intake Air Temperature
Thermo. On
(SET TEMPERATURE +0.5°C)
Thermo. Off
(SET TEMPERATURE -0.5°C)
INDOOR FAN
Selected
Speed
More than
More than
3 minutes
3 minutes
Low
Selected
Speed
■ Swirl Swing Control
Selected
Speed
Low
Vane 2
Vane 2, 4 is almost vane closed while vane1, 3 is opened.
Vane 1, 3 and vane 2,4 turn over minutely
Vane 1
Vane 3
Vane 4
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Ceiling Cassette Type
■ Heating Mode Operation
The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Indoor unit
35°C
Heat-Exchanger
temperature
32°C
A
29°C
21°C
17°C
Intake Air Temperature
3min
Setting Temperature
+4°C(Unit Sensing)
+2°C(Remo Sensing)
(Thermo OFF)
Setting Temperature
+2°C(Unit Sensing)
0°C(Remo Sensing)
(Thermo ON)
Minimum
3min
1min
COMP
ON
ON
Outdoor fan
Setting
Lo
fan
Off Low Low
spped
Indoor fan
B Low fan during 10sec
1min
OFF
OFF
Setting
fan
spped
Low
4way valve
Low
Off
ON
ON
Off
Low
Setting
fan
spped
ON
■ Hot-start Control
The indoor fan does no rotate until the evaporator piping temperature will be reached to 21°C.
The operation diagram is as following.
Pipe
temperature
32 °C
29 °C
23 °C
21 °C
17 °C
Indoor fan
speed
COMP
LO
LOW
OFF
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LOW
SELECTED
FAN
LOW
LOLOW
ON
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LGE Internal Use Only
Ceiling Duct Type
Ceiling Duct Type
The function of main control
■ 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)
INDOOR FAN
COMPRESSOR
More than
More than
3 minutes
3 minutes
Selecting
fan speed
Low
Selecting
fan speed
Low
Selecting
fan speed
ON
OFF
ON
OFF
ON
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Ceiling Duct Type
■ Heating Mode Operation
The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Indoor unit
40°C
Heat-Exchanger
temperature
33°C
A
30°C
27°C
20°C
Intake Air Temperature
3min
Setting Temperature
+4°C(Unit Sensing)
+2°C(Remo Sensing)
(Thermo OFF)
Setting Temperature
+2°C(Unit Sensing)
0°C(Remo Sensing)
(Thermo ON)
ON
ON
Outdoor fan
Indoor fan
Minimum
3min
1min
COMP
B Low fan during 10sec
Setting
Lo
fan
Off Low Low
spped
1min
OFF
OFF
Low
4way valve
Setting
fan
spped
Low
Off
ON
ON
Off
Low
Setting
fan
spped
ON
• Compressor-off interval : - A 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.
- B For eluminating latent heat-loss, fan operates at low speed for 10 seconds periodically.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 121 -
LGE Internal Use Only
Ceiling Duct Type
■ Hot-Start Control
• The indoor fan does not rotate until the indoor unit Hex-Exchanger temperature reaches 27°C.
• The operation diagram is as following.
Indoor unit
Heat-Exchanger
temperature
33°C
27°C
20°C
1min
Compressor
Outdoor fan
Indoor fan
1min
ON
ON
Off
Low
Setting fan
spped
Low
Setting fan
spped
ON
4way Valve
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Off
- 122 -
LGE Internal Use Only
Ceiling & Floor
Ceiling & Floor
The function of main control
■ 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)
INDOOR FAN
COMPRESSOR
More than
More than
3 minutes
3 minutes
Selecting
fan speed
Low
Selecting
fan speed
Low
Selecting
fan speed
ON
OFF
ON
OFF
ON
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 123 -
LGE Internal Use Only
Ceiling & Floor
■ Heating Mode Operation
The unit will operate according to the setting by the remote controller and the operation diagram is shown as following.
Indoor unit
35°C
Heat-Exchanger
temperature
32°C
A
29°C
21°C
17°C
Intake Air Temperature
3min
Setting Temperature
+4°C(Unit Sensing)
+2°C(Remo Sensing)
+1°C(Flore Install)
(Thermo OFF)
Setting Temperature
+2°C(Unit Sensing)
0°C(Remo Sensing)
-1°C(Flore Install)
(Thermo ON)
Setting
Lo
fan
Off Low Low
spped
1min
OFF
OFF
ON
ON
Outdoor fan
Indoor fan
Minimum
3min
1min
COMP
B Low fan during 10sec
Low
4way valve
Setting
fan
spped
Low
Off
ON
ON
Off
Low
Setting
fan
spped
ON
• Compressor-off interval : - A While the indoor Heat-Exchanger temperature is higher than 35°C, fan operates
at low speed, when it becomes lower than 35°C fan stops.
- B For eluminating latent heat-loss, fan operates at low speed for 10 seconds periodically.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 124 -
LGE Internal Use Only
Ceiling & Floor
■ Hot-Start Control
• The indoor fan does not rotate until the indoor unit Hex-Exchanger temperature reaches 21°C.
• The operation diagram is as following.
Indoor unit
Heat-Exchanger
temperature
32°C
21°C
17°C
1min
Compressor
Outdoor fan
Indoor fan
ON
ON
Off
Low
Setting fan
spped
Setting fan
spped
ON
4way Valve
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Low
- 125 -
LGE Internal Use Only
Outdoor Units
Outdoor Units
1.Basic control
1.1 Normal operation
Cooling mode
Heating mode
Stop state
Compressor
Step Control
Step Control
stop
Fan
Step Control
Step Control
After 30sec, Off
EEV
PID Control
PID Control
After 60sec, Full Open
4 way valve
Off
On
After 30sec, Off
❈ PID : Proportional Integrate Derivative
1.2 Compressor control
Frequency Control:Frequency that corresponds to a room capacity will be determined according to the room
temperature, outdoor temperature and the difference in the temperature of a room and the temperature set by
the remote controller.
Comp_Step = (Step_base+Long piping compensation) x ∆Step_TAO x ∆ Step_TAI x ∆ Step_DTAI
Step_base
Standard frequency step by ∑Qj (Summation of capacity code)
Long piping
Comp. Step compensation by setting long piping
∆Step_TAO
step compensation by TAO (Outdoor temp.)
∆Step_TAI
step compensation by TAI (Indoor temp.)
∆Step_DTAI
Step Compensation of temperature difference Indoor Temp. and Setting Temp.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 126 -
LGE Internal Use Only
Outdoor Units
❈ Target frequency step (Step_base) exceeds maximum step, the Step_base value follows the maximum step
value.
❈ The compressor get the minimum step in case Step_base value is lower than the minimum step of operating
capacity.
Compressor operation range
Control
Capacity
Inverter
Compressor
Load
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 127 -
LGE Internal Use Only
Outdoor Units
1.3 EEV Control
1) Superheating control (Cooling Mode)
- Superheating
: T superheating = Tout – Tin = 2°C
- LEV pulse up
: T superheating > 2°C
- LEV pulse down : T superheating < 2°C
2) Target Temperature Control (Cooling mode)
- In case, outdoor temperature > 39°C
- Target superheating : T target = Tin = 18°C
- LEV pulse up
: T target < 18°C
- LEV pulse down
: T target > 18°C
3) Target Temperature Control (Heating mode)
- LEV pulse up
: T target > Tout
- LEV pulse down
: T target < Tout
4) LEV pulse change Value
8 pulse (P1-P0 > 4°C)
4 pulse (4°C ≥P1-P0 > 3°C)
2 pulse (3°C ≥P1-P0 > 1°C)
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 128 -
LGE Internal Use Only
Outdoor Units
1.4 Fan control
Control logic of outdoor fan depends on Outdoor temperature.
(1) Single fan model
(2) Two fan model(36k)
Step_Fan
Fan A
2
High
1
Low
0
X
Cooling Single FAN
Step_Fan + 1
Step_Fan ( 2 )
Step_Fan
4
3
2
1
0
Outdoor
temperature
Cooling two FAN
Step_Fan + 1
38°C
Step_Fan
Step_Fan - 1
22°C
Step_Fan - 2
10°C
Heating Single FAN
Fan (B)
High
Low
X
X
X
Step_Fan + 2
41°C
28°C
Step_Fan - 1
Fan (A)
High
Low
High
Low
X
Step_Fan - 3
Outdoor
temperature
Heating two FAN
Step_Fan - 2
Step_Fan - 1
20°C
Step_Fan - 1
Step_Fan ( 4 )
14°C
Step_Fan
4°C
Step_Fan + 1
Step_Fan + 1
-3°C
Step_Fan + 2
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 129 -
LGE Internal Use Only
Outdoor Units
(3) Two fan model(42k, 48k, 60k)
RPM step = Load_Step (42k: 9/9 step, 48k~60k:10/12 step)
+ Step Compensation by Outdoor Temp.
+ Step Compensation of temperature difference Indoor Temp. and Setting Temp
STEP TABLE
RPM(Upper) RPM(Lower)
STEP-1
200
OFF
STEP-2
200
200
STEP-3
250
250
STEP-4
300
300
STEP-5
400
400
STEP-6
500
500
STEP-7
600
600
STEP-8
700
700
STEP-9
750
750
STEP-10
800
800
STEP-11
850
850
STEP-12
900
900
STEP-13
950
950
Min. RPM
200
200
Max. RPM
950
950
Step Compensation by Outdoor Temp.
(Cooling)
Outdoor
2 FAN
Temp.
45°C
41°C
38°C
28°C
(Heating)
Outdoor
Temp.
Step_Fan - 4
Step_Fan + 3
Step_Fan + 2
Step_Fan + 1
Step_Fan
Step_Fan - 2
24°C
Step_Fan - 4
18°C
Step_Fan - 6
2 FAN
26°C
20°C
Step_Fan - 3
Step_Fan - 2
14°C
4°C
Step_Fan
Step_Fan + 1
-1°C
Step_Fan + 3
-7°C
Step_Fan + 4
14°C
Step_Fan - 7
9°C
Step_Fan - 8
2°C
Step_Fan - 8
-5°C
Step_Fan - 8
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 130 -
LGE Internal Use Only
Outdoor Units
2. Special control
2.1 Defrost control
2.1.1 Starting to the defrosting operation
1) Defrost operation will be start when the conditions below are matched
a) Accumulation time of operation and the period after completion of defrost = 35 min.
b) After 10 minutes from re-starting the compressor .In case of being over 35 minutes of accumulated operating
time, defrosting operation starts after 10 minutes.
c) Piping temperature of the outdoor heat exchanger maintain below defrost starting temperature for 4 minutes
after 35 minutes continuous operation.
d)In case of passing 10 minutes after oil recovery operation
2) Outdoor piping temperature is below than –6 (Option) °C for starting defrosting operation.
2.1.2 Defrosting Control Algorithm
1) Lowering the compressor frequency when starts the defrosting operation.
Constant speed compressor is ON after 10 seconds from the arrival time of 30 Hz (Option) frequency and is
speed up its revolution till 100 Hz (Option)
2) Every LEV have 350 pulse (Option) of opening when starts defrosting operation.
3) Reversing valve is OFF after 5 seconds from arriving the compressor operating frequency of 30 Hz and then
fans of indoor units turn OFF.(including the indoor unit with being OFF except the remote controller is being
OFF)
4) After 5 seconds minutes from the time arriving 30 Hz, fans of outdoor unit turn OFF and Hot Gas bypass/Oil
separator valve turn ON.
2.1.3 Control algorithm of defrost completion
1) Frequency of compressor lowering to 30 Hz and maintain constant speed operation with 30 Hz for 75 seconds
and then stating operation. If the constant speed compressor is OFF, it will be receive OFF signal after 5 seconds from the arrival time of 30 Hz.
2) The LEV will open with the standard previous pulse after 5 seconds from the time of 30 Hz.
3) Reversing valve is ON after 15 seconds from the time of 30 Hz of compressor frequency.
4) Fan of outdoor unit is ON with high speed and maintain it after 5 seconds from the time of 30Hz.
5) Hot Gas bypass valve/Oil separator bypass valve make OFF after 75 seconds from the time of 30Hz.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 131 -
LGE Internal Use Only
Outdoor Units
2.2 Low ambient control
Low ambient cooling case : In this situation outdoor fan works in ON/OFF control.
: If the pipe temperature 0°C and it is falling rapidly in that case compressor will run for 5 min & then it will go in
low ambient control. (❈ Temp. value can be different for each model.)
❈ After the system is stopped by CT cut or heat sink cut-off then the cycle returns to the normal condtiond control.
Outdoor pipe temp
(T2 = 0)°C
(T1 = 0)°C
O/D fan
Set speed
Off
Set speed
Off
Set speed
2.3 Oil return control
2.3.1 Operating Contion
1) When the continuous running time is over 3hr.(option), oil returning operation is made for 3min.
In case of the initial operation, oil returning operation is made, after completing initial operation.
2) After defrost and oil returning operation, the continuous running time is resetted.
2.3.2 Operation Process
1) EEV-Full open, Hot gas bypass valve-On
2) Compressor Step-70Hz (Option)
3) Reversing valve-Off(Process of Off/On, follows defrost operating.)
4) Outdoor Fan-Low step
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 132 -
LGE Internal Use Only
Outdoor Units
2.4 Sump heating control
2.4.1 Inverter compressor sump heating fuction
: A function protecting inverter compressor from damages, by increasing oil viscosity in low outdoor
temperature.
For the control,compressor operates in low frequencies.
Operating condition :in case of the following 3 conditions are fulfilled at the same time.
- Outdoor temperature, D-pipe temperature, Heat sink temperature : below 0°C,
OD temp. < 0 ~ -10°C
starting
Comp.
15Hz
starting
LEV
Opening target : 0.7
0 sec.
90~300 sec.
Time (option)
❈ All Model is fitted with sump heater.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 133 -
LGE Internal Use Only
Outdoor Units
3. Protection control
3.1 Discharge Temperature control
3.1.1 Discharge pipe control for Inverter compressor
1) There can be two situations
(a) Sensor is failed (error code for sensor failure will be generated)
(b) Abnormal high temperature discharge temperature (error code for high discharge will be generated)
Both cases unit will stop.
2) Compressor working
(a) If discharge pipe temperature < T1 No limitation on compressor frequency
(b) T2 ≤ discharge pipe temperature < T off (Hysteresis control) Compressor frequency down by 5Hz and
expansion valve up by 10 pulse in every 1 min.
(c) Discharge pipe temperature ≥ Toff Compressor will be off
System will stop if this situation occurs 5 times in 1 hour and error code will be generated.
D-Pipe temp
Toff(105)°C
T2(95)°C
T1(90)°C
COMP
Hz
Set
5 Hz
Down
Set
5 Hz
Down
Expansion
valve
Set
10
Pulse Up
Set
10
Pulse Up
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 134 -
OFF
Stop control
Set
LGE Internal Use Only
Outdoor Units
3.1.2 Discharge pipe control for constant compressor
1) There can be two situations
(a) Sensor is failed (error code for sensor failure will be generated)
(b) Abnormal high temperature discharge temperature (error code for high discharge will be generated)
Both cases unit will stop.
2) Compressor working
(a) If discharge pipe temperature < T1 Compressor ON, LEV on-time control
(b) T2 ≤ discharge pipe temperature < Toff (Hysteresis control) Expansion valve up by ßpulse every 1 min.
If LEV is in the starting control it will follow it as it is.
(c) Discharge pipe temperature ≥ Toff Compressor will be OFF
System will stop if this situation occurs 5 times in 1 hour and error code will be generated.
Toff(105)°C
D-Pipe temp
T2(95)°C
T1(90)°C
COMP
Step
Expansion
valve
ON
On-time
control
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
OFF
10
Pulse
Up
- 135 -
Stop
ON
On time
control
LGE Internal Use Only
Outdoor Units
3.2 Inverter Protection control(1)
3.2.1 Function
: Controlling total power current to protect power semiconductor devices from burn-out by the low current
(including connecting mistake) and over current.
3.2.2 Operating process
1) Detection : check the output DC voltage of Current Transformer(CT).
2) Current Transformer Sensing Error
a) In initial power input, if the CT output is over 4.0V (25A) it shows Self-Diagnosis
Error Mode 40 (defect in CT sensing)
3) CT 1 detection :
a) If total current exceeds CT1 value.reduce 1 step of operating Hz.
- Step down 10Hz from current step.
- If new Hz is below (cooling : Fc min,, heating :Fh min), then turn off the compressor.
b) After step down,if the total current exceed i1 for more than 5 sec. then step down 1 more step.
c) If the current continue below i1 for more than 1 min.,return the Hz to setting Hz.
4) CT 2 detection :
a) If total current exceeds CT2 turn off compressor.
And after 3 min turn on the compressor and check the current again.
b) If CT2 occurs 5 times in 1 hour,stop the operation and shows Self-Diagnosis Error Mode 22
Model
cooling
(CT 1)
heating
(CT 1)
CT 2
36k
8A
9A
10A
48~60k
11A
11A
12A
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 136 -
LGE Internal Use Only
Outdoor Units
3.3 Inverter Protection control(2)
3.3.1 Function
: Power module failure protection by checking the temperature of heat sink.
There is a temperature sensor for checking the heat sink temperature.
3.3.2 Heat sink sensor failure error
Short Check : if temperature ≥130°C
Open Check : if temperature < - 30°C
System will go in self diagnosis (error 65) is displayed and product stops.
3.3.3 Heat sink temperature control
a) Heat sink temperature < T2
: No limitation on compressor frequency
b) T2 ≤ heat sink temperature < Toff : Compressor frequency down by 5 Hz
c) Heat sink temperature ≥ Toff
: Compressor will be off.
System will stop if this situation occurs 5 times in 1 hour and error code will be generated also self diagnosis will
start.
If high temperature situation occurs 5 times in 1 hr system counts 1 error and after that 4 times if this situation
occurs system stops and give error code.
If the temperature reached Toff condition system will count 5 times after that and system will stop with error
code.
Heat Sink temp
Toff=85°C
T2=75°C
T1=70°C
COMP
Hz
Set
frequency
5 Hz
Down
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Set
frequency
- 137 -
5 Hz
Down
OFF
Set
frequency
LGE Internal Use Only
VII. Exploded View
Indoor Unit ..................................................................................................139
Outdoor Unit .................................................................................................148
Panel Assembly, Front .................................................................................152
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 138 -
LGE Internal Use Only
Indoor Unit
Ceiling Cassette Type
ATNH-DL
249951
266090
268711
159830
354211B
130411
354211A
552111
352118
330870
158591
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 139 -
266012
LGE Internal Use Only
130411
W0CZZ
346810
359012
130911A
352150B
130911B
267110
352150A
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 140 -
LGE Internal Use Only
Ceiling Concealed Duct Type
ABNH-HL, ABNH-GL
336600A
336600B
359012A
346810
359012A
336600A
336600B
W0CZZ
267110
354210
249951
268711B
152302
552111
352118
330870
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 141 -
LGE Internal Use Only
330870
336600A
336600B
354210
359012A
346810
W0CZZ
268711B
336600A
249951
336600B
152302
267110
ABNH-RL
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 142 -
LGE Internal Use Only
Ceiling Suspended
AVNH-LL
330860
147581B
237202
147581A
159830
249310
146811
137211
135310
135303
354212
135515A
352118
W0CZZ
W3110
268711B
267110
346810A
336600B
359012
268711A
336600A
249951
567480A
567480B
567480C
135515B
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 143 -
LGE Internal Use Only
AVNH-KL
330860
237202
147581
159830
249310
146811
137211
135303
135310
354212
135515A
352118
W0CZZ
W3110
268711B
267110
346810A
336600B
359012
346810B
268711A
336600A
249951
567480A
567480B
567480C
135515B
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 144 -
LGE Internal Use Only
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
435301
349480
435512
566000A
552116
552117
566000B
552114
552112
561410A
437211
559010
552111
546810B
546810A
349600
552204
561410B
552200
661400
- 145 430411
566001
554160
550140
261704
447910
268711D
649950
554031
553000
268711C
W0FZZ
W6200
W0CZZ
137213A
567480B
567480A
435300
137213B
552203B
552203A
435511
Outdoor Unit
Model No.: AUUW368C / AUUW368C1
LGE Internal Use Only
437210
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 146 -
137213
435511
435301
559010
435512
546810
546810
268711C
268711D
430411
447910
349600
649950
554160
552114
566000A
548490
W0FZZ
552203B
552203A
561410A
554031
566000B
552116
W6200
268711A
W6631
261704
566001
554031
561410B
552204
437212
552200
661400
55211G
552115
352114
567480B
567480A
Model No.: AUUW428C/AUUW488C/AUUW608C
LGE Internal Use Only
Panel Assembly, Front
PT-HDA1/C1
146811
268712
152312
135314
135802
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
137211
- 147 -
LGE Internal Use Only
P/NO : MFL30301501
JANUARY, 2008
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