LG ATNC186ELAA User manual

LG
Universal System
Air Conditioner
SERVICE MANUAL
LG
CAUTION
website http://www.lgservice.com
e-mail http://www.lgeservice.com/techsup.html
• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.

2Universal System Air Conditioner
TABLE OF CONTENTS
Table of contents Page
1. Models List.......................................................................................................................3
2. Model Number Nomenclature..........................................................................................4
3. Safety Precautions...........................................................................................................5
4. Feature & Benefits ...........................................................................................................9
5. List of Functions.............................................................................................................13
6. Function of Remote Control...........................................................................................16
7. Specifications.................................................................................................................21
8. Dimensional Drawings ...................................................................................................33
9. Wiring Diagrams.............................................................................................................43
10. Refrigerant Cycle Diagrams.........................................................................................52
11. Electrical Data..............................................................................................................54
12. Operation Range..........................................................................................................55
13. External Static Pressure & Air flow ..............................................................................56
14. Installation....................................................................................................................60
15. Electronic Control Device.............................................................................................78
16. Schematic Diagram......................................................................................................81
17. Exploded View and Replacement Parts List ................................................................85

Models List
Service Manual 3
Nominal Capacity Indoor Units Outdoor Units Power Supply
kW Btu/h Type Model Name Model Name Ø,V,Hz
Ceiling Cassette ATNC186ELAA
Ceiling Cassette ATNC186ELCA
5.3 18K Ceiling Concealed Duct ABNC186HLAA AUUC186A/AB
Ceiling & Floor AVNC186BLAA
Ceiling Cassette ATNC246FLAA
Ceiling Cassette ATNC246FLCA
7.0 24K Ceiling Concealed Duct ABNC246HLAA AUUC246A/AB 1Ø, 220-240V, 50Hz
Ceiling & Floor AVNC246BLAA
Ceiling Cassette ATNC306FLAA
Ceiling Cassette ATNC306FLCA
8.8 30K Ceiling Concealed Duct ABNC306GLAA AUUC306A/AB
Ceiling & Floor AVNC306BLAA
Ceiling Cassette ATNC368DLAA
10.6 36K Ceiling Cassette ATNC368DLCA AUUC368A/AB
Ceiling Concealed Duct ABNC368GLAA
Ceiling Cassette ATNC488DLAA
14.1 48K Ceiling Cassette ATNC488DLCA AUUC488A/AB 3Ø, 380-415V, 50Hz
Ceiling Concealed Duct ABNC488ELAA
Ceiling Cassette ATNC608DLAA
17.6 60K Ceiling Cassette ATNC608DLCA AUUC608A/AB
Ceiling Concealed Duct ABNC608ELAA
1.1 Cooling Only
Ceiling Cassette ATNH186ELAA
Ceiling Cassette ATNH186ELCA
5.3 18k Ceiling Concealed Duct ABNH186HLAA AUUH186A/AB
Ceiling & Floor AVNH186BLAA
Ceiling Cassette ATNH246FLAA
Ceiling Cassette ATNH246FLCA
7.0 24k Ceiling Concealed Duct ABNH246HLAA AUUH246A/AB 1Ø, 220-240V, 50Hz
Ceiling & Floor AVNH246BLAA
Ceiling Cassette ATNH306FLAA
Ceiling Cassette ATNH306FLCA
8.8 30k Ceiling Concealed Duct ABNH306GLAA AUUH306A/AB
Ceiling & Floor AVNH306BLAA
Ceiling Cassette ATNH368DLAA
10.6 36k Ceiling Cassette ATNH368DLCA AUUH368A/AB
Ceiling Concealed Duct ABNH368GLAA
Ceiling Cassette ATNH488DLAA 3Ø, 380-415V, 50Hz
14.1 48k Ceiling Cassette ATNH488DLCA AUUH488A/AB
Ceiling Concealed Duct ABNH488ELAA
Ceiling Cassette ATNH608DLAA
17.6 60K Ceiling Cassette ATNH608DLCA AUUH608A/AB
Ceiling Concealed Duct ABNH608ELAA
Nominal Capacity
Indoor Units Outdoor Units Power Supply
kW Btu/h Type Model Name Model Name Ø,V,Hz
1.2 Heat Pump
Models List

Model Number Nomenclature
4Universal System Air Conditioner
2.1 Indoor Units
2.2 Decoration panel (For Ceiling Cassette Models)
2.3 Outdoor Units
A T N H 1 8 6 E L A A
Serial Number
Functions
A : Basic C : Plasma Air Purifier(Optional)
Look : Basic
Chassis Name
Electrical Ratings
6:1Ø,220-240V,50Hz 8:3 Ø,380-415V,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
R410A Universal Indoor Unit
ATN : Universal Ceiling Cassette Type Indoor Unit
ABN : Universal Ceiling Concealed Duct Type Indoor Unit
AVN : Universal Ceiling & Floor Type Indoor Unit
A U U H 1 8 6 A
Serial Number
Low Ambinent(Optional)
Electric Standard (Phase, Volts, Freq)
6:1Ø,220-240V,50Hz 8:3Ø,380-415V,50Hz
Nominal Cooling Capacity in Btu/h
Model Type
C : Cooling Only H : Heat Pump
R410A Universal Outdoor Unit
B
P T - H E A
Functions
A: Basic C:For Indoor Unit with Plasma Air Purifier.(Optional)
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
2.1 Indoor Units
Model Number Nomenclature

Safety Precautions
Service Manual 5
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must
be followed.
■Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
■Meanings of symbols used in this manual are as shown below.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
■Installation
Be sure not to do.
Be sure to follow the instruction.
Do not use a defective or under-
rated circuit breaker. Use this
appliance on a dedicated circuit.
•There is risk of fire or electric
shock.
Always ground the product.
•There is risk of fire or electric
shock.
Install the panel and the cover
of control box securely.
•There is risk of fire or electric
shock.
Always install a dedicated cir-
cuit and breaker.
•Improper wiring or installation may
cause fire or electric shock
Use the correctly rated break-
er or fuse.
•There is risk of fire or electric
shock.
Do not modify or extend the
power cable.
•There is risk of fire or electric
shock.

Safety Precautions
6Universal System Air Conditioner
■Operational
Do not install, remove, or re-
install the unit by yourself
(customer).
•There is risk of fire, electric shock,
explosion, or injury.
Be cautious when unpacking
and installing the product.
•Sharp edges could cause injury.
Be especially careful of the case
edges and the fins on the con-
denser and evaporator.
For installation, always con-
tact the dealer or an
Authorized Service Center.
•There is risk of fire, electric shock,
explosion, or injury.
Do not install the product on a
defective installation stand.
•It may cause injury, accident, or
damage to the product.
Be sure the installation area
does not deteriorate with age.
•If the base collapses, the air condi-
tioner could fall with it, causing
property damage, product failure,
and personal injury.
Do not let the air conditioner
run for a long time when the
humidity is very high and a
door or a window is left open.
•Moisture may condense and wet or
damage furniture.
Do not touch(operate) the
product with wet hands.
•There is risk of fire or electrical
shock.
Do not place a heater or other
appliances near the power
cable.
•There is risk of fire or electric
shock.
Do not let electric parts of the
product get wet.
•There is risk of fire, failure of the
product, or electric shock.

Safety Precautions
Service Manual 7
■Installation
Do not open the inlet grill of the product during
operation. (Do not touch the electrostatic filter,
if the unit is so equipped.)
•There is risk of physical injury, electric shock, or prod-
uct failure.
Be cautious that water could not enter the
product.
•There is risk of fire, electric shock, or product damage.
Always check for gas (refrigerant) leakage after
installation or repair of product.
•Low refrigerant levels may cause failure of product.
Install the drain hose to ensure that water is
drained away properly.
•A bad connection may cause water leakage.
Do not store or use flammable gas or com-
bustibles near the product.
•There is risk of fire or failure of product.
If strange sounds, or small or smoke comes
from product. Turn the breaker off or discon-
nect the power supply cable.
•There is risk of electric shock or fire.
Gasolin

Safety Precautions
8Universal System Air Conditioner
Keep level even when installing the product.
•To avoid vibration or water leakage.
Use two or more people to lift and transport
the product.
•Avoid personal injury.
Use a soft cloth to clean. Do not use harsh
detergents, solvents, etc.
•There is risk of fire, electric shock, or damage to the
plastic parts of the product.
Do not touch the metal parts of the product
when removing the air filter. They are very
sharp!
•There is risk of personal injury.
Do not step on or put anyting on the product.
(outdoor units)
•There is risk of personal injury and failure of product.
Do not insert hands or other objects through
the air inlet or outlet while the product is oper-
ated.
•There are sharp and moving parts that could cause
personal injury.
90˚
Wax
Thinner
■Operational

Features & Benefits
Service Manual 9
Environment Friendly Refrigerant :
- LG Ceiling Cassette Air Conditioners uses environ-
ment friendly refrigerant, which don't do any harm to
the environment.
Jet Cool :
-In this mode, quick and fast cooling is done. Cold and
high velocity air is supplied to the room till the indoor
temperature reaches 18°C. The unit will continue to
run in jet cool mode till the Indoor temperature reach-
es 18°C.
Energy Saving Gold Fin :
- Heat Exchanger fins are coated with anticorrosive &
hydrophilic layers. It prevents the corrosion of heat
exchanger. Fins remain as new even after long time
of operation and maintains efficiency of heat
exchanger. It also saves power & maintenance Cost.
Plasma Air Purifier :
- It removes not only microscopic contaminants &
dust, but also house mites, pollen, and pet fur to help
preventing allergic diseases like asthma.It provides
odor free, dust free and allergy free air.
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 func-
tions.
Central Control :
- 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 respec-
tive LCD wired remote controller of each unit.
Uncoated Aluminum Gold fin
10mm10mm 10mm10mm
Salt SprayTest Result : After 360 hours
[ Test Standard: ASTM B-117, KS D 9502 ]
Pitting Corrosion
10mm 10mm
IonizerPre-filter
Dust particles
dusts
Odour
Dust
electrode
discharge
Odor molecule
+6.5KV
discharge
aluminum coated
electrode(-)
(3.25KV discharge)
Generating
plasma
++
++
+
Dusts Collection
Polluted
Air Purified
fresh Air
10mm 10mm
1216........
........
Main
PCB
Controller
# 1 Controller # 2 Controller # 8
M
1
Sub
1
M
2
Sub
2
M
16
Sub
16
M
17
Sub
17
M
18
Sub
18
M
128
Sub
128
Features & Benefits

Features & Benefits
10 Universal System Air Conditioner
71
Vane 2
Swirl Swing(New)4- Open(Conventional)
Swirl Swing(New)4- Open(Conventional)
2.4% 4.8%100% Improved
Comparison of Air Flow Types
Comparison of Floor
Temp. Distribution(20°C)
Vane 1 Close OpenOpen
Open
Open
Open
Close CloseOpen
Vane 3 Close Open Close CloseOpen
OpenOpen Close CloseOpen
Vane 2
OpenOpen
Time
Close CloseOpen
Vane 4
Vane 1
Vane 3
Vane 2
Time
Vane 4
Vane 3
Vane 4
Vane 1
Swirl Swing(For Ceiling Cassette):
- 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.
Space Control (For Ceiling Cassette):
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.
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 tem-
perature. Two thermistor control provides option to control temperature by referring any of the two tempera-
tures. 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.
Auto Changeover :
- While starting the unit it first senses the indoor temperature & starts the unit either in the cooling or in heating
mode, depending upon the indoor temperature. Range of operation is Setting Temp.± 2°C.
+2˚C
+1˚C
+0.5˚C
Setting Temp.
COMP
Cooling CoolingHeating
on
Set
Mode Set Mode Set Mode Set Mode
Low/
Stop Low/ Stop
Set
Mode
off
Low Low LowStop
off off off off offon on on on
CYCLE
Indoor
FAN
-0.5˚C
-1˚C
-2˚C
InsideTemp

Features & Benefits
Service Manual 11
Defrost / Deicing :
- In the heating mode, it prevents the ice formation on the outdoor unit. The heating cycle is reversed to the
cooling cycle to defrost the evaporator pipe of the outdoor unit. While defrost cycle, the compressor is on and
indoor fan, outdoor fan and 4-way valve are off.
Low Ambient Control:
- If the outdoor temperature drops below certain tem-
perature, liquid back to the compressor is prevented
by reducing outdoor fan speed. It can prevent frost-
ing of evaporator and keep cooling operation on.
High Ceiling Operation(For Ceiling Cassette)
- According to the height of ceiling installation, it pro-
vides 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.
ex:
Water Drain Pump :
- In some of the places natural drainage is not possi-
ble. For such places drain pump is very useful. It
removes condensed water from the unit.
Time Delay Safety Function :
- It delays restarting of the compressor by three min-
utes thereby preventing damage to the compressor.
Zero Standby Power:
- Due to SMPS (Switching Modulation Power Supply)
technology, there is almost zero power consumption
in the standby mode.
Child Lock Function:
-It prevents the children or others from tampering 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 displaye CL on the LCD for
3 seconds and all the keys will be ineffective.
30m
30m
5~6W
Others LG
0.5W
CHILD LOCK
-Display
Selection Height RPM
Lower 2.4m 700/600/500
Standard 2.7m 750/650/550
Higher 3.0m 800/700/600

Features & Benefits
12 Universal System Air Conditioner
Zone Control:
- 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 then the set temperature damper is open
to provide cooling to the zone & vice versa in the
heating mode.
Tele Control :
- It provides you ease of control. Air conditioner can
be switched on/off by the telephone. It saves time
& energy.
E.S.P. Control:
- Generally, when External Static Pressure increas-
es air volume decreases. But by controlling the
phase of motor while installing the product, E.S.P.
is controlled from 8~10mm Aq, linearly. E.S.P. con-
trol provides required constant air volume irrespec-
tive of ESP change. Desired ESP can also be set
through LCD wired remote. Setting of the desired
ESP gives required combination of ESP and air-
flow.
Electric Heater:
- Electric Heater can be used to provide heat in
addition to cycle heat. It also provide & quick heat-
ing. It can also work as a stand alone heater with
only fan operation.
Self Diagnosis Function:
- This function provides diagnosis of the unit. An
error code will be displayed on the LCD wired
remote controller & diagnosis can be done as per
the code indication. The same is also printed on
key cover of the LCD wired remote controller.
ON
ONON OFF
ON OFF OFFOFF
In Advance by Telephone
Before Coming Home... In case of Going out
Without Turning off the
Air Conditioner...
Zone A Zone B
Zone DZone C
Air volume
2 4 6 8 10 12
E.S.P Control
Air volume
at 2 mmAq.
L
LMH
M
H
Air volume
at 10 mmAq.

List of Functions
Service Manual 13
1 Ceiling Cassette
Model Ceiling Cassette
Features
Air Discharge Outlet 4 4 4 4 4 4
Airflow Direction control (left & right) - - - - - -
Airflow Direction control (up & down) Auto Auto Auto Auto Auto Auto
Airflow Steps(Fan / Cool /Heat) 3/4/- 3/4/- 3/4/- 3/4/3 3/4/3 3/4/3
Auto Changeover - - - o o o
Auto Operation o o o o o o
Auto Restart Operation o o o o o o
Auto Swing o o o o o o
Central Control Accessory Accessory Accessory Accessory Accessory Accessory
CHAOS Wind (Auto wind) - - - - - -
Child Lock Function o o o o o o
Cooling & Fan Operation o o o o o o
Coolling, heating & Fan Operation - - - o o o
Defrost / Deicing - - - o o o
Deodorizing Filter - - - - - -
Drain Pump o o o o o o
E.S.P. Control - - - - - -
Electric Heater - - - - - -
Energy Saving Gold Fin Optional Optional Optional Optional Optional Optional
Environment Friendly Refrigerant o o o o o o
Fire Alarm Function - - - - - -
Forced Operation o o o o o o
Group Control o o o o o o
High Ceiling Operation o o o o o o
Hot Start - - - o o o
Jet Cool o o o o o o
Low Ambient Control Optional Optional Optional Optional Optional Optional
Plasma Air Purifier Optional Optional Optional Optional Optional Optional
Prefilter(Washable / Anti-fungus) o o o o o o
Restart Delay (3-minutes) o o o o o o
Self Diagnosis o o o o o o
Sleep Mode o o o o o o
Soft Dry Operation o o o o o o
Swirl Swing o o o o o o
Tele Control - - - - - -
Temperature Control o o o o o o
Test Function o o o o o o
Time Delay Safety function o o o o o o
Timer (weekly) o o o o o o
Two Thermistor Control o o o o o o
Space Control o o o o o o
Wired LCD Remote Controller o o o o o o
Wireless Remote Controller o o o o o o
Zero Standby Power o o o o o o
Zone Control - - - - - -
ATNC-EL ATNC-FL ATNC-DL ATNH-EL ATNH-FL ATNH-DL
Notes :
O : Basic
Optional : Factory-Installed
Accessory : Field-Installed
- : Not available on this system
List of Functions

List of Functions
14 Universal System Air Conditioner
2 Ceiling Concealed Duct
Model Ceiling Concealed Duct
Features
Discharge Outlet
Airflow Direction control (left & right)
Airflow Direction control (up & down)
Airflow Steps(Fan / Cool /Heat)
Auto Changeover
Auto Operation
Auto Restart Operation
Auto Swing
Central Control
CHAOS Wind (Auto wind)
Child Lock Function
Cooling & Fan Operation
Coolling, heating & Fan Operation
Defrost / Deicing
Deodorizing Filter
Drain Pump
E.S.P. Control
Electric Heater
Energy Saving Gold Fin
Environment Friendly Refrigerant
Fire Alarm Function
Forced Operation
Group Control
High Ceiling Operation
Hot Start
Jet Cool
Low Ambient Control
Plasma Air Purifier
Prefilter(Washable / Anti-fungus)
Restart Delay (3-minutes)
Self Diagnosis
Sleep Mode
Soft Dry Operation
Swirl Swing
Tele Control
Temperature Control
Test Function
Time Delay Safety function
Timer (weekly)
Two Thermistor Control
Space Control
Wired LCD Remote Controller
Wireless Remote Controller
Zero Standby Power
Zone Control
ABNC-HL ABNC-GL ABNC-EL ABNH-HL ABNH-GL ABNH-EL
Notes :
O : Basic
Optional : Factory-Installed
Accessory : Field-Installed
- : Not available on this system
------
------
------
3/3/- 3/3/- 3/3/- 3/3/3 3/3/3 3/3/3
---ooo
oooooo
oooooo
------
Accessory Accessory Accessory Accessory Accessory Accessory
------
oooooo
oooooo
---ooo
---ooo
------
Accessory Accessory Accessory Accessory Accessory Accessory
oo-oo-
- - - Accessory Accessory Accessory
Optional Optional Optional Optional Optional Optional
oooooo
------
oooooo
oooooo
------
---ooo
------
Optional Optional Optional Optional Optional Optional
Accessory Accessory Accessory Accessory Accessory Accessory
oooooo
oooooo
oooooo
oooooo
oooooo
------
Accessory Accessory Accessory Accessory Accessory Accessory
oooooo
oooooo
oooooo
oooooo
oooooo
-----
oooooo
Accessory Accessory Accessory Accessory Accessory Accessory
oooooo
Accessory Accessory Accessory Accessory Accessory Accessory

List of Functions
Service Manual 15
3 Ceiling & Floor
Model Ceiling Concealed Duct
Features
Discharge Outlet
Airflow Direction control (left & right)
Airflow Direction control (up & down)
Airflow Steps(Fan / Cool /Heat)
Auto Changeover
Auto Operation
Auto Restart Operation
Auto Swing
Central Control
CHAOS Wind (Auto wind)
Child Lock Function
Cooling & Fan Operation
Coolling, heating & Fan Operation
Defrost / Deicing
Deodorizing Filter
Drain Pump
E.S.P. Control
Electric Heater
Energy Saving Gold Fin
Environment Friendly Refrigerant
Fire Alarm Function
Forced Operation
Group Control
High Ceiling Operation
Hot Start
Jet Cool
Low Ambient Control
Plasma Air Purifier
Prefilter(Washable / Anti-fungus)
Restart Delay (3-minutes)
Self Diagnosis
Sleep Mode
Soft Dry Operation
Swirl Swing
Tele Control
Temperature Control
Test Function
Time Delay Safety function
Timer (weekly)
Two Thermistor Control
Space Control
Wired LCD Remote Controller
Wireless Remote Controller
Zero Standby Power
Zone Control
AVNC-BL AVNH-BL
Notes :
O : Basic
Optional : Factory-Installed
Accessory : Field-Installed
- : Not available on this system
12
Manual Manual
Auto Auto
3/3/- 3/3/3
-o
oo
oo
oo
Accessory Accessory
oo
--
oo
-o
-o
--
--
--
--
Optional Optional
oo
--
oo
--
--
-o
--
Optional Optional
--
oo
oo
oo
oo
oo
--
--
oo
oo
oo
--
--
--
--
o (LCD) o (LCD)
--
--

Function of Remote Control
16 Universal System Air Conditioner
ON OFF
SET CANCEL
Signal Fransmitter
Wall Mounted type
(Chaos)
Cassette Type
(Auto)
Heat Pump
Model
Cooling Model
56
1
3
10
11
12
13
4
7
8
9
2
1START/STOP BUTTON
Operation starts when this button is pressed and stops
when the button is pressed again.
2OPERATION MODE SELECTION BUTTON
Used to select the operation mode.
3 ROOM TEMPERATURE SETTING BUTTONS
Used to select the room temperature.
4INDOOR FAN SPEED SELECTOR
Used to select fan speed in four steps low, medium, high,
or CHAOS.
5JET COOL
Used to start or stop the speed cooling. (Speed cooling
operates super high fan speed in cooling mode.)
6CHAOS/AUTO SWING BUTTON
Used to stop or start louver movement and set the desired
up/down airflow direction .
7ON/OFF TIMER BUTTONS
Used to set the time of starting and stopping opera-
tion.
8TIME SETTING BUTTONS
Used to adjust the time.
9TIMER SET/CANCEL BUTTONS
Used to set the timer when the desired time is
obtained and to cancel the Timer operation.
10 SLEEP MODE AUTO BUTTON
Used to set Sleep Mode Auto operation.
11 AIR CIRCULATION BUTTON
Used to circulate the room air without cooling or
heating (turns indoor fan on/off).
12 ROOM TEMPERATURE CHECKING BUTTON
Used to check the room temperature.
13 RESET BUTTON
Used prior to resetting time or after replacing batter-
ies.
1. Wireless LCD Remote Control(Ceiling & Floor models)
Function of Remote Control

Function of Remote Control
Service Manual 17
2. Wireless LCD Remote Control(Ceiling Cassette models)
1 OPERATION DISPLAY
Displays the operation conditions.
2 ON/OFF BUTTON
Operation starts when this button is pressed and stops when
the button is pressed again.
3 JET COOL BUTTON
Used to select jet cool mode.
4 ON/OFF TIMER BUTTONS
Used to set the time of starting and stopping operation.
5 TIME SETTING BUTTONS
Used to adjust the time.
6 TIMER SET/CANCEL BUTTONS
Used to set the timer when the desired time is obtained and
to cancel the Timer operation.
7 AIR SWING BUTTON
Used to swing up and down.
8 SLEEP MODE BUTTON
Used to set Sleep Mode Auto operation.
9 AIR CIRCULATION BUTTON
Used to circulate the room air without cooling or heating
(turns indoor fan on/off).
10 ROOM TEMPERATURE CHECKING BUTTON
Used to check the room temperature.
11 RESET BUTTON
Used prior to resetting time or after replacing batteries.
12 INDOOR FAN SPEED SELECTOR
Used to select fan speed in four steps-low, medium, high,
or CHAOS.
13 ROOM TEMPERATURE SETTING BUTTONS
Used to select the room temperature.
14 ORERATION MODE SELECTION BUTTON
Used to select the operation mode.
15 PLASMA AIR CLEAN BUTTON(OPTIONAL)
ON OFF
SET CANCEL
PLASMA
Signal transmitter
(Transmits the signals to the signal receptor)
1
2
7
8
9
10
15
11
4
5
6
14
3
12
13
Heat Pump
Model
Cooling Model
Flip-up door
(opened)

18 Universal System Air Conditioner
Function of Remote Control
4. Wireless LCD Remote Control(Ceiling Concealed Duct models)
A/CL
1
4
3
5
6
11
10
9
2
7
8
Remote Controller
Signal transmitter
Transmits the signals to the signal receptor.
1FAN Operation Button
Used to circulate room air without cooling or heating.
2Cooling Operation Button
3Soft Dry Operation Button
Used to dehumidify without overcooling.
4Heating Operation Button
(Heat pump model only)
5Timer 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.
6Fan Speed Button
Used to set the desired fan speed.
7On/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: 48/60k Model only)
Used to set the Electric Heater.

Service Manual 19
Function of Remote Control
Timer Cancel
Program Week
Hour Min
Holiday
Set/Clr
RESET
Plasma
ZONE
1234
Operation unit
Humidify
JET
AUTO
AUTO SWING OPERATION FAN SPEED
Program set
SUB FUNCTION SET TEMP
Room Temp
HI
MED
LO
Heater
Defrost
Filter
Preheat
Out door
Time
Timer
On
Set no. Time
Off 01 03 05 07 09 11 13 15 17 19 21 23
3
10
12
14
15
11
13
18
16
2
1Heat Pump Model
Cooling Model
5
4
6
8
9
7
17
1 Operation display
Displays the operation conditions.
2 On/Off Button
Operation starts when this button is pressed, and
stops when the button is pressed again.
3 Set Temperature Button
Used to set the temperature when the desired tem-
perature is obtained.
4 FAN Operation Button
Used to circulate room air without cooling or heat-
ing.
5 Fan Speed & Jet Cool Button
Used to set the desired fan speed and 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.
9 Plasma Air Clean Button (optional)
10 Timer Cancel Button
Used to cancel the timer.
11 Timer Set Button
Used to set the timer when the desired time is
obtained.
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
Used to select swirl cool mode.
18 Reset Button
Used to set the current time and clear the setting
time.
3. Wireless LCD Remote Control(Ceiling Cassette models)

20 Universal System Air Conditioner
Function of Remote Control
5. Wired LCD Remote Control(Ceiling Concealed Duct models)
RESET
Timer Cancel
Program Week Holiday
SET/CLR
MinHour
JET
AUTO
Humidify
ZONE
1234
AUTO SWING OPERATION FAN SPEED
Program set
SUB FUNCTION SET TEMP
Room Temp
HI
MED
LO
Heater
Defrost
Filter
Preheat
Out door
Timer
On
Set no. Time
Off 01 03 05 07 09 11 13 15 17 19 21 23
Time
Operation unit
3
8
5
9
10
11
12
13
14
2
1
6
4
7
16
15
Signal receptor
1 Operation display
Displays the operation conditions.
2 On/Off Button
Operation starts when this button is pressed, and
stops when the button is pressed again.
3 Set Temperature Button
Used to set the temperature when the desired tem-
perature is obtained.
4 FAN Operation Button
Used to circulate room air without cooling or heat-
ing.
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)
8 Timer Cancel Button
Used to cancel the timer.
9 Timer Set Button
Used to set the timer when the desired time is
obtained.
10 Week Button
Used to set the day of the week.
11 Program Button
Used to set the weekly timer.
12 Holiday Button
Used to set a holiday of the week.
13 Time Setting 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 Reset Button
Used to set the current time and clear the setting
time.