OWNER’S MANUAL
AIR CONDITIONER
Please read this manual carefully before operating
your set and retain it for future reference.
P/NO : MFL42619401
www.lg.com
TYPE : CEILING CONCEALED DUCT
The equipment complies with requirements of the Technical
Regulation, in terms of restrictions for the use of certain dangerous
substances in electrical and electronic equipment.
ENGLISH ITALIANO ESPAÑOL
FRANÇAIS
DEUTSCH
2 Ceiling Concealed Duct Type Air Conditioner
Ceiling Concealed Duct Type Air Conditioner Owner’s Manual
TABLE OF CONTENTS
FOR YOUR RECORDS
Write the model and serial numbers here:
Model #
Serial #
You can find them on a label on the side of each unit.
Dealer's Name
Date Purchased
■
Staple your receipt to this page in the event you need it
to prove date of purchase or for warranty issues.
READ THIS MANUAL
Inside you will find many helpful hints on how to use and
maintain your air conditioner properly. Just a little
preventive care on your part can save you a great deal
of time and money over the life of your air conditioner.
You'll find many answers to common problems in the
chart of troubleshooting tips. If you review our chart of
Troubleshooting Tips first, you may not need to call for
service at all.
PRECAUTION
• Contact the authorized service technician for repair or
maintenance of this unit.
• Contact the installer for installation of this unit.
• The air conditioner is not intended for use by young
children or invalids without supervision.
• Young children should be supervised to ensure that
they do not play with the air conditioner.
• When the power cord is to be replaced, replacement
work shall be performed by authorized personnel only
using only genuine replacement parts.
• Installation work must be performed in accordance
with the National Electric Code by qualified and
authorized personnel only.
A. Safety Precautions.........................3
B. Product Introduction......................6
1. Name and function of parts ..........6
2. What to do before operation.........6
3. Wired Remote Controller..............6
C. Operating Instructions...................8
1. Set the Current Time and day
of the Week ..................................8
2. Weekly Programming ...................9
3. Holiday Setting ...........................10
4. Timer Setting ..............................10
5. Operation Mode..........................11
6. Cooling/Heating Operation Mode11
7. For Heat Pump Type ..................12
8. Soft Dry Operation Mode............12
9. Auto Operation Mode
(Cooling Type) .........................12
10. Auto Operation Mode
(Heat Pump Type) ....................13
11. Fan Operation Mode ................13
12. Fan Auto...................................14
13. Auto Restarting Function..........14
14. Child Lock Function..................14
D. Maintenance and Service ............15
1. Indoor Unit..................................15
2. Call the service immediately in
the following situations ...............15
3. Operation Tips............................16
4. Troubleshooting Tips!
Save time and money!................17
5. Call the service immediately in the
following situations .....................17
Owner's Manual 3
ENGLISH
Safety Precautions
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.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage.
WARNING
Always ground the product.
• There is a risk of electric shock.
Do not use a defective or underrated
circuit breaker. Use the correctly rated
breaker and fuse.
• There is risk of fire or electric shock .
Do not use a multi consent. Always use
this appliance on a dedicated cicuit and
breaker.
• Otherwise it can cause electric shock or fire.
For electrical work, contact the dealer, seller,
a qualified electrician, or an Authorized
Service Center. Do not disassemble or repair
the product by yourself.
• There is risk of fire or electric shock.
Always ground the product as per the
wiring diagram. Do not connect the
ground wire to gas or water pipes
lightening rod or telephone ground wire.
• 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 due to
dust , water etc.
Use the correctly rated breaker or fuse.
• There is risk of fire or electric shock.
Do not modify or extend the power cable.
If the power cable or cord has scrathes or
skin peeled off or deteriorated then it
must be replaced.
• There is risk of fire or electric shock.
For installation, removal or reinstall ,
always contact 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. Be sure that the
installation area does not deteriorate with
age.
• It may cause product to fall.
Never install the outdoor unit on a
moving base or a place from where it
can fall down.
• The falling outdoor unit can cause damage or
injury or even death of a person.
When the product is soaked (flooded or
submerged) in water , contact an
Authorized Service Center for repair
before using it again.
• There is risk of fire or eletric shock.
Be sure to check the refrigerant to the
used. Please read the label on the product.
• Incorrect refrigerant used can prevent the
normal operation of the unit.
Don't use a power cord, a plug or a loose
socket which is damaged.
• Otherwise it may cause a fire or electrical
shock.
Do not touch , operate, or repair the
product with wet hands. Hold the plug by
hand when taking out
• There is risk of electric shock or fire.
Do not place a heater or other heating
appliances near the power cable.
• There is risk of fire and electric shock.
Do not allow water to run into electric
parts. Install the unit away from water
sources.
• There is risk of fire, failure of the product, or
electric shock.
Do not store or use or even allow
flammable gas or combustibles near the
product.
• There is risk of fire.
WARNING
CAUTION
4 Ceiling Concealed Duct Type Air Conditioner
Safety Precautions
CAUTION
Two or more people must lift and
transport the product.
• Avoid personal injury.
Do not install the product where it will be
exposed to sea wind (salt spray) directly.
• It may cause corrosion on the product.
Install the drain hose to ensure that the
condensed water is drained away properly.
• A bad connection may cause water leakage.
Keep level even when installing the
product.
• To avoid vibration or noise.
Do not install the product where the noise
or hot air from the outdoor unit could
damage or disturb the neighborhoods.
• It may cause a problem for your neighbors
and hence dispute.
Always check for gas (refrigerant)
leakage after installation or repair of
product.
• Low refrigerant levels may cause failure of
product.
Indoor/outdoor wiring connections must
be secured tightly and the cable should
be routed properly so that there is no
force pulling the cable from the
connection terminals.
• Improper or loose connections can cause
heat generation or fire.
Safely dispose off the packing materials.
Like screws, nails, batteries, broken
things etc after installation or svc and
then tear away and thraw away the plastic
packaging bags.
• Children may play with them and cause
injury.
Make sure to check that the power cable
plug is not dirty, loose or broken and
then only insert the plug completely.
• Dirty, loose or broken power plug can
cause electric shock or fire.
Do not use the product in a tightly closed
space for a long time. Perform ventilation
regularly.
• Oxygen deficiency could occur and hence
harm your health.
Do not open the front grille 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 product failure.
If strange sounds, smell or smoke comes
from product.Immediately turn the breaker
off or disconnect the power supply cable.
• There is risk of electric shock or fire.
Ventilate the product room from time to
time when operating it together with a
stove, or heating element etc.
• Oxygen deficiency can occur and hence harm
your health.
Turn the main power off and unplug the
unit when cleaning or repairing the
product.
• There is risk of electric shock.
When the product is not to be used for a
long time, disconnect the power supply
plug or turn off the breaker.
• There is risk of product damage or failure, or
unintended operation.
Take care to ensure that nobody
especially kids could step on or fall onto
the outdoor unit.
• This could result in personal injury and
product damage.
Take care to ensure that power cable
could not be pulled out or damaged
during operation.
• There is risk of fire or electric shock.
Do not place ANYTHING on the power
cable.
• There is risk of fire or electric shock.
Do not plug or unplug the power supply plug to turn the unit
ON/OFF .
• There is risk of fire or electric shock.
When flammable gas leaks, turn off the gas and open a window
for ventilation before turn the product on.
• Do not use the telephone or turn switches on or off. There is risk of
explosion or fire.
In outdoor unit the step-up capacitor
supplies high voltage electricity to the
electrical components. Be sure to
discharge the capacitor completely
before conducting the repair work.
• An charged capacitor can cause electrical
shock.
When installing the unit, use the
installation kit provided with the product.
• Otherwise the unit may fall and cause severe
injury.
Be sure to use only those parts which
are listed in the svc parts list. Never
attempt to modify the equipment.
• The use of inappropriate parts can cause an
electrical shock, excessive heat generation or
fire.
Owner's Manual 5
ENGLISH
Safety Precautions
Do not use the product for special purposes,
such as preserving foods, works of art, etc. It
is a consumer air conditioner, not a precision
refrigeration system.
• There is risk of damage or loss of property.
Do not block the inlet or outlet of air flow.
• It may cause product failure.
Use a soft cloth to clean. Do not use
harsh detergents, solvents or splashing
water 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.
• 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.
Always insert the filter securely after
cleaning. Clean the filter every two weeks
or more often if necessary.
• A dirty filter reduces the efficiency.
Do not insert hands or other objects
through the air inlet or outlet while the
product is operating.
• There are sharp and moving parts that could
cause personal injury.
Be cautious when unpacking and
installing the product.
• Sharp edges could cause injury.
If the refrigerant gas leaks during the
repair, do not touch the leakaing
refrigerant gas.
• The refrigernat gas can cause frostbite (cold
burn)
Do not tilt the unit when removing or
uninstalling it.
• The condensed water inside can spill .
Do not mix air or gas other than the
specified refrigerant used in the system .
• If air enters the refrigerant system, an
excessively high pressure results, causing
equipment damage or injury.
If the refrigerant gas leaks during the
installation, ventilate the area immediately.
• Otherwise it can be harmfull for your health.
Dismantling the unit, treatment of the
refrigerant oil and eventual parts should
be done in accordance with local and
national standards.
Replace the all batteries in the remote
control with new ones of the same type.
Do not mix old and new batteries or
different types of batteries.
• There is risk of fire or product failure.
Do not recharge or disassemble the
batteries. Do not dispose off batteries in
a fire.
• They may burn or explode.
If the liquid from the batteries gets onto
your skin or clothes, wash it well with
clean water. Do not use the remote if the
batteries have leaked.
• The chemicals in batteries could cause burns
or other health hazards.
If you eat the liquid from the batteries,
brush your teeth and see doctor. Do not
use the remote if the batteries have
leaked.
• The chemicals in batteries could cause burns
or other health hazard.
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 expose your skin or kids or
plants to the cool or hot air draft.
• This could harm to your health.
Do not drink the water drained from the
product.
• It is not sanitary and could cause serious
health issues.
Use a firm stool or ladder when cleaning,
maintaining or repairing the product at
an height.
• Be careful and avoid personal injury.
6 Ceiling Concealed Duct Type Air Conditioner
Product Introduction
Product Introduction
1: Indoor unit
2: Outdoor unit
3: Remote controller
4: Inlet air
5: Discharge air
6: Refrigerant piping, connection
electric wire
7: Drain pipe
8: Ground wire
wire to ground outdoor unit to
prevent electrical shocks.
If your installation has a customized
control system, ask your LG dealer for
the operation that corresponds to your
system.
A: Pair system or simultaneous
operation system
B: Multi system
1: Unit with remote controller
2: Unit without remote controller (when
used as simultaneous operation)
6
7
2
8
4
5
Remote
Controller
3
Air intake
vents
1
Air outlet
vents
A
B
12
1
1
Name and function of parts
What to do before operation
ENGLISH
Owner's Manual 7
Product Introduction
Wired Remote Controller
6
Timer
Program
Hour
Cancel 2ndF
Week Holiday
Set/Clr
Min
RESET
PLASMA
AUTO
ZONE
1234
Operation unit
Humidify
JET
SLo
AUTO
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
2ndF
No Func
Signal receptor
3
18
19
8
9
10
11
12
13
14
2
1
5
4
15
17
7
16
Signal
Receiver
RESET
Plasma
Timer Cancel
Program Week Holiday
SET/CLR
MinHour
Humidify
AUTO
AUTO SWING
JET
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
9
10
11
12
13
14
2
1
5
4
6
15
16
7
ZONE
1234
Type 1 Type 2
1. Operation display
2. On/Off Button
3. Set Temperature Button
4. FAN Operation Button
5. Fan Speed Button
6. Operation Mode Selection Button
7. Room Temperature Checking Button
8. Timer Cancel Button
9. Timer Set Button
10. Week Button
11. Program Button
12. Holiday Button
13. Time Set Button
14. Set and Clear Button
15. Reset Button
16. Plasma Button
17. Fan Auto Button
18. Operation Lamp
19. 2nd F Button
❈
Display temperature can be different form actual room temperature if the remote controller is installed at the
place where sun-rays are falling directly or the place nearby heat source.
❈
The actual product can be different from above contents depending upon model type.
Operation Mode
Cooling Operation
Soft Dry Operation
Heating Operation
Auto Operation
•
Cooling Model( ), Heat Pump Model( )
NOTE
8 Ceiling Concealed Duct Type Air Conditioner
Operating Instructions
Operating Instructions
HI
ZONE
Operation unit Program set
Room Temp
MED
LO
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Timer
On
Set no. Time
Off
01 03 05 07 09 11 13 15 17 19 21 23
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
Time
AUTO SWING
HI
ZONE
Operation unit Program set
Room Temp
MED
LO
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Timer
On
Set no. Time
Off
01 03 05 07 09 11 13 15 17 19 21 23
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
Time
AUTO SWING
HI
ZONE
Operation unit Program set
Room Temp
MED
LO
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Timer
On
Set no. Time
Off
01 03 05 07 09 11 13 15 17 19 21 23
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
Time
AUTO SWING
HI
ZONE
Operation unit Program set
Room Temp
MED
LO
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Time
Timer
On
Set no. Time
Off
01 03 05 07 09 11 13 15 17 19 21 23
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
AUTO SWING
Hour
Min
Week
RESET
Set the Current Time and day of the Week
Unless you press any button about 5 (sometimes 10) seconds while setting function, the setting mode returns to
initial mode.
1
Press the ' ' button.
Each time the button is pressed, the number is changed from 00 to 23.
You can set the number of the current hour.
2
Press the ' ' button.
Each time the button is pressed, the number is increased from 00 to 59.
You can set the number of the current minute.
3
Press ' ' button.
Each time the button is pressed, a day of the week is shifted from sunday to saturday.
You can set the day of the week.
4
Press the ' ' button.
If you want to reset the current time and a day of the week, click the Reset button.
Hour
Min
Week
RESET
ENGLISH
Owner's Manual 9
Operating Instructions
Program
SET/CLR
MinHour
Time
HI
ZONE
Operation unit
Room Temp
MED
LO
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Timer
On
Set no.
Off
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
Program set
01 03 05 07 09 11 13 15 17 19 21 23
Time
AUTO SW ING
Week
Time
HI
ZONE
Operation unit
Room Temp
MED
LO
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Timer
On
Set no.
Off
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
01 03 05 07 09 11 13 15 17 19 21 23
Time
AUTO SW ING
Program set
Program set
Time
HI
ZONE
Operation unit
Room Temp
MED
LO
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Timer
On
Set no.
Off
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
01 03 05 07 09 11 13 15 17 19 21 23
Time
AUTO SWING
01 03 05 07 09 11 13 15 17 19 21 23
Time
Program set
Time
HI
ZONE
Operation unit
Room Temp
MED
LO
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Timer
On
Set no.
Off
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
AUTO SWING
Program
01 03 05 07 09 11 13 15 17 19 21 23
Time
Program set
Time
HI
ZONE
Operation unit
Room Temp
MED
LO
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Timer
On
Set no.
Off
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
AUTO SW ING
Weekly Programming
1
Press the Program button.
The remote controller display becomes as shown below. Then ' ', ' ' and '01' is blinked.
Program set
2
Press the ' ' button.
e.g. To select Thu, press the button 4 times
Week
3
Select the time you want.
If you press or button, then indication part blinks to select On/Off hours
If you press button at the selected hour, then indication part is stored
as unit's On time.
If you press it again, then that hour is skipped
For example: Over here, the unit is turned On at 6~8 & 13~22 hours
and remains Off during rest of time. (Black Bar indicates On hour and
no bar indicated Off hour interval)
Similarly you can do the settings for rest of days of the week.
5
The same setting continues following weeks unless you don’t do setting again.
If you want to keep the settings only for I week, follow the steps below
1) Press “CANCEL” & “SET/CLR” buttons simultaneously.
Then the display becomes as shown in figure
below.
4
Press the Program button again to finish Weekly
Programming.
2) Detach your fingers when the display becomes as shown in figure
above .
Now the weekly program is stored for one week only.
This function can not be applicable to some models.
Hour
Min
SET/CLR
NOTE
10 Ceiling Concealed Duct Type Air Conditioner
Operating Instructions
Time
HI
ZONE
Operation unit
Room Temp
MED
LO
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Timer
On
Set no.
Off
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
Program set
01 03 05 07 09 11 13 15 17 19 21 23
Time
AUTO SWING
Time
HI
ZONE
Operation unit
Room Temp
MED
LO
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Timer
On
Set no.
Off
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
01 03 05 07 09 11 13 15 17 19 21 23
Time
AUTO SWING
Program set
Program set
Time
HI
ZONE
Operation unit
Room Temp
MED
LO
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Timer
On
Set no.
Off
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
01 03 05 07 09 11 13 15 17 19 21 23
Time
AUTO SWING
Program set
Time
HI
ZONE
Operation unit
Room Temp
MED
LO
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
On
Set no.
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
01 03 05 07 09 11 13 15 17 19 21 23
Time
AUTO SWING
Timer
Off
Program
Week
Holiday
Timer
Timer
Holiday Setting
Timer Setting
If Tuesday is a holiday in this week, you may set a holiday.
1
Press the Program button.
2
Press the Week button.
Select Tuesday.
3
Press the Holiday button.
Then the remote controller will display ' '.
The outside rectangular means holiday.
You cannot set the weekly program for a holiday.
This function is used to set either ON or Off interval once in 24 hrs since the setting was done.
The unit will automatically operate as per the settings.
1
Press the Timer button.
2
Using Hour & Min buttons, change the timer setting
until the desired time is set.
e.g. The unit is turned off after 5 hrs
3
If you want to cancel the timer setting, press the Timer button again.
MinHour
4
Press the Program button again to finish holiday setting.
You can not set On Timer Setting and Off Timer Setting at the same time.
NOTE
NOTE
ENGLISH
Owner's Manual 11
Operating Instructions
COOLING TYPE
Cooling Operation Soft Dry Operation
AUTO SWING
ZONE
Operation unit Program set
Room Temp
MED
LO
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Time
Timer
On
Set no. Time
Off
01 03 05 07 09 11 13 15 17 19 21 23
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
HI
AUTO SWING
HI
ZONE
Operation unit Program set
Room Temp
MED
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Time
Timer
On
Set no. Time
Off
01 03 05 07 09 11 13 15 17 19 21 23
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
LO
Auto Operation
AUTO SWING
LO
ZONE
Operation unit Program set
Room Temp
MED
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Time
Timer
On
Set no. Time
Off
01 03 05 07 09 11 13 15 17 19 21 23
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
HI
Operation Display
AUTO SWING
ZONE
Operation unit Program set
Room Temp
MED
LO
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Time
Timer
On
Set no. Time
Off
01 03 05 07 09 11 13 15 17 19 21 23
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
HI
AUTO SWING
Room Temp
HI
ZONE
Operation unit Program set
MED
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Time
Timer
On
Set no. Time
Off
01 03 05 07 09 11 13 15 17 19 21 23
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
LO
AUTO SWING
HI
ZONE
Operation unit Program set
Room Temp
LO
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Time
Timer
On
Set no. Time
Off
01 03 05 07 09 11 13 15 17 19 21 23
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
MED
Operation Display
AUTO SWING
ZONE
Operation unit Program set
Room Temp
MED
LO
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Time
Timer
On
Set no. Time
Off
01 03 05 07 09 11 13 15 17 19 21 23
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
HI
AUTO SWING
HI
ZONE
Operation unit Program set
Room Temp
MED
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Time
Timer
On
Set no. Time
Off
01 03 05 07 09 11 13 15 17 19 21 23
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
LO
AUTO SWING
ZONE
Operation unit Program set
Room Temp
MED
LO
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Time
Timer
On
Set no. Time
Off
01 03 05 07 09 11 13 15 17 19 21 23
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
HI
AUTO SWING
ZONE
Operation unit Program set
Room Temp
MED
LO
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Time
Timer
On
Set no. Time
Off
01 03 05 07 09 11 13 15 17 19 21 23
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
HI
HEAT PUMP TYPE
Cooling Operation Soft Dry Operation Heating Operation Auto Operation
Operation Display
To raise the Temperature.
To lower the Temperature.
AUTO SWING
ZONE
Operation unit Program set
Room Temp
MED
LO
AUTO
JET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Time
Timer
On
Set no. Time
Off
01 03 05 07 09 11 13 15 17 19 21 23
1234
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
HI
Operation Mode
Cooling/Heating Operation Mode
2
Select the desired Operation.
Press the Operation Mode Selection Button.
Each time the button is pressed, the operation mode is shifted as shown in the arrow direction.
1
Press the On/Off Button.
4
Set the fan speed.
3
Set the desired
temperature.
Cooling Mode
Setting temperature range is 18~30 °C
Heating Mode
Setting temperature range is 16~30°C
• Each time the button is pressed, the fan speed mode is shifted.
12 Ceiling Concealed Duct Type Air Conditioner
Operating Instructions
ZONE
Operation unit Program set
Room Temp
MED
LO
AUTO
JET
Heater
Defrost
Filter
Humidify
Out door
Time
Timer
On
Set no. Time
Off
01 03 05 07 09 11 13 15 17 19 21 23
1234
AUTO SW ING OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
HI
Preheat
Preheat
ZONE
Operation unit Program set
Room Temp
MED
LO
AUTO
JET
Heater
Filter
Humidify
Out door
Time
Timer
On
Set no. Time
Off
01 03 05 07 09 11 13 15 17 19 21 23
1234
AUTO SW ING OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
HI
Defrost
HI
ZONE
Operation unit Program set
Room Temp
MEDLOJET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Time
Timer
On
Set no. Time
Off
01 03 05 07 09 11 13 15 17 19 21 23
1234
AUTO SWING OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
AUTO
To raise the Temperature.
To lower the Temperature.
Cold Cool Proper Warm Hot
Soft Dry Operation Mode
5
This air-conditioner is set to the hot start control in order not
to discharge the cold air during the heating operation. This
time, the remote controller indicates ‘Preheat’.
6
If the outdoor temperature is too low during the heating
operation, this air-conditioner is set to the defrosting
operation and the remote controller indicates ‘Defrost’.
For Heat Pump Type
7
Soft Dry Operation is used to remove the humidity softly without overcooling the room, specially when
the humidity is already low.
The indoor fan speed is automatically set to the low. But you can change it. Soft dry operation cancels
and becomes the cooling operation if you press the operation mode selection button.
Auto Operation Mode (Cooling Type)
8
The temperature and fan speed are automatically set by the electronic controls based on the actual
room temperature. If you want to change the set temperature, close the door on the remote control and
press the Room Temperature Setting buttons. The cooler or warmer you feel, the more times
(up to two times) you should press the button. The set temperature will then be changed.
The temperature can be set within a range of -2~2 by 1 level.
(This indication will be shifted to the initial
Auto Mode Display state after 5 seconds.)
During Auto Operation:
❏ You cannot switch the indoor fan speed. It has already been set by the Fuzzy rule.
❏ If the system is not operating as desired, manually switch to another mode. The system will not
automatically switch from the cooling mode to the heating mode, or from heating to cooling, it must be
done by manually resetting.
ENGLISH
Owner's Manual 13
Operating Instructions
HI
ZONE
Operation unit Program set
Room Temp
MEDLOJET
Heater
Defrost
Filter
Preheat
Humidify
Out door
Time
Timer
On
Set no. Time
Off
01 03 05 07 09 11 13 15 17 19 21 23
1234
AUTO SWING OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
AUTO
To raise the Temperature.
To lower the Temperature.
Hi LowMedium
1
Press the On/Off Button.
2
press FAN Operation Button.
3
Each time Fan Speed button is pressed, the fan speed mode is shifted as shown below.
Auto Operation Mode (Heat Pump Type)
Fan Operation Mode
9
The setting temperature
can be changed, when the
set temperature button is
pressed.
• The temperature can be set
within a range of 18°C~30°C
by 1°C.
Auto Change Over Operation(Pair system):
❏ You can switch the indoor fan speed.
❏
The system will automatically switch from the cooling mode to the heating mode, or from heating to cooling,
when you select Auto Opration mode.
Auto Operation(Multi system or Simultaneous system):
❏ You can switch the indoor fan speed.
❏
If the system is not operating as desired, manually switch to another mode. The system will not automatically
switch from the cooling mode to the heating mode, or from heating to cooling, then you must set the mode and
the desired temperature again.
This function is used to circulate room air without cooling or heating.
Operating Instructions
14 Ceiling Concealed Duct Type Air Conditioner
Fan Auto
Auto Restarting Function
Fan Auto function is used to control the airflow when outdoor unit is not working.
Fan Auto function is not applicable to some models.
AUTO
1
Press the Fan Auto button.
Every time you press the Fan Auto button, it toggles between on and off.
But for the models that do not support the Fan Auto function, the Fan Auto function
will not work even though the sign will be shown on the screen.
1
When the power has been shut off due to power faiure or other reasons, it is automatically operated as
previous operation condition with the power failre compensation function
2
In case of power failure condition, the remote contoller display is off but the setting arte retreved arter
the power recovery.
2
If Fan Auto function is On when outdoor unit is not working, Then the
indoor fan will not operate.
If Fan Auto function is Off when outdoor unit is not working,
Then the indoor fan operates at Low speed or at the adjusted speed.
Child Lock Function
Operation procedure
1. To set the Child-Lock Function
Press the Timer button and Minute Set button for three seconds. Then
the operation mode shift to child lock mode and it is displayed ‘CL’ in the
operation display.
When you press any button in this time, the remote controller doesn't
accept to any selected mode and the ‘CL’ is displayed in the remote
controller for about three seconds. But the Room Temperature function is
operated in spite of child lock mode.
2. To cancel the Child-Lock Function
Repress the Timer button and Minute Set button for three seconds. Then
the child-lock mode is cancelled and the preselected mode is displayed
in the remote controller.
The Child Lock Function disables all the functions of the remote controller.
AUTO SWING
ZONE
1234
Operation unit
Humidify
JET
AUTO
Program set
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
Timer Cancel
Program Week
Hour Min
Holiday
SET/CLR
RESET
OPERATION
FAN SPEED
SUB FUNCTION
SET TEMP
Plasma
NOTE
Air outlet vent
Air-Filter
B
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Owner's Manual 15
ENGLISH
Maintenance and Service
Maintenance and Service
Air outlet vent
Air filters
Air-Filter
Indoor Unit
Grille, Case and Remote Control
❐ Turn the system off before cleanining, To clean, wipe with a soft, dry cloth. Do not use bleach or abrasives.
Supply power must be disconnected before cleaning the indoor unit.
1
Remove the Air filters.
■
Take hold of the tab and pull slightly forward
to remove the filter.
CAUTION:
When the air filter is to
be removed, do not touch the metal
parts of the indoor unit.
It may cause an injury.
2
Clean dirt from the air filter using a vacuum
cleaner or washing with water.
■
If dirt is conspicuous, wash with a neutral
detergent in lukewarm water.
■
If hot water (50°C or more) is used, it may be
deformed.
3
After washing with water, dry well in the
shade.
■
Do not expose the air filter to direct
sunlight or heat from a fire when drying it.
4
Install the air filter.
Air Filters
The air filters behind the front grille should be checked
and cleaned once every 2 weeks or more often if
neccessary.
■ Never use any of the followings:
• Water hotter than 40°C.
Could cause deformation and/or discoloration.
• Volatile substances.
Could damage the
surfaces of the air
conditioner.
NOTE
16 Ceiling Concealed Duct Type Air Conditioner
Maintenance and Service
Operation Tips!
When the air conditioner is not going....
Do not overcool the room.
This is not good for the health and
wastes electricity.
Keep blinds or curtains
closed.
Do not let direct sunshine enter the
room when the air conditioner is in
cooling operation.
Make sure that the doors
and windows are shut tight.
Avoid opening doors and windows
as much as possible to keep the air
conditioned air in the room.
Clean the air filter regularly.
Blockages in the air filter reduce the airflow and lower
air conditioned and dehumidifying effects. Clean at least
once every two weeks.
Ventilate the room occasionally.
Since windows are kept closed, it is a good idea to open
them and ventilate the room from time to time.
When it is not going to be used for a long time.
1 Operate the air conditioner on Air circulation mode for 2 to 3 hours.
• This will dry out the internal parts.
2 Turn off the circuit breaker.
CAUTION: Turn off the circuit breaker when the air conditioner is not going
to be used for a long time.
Dirt may collect and may cause a fire.
3. Remove the batteries from the Remote Controller.
When the air conditioner is to be used again.
■ Check that the air inlet and outlet of the indoor/outdoor unit are not blocked.
Helpful information
The air filters and your electiric bill.
If the air filters become clogged with dust, the cooling capacity will drop, and 6% of the electricity used to
operate the air conditioner will be wasted.
Owner's Manual 17
ENGLISH
Maintenance and Service
Check the following points before requesting repairs or service.... If the malfunction persist, please contact your dealer.
Troubleshooting Tips! Save time and money!
The air conditioner does not
operate.
The room has a peculiar odor.
It seems that condensate is
leaking from the air Conditioner.
Air conditioner does not operate
for about 3 minutes when restart.
Does not cool or heat effectively.
The air conditioner operation is
noisy.
Crack sound is heard.
Remote control display is faint, or
no display at all.
• Have you made a mistake in timer operation?
• On first starting, the indoor unit operates in
fifteen seconds.
• Has the fuse blown or has the circuit breaker
been tripped?
•
Check that this is not a damp smell exuded by the
walls, carpet, furniture or cloth items in the room.
• Condensation occurs when the airflow from the
air conditioner cools the warm room air.
• This is the protector of the mechanism.
•
Wait about three minutes and operation will begin.
•
Is the air filter dirty? See air filter cleaning instructions.
• The room may have been very hot when the
room air conditioner was first turned on. Allow
time for it to cool down.
•
Has the setting temperature been set incorrectly?
• Are the indoor unit's air inlet or outlet vents
obstructed?
• For a noise that sounds like water flowing.
-This is the sound of freon flowing inside the air
conditioner unit.
• For a noise that sounds like the compressed air
releasing into atmosphere.
-
This is the sound of the dehumidifying water
being processed inside the air conditioning unit.
• This sound is generated by the
expansion/contraction of the inlet grille, etc. due
to changes of temperature.
• Has the circuit breaker been tripped?
10
-
-
-
15
11
-
-
-
Case Explanation See page
Call the service immediately in the following situations
1. Anything abnormal such as burning smell, loud noise etc. happen. Stop the unit and turn the breaker off. Never
try to repair by yourself or restart the system in such cases.
2. Main power cord is too hot or damaged.
3. Error code is generated by self diagnosis.
4. Water leaks from indoor unit.
5. Any switch, breaker (safety, earth) or fuse fails to work properly
User must carry routine checkup & cleaning to avoid unit’s poor performance.
In case of special situation, the job must be carried out by service person onlys
Memo
18 Ceiling Concealed Duct Type Air Conditioner
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