LG | NHXM70D1A1.ANWALAP | LG NHXM50D1A1.ANWALAP Owner’s Manual

ENGLISH
OWNER’S MANUAL
AIR CONDITIONER
Please read this manual carefully before operating
your set and retain it for future reference.
TYPE : Ceiling Concealed Duct – High static
www.lg.com
P/NO : MFL67870313
TABLE OF CONTENTS
FOR YOUR RECORDS
Safety Precautions.................3
Write the model and serial numbers here:
Model #
Serial #
Prior to Operation ..................6
You can find them on a label on the side of each unit.
Dealer's Name
Date Purchased
Product Introduction..............7
■ Staple your receipt to this page in the event you need
it to prove date of purchase or for warranty issues.
Operating Instructions.........10
READ THIS MANUAL
Maintenance and Service ....22
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.
Before you Call
for Service ..........................24
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.
2 Indoor Unit
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.
WARNING
This symbol indicates the possibility of death or serious injury.
CAUTION
This symbol indicates the possibility of injury or damage to properties only.
■ Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
WARNING
■ Installation
Do not use a defective or
underrated circuit breaker. Use
this appliance on a dedicated
circuit.
• There is risk of fire or electric
shock.
Install the panel and the cover
of control box securely.
For electrical work, contact the
dealer, seller, a qualified
electrician, or an Authorized
Service Center.
• Do not disassemble or repair the
product. There is risk of fire or
electric shock.
Always install a dedicated
circuit and breaker.
Always ground the product.
• There is risk of fire or electric
shock.
Use the correctly rated breaker
or fuse.
• There is risk of fire or electric
shock.
• Improper wiring or installation
may cause fire or electric shock
• There is risk of fire or electric
shock.
Do not modify or extend the
power cable.
Do not install, remove, or reinstall the unit by yourself
(customer).
Be cautious when unpacking
and installing the product.
• There is risk of fire or electric
shock.
For installation, always contact
the dealer or an Authorized
Service Center.
• There is risk of fire, electric shock,
explosion, or injury.
• There is risk of fire, electric shock,
explosion, or injury.
• Sharp edges could cause injury.
Be especially careful of the case
edges and the fins on the
condenser and evaporator.
Do not install the product on a
defective installation stand.
Be sure the installation area
does not deteriorate with age.
• It may cause injury, accident, or
damage to the product.
• If the base collapses, the air
conditioner could fall with it,
causing property damage,
product failure, and personal
injury.
Owner’s Manual 3
ENGLISH
Safety Precautions
Safety Precautions
■ Operation
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.
Take care to ensure that power
cable could not be pulled out or
damaged during operation.
• Moisture may condense and wet
or damage furniture.
• There is risk of fire or electric
shock.
Do not touch the power cable
during operation
Do not touch(operate) the
product with wet hands.
• There is risk of fire or electric
shock.
Do not allow water to run into
electric parts.
• It may cause There is risk of fire,
failure of the product, or electric
shock.
• There is risk of fire or electrical
shock.
Do not store or use flammable
gas or combustibles near the
product.
• There is risk of fire or failure of
product.
Do not place anything on the
power cable.
• There is risk of fire or electric
shock.
Do not place a heater or other
appliances near the power
cable.
• There is risk of fire and electric
shock.
Do not use the product in a
tightly closed space for a long
time.
• Oxygen deficiency could occur.
When flammable gas leaks,
turn off the gas and open a
window for ventilation before
turn the product on.
If strange sounds, or small or
smoke comes from product.
Turn the breaker off or
disconnect the power supply
cable.
Stop operation and close the
window in storm or hurricane.
If possible, remove the product
from the window before the
hurricane arrives.
• Do not use the telephone or turn
switches on or off.
There is risk of explosion or fire
• There is risk of electric shock or
fire.
• There is risk of property damage,
failure of product, or electric
shock.
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 product failure.
When the product is soaked
(flooded or submerged),
contact an Authorized Service
Center.
• There is risk of fire or electric
shock.
Ventilate the product from time to time when
operating it together with a stove, etc.
Be cautious that water could
not enter the product.
• There is risk of fire, electric shock,
or product damage.
Turn the main power off when cleaning or
maintaining the product.
• There is risk of fire or electric shock.
• There is risk of electric shock.
When the product is not be used for a long time,
turn off the breaker.
Take care to ensure that nobody could step on or
fall onto the outdoor unit.
• There is risk of product damage or failure, or
unintended operation.
4 Indoor Unit
• This could result in personal injury and product
damage.
Safety Precautions
■ Installation
Always check for gas (refrigerant)
leakage after installation or repair
of product.
• Low refrigerant levels may
cause failure of product.
Do not install the product where the noise
or hot air from the outdoor unit could
damage the neighborhoods.
• It may cause a problem for your
neighbors.
Install the drain hose to ensure
that water is drained away
properly.
• A bad connection may cause
water leakage.
Use two or more people to lift and
transport the product.
• Avoid personal injury.
■ Operation
Do not expose the skin directly
to cool air for long periods of
time. (Don't sit in the draft.)
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.
• This could harm to your health.
• There is risk of damage or loss
of property.
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.
Always insert the filter securely.
Clean the filter every two weeks
or more often if necessary.
• A dirty filter reduces the efficiency of
the air conditioner and could cause
product malfunction or damage.
Use a firm stool or ladder when
cleaning or maintaining the
product.
• Be careful and avoid personal
injury.
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 insert hands or other objects
through the air inlet or outlet while the
product is operated.
• There are sharp and moving parts
that could cause personal injury.
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 explosion
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.
Keep level even when installing
the product.
• To avoid vibration or water
leakage.
Do not install the product where
it will be exposed to sea wind
(salt spray) directly.
• It may cause corrosion on the product.
Corrosion, particularly on the condenser
and evaporator fins, could cause product
malfunction or inefficient operation.
Do not block the inlet or outlet
of air flow.
• It may cause product failure.
Do not step on or put anyting
on the product. (outdoor units)
• There is risk of personal injury
and failure of product.
Do not drink the water drained
from the product.
• It is not sanitary and could cause
serious health issues.
Do not recharge or
disassemble the batteries.
Do not dispose of batteries in a
fire.
• They may burn or explode.
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 hazards.
Owner’s Manual 5
ENGLISH
CAUTION
Prior to Operation
Prior to Operation
Preparing for operation
1. Contact an installation specialist for installation.
2. Use a dedicated circuit.
Usage
1. Being exposed to direct airflow for an extended period of time could be hazardous to your health.
Do not expose occupants, pets, or plants to direct airflow for extended periods of time.
2. Due to the possibility of oxygen deficiency, ventilate the room when used together with stoves or
other heating devices.
3. Do not use this air conditioner for non-specified special purposes (e.g. preserving precision
devices, food, pets, plants, and art objects). Such usage could damage the items.
Cleaning and maintenance
1. Do not touch the metal parts of the unit when removing the filter. Injuries can occur when handling
sharp metal edges.
2. Do not use water to clean inside the air conditioner. Exposure to water can destroy the insulation,
leading to possible electric shock.
3. When cleaning the unit, first make sure that the power and breaker are turned off. The fan rotates
at a very high speed during operation. There is a possibility of injury if the unit’s power is
accidentally triggered on while cleaning inner parts of the unit.
Service
For repair and maintenance, contact your authorized service dealer.
6 Indoor Unit
Product Introduction
ENGLISH
Product Introduction
Name and function of parts
1
4
Air intake
vents
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.
6 7
2
5
Air outlet
vents
Remote
Controller
3
8
What to do before operation
If your installation has a customized
control system, ask your LG dealer for
the operation that corresponds to your
system.
Owner’s Manual 7
Product Introduction
Wired Remote Controller
1
10
9
8
2
3
7
4
11
12
13
5
6
14
15
Please attach the inform label inside of the door.
Please choose proper language depend on your
country.
1 OPERATION INDICATION
SCREEN
2 SET TEMPERATURE BUTTON
3 FAN SPEED BUTTON
4 ON/OFF BUTTON
5 OPRATION MODE SELECTION
BUTTON
6 WIRELESS REMOTE
CONTROLLER RECEIVER
• Some products don't receive the
wireless signals.
7 AIR FLOW BUTTON
8 SUBFUNCTION BUTTON
9 FUNCTION SETTING BUTTON
10 VENTILATION BUTTON
11 RESERVATION
12 UP,DOWN,LEFT,RIGHT BUTTON
• To check the indoor temperature,
press
button.
13 ROOM TEMPERATURE BUTTON
14 SETTING/CANCEL BUTTON
15 EXIT BUTTON
❊ Some functions may not be operated and displayed depending on the product type.
NOTE
❈ 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.
❈ The actual product can be different from above contents depending upon model type.
❈ When using simultaneous operation system, whenever press remote controller button, system will
approximately operate after 1~2 minutes.
8 Indoor Unit
Product Introduction
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.
PQWRHQ0FDB
CAUTION
• 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)
NOTE
❈ For more details refer to the Wireless Remote Control Accessory manual.
❈ The actual product can be different from above contents depending upon model type.
❈ The wireless remote controller does not operate When using simultaneous operation system.
Owner’s Manual 9
ENGLISH
Wireless Remote Controller (Accessory)
Operating instructions
Operating instructions
Standard Operation - Standard Cooling
It cools the room by comfortable and clean wind.
1 Press
indoor.
button to turn on the
button to select
2 Press
Cooling operation mode.
the desired temperature
3 Adjust
by pressing
buttons.
Press
button to check the
Room temperature.
When setting the desired
temperature higher than room
temperature, only ventilation
wind is blow out instead of
cooling wind.
❈ Setting Temp Range : 18˚C~30˚C (64˚F~86˚F)
Standard Operation - Heating Mode
It supplies warm wind to the indoor
1 Press
indoor.
button to turn on the
button to select
2 Press
Heating mode.
(To check the indoor temperature,
press the room temperature button.)
the desired temperature
3 Adjust
by pressing
buttons.
When setting the desired
temperature lower than room
temperature, there is only
ventilation wind.
• Heating drive only operates at the cooling and heating model.
• Heating doesn't operate at cooling exclusive model.
10 Indoor Unit
Operating instructions
1 Press
indoor.
button to turn on the
button to select
2 Press
Dehumidification mode.
The temperature setting can not be
adjusted during operation this mode.
the
button to select
3 Press
airflow rate weak → medium →
strong.
(The initial wind powerfulness of
humidity removal drive is 'weak'.)
• In rainy season or high humidity climate, it is possible to operate simultaneously dehumidifier and
cooling mode to remove humidity effectively.
• The menu item of wind powerfulness might not be partially selected according to the product.
Auto Changeover Mode
Change temperature is the function to setup air-cooling and heating drive automatically changeable
according to the temperature at artificial intelligence drive mode.
1 Repeaticonpressing
flash.
button until
button to change.
2 Press
❈ Converting temp value : 1~7
button to complete
3 Press
and active the setting process.
button to exit or
4 Press
system will automatically release
without any input after 25
seconds.
❈ When exiting without pressing
set button, the manipulated
value is not reflected.
Owner’s Manual 11
ENGLISH
Standard Operation - Dehumidification Mode
It removes humidity while air-cooling weakly.
Operating instructions
Standard Operation - Auto Operation Mode
1 Press
indoor.
button to turn on the
button to select
2 Press
Artificial intelligence Mode.
can adjust the
3 You
temperature as the
picture on the right
for cooling and
heating model.
the case of
4 For
cooling exclusive,
as the picture on
the right, you can
adjust the
temperature from
hot to cold, from
"-2" to "2" based
on "00".
When cold
When cool
When appropriate
When warm
When hot
During operating Auto Operation mode:
• We can use the FAN SPEED button
• We can change manually to other operation mode.
Standard Operation - Fan Mode
It blows the air as it is in the indoor, not the cold wind.
1 Press
indoor.
button to turn on the
2 Press
Mode.
button to select Fan
time pressing
button, you
3 Every
can select wind flow in order of
feeble → weak → medium → strong
→ automatic.
When running ventilation,
compressor of AHU doesn't work.
• Ventilation drive does not release cool wind but general fan
• Because it releases the wind that has no temperature difference from the room, it functions to
circulate the inside air.
• The menu item of wind powerfulness might not be partially selected according to the product.
12 Indoor Unit
Operating instructions
Temperature Setting
can simply adjust the desired
1 We
temperature.
• Press the
buttons to adjust the
desired temperature.
: Increase 1˚C or 2˚F per one time
pressing
: Decrease 1˚C or 2˚F per one time
pressing
• Room temp: Indicate the current room
temperature.
• Set temp: Indicate the temperature that user
want to set.
❈ Depend on what kind of controller, the desired
temperature can be adjusted at 0.5˚C or 1˚F.
Cooling operation:
- The cooling mode doesn't work if
desired temperature is higher than room
temperature Please lower the desired
temperature.
Heating operation:
- The heating mode doesn't work if desired
temperature is lower than room
temperature Please increase the desired
temperature.
Room Temperature Check
press
button, the room
1 Whenever
temperature will be displayed within 5
seconds.
After 5 seconds, it turns to display the
desired temperature.
Because of location of remote controller,
the real room temperature and the this
displayed value can be different
• For air-cooling drive, from 18°C to 30°C, and for heating drive, from 16°C to 30°C, you can select
desired temperature.
• 5°C is proper for the difference between room and outside temperature.
Owner’s Manual 13
ENGLISH
Standard Operation - Temperature Setting/Room Temperature Check
Operating instructions
Function setting - Child Lock
It is the function to use preventing children or others from careless using.
button repeatedly until
1 Press
the
is flashing.
moving to 'setup' icon area by
2 Ifusing
button, 'setup' icon
blinks, and child lock function is
setup if pressing
button at
that time.
cancelling lock function, if moving
3 When
to 'cancel' icon by pressing
button
and then, pressing
button, child lock
function is cancelled.
button to exit.
4 Press
❈ After setup, it automatically gets out of setup
mode if there is no button input for 25 seconds.
❈ When exiting without pressing set button, the
manipulated value is not reflected.
Function Setting - Change Temp
Change temperature is the function to setup air-cooling and heating drive automatically changeable
according to the temperature at artificial intelligence drive mode.
1 Repeaticonpressing
flash.
button until
button to change.
2 Press
❈ Converting temp value : 1~7
button to complete
3 Press
and active the setting process.
button to exit or system
4 Press
will automatically release without any
input after 25 seconds.
❈ When exiting without pressing set button,
the manipulated value is not reflected.
14 Indoor Unit
Operating instructions
press function setup
1 Please
button. If pressing function setup
button repeatedly, it moves to
time setup menu. ‘Time setup’
icon is indicated at that time and date
blinks at current time indication area.
Ex) Changing Current Time as
'Monday / AM 10:20'.
2 Press
day.
key to adjust the current
key to move to AM/ PM setting
3 Press
mode (the 'AM/ PM segment will flash).
AM/ PM value by
4 Setting
pressing
button.
button to move to 'Hour'
5 Press
setting mode. (the 'Hour' segment will
flash)
Hour value by pressing
6 Setting
button.
Owner’s Manual 15
ENGLISH
Function setting - Changing Current Time
Operating instructions
button to move to 'Minute'
7 Press
setting mode. (the 'Minute' segment will
flash)
Minute value by pressing
8 Setting
button.
9 Press
10
16 Indoor Unit
button to finish.
In the process, press
button to release and exit
from setting mode.
(In case of exit with
incomplete information, it will return to
the previous setting)
❈ When exiting without pressing set
button, the manipulated value is not
reflected.
Operating instructions
You can set the reservation conveniently in the units of 1 hour from 1 hour to 7 hours.
button to enter the
1 Press
Programming mode.
(the
segment flashing)
Ex) Setting Simple Reservation
time as '3'.
2 Press
time.
3 Press
button to adjust reservation
button to finish setting.
button to exit.
4 Press
❈ After setup, it automatically gets out of
setup mode if there is no button input
for 25 seconds.
❈ When exiting without pressing set
button, the manipulated value is not
reflected.
❈ When simple reservation setup, product automatically runs or stops after the time that is set.
Owner’s Manual 17
ENGLISH
Programming - Simple Reservation
Operating instructions
Programming : Weekly Reservation
You can set the daily reservation in weekly unit.
Weekly reservation keeps operating until before you cancel it once you setup
1
Please move to reservation setup mode by pressing reservation button.
❈ You can setup two weekly reservations for one day, and up to fourteen
reservations for a week.
For example, to setup (Tuesday morning 11:30 turned on ~ afternoon 12:30
turned off), you setup in order below.
move to 'weekly' by
2 Please
repeatedly pressing reservation
button. 'Weekly' blinks at this time.
select weekly reservation or
3 Please
weekly reservation ¡ by using
button.
❈ You can setup two reservations,
weekly reservation 1 and weekly
reservation 2, for a day.
move to 'date' setup part by
4 Please
using
button. If 'date'
indication blinks, please setup date.
You can setup date from Monday to
Sunday.
move to 'AM/PM' setup part
5 Please
of turning on by using
button.
move to 'hour' setup part of
6 Please
turning on by using
button.
- It is the part to setup the time at
which air-conditioner is turned on.
change time by using
button.
7 Please
- You can setup hour 0~12.
8 Please move to 'minute' setup part of turning on by using
9 If 'minute' indication blinks, please setup 'minute' by using
18 Indoor Unit
button.
button
Operating instructions
ENGLISH
move to 'AM/PM' setup part
10 Please
of turning off by using
button.
- AM/PM setup is identical with
turning on time setup.
11
Please move to 'hour' setup part
of turning off by using Right
button.
- It is the part to reserve the time
at which air-conditioner is
turned off.
- If 'hour' indication blinks, please
setup 'hour'.
❈ Please setup 'hour' and 'minute'
identically with the method to
setup turning on time.
finishing weekly reservation setup, please press setup/cancellation button.
12 IfWeekly
reservation setup for the day that you set is finished.
you setup with the method identical with above by selecting the day that
13 Ifyou'd
like to setup, it operates weekly reservation.
If you setup both turning on reservation time and turning off reservation time
identically, it doesn't operate reservation drive.
Weekly reservation explanation
Reservation
number
Turning on time
Turning off time
Under bar: the indication that there is weekly reservation for
corresponding day
❈ Indoor unit is turned on to desired temperature if it is configured using up/down button during
preset of weekly operation time. (Temperature selection range : 18℃~30℃)
- When desired temperature is not set, it is turned on automatically with desired temperature of
previous operation.
Owner’s Manual 19
Operating instructions
Programming - Sleep Reservation
Sleep reservation is the function of air-conditioner to run and stop after certain period of time at sleep
mode before sleep. When connected to a ventilation product and set the sleep reservation, when it
goes to the sleep mode, after the set time has elapsed.
button to enter the
1 Press
Programming mode.
Ex) Setting Sleep Reservation
time as '3'.
pressing
button to enter the
2 Repeat
SLEEP reservation setting mode.
(
3 Press
time.
segment flashing)
button to adjust reservation
The SLEEP reservation time is from 1 to
7 hours.
button to finish setting.
4 Press
Whenever reservation is done.
button to exit.
5 Press
❈ After setup, it automatically gets out of
setup mode if there is no button input
for 60 seconds.
❈ When exiting without pressing set
button, the manipulated value is not
reflected.
- If reservation is setup, 'sleep'
indication shows up at the lower part
of LCD screen.
finishing sleep reservation setup,
6 Ifair-conditioner
product operates sleep
drive and stops after the time that is set.
CAUTION
Please reserve proper time at sleeping. (Too much air-cooling is not good for your health.)
• Because it automatically adjusts desired temperature for comfortable air-cooling at sleep drive,
there could be difference between remote controller's desired temperature and air-conditioner
body's desired temperature.
• Sleep reservation operates as off reservation for the product whose temperature adjustment isn't
controlled by unit of 0.5°C.
20 Indoor Unit
Operating instructions
ENGLISH
Programming : Holiday Reservation
It automatically stops at reserved day that you set.
press
button.
1 Please
It enters into reservation
setup mode.
move to 'holiday' by repeatedly
2 Please
pressing
button.
move to 'date' that
3 Please
you want to setup holiday
by using
button.
appoint or cancel holiday by
4 Please
using
or
button.
For example, when you setup
Monday/Friday to holiday
- 'Monday', 'Friday' letter disappears.
press
5 Please
holiday setup.
button if finishing
❈ If it comes to appointed holiday,
air-conditioner automatically stops.
Once you setup holiday appointment,
until before you cancel holiday setup,
air-conditioner automatically stops
within one hour even though you run
air-conditioner.
Owner’s Manual 21
Maintenance and Service
Maintenance and Service
CAUTION: Before performing any maintenance, turn off the main power to
the system.
Grille, Case, and Remote Controller
❏ Turn the system off before cleaning. To clean, wipe with
a soft, dry cloth. Do not use bleach or abrasives.
NOTE
Power supply must be disconnected before
cleaning the indoor unit.
Air Filters
The air filters behind the front grille should be checked and
cleaned once every 2 weeks or more often if neccessary.
Air outlet vent
Air filters
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 (40°C or more) is used, it may
be deformed.
Air outlet vent
■ Never use any of the followings:
• Water hotter than 40°C.
Could cause deformation
and or discoloration.
• Volatile substances.
Could damage the
B en e
surfaces of the air
z en
conditioner.
22 Indoor Unit
SI
N NER
SCO
U R IN
C LB
A R GE
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.
Maintenance and Service
When it is not going to be used for
a long time.
When the air conditioner is to be used again.
Operate the air conditioner at the
following settings for 2 to 3 hours.
• Type of operation: Fan operation mode.
• This will dry out the internal mechanisms.
Turn off the breaker.
Clean the air filter and install it in the
indoor unit.
Check that the air inlet and outlet of the
indoor/outdoor unit are not blocked.
CAUTION
Turn off the breaker when the air conditioner
is not going to be used for a long time.
Dirt may collect and may cause a fire.
Check that the ground wire is
connected correctly. It may be connect
to the indoor unit side.
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.
Operation Tips
Do not overcool the room.
Keep blinds or curtains
closed.
Keep the room temperature
uniform.
This is not good for the health
and wastes electricity.
Do not let direct sunshine
enter the room when the air
conditioner is in operation.
Adjust the vertical and
horizontal airflow direction to
ensure a uniform temperature
in the room.
Make sure that the doors
and windows are shut tight.
Clean the air filter regularly.
Ventilate the room
occasionally.
Avoid opening doors and
windows as much as possible
to keep the cool air in the
room.
Blockages in the air filter
reduce the airflow and lower
cooling and dehumidifying
effects. Clean at least once
every two weeks.
Since windows are kept
closed, it is a good idea to
open them and ventilate the
room now and then.
Owner’s Manual 23
ENGLISH
When the air conditioner is not going to be used for a long time.
Maintenance and Service
Before you call for service...
?
Troubleshooting Tips! Save time and money!
Check the following points before requesting repairs or service.... If the malfunction persist,
please contact your dealer.
The air conditioner
does not operate.
The room has a
peculiar odor.
It seems that
condensation is
leaking from the air
conditioner.
Air conditioner does
not operate for about
3 minutes when
restart.
• 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.
Does not cool or heat
effectively.
The air conditioner
operation is noisy.
Crack sound is
heard.
• 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 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/
constriction of the front
panel, etc. due to
changes of
temperature.
• Have you made a
mistake in timer
operation?
• Has the fuse blown
or has the circuit
breaker been
tripped?
Remote control
display is faint, or no
display at all.
• Are the batteries
depleted?
• Are the batteries
inserted in the
opposite (+) and (-)
directions? Filter sign lamp is
ON.
• Cleaning the filter,
press the Timer button
and ◀ button of wired
remote controller at
the same time for 3
sec.
NOTE
WATER RESISTANT: The outdoor side of this appliance is WATER RESISTANT.
The indoor side is not water resistant and should not be exposed to
excess water.
24 Indoor Unit
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