LG | LTNC302PLE0 | LG LT-H302PLE0 Owner’s Manual

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LG
LG Ceiling Cassette
Air Conditioner
OWNER'S MANUAL
Dear Owner
Thank you for installing LG Air Conditioner.
Your best choice guarantees you a great
performance and service to make your life
comfortable & pleasant.
IMPORTANT
• Please read this owner's manual carefully and thoroughly
before installing and operating your room air conditioner.
• Please retain this owner's manual for future reference after
reading it thoroughly.
P/No.: 3828A22005Z
Ceiling Cassette Air Conditioner Owner’s Manual
TABLE OF CONTENTS
Safety Precautions.........................3
FOR YOUR RECORDS
Write the model and serial numbers here:
Model #
Prior to Operation ..........................8
Serial #
You can find them on a label on the side of each unit.
Dealer's Name
Introduction ....................................9
Electrical Safety ...........................10
Operating Instructions.................11
Maintenance and Service ............30
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.
2 Ceiling Cassette Air Conditioner
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.
■ Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
■ 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.
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.
Install the panel and the
cover of control box
securely.
Always install a dedicated
circuit and breaker.
• There is risk of fire or electric
shock.
• Improper wiring or installation
may cause fire or electric shock
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.
Owner's Manual 3
Safety Precautions
Do not modify or extend the
power cable.
• 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.
Do not install, remove, or
re-install the unit by yourself
(customer).
• 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 cautious when unpacking
and installing the product.
• Sharp edges could cause injury.
Be especially careful of the case
edges and the fins on the
condenser and evaporator.
Be sure the installation area
does not deteriorate with age.
• If the base collapses, the air
conditioner could fall with it,
causing property damage,
product failure, and personal
injury.
■ 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.
• Moisture may condense and wet
or damage furniture.
Do not plug or unplug the
power supply plug during
operation.
• There is risk of fire or electric
shock.
Take care to ensure that power
cable could not be pulled out or
damaged during operation.
Do not place anything on
the power cable.
• There is risk of fire or electric
shock.
• There is risk of fire or electric
shock.
Do not touch(operate) the
product with wet hands.
Do not place a heater or
other appliances near the
power cable.
• There is risk of fire or electrical
shock.
• There is risk of fire and electric
shock.
4 Ceiling Cassette Air Conditioner
Safety Precautions
Do not allow water to run
into electric parts.
• It may cause There is risk of fire,
failure of the product, or electric
shock.
Do not store or use flammable
gas or combustibles near the
product.
• There is risk of fire or failure of
product.
Do not use the product in a
tightly closed space for a
long time.
• Oxygen deficiency could occur.
Gasolin
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.
• 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.
Do not open the inlet grill of the
product during operation.
(Do not touch the electrostatic
filter, if the unit is so equipped.)
When the product is soaked
(flooded or submerged),
contact an Authorized
Service Center.
• There is risk of physical injury,
electric shock, or product failure.
• There is risk of fire or electric
shock.
Ventilate the product from time to time when
operating it together with a stove, etc.
• There is risk of fire or electric shock.
Stop operation and close the window
in storm or hurricane. If possible,
remove the product from the window
before the hurricane arrives.
• There is risk of property damage,
failure of product, or electric shock.
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 electric shock.
Owner's Manual 5
Safety Precautions
When the product is not 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 could step
on or fall onto the outdoor unit.
• This could result in personal injury and product
damage.
■ Installation
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.
Keep level even when
installing the product.
• To avoid vibration or water
leakage.
90°
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.
Use two or more people to
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. Corrosion, particularly on
the condenser and evaporator fins,
could cause product malfunction or
inefficient operation.
■ Operation
Do not expose the skin directly to cool air
for long periods of time.
(Don't sit in the draft.)
• This could harm to your health.
6 Ceiling Cassette Air Conditioner
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.
Safety Precautions
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, 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.
x
Wa Thinner
Do not step on or put
anyting on the product.
(outdoor units)
Always insert the filter securely.
Clean the filter every two weeks
or more often if necessary.
Do not insert hands or other
objects through the air inlet or
outlet while the product is operated.
• There is risk of personal injury
and failure of product.
• A dirty filter reduces the efficiency
of the air conditioner and could
cause product malfunction or
damage.
• There are sharp and moving parts
that could cause personal injury.
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 or
maintaining the product.
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.
• Be careful and avoid personal
injury.
• There is risk of fire or explosion
Do not recharge or disassemble the batteries.
Do not dispose of 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.
Owner's Manual 7
Prior to Operation
Prior to Operation
Preparing for operation
1. Contact an installation specialist for installation.
2. Plug in the power plug properly.
3. Use a dedicated circuit.
4. Do not use an extension cord.
5. Do not start/stop operation by plugging/unplugging the power cord.
6. If the cord/plug is damaged, replace it with only an authorized replacement part.
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.
8 Ceiling Cassette Air Conditioner
Introduction
Introduction
Symbols used in this Manual
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to the
air conditioner.
NOTICE
This symbol indicates special notes.
Features
WARNING: This appliance should be installed in accordance with national wiring
regulations. This guide acts as a guide to help to explain product features.
Anti-bacteria
Anti-bacteria
Air Outlet
Air Inlet
Remote
Controller
Owner's Manual 9
Electrical Safety
Electrical Safety
WARNING: This appliance must be properly grounded.
To minimize the risk of electric shock, you must alway plug into a grounded oulet.
Preferred method
Ensure proper ground
exists before use
WARNING: Do not cut or remove the grounding prong from the
power wire.
WARNING: Attaching the adapter ground terminal to the wall
receptacle cover screw does not ground the appliance unless the
cover screw is metal and not insulated, and the wall receptacle is
grounded through the house wiring.
WARNING: If you have any doubt whether the air conditioner is
properly grounded, have the wall receptacle and circuit checked by
a qualified electrician.
10 Ceiling Cassette Air Conditioner
Operating Instructions
Operating Instructions
Indoor Unit, Outdoor Unit
Anti-bacteria
Anti-bacteria
Air Outlet
Air Inlet
Anti-bacteria
Remote
Controller
Operation Indication Lamps
Forced Operation : Operation procedures when remote control can't be used.
Defrost Mode
: Lights up during defrost mode or hot start operation.
(heat pump model only)
Timer
: Lights up during timer operation.
Signal Receptor : Receives the signal from remote control (signal receiving sound:
two short beeps and one long beep)
Filter Sign
: Lights up after 2400 hours from the time of first operation.
On/Off
: Lights up during system operation.
Outdoor Unit
Air Intake
(side, rear)
Connecting Wire
Power Wire
Air Outlet
Vents
Connection Tube
Drain Hose
Heat pump model: Cassette Type Air Conditioner for cooling and heating
Cooling model: Cassette Type Air Conditioner for cooling
Owner's Manual 11
Operating Instructions
Name and Function of Remote Controller
PQRCUSA0
1
2
3
9
4
10
5
11
6
12
7
13
8
14
15
1 Operation indication screen
2 Set temperature button
3 Wireless remote controller
Receiver
• Some kind of product could not
receive wireless signal.
4 Ventilation button
5 Operation mode selection
button
6 Sub-function button
7 Function setting button
8 Exit button
9 On/ Off button
10 Room temperature button
11 Fan speed button
12 Air flow button
13 Reservation/ Time setting
button
14 Setting/ Cancel button
15 Up, Down, Left, Right
❊ Some functions may not be operated and displayed depending on the product type.
❊ For detail usage except 'PQRCUSA0' model, refer to each manual.
Accessory
12V SIG GND
Connection Cable
(1EA, 10m)
Remote controller screw
(4 EA)
12 Ceiling Cassette Air Conditioner
Owner's / Installation
manual
Wired remote controller
installation board
Operating Instructions
Cooling mode (Standard operation)
It makes the room cool using pleasant and fresh air
1. Press
button to turn on
airecondition
2. Press
button to select Cooling
operation mode.
3. Adjust the desired temperature 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)
Cooling mode (Power Cooling)
It makes the room cool using pleasant and fresh air quickly
1. Press
button to turn on
airecondition
2. Press
button to select Cooling
operation mode
3. Press
button continuously until
"Po" displayed
Owner's Manual 13
Operating Instructions
Heating mode (Heat pump model only)
1. Press
button
2. Press
button to select Heating
operation mode.
3. Adjust the desired temperature by
pressing
buttons.
When setting the desiredtemperature
lower than room temperature, there is
only ventilation wind.
❖ Setting Temp Range : 16˚C~30˚C (60˚F~86˚F)
Dehumidification
1. Press
button, then
2. Press
button to select Heating
mode.
The temperature setting can not be
adjusted during operation this mode.
3. Press the
button to select airflow
rate SLO → LO → MED → HI →
(NONE)→
(The lists depends on products
function)
❖ NONE : Power level of Fan Speed
In rainy season or high humidity climate, it is possible
to operate simultaneously dehumidifier and cooling
mode to remove humidity effectively.
The airflow rate selection can be different or inactive
according to product.
14 Ceiling Cassette Air Conditioner
Operating Instructions
Auto Change Over mode (Heat pump model only)
1. Press
button
2. Press
button to select Auto
Change Over mode.
3. The setting temperature as the right
side picture can be set in both
cooling/ heating model
❖ Setting Temp Range : 18˚C~30˚C (64˚F~86˚F)
Auto Operation mode
1. Press
button
2. Press
button to select Auto
Operation mode.
3. Incase of operating under only
cooling mode, set '0' as standard
level, we can adjust the temperature
from step -2 to step 2
During operating Auto Operation mode:
• FAN SPEED button can be used.
• Manually other operation mode can be changed.
Please select the code defend on your feeling.
Currently
feeling
code
When feeling
cold
2
When feeling
slightly cold
1
When feeling
moderate
00
When feeling
slightly hot
-1
When feeling
hot
-2
Owner's Manual 15
Operating Instructions
Fan mode
1. Press
button
2. Press
button.
3. Press the
button to select airflow
rate SLO → LO → MED → HI →
(NONE)→
(The lists depends on products
function)
• When operate wind mode, the outdoor compressor
doesn't work
• FAN operation doesn't bring out cold air but air from
regular fan comes out.
• Have a function to circulate the indoor as it sends
out the air that doesn't have much temperature
difference with indoor.
16 Ceiling Cassette Air Conditioner
Operating Instructions
Temperature setting/ room temperature check
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.
press
button, the room
2 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
Owner's Manual 17
Operating Instructions
Airflow setting
We can simply adjust the desired airflow rate
1. Press
buttons to set the desired airflow
direction.
•
→
→
→
• Display of these lists depends on products
function,
Symbol
Description
Swril : vane paired opend cross
Up·Down : Vane move from up to down
automatically and continuously
Left·Right : Vane move from left to right
automatically and continuously
Sub function : Plasma(Optional)
pressing
1 Repeat
until
icon flash.
button
or cancel Plasma
2 Operate
Purification function by pressing
(
button.
icon appears/disappears on
display part up
to selection )
setting, press
3 After
to exit.
button
Details:
When turn the Off the product, HUMIDIFIER function is off (And also off when restart indoor)
In case of such model that has no HUMIDIFIER sub function, it doesn't appear when pressing
18 Ceiling Cassette Air Conditioner
button.
Operating Instructions
Function setting : Filter Sign Clear
This function is to clear the indicator of
indoor filter cleaning.
• Press
button
• Repeat pressing
flash.
button until the
icon
• When the
flashing, press the button to clear
this display.
When filter is covered by dust, it will reduce
cooling/ heating efficiency and
accumulate more electric power.
Therefore, do clean the filter whenever
cleaning time is expired.
Function setting : Child Lock
This function is to prevent children or
other people from using indoor.
• Press
button
• Repeat pressing
LOCK icon flash.
button until the
• When the
button flashing, press the button to
set this function.
• When setting this function, the
icon will be
displayed whenever entering any operation
except for Room temperature access. However,
it is possible to control normally by wireless
remote controller.
To release this setting, keep
pressing
button until the
icon flash and then enter
the
button.
Owner's Manual 19
Operating Instructions
Function setting : Elevation grill
This function is to move the indoor filter
up/ down for cleaning filter.
The setting is able to apply only to
product that has this function
• Press
button
• Repeat pressing
flash
button until the
icon
• Press
button to control the grill Up/
Down or stop it
•
button: move grill up from stopping or stop
grill from moving
•
button: move grill down from stopping or
stop grill from moving.
Indication with LCD: Up-UP,
Down-DN, Stop-SP
3. After setting, press
button to exit or system
will automatically release without input after 60
seconds.
Details:
In case of such model that has no this
sub function, it doesn't appear when
pressing SUBFUNCTION button.
20 Ceiling Cassette Air Conditioner
Operating Instructions
Function setting : Vane Angle Control
This function is to adjust angle at that airflow is blow out.
1. Press
button
2. Repeat pressing
the
button until
icon flash
3. Press
button to select
active vane: 1/2/3/4/All
1-4: control individually each vane
All: control all vane with the
same duration
4. Press
button to select
Vane number/ Vane angle.
Vane angle : 6 Step(P1~P6) & Sd
Sd : Standard angle
5. Press
button to adjust
the angle value
6. Press
button to complete and
active the setting process. (Airflow
direction function will be released
whenever setting vane angle)
7. Press
button to exit or system will
automatically release without any input
after 25 seconds.
Owner's Manual 21
Operating Instructions
Setting Current Time
1. Keep pressing
button for 4 secs
to enter Setting current time mode
(the '▼' Segment flashing)
2. Press
key to adjust the
current month/day
3. Press
key to move to AM/ PM
setting mode (the 'AM/ PM
segment will flash).
4. Setting AM/ PM value by
pressing
button.
5. Press
button to move to
'Hour' setting mode
(the 'Hour' segment will flash)
6. Setting Hour value by
pressing
button.
7. Press
button to move to
'Minute' setting mode
(the 'Minute' segment will flash)
8. Setting Minute value by
pressing
9. Press
button.
button to finish
10. In the process, press
key to
release and exit from setting mode
(In case of exit with incomplete
information, it will return to the
previous setting )
22 Ceiling Cassette Air Conditioner
Operating Instructions
Programming : Setting Simple Reservation
In case of there is not any reservation setup on system, it is possible to make a SIMPLE reservation
on indoor unit.
1. Press
button to enter the
Programming mode (the
flashing)
segment
If the indoor is ON, we can make the reservation
for turning OFF. In reserve, if the indoor is OFF,
we can set the timer for turning ON. The
reservation time is from 1 to 7 hours.
2. Press
button to adjust
reservation time.
3. Press
button to finish setting.
4. In case of using wireless remote controller, the
time reservation setting unit is every 10 minutes.
With wired remote controller, this value is
adjusted by every hour. But, in fact, it can
control with accuracy up to 10 minutes.
Ex.) By wireless remote controller we can set
the timer for turning OFF after 1 hour 10
minutes. It displays 2 hour on wired remote
controller but in fact, it will operate this
command after 1 hour 10 minutes.
5. Adjust the reservation time after finish
reservation setting will release the previous one.
Owner's Manual 23
Operating Instructions
Programming : Setting Sleep Reservation
This function is able to turn off Air conditioner when sleeping or after some hours.
1. Press
button to enter the
Programming mode
2. Repeat pressing
button to enter the SLEEP
reservation setting mode (the
segment
flashing)
3. Press
button to adjust
reservation time
The SLEEP reservation time
is from 1 to 7 hours
4. Press
button to finish setting.
Whenever reservation is done,
the
icon will flash
When this setting is released,
the
icon will disappear.
5. Adjust the reservation time after finish
reservation setting will release the previous one.
Please set a suitable time for sleep reservation (turning cooling for long time may be harmful to
health)
24 Ceiling Cassette Air Conditioner
Operating Instructions
Programming : Setting ON Reservation
This function is able to turn air conditioner ON after a setting time.
1. Press
button
2. Repeat pressing
button to enter
the ON reservation setting mode
(the
segment flashing)
3. Press
button to adjust
AM/ PM setting
4. Press
button to Hour
setting mode.
When the Hour icon flash,
please setting time
The setting range is within 1~12
5. Press
button to shift to
Minute setting mode
When the Minute icon flash,
please setting minute the
setting range is within 00~59
6. Press
button to finish setting.
Owner's Manual 25
Operating Instructions
Programming : Setting OFF Reservation
This function is able to turn air conditioner OFF after a setting time.
1. Press
button
2. Repeat pressing
button to enter
the OFF reservation setting mode
(the
segment flashing)
3. Press
button to adjust
AM/ PM setting
4. Press
button to shift to
Hour setting mode.
When the Hour icon flash,
please setting time
The setting range is within 1~12
5. Press
button to shift to
Minute setting mode
When the Minute icon flash,
please setting minute the
setting range is within 00~59
6. Press
26 Ceiling Cassette Air Conditioner
button to finish setting.
Operating Instructions
Programming : Weekly Reservation
The weekly reservation is active after setting current time
1. Press the
button to enter the
reservation setting mode.
2. Repeat pressing
button to enter
the weekly reservation setting mode
(the
segment flashing)
3. Set the ON/ OFF reservation for
day in week
- Press
to adjust timing and
Left/ Right to shift to next
setting mode
- A day is considered as
non-reservation if there is not
any time reservation within.
4. Press
button to finish setting.
Owner's Manual 27
Operating Instructions
Programming : Holiday Reservation
This function is to automatically stop the machine working on some days.
1. Press
button to enter the
reservation setting mode
2. Repeat pressing
button to enter
the holiday reservation setting mode
(the
segment flashing)
3. Press
button to move to
holiday position.
4. Press
button to set or
release a selected day as holiday
or not.
(❊ the holiday is indicated
with a underline)
5. If there is any holiday from Monday
to Sunday, the
segment
on LCD will be displayed.
6. Press the
button to exit or if
there is not any input, system will
release any setting after 10 seconds
7. It is possible to set the air conditioner OFF in
every "holiday"
( ex. 9:00, 10:00, 13:00 )
28 Ceiling Cassette Air Conditioner
Operating Instructions
Ventilation setting
Incase of there is linkage between ventilator and air conditioner, it is able to control this ventilator.
1. Press Ventilation button to turn ON/ OFF the
ventilator.
2. In case of operating the ventilator, the
‘Ventilation’ icon will be displayed.
Operating ventilation
Stop ventilation
3. When turn off ventilator, the ‘Ventilation’ icon
disappears.
4. Please refer the Ventilation instruction in
function setting menu in order to connect a
ventilator to air conditioner.
In case of not-connected ventilator, this ventilation
function can not be operated.
Aircon
Ventilator
220V data link
Owner's Manual 29
Maintenance and Service
Maintenance and Service
CAUTION Before performing any maintenance, turn off the main power to the system.
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.
NOTICE
Supply power must be disconnected before cleaning
the indoor unit.
Anti-biofilter
Air
Intake
Air Outlet
Remote
Controller
Air Filters
The air filters behind the front grille should be
checked and cleaned once every 2 weeks or more
often if neccessary.
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
Rack
be removed, do not touch the metal
parts of the indoor unit.
It may cause an injury.
Air Filter
■ 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
SI
N NER
conditioner.
B
e n zene
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.
SCO
U RIN G
C LB
A R GER
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.
Outdoor Unit
The heat exchanger coils and panel vents of the outdoor unit
should be checked regularly. If clogged with dirt or soot, the
heat exchanger and panel vents may be professionally
steam cleaned.
NOTICE
Dirty or clogged coils will reduce the operating efficiency of the
system and cause higher operating costs.
30 Ceiling Cassette Air Conditioner
Air Intake
(side, rear)
Air Outlet
Connecting Wire
Power Wire
Connection Pipe
Drain Hose
Maintenance and Service
When the air conditioner is not going to be used for a long time.
When air conditioner is not going to be used for a long time.
1. Operate the air conditioner at the following settings for 2 to 3 hours.
• Type of operation: Fan operation mode.(Refer to page 16.)
• This will dry out the internal mechanisms.
2. Turn off the 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.
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.
When the air conditioner is to be used again.
1. Clean the air filter and install it in the indoor unit.
(Refer to page 30 for cleaning it.)
2. Check that the air inlet and outlet of the indoor/outdoor unit are not blocked.
3. Check that the ground wire is connected correctly. It may be connect to the indoor unit side.
Operation Tips
Do not overcool the room.
Keep blinds or curtains
closed.
This is not good for your health
and wastes electricity.
Do not let direct sunshine enter
the room when the air
conditioner is in operation.
Make sure that the doors
and windows are shut tight.
Clean the air filter regularly.
Avoid opening doors and
Blockages in the air filter
windows as much as possible
reduce the airflow and lower
to keep the cool air in the room. cooling and dehumidifying
effects. Clean at least once
every two weeks.
Keep the room temperature
uniform.
Adjust the vertical and
horizontal airflow direction to
ensure a uniform temperature
in the room.
Ventilate the room
occasionally.
Since windows are kept closed,
it is a good idea to open them
and ventilate the room now and
then.
Owner's Manual 31
Maintenance and Service
Troubleshooting Tips! Save time and money!
Check the following points before requesting repairs or service.... If the fault persists, please contact
your dealer or service center.
Case
Explanation
See page
The air conditioner does not
operate.
• Have you made a mistake in timer operation?
23~28
• Has the fuse blown or has the circuit breaker
been tripped?
-
The room has a peculiar odor.
• Check that this is not a damp smell exuded by
the walls, carpet, furniture, or cloth items in the
room.
-
It seems that condensation is
leaking from the air
conditioner.
• Condensation occurs when the airflow from the
air conditioner cools the warm room air.
Air conditioner does not
operate for about 3 minutes
when restarted.
• This is the protector of the mechanism.
Does not cool or heat
effectively.
• Is the air filter dirty? See air filter cleaning
instructions.
• Wait about three minutes and operation will
begin.
-
-
30
• The room may have been very hot when the
room air conditioner was first turned on. Allow
time for it to cool down.
The air conditioner operation is
noisy.
• Has the temperature been set incorrectly?
17
• 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.
-
Remote control display is faint,
or no display at all.
• Are the batteries depleted?
Crack sound is heard.
• This sound is generated by the
expansion/constriction of the front panel, etc.
due to changes of temperature.
-
• Cleaning the filter, press the Timer button and
◀ button of wired remote controller at the same
time for 3 sec.
-
Filter sign lamp (LED) is ON.
• Are the batteries inserted in the opposite (+)
and (-) directions?
32 Ceiling Cassette Air Conditioner
-
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