Lg S09AA Owners Manual [el]
LG
Room
Air Conditioner
OWNER'S MANUAL
LG
Visit us at http://www.lgservice.com
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.
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.
P/No.: MFL42262827
ENGLISH
∂§§∏¡πKÕ
2 Room Air Conditioner
Room 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.
A. Safety Precautions..............................3
B. Electrical Safety...................................6
Temporary Use of an Adapter...............6
Temporary Use of an Extension Cord...6
Symbols used in this Manual.................6
C. Product Introduction...........................7
Indoor Units...........................................7
Outdoor Unit..........................................7
D. Operating Instructions........................8
How to insert the Batteries ....................8
Wireless Remote Controller
Maintenance..........................................8
Operating Method..................................8
Wireless Remote Controller...................9
Operation Mode...................................10
Healthy Dehumidification Operation....11
Air Circulation Operation .....................11
Auto Operation
(Cooling Only Model)...........................11
Auto Changeover Operation
(Heat Pump Model) .............................12
Jet Cool/Heat Operation......................12
Smart Clean Operation........................13
Manual Smart Clean Operation...........14
Auto Smart Clean Operation ...............14
Auto Clean Operation..........................15
Energy-Saving Cooling Mode
(Optional).............................................16
Display Luminosity(Optional)...............16
Forced operation .................................16
Setting the Current Time .....................17
Timer Setting.......................................17
To cancel the timer setting ..................17
Sleep Mode .........................................17
Vertical / Horizontal Airflow Direction
Control (Optional)................................18
Auto Restart Function..........................18
E. Maintenance and Service..................19
Indoor Unit...........................................19
Outdoor Unit........................................21
Operation Tips!....................................21
Self-Diagnosis Function ......................21
Troubleshooting Tips!
Save time and money!.........................22
Call the service immediately in the
following situations ..............................22
Owner's Manual 3
Safety Precautions
ENGLISH
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must be followed.
■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by
the following indications.
■ Meanings of symbols used in this manual are as shown below.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage.
Be sure not to do.
Be sure to follow the instruction.
Always use a power plug and socket with
a ground terminal.
• 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.
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.
4 Room Air Conditioner
Safety Precautions
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.
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.
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.
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.
Owner's Manual 5
Safety Precautions
ENGLISH
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 hazards.
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.
Do not insert hands or other objects air inlet while the brush is
operating.
• Moving parts could cause personal injury and product failure
Do not move the brush by force.
• It may cause product failure
6 Room Air Conditioner
Electrical Safety
Electrical Safety
• This appliance must be properly grounded.
To minimize the risk of electric shock, you must alway plug into a grounded oulet.
• Do not cut or remove the grounding prong from the power plug.
• 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.
• If you have any doubt whether the air conditioner is properly grounded, have the wall receptacle and
circuit checked by a qualified electrician.
We strongly discourage the use of an adapter due to potential safety hazards. For temporary connections,
use only a genuine adapter, available from most local hardware stores. Ensure that the large slot in the
adapter is aligned with the large slot in the receptacle for a proper polarity connection.
To disconnect the power cord from the adapter, use one hand on each to avoid damaging the ground
terminal. Avoid frequently unplugging the power cord as this can lead to eventual ground terminal damage.
• Never use the appliance with a broken adapter.
We strongly discourage the use of an extension cord due to potential safety hazards.
Temporary Use of an Adapter
Temporary Use of an Extension Cord
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that may cause harm to the
air conditioner.
This symbol indicates special notes.
NOTE
Symbols used in this Manual
This appliance should be installed in accordance with national wiring regulations. This guide acts as a
guide to help to explain product features.
ENGLISH
Owner's Manual 7
Product Introduction
Product Introduction
Here is a brief introduction of the indoor and outdoor units. Please see the information specific to your
indoor unit type.
Indoor Units
Operation Indication Lamps
Outdoor Unit
Brush
Air Filter
Brush
Signal receiver
ON/OFF button
Front grille
LED
Flap
(Horizontal blade)
Air outlet
Hose
Suction Motor
Dust Box
On/Off
Energy-Saving
Cooling Mode
Timer
: Lights up during the system operation, error code and auto restart setting.
: Lights up during Energy-Saving Cooling Mode Operation
: Lights up during timer operation or sleep mode auto operation (Inverter Model only)
Defrost mode
* Hot start operation: Stops the indoor fan in heating operation for minutes to prevent cold air from blowing out
from unit.
* In defrost mode unit stops heating operation for few minutes to remove formation of ice on the heat
exchanger coils to maintain the efficiency.
: Lights up during defrost mode or *hot start operation
Air Intake Vents
Air Outlet Vents
Connecting
Drain Hose
Piping
Base Plate
Wires
8 Room Air Conditioner
Operating Instructions
1. Choose a suitable place where its safe & easy
to reach.
2. Fix the holder to wall etc with the supplied
screws firmly.
3. Slide the remote controller inside the holder.
1. Remote controller should never be exposed to
direct sunlight.
2. Signal transmitter & receiver should always be
clean for proper communication. Use a soft
cloth to clean them.
3. In case some other appliances also get
operated with remote control, change their
position or consult your serviceman.
1. The signal receiver is inside the unit.
2.
Aim the remote controller towards the unit to operate it.
There should not be any blockage in between.
NOTE
Operating Instructions
How to insert the Batteries
Wireless Remote Controller Maintenance
1. Remove the battery cover by pulling it according to the arrow direction.
2. Insert new batteries making sure that the (+) and (-) of battery are
installed correctly.
3. Reattach the cover by sliding it back into position.
1. Always use/replace both batteries of same type.
2. If the system is not to be used for a long time, remove the batteries to
save their working life.
3. If the display screen of remote controller starts, fading replace both of
the batteries.
4. Use 2 AAA(1.5 volt) batteries.
NOTE
Operating Method
Owner's Manual 9
ENGLISH
Cooling Operation
Auto Operation or Auto Changeover
Healthy Dehumidification Operation
Heating Operation
Air Circulation
Signal transmitter
Operation Mode
1
4
18
7
16
9
13
8
5
17
2
10
14
8
12
11
15
3
6
SLEEP
Operating Instructions
The controls will look like the following.
Wireless Remote Controller
1. ON/OFF BUTTON
Used to turn off/on the unit.
2. OPERATION MODE SELECTION BUTTON
Used to select the operation mode.
3. ROOM TEMPERATURE SETTING BUTTONS
Used to select the room temperature.
4. INDOOR FAN SPEED SELECTOR BUTTON
Used to select fan speed in four steps low, medium,
high and CHAOS.
5. JET COOL/HEAT BUTTON
Used to start or stop the speed cooling and heating .
(It operates fan in super high speed in cooling and
heating mode)
6. NEW CHAOS SWING
Used to stop or start louver movement and set the
desired up/down airflow direction.
7. TIMER AND TIME SETTING BUTTON
Used to set the time of starting / stopping and
sleeping operation
8. TIME SETTING BUTTONS
Used to adjust the time.
9. TIMER SET / CLEAR BUTTON
Used to set and to cancel the timer operation.
10. SLEEP MODE AUTO BUTTON
Used to set sleep mode auto operation.
11. ROOM TEMPERATURE CHECKING BUTTON
Used to check the room temperature.
12. RESET BUTTON
Used prior to resetting time.
13. FUNCTION SETTING BUTTON
Used to set auto clean and smart clean mode
regularly.
14. SMART CLEAN BUTTON
Used to start or stop the smart clean function.
15. CLEAR ALL BUTTON
Used to cancel all timer setting.
16. ENERGY SAVING COOLING BUTTON
Used to save Energy.
17. LED LUMINOSITY BUTTON
Used to adjust brush and display LED luminosity.
18. HORIZONTAL AIRFLOW DIRECTION CONTROL
BUTTON
Used to set the desired horizontal airflow direction.
10 Room Air Conditioner
4
2
1
3
Cooling
Auto
Changeover
Healthy
Dehumidification
Heating
(Heat pump model only)
Air Circulation
CHAOS Air Fan speed is on low. Fan speed is on medium. Fan speed is on high.
To lower the temperature by 1°C
To raise the temperature by 1°C
SLEEP
Operating Instructions
Press the ON/OFF BUTTON to turn
the unit on.
The unit will respond with a beep.
Open the door of the remote controller and press the
operation mode button. Each time the button is pressed, the
operation mode is shifted in the direction of the arrow.
Auto Operation (Cooling Only Model)
Auto Changeover (Heat Pump Model)
For cooling or heating operation set the desired indoor
temperature by pressing the ROOM TEMPERATURE
SETTING BUTTONS.
For cooling the temperature can be set within 18°C~30°C and
for heating the temperature range is 16°C~30°C.
Set the fan speed with the remote controller. You can select the fan speed in four steps-low,
medium, high and CHAOS by pressing the INDOOR FAN SPEED SELECTOR BUTTON.
Each time the button is pressed, the fan speed mode is shifted.
1
2
3
4
Natural wind by the CHAOS logic
❏
For fresher feeling, press the INDOOR FAN SPEED SELECTOR BUTTON and set to CHAOS mode.
In this mode, the wind blows like a natural breeze by automatically changing fan speed according to the CHAOS logic.
Operation Mode
Owner's Manual 11
ENGLISH
During Healthy Dehumidification Operation
❏ If you select the dehumidification mode on the OPERATION MODE SELECTION
BUTTON, the product starts to run the dehumidification function. It automatically sets
the room temperature and airflow volume to the best condition for dehumidification,
based on the sensed current room temperature.
In this case, however, the setting temperature is not displayed on the remote controller
and you are not able to control the room temperature either.
❏ During the healthy dehumidification function, the airflow volume is automatically set
according to the optimization algorithm responding to the current room temperature
status, so that the room condition is kept healthy and comfortable even in the very
humid season.
Operating Instructions
In this operation mode the actual setting temperature and the fan
speed are automatically set by the electronic control logic based on
the current room temperature. If you feel hot or cold press the
temperature setting buttons respectively for more cooling or
heating effect.
NOTE : You cannot set the actual setting temperature and the indoor fan
speed in this operation mode. But you can use the Chaos swing
in this operation.
If the system is not operating as desired, switch manually to another mode.
Auto Operation (Cooling Only Model)
Healthy Dehumidification Operation
This operation circulates the air without cooling or heating. It can
be activated by pressing the OPERATION MODE SELECTION
BUTTON. Once the air circulation is activated you can select the
air speed by pressing the INDOOR FAN SPEED SELECTOR
BUTTON.
CHAOS Air economizes power consumption and prevents overcooling. The fan speed is automatically
changed from high to low or vice versa, depending on the ambient temperature.
NOTE
Air Circulation Operation
12 Room Air Conditioner
Operating Instructions
Jet Cool/Heat Operation
Jet cool function can be used to cool the room quickly in hot summer. When this
function is turned on, the air conditioner runs in cooling operation mode with super
high fan speed and 18°C setting temperature for 30 minutes for fast and effective
cooling.
Similarly, jet heat function (available only in some models) warms up the room quickly
by operating at super high fan speed and 30°C setting temperature for 60 minutes.
You can activate this operation by pressing the JET COOL/HEAT BUTTON.
To change from jet cool mode to high fan speed cooling mode, press the JJET COOL/HEAT
BUTTON or INIDOOR FAN SPEED SELECTOR BUTTON or the ROOM TERPERATURE SETTING
BUTTON again.
• Jet cool function cannot be activated during auto changeover operations.
• In case of Inverter, Art Cool and Art Cool Wide(non-Deluxe) model, you can use jet heat function by
pressing JET COOL/HEAT BUTTON for heating operation.
• Art Cool and Art Cool Wide models close the side discharges during jet cool/heat operation, for strong
cooling and heating.
NOTE
Auto operation basically is heating or cooling function of the air
conditioner. But during this operation the controller changes the
operation mode automatically to keep the temperature within
±2°C with respect to the setting temperature.
Auto Changeover Operation (Heat Pump Model)
Owner's Manual 13
Operating Instructions
ENGLISH
Smart Clean Operation
The brush automatically cleans dust accumulated on the filter by reciprocating the air filter.
The efficiency of the air conditioner can be improved by cleaning the filter at the air inlet.
The cleaned dust is automatically collected into the dust box by the sucking motor.
You may directly clean the air filter.
It's better to clean the filter biannually or when needed.
1. When the Smart Clean starts, the indoor fan operates the 2-minute Air circulation operation and the
3-minute Heating opeartion.
Water is removed from the heat exchanger.
• At this time, the LED of the brush is turned on.
• The fan operates at the low speed.
• The louver is a little open.
2. When the fan is stopped after 5 minutes, the brush starts cleaning the dust from the filter.
• The brush moves to the right.
• The LED blinks while the brush is cleaning.
• The noise caused by the brush moving over the filter may be occurred.
3. When the brush arrives at the dust sucking hole at the right side of the filter, it reciprocates left and
right three times to clean the dust from the brush.
• At this time, the dust sucking motor operates for 1 minute and 30 seconds.
• Some noise may be generated from the motor to suck the dust.
4. When the sucked dust is collected into the dust box, the brush returns to the original position not to
interfere the operation of the air conditioner.
• The sucking motor is stopped.
• The LED of the brush blinks and moves to the left side of the filter.
5. When the brush arrives at the original position, the Smart Clean function is ended.
• The LED is turned off.
The Smart Clean function can be used by setting to manual or automatic.
• It is set to the manual mode at the time of the product shipment.
NOTE
Clean the air filter
5
2
Return setting
location
4
1
3
14 Room Air Conditioner
Operating Instructions
Manual Smart Clean Operation
When you press the Smart Clean button of the remote controller
with the air conditioner stopped, the Smart Clean function operates.
• The Smart Clean function does not operate while the air conditioner operates.
When you press the Smart Clean button of the remote controller while the Smart Clean
function operates, the Smart Clean function is ended.
At this time, the LED of the brush blinks and returns to the original position (at the left side of
the filter) not to interfere the operation of the air conditioner.
• When you press the Smart Clean button to enable the Smart Clean function while the brush is returning to the original
position, the Smart Clean starts after the brush arrives at the original position. (The LED is turned off while returning.)
• Smart Clean Set to the manual mode at the time of the product shipment.
• The Brush stop to working when the Front Grill is open. If the Front Grill is closed, the Brush restarts moving
for the cleaning Air Filter. If the Front Grill is opened for a long time while the Smart Clean operates, when
the Front Grill is closed, the Smart Clean is automatically ended and the brush returns to the initial position.
• When the Smart Clean Operation is ended, the Smart Clean Mark is automatically disappeared from the
screen of the remote controller after a while. But, if the Auto Smart Clean is set, the Smart Clean Mark is
not disappeared.
NOTE
Auto Smart Clean Operation
If the accumulated operation time of the product exceeds 30 hours, the Smart Clean automatically starts when the air
conditioner is ended.
1. Select ‘Smart clean’ by the function setting button( ) .
(The order of Auto clean ➞ Smart clean ➞ Off is repeated\whenever you press the button.)
2. Set the Smart clean function by using the SET/CLEAR button
• When the Auto Smart Clean Operation is set, the Smart Clean automatically operates, so the separate
operation is not needed.
• When it is ended due to the reserved operation or the sleeping operation, the Auto Smart Clean Operation
does not operate. When you operate the Manual Smart Clean with the Auto Smart Clean set, you can
check whether the Manual Smart Clean is executed or stopped by hearing the "beep" sound of the product.
(The Smart Clean Mark continues to be displayed on the screen of the remote controller.)
• Operating the Smart Clean may cause to generate some noise from the sucking motor and the brush. The
noise from the brush and the sucking motor may be felt even louder because the surrounding condition is
quiet at night.
NOTE
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