ENGLISH
FRANCAIS
ESPAÑOL
OWNER’S MANUAL
AIR
CONDITIONER
Please read this manual carefully before operating
your set and retain it for future reference.
TYPE : Ceiling Concealed Duct
http://www.lghvac.com
www.lg.com
P/NO : MFL67449212
Air Conditioner Owner’s Manual
TABLE OF CONTENTS
Safety Precautions................................3
FOR YOUR RECORDS
Product Introduction ............................6
Write the model and serial numbers here:
Indoor Units..........................................6
Outdoor Unit.........................................6
Simple Wired Remote Controller..........7
Operating Introductions .......................8
Standard Operation - Cooling Mode ....8
Standard Operation - Heating Mode ....9
Standard Operation - Auto Operation ..9
Model #
Serial #
You can find them on a label on the side of each unit.
Dealer's Name
Date Purchased
n Staple your receipt to this page in the event you need it
to prove date of purchase or for warranty issues.
READ THIS MANUAL
Standard Operation - Fan Mode ........11
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.
Function Setting Fan Speed Selection..........................12
You'll find many answers to common problems in the
chart of troubleshooting tips. If you review our chart of
Standard Operation Dehumidification Mode.......................10
Function Setting - Room Temperature
Check .................................................13
Function setting - Child Lock..............14
Different mode drive ..........................15
Maintenance and Service ...................16
When the air conditioner is not going
to be used for a long time...................17
Operation Tips....................................17
Before you call for service..................18
2 Air Conditioner
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.
Safety Precautions
Safety Precautions
WARNING
This symbol indicates the possibility of death or serious injury.
CAUTION
This symbol indicates the possibility of injury or damage.
WARNING
Always ground the product.
• There is a risk of electric shock.
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.
Use the correctly rated breaker or fuse.
• There is risk of fire or electric shock.
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.
Be sure to check the refrigerant to the
used. Please read the label on the product.
Do not use a defective or underrated
circuit breaker. Use the correctly rated
breaker and fuse.
• 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.
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.
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.
Don't use a power cord, a plug or a loose
socket which is damaged.
• Incorrect refrigerant used can prevent the
normal operation of the unit.
• Otherwise it may cause a fire or electrical
shock.
Do not place a heater or other heating
appliances near the power cable.
Do not allow water to run into electric
parts. Install the unit away from water
sources.
• There is risk of fire and electric shock.
• There is risk of fire, failure of the product, 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.
Install the panel and the cover of control
box securely.
• There is risk of fire or electric shock due to
dust , water etc.
For installation, removal or reinstall ,
always contact the dealer or an
Authorized Service Center.
• There is risk of fire, electric shock, explosion,
or injury.
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.
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 store or use or even allow
flammable gas or combustibles near the
product.
• There is risk of fire.
Owner's Manual 3
ENGLISH
To prevent injury to the user or other people and property damage, the following instructions must be followed.
n Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by
the following indications.
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.
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.
Make sure to check that the power cable
plug is not dirty, loose or broken and
then only insert the plug completely.
• Improper or loose connections can cause
heat generation or fire.
• Children may play with them and cause
injury.
• Dirty, loose or broken power plug can
cause electric shock or fire.
In outdoor unit the step-up capacitor
supplies high voltage electricity to the
electrical components. Be sure to
discharge the capacitor completely
before conducting the repair work.
When installing the unit, use the
installation kit provided with the product.
Be sure to use only those parts which
are listed in the svc parts list. Never
attempt to modify the equipment.
• An charged capacitor can cause electrical
shock.
• Otherwise the unit may fall and cause severe
injury.
• The use of inappropriate parts can cause an
electrical shock, excessive heat generation or
fire.
Do not open the front grille of the product
during operation. (Do not touch the
electrostatic filter, if the unit is so equipped.)
If strange sounds, smell or smoke comes
from product.Immediately turn the breaker
off or disconnect the power supply cable.
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.
• There is risk of physical injury, electric shock,
or product failure.
• 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.
Turn the main power off and unplug the
unit when cleaning or repairing the
product.
When the product is not to be used for a
long time, disconnect the power supply
plug or turn off the breaker.
• Oxygen deficiency can occur and hence harm
your health.
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.
• There is risk of electric shock.
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 plug or unplug the power supply plug to turn the unit
ON/OFF .
• There is risk of fire or electric shock.
• There is risk of product damage or failure, or
unintended operation.
Do not place ANYTHING on the power
cable.
• 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.
CAUTION
Two or more people must lift and
transport the product.
• Avoid personal injury.
Keep level even when installing the
product.
• To avoid vibration or noise.
4 Air Conditioner
Do not install the product where it will be
exposed to sea wind (salt spray) directly.
• It may cause corrosion on the product.
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.
Install the drain hose to ensure that the
condensed water is drained away properly.
• A bad connection may cause water leakage.
Always check for gas (refrigerant)
leakage after installation or repair of
product.
• Low refrigerant levels may cause failure of
product.
Safety Precautions
Do not use the product for special purposes,
such as preserving foods, works of art, etc. It
is a consumer air conditioner, not a precision
refrigeration system.
Do not touch the metal parts of the
product when removing the air filter.
• There is risk of personal injury.
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.
Do not tilt the unit when removing or
uninstalling it.
• The condensed water inside can spill .
Dismantling the unit, treatment of the
refrigerant oil and eventual parts should
be done in accordance with local and
national standards.
• 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.
Be cautious when unpacking and
installing the product.
• Sharp edges could cause injury.
Do not mix air or gas other than the
specified refrigerant used in the system .
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.
Always insert the filter securely after
cleaning. Clean the filter every two weeks
or more often if necessary.
• A dirty filter reduces the efficiency.
If the refrigerant gas leaks during the
repair, do not touch the leakaing
refrigerant gas.
• The refrigernat gas can cause frostbite (cold
burn)
If the refrigerant gas leaks during the
installation, ventilate the area immediately.
• If air enters the refrigerant system, an
excessively high pressure results, causing
equipment damage or injury.
• Otherwise it can be harmfull for your health.
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.
Do not recharge or disassemble the
batteries. Do not dispose off batteries in
a fire.
• There is risk of fire or product failure.
• 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.
If you eat the liquid from the batteries,
brush your teeth and see doctor.
Do not use the remote if the batteries
have leaked.
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.
• The chemicals in batteries could cause burns
or other health hazards.
• The chemicals in batteries could cause
burns or other health hazard.
• 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.
Owner's Manual 5
ENGLISH
• There is risk of damage or loss of property.
Do not block the inlet or outlet of air flow.
Product Introduction
Product Introduction
Here is a brief introduction of the indoor and outdoor units.
Indoor Units
Air filters
Air intake vents
Control box
FAN
SPEED
TEMP
OPER
MODE
Wired Remote Controller
Outdoor Unit
Air intake vents
Air outlet
vents
Communication cable
Refrigerant pipe
Drain hose
h The figure can be changed according to model.
6 Air Conditioner
Product Introduction
Simple Wired Remote Controller
ENGLISH
1
2
3
FAN
SPEED
TEMP
4
OPER
MODE
5
Each function will be shown on the display panel for three second or so when the power is applied at first.
1. Operation Display Panel
Displays the operation conditions.
2. Temperature Control Button
Used to set the temperature when the desired temperature is obtained.
3. Fan Speed Button
Used to set desired fan speed.
4. On/Off Function
Operation starts when this button is pressed, and stops when the button is
pressed again.
5. Mode Selection Check Button
Used to select the operation mode.
• Cooling operation
• Heating operation
• Auto-operation
• Dry (Dehumidification) operation
• Fan operation
MODEL : PQRCVCL0QW
Owner's Manual 7
Operating Introductions
Operating Introductions
Standard Operation - Cooling Mode
It cools the room by comfortable and clean wind.
operation will begin if you press
1 Cooling
the
button.
the temperature button and set the
2 Press
desired room temperature lower than the
current room temperature.
TEMP
FAN
SPEED
TEMP
OPER
MODE
A click of the button will increase the
desired temperature by 1°C or 2°F.
A click of the button will decrease the
desired temperature by 1°C or 2°F.
- Setting temp range : 18°C~30°C (64°F~86°F)
- If the desired temperature is set higher than
the current room temperature, the cooling
function will not begin and just the blowing
operation will continue.
you prees the mode button during the
3 Ifoperation,
the operation mode will be
changed in the order of cooling,
dry(dehumidification),heating,auto-operation
and fan operation.‘If the product is a
cooling-only model, the operation mode will
be changed in the order of cooling,
dry(dehumidification), auto-operation and fan
operation.
you press the
4 Ifoperation
will stop.
8 Air Conditioner
button, the cooling
Operating Introductions
Standard Operation - Heating Mode
It supplies warm wind to the indoor
OPER
MODE
button.
the desired room temperature higher
2 Set
than the current room temperature.
TEMP
OPER
MODE
A click of the button will decrease the
desired temperature by 1°C or 2°F.
- Setting temp range : 16°C~30°C (60°F~86°F)
- If the desired temperature is set lower than
the current room temperature, the heating
function will not begin.
FAN
SPEED
TEMP
A click of the button will increase the
desired temperature by 1°C or 2°F.
you prees the mode button during the
3 Ifoperation,
the operation mode will be
changed in the order of cooling,
dry(dehumidification),heating,auto-operation
and fan operation.
you press the
4 Ifoperation
will stop.
button, the cooling
What is the three-minute delay function?
It will take time for the product to blow warm air. The delay is to protect the compressor.
The room will be heated with warm air after three minutes when the compressor begins
operation.
Standard Operation - Auto Operation
In this operation mode, the system is automatically operated by the electronic controls.
- You can set the desired temperature between 18°C(64°F) and 30°C(86°F) for Auto Operation mode.
NOTE
This function properly operates when you use the remote controller matching each model.
Owner's Manual 9
ENGLISH
you want to set the heating operation,
1 Ifpress
the
button. And press the
Operating Introductions
Standard Operation - Dehumidification Mode
It removes humidity while air-cooling weakly.
operating the product by pressing
1 After
the
button, set up the dry
(Dehumidification) by pressing the
button.
OPER
MODE
the dry operation is selected, “dh” will
2 When
be shown on the display window as shown
on the left side.
- The temperature setting can not be
adjusted during operation this mode.
3
FAN
SPEED
TEMP
Press the
button to select airflow rate
[Lo→Med→Hi].
- The initial wind powerfulness of humidity
removal drive is ‘weak’.
FAN
SPEED
OPER
MODE
• 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.
10 Air Conditioner
Operating Introductions
Standard Operation - Fan Mode
It blows the air as it is in the indoor, not the cold wind.
pressing the
OPER
MODE
button.
the dry operation is selected, “Fn” will
2 When
be shown on the display window as shown
on the left side.
- The temperature setting can not be
adjusted during operation this mode.
the
button to select airflow rate
3 Press
[Lo→Med→Hi].
FAN
SPEED
FAN
SPEED
TEMP
When running ventilation, compressor of
AHU doesn’t work.
OPER
MODE
• 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.
Owner's Manual 11
ENGLISH
operating the product by pressing
1 After
the
button, set up the fan operation by
Operating Introductions
Function Setting - Fan Speed Selection
It blows the air as it is in the indoor, not the cold wind.
the proper fan speed which you want
1 Select
by pressing the
button on the remote
controller.
- If you press the
button, the fan speed
will change in the order of [Lo→Med→Hi].
- The initial fan speed is “Hi”.
- If the product is not compatible with the fan
speed Control, it will not function as per
your selection.
FAN
SPEED
Fan Speed Selection in Cooling Operation
FAN
SPEED
TEMP
OPER
MODE
Fan Speed Selection in Heating, Dry, Fan
12 Air Conditioner
Operating Introductions
Function Setting - Room Temperature Check
FAN
SPEED
seconds, the room Temperature will be
indicated for about 5 seconds
Before resuming to the previous display
panel.
In the case of the room temperature display,
the room Temperature can be different in
accordance with the Setting of the remote
controller’s room temperature
Detection selection.
FAN
SPEED
TEMP
OPER
MODE
* As the temperature distribution of the remote controller Installation space is not uniform,
slight difference can be Generated between the actually felt temperature and the room
temperature indication of the remote controller.
Owner's Manual 13
ENGLISH
prssing the
button of the remote
1 When
controller Adjustment section for approx. 3
Operating Introductions
Function setting - Child Lock
It is the function to use preventing children or others from careless using.
the operation, when pressing the
1 During
button and
button for approx. 3 seconds,
FAN
SPEED
the ‘Child Lock’ Function can be used.
- At the time of initial setting of the ‘Child Lock’,
the ‘CL’ Will be indicated approx. 3 seconds
at the temperature Display section before
resuming to the previous mode.
After the setting of the ‘CL’, if another button
is setup, the button can not be recognized as
the ‘CL’ is indicated at the temperature
display section for approx. 3 seconds.
FAN
SPEED
TEMP
OPER
MODE
If the ‘CL’ function is wanted to be used
2 under
the operation standby state, press the
button and
Button for approx.
3 seconds under the standby mode state and
the system will be the ‘CL’ state.
FAN
SPEED
releasing method, when pressing
3 Asthefor theButton
and
button for approx. 3
FAN
SPEED
seconds, the ‘CL’ function can be released.
14 Air Conditioner
Operating Introductions
Different mode drive
one indoor unit operate heating mode while
1 Ifseveral
indoor units are operating cooling
mode, outdoor segment and cooling segment
are blinking like display on the left.
=> It means operation of cooling mode in
outdoor unit.
one indoor unit operate cooling or
2 Ifdehumidification
mode while several indoor
units are operating heating mode, outdoor
segment and cooling segment are blinking.
=> It means operation of heating mode in
outdoor unit.
FAN
SPEED
TEMP
OPER
MODE
pressing
button, indoor unit
3 Ifautomatically
runs at the mode that different
indoor units are running after about 5
seconds and operates.
• If the product is not compatible with the different mode operation, LCD will be displayed
‘CH07’.
• If ‘CH07’ is displayed, please change the mode.
• Different mode operation is not error.
Owner's Manual 15
ENGLISH
Different mode drive is a phenomenon taking place when indoor units' drive mode is different in the
case that a few indoor units are set up at one AHU.
(Different mode drive doesn't show up at cooling exclusive model.)
Maintenance and Service
Maintenance and Service
CAUTION: Before performing any maintenance, turn off the main power to
the system.
Grille, Case, and Remote Controller
o 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.
n 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.
n If dirt is conspicuous, wash with a neutral
detergent in lukewarm water.
n If hot water (40°C or more) is used, it may
be deformed.
Air outlet vent
n 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.
16 Air Conditioner
SI
N NER
SCO
U R IN
C LB
A R GE
3. After washing with water, dry well in
the shade.
n 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 the air conditioner 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 17
ENGLISH
When it 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.
• Have you made a
mistake in timer
operation?
• Has the fuse blown
or has the circuit
breaker been
tripped?
• This sound is
generated by the
expansion/ constriction
of the front panel, etc.
due to changes of
temperature.
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.
18 Air Conditioner
US
CANADA
1. Please call the installing contractor of your product, as warranty service will be provided by them.
2. If you have service issues that have not been addressed by the contractor, please call 1-888-865-3026.
Service call Number # : (888) LG Canada, (888) 542-2623