LG Electronics MD12Y3JM

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User Manual

This is the main product document for model MD12Y3JM.

The file format is pdf, 17 pages, you can download this manual here .

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960-912-06
Owner’s Manual
TYPE : Ceiling Concealed Duct - Low Static
ENGLISH
FRANÇAIS
ESPAÑOL
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2 Multi zone
Multi Zone Air Conditioner Owner’s Manual
TABLE OF CONTENTS
FOR YOUR RECORDS
Write the model and serial numbers here:
Model #
Serial #
You can find them on a label on the side of each unit.
Dealer's Name
Date Purchased
Staple your receipt to this page in the event you need
it to prove date of purchase or for warranty issues.
READ THIS MANUAL
Inside you will find many helpful hints on how to use
and maintain your air conditioner properly. Just a little
preventive care on your part can save you a great deal
of time and money over the life of your air conditioner.
You'll find many answers to common problems in the
chart of troubleshooting tips. If you review our chart of
Troubleshooting Tips first, you may not need to call
for service at all.
PRECAUTION
Contact the authorized service technician for
repair or maintenance of this unit.
• Contact the installer for installation of this unit.
The air conditioner is not intended for use by
young children or invalids without supervision.
Young children should be supervised to ensure
that they do not play with the air conditioner.
When the power cord is to be replaced,
replacement work shall be performed by
authorized personnel only using only genuine
replacement parts.
Installation work must be performed in
accordance with the National Electric Code by
qualified and authorized personnel only.
Safety Precautions ............................3
Necessary functions before using...6
Simple Wired Remote Controller ....6
Operating Introductions....................7
Standard Operation - Cooling Mode7
Standard Operation - Heating Mode8
Standard Operation -
Auto Operation................................8
Standard Operation -
Dehumidification Mode ...................9
Standard Operation - Fan Mode ...10
Function Setting - Fan Speed
Selection .......................................11
Function Setting - Room
Temperature Check ......................12
Function setting - Child Lock.........13
Maintenance and Service................14
When the air conditioner is not
going.... .........................................15
Operation Tips! .............................15
Call the service immediately in the
following situations........................16
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Safety Precautions
Owner’s Manual 3
ENGLISH
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 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.
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.
Always ground the product.
• 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.
Always install a dedicated
circuit and breaker.
• Improper wiring or installation
may cause fire or electric shock
Use the correctly rated breaker
or fuse.
• There is risk of fire or electric
shock.
Do not modify or extend the
power cable.
• There is risk of fire or electric
shock.
Do not install, remove, or re-
install the unit by yourself
(customer).
• There is risk of fire, electric shock,
explosion, or injury.
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.
For installation, 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.
• It may cause injury, accident, or
damage to the product.
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.
Safety Precautions
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Safety Precautions
4 Multi zone
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.
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
If strange sounds, or small or
smoke comes from product.
Turn the breaker off or
disconnect the power supply
cable.
• There is risk of electric shock or
fire.
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.
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.
Be cautious that water could
not enter the product.
• There is risk of fire, electric shock,
or product damage.
Ventilate the product from time to time when
operating it together with a stove, etc.
• There is risk of fire or electric shock.
Turn the main power off when cleaning or
maintaining the product.
• There is risk of electric shock.
Operation
Do not plug or unplug the
power supply plug during
operation.
• There is risk of fire or electric
shock.
Do not touch(operate) the
product with wet hands.
• There is risk of fire or electrical
shock.
Do not place a heater or other
appliances near the power
cable.
• There is risk of fire and electric
shock.
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.
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.
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.
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Safety Precautions
Owner’s Manual 5
ENGLISH
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.
Operation
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
.
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.
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, 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.
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.
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.
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.
Do not drink the water drained
from the product.
• It is not sanitary and could cause
serious health issues.
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.
Use a firm stool or ladder when
cleaning or maintaining the
product.
• Be careful and avoid 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
Do not recharge or
disassemble the batteries.
Do not dispose of batteries in a
fire.
• They may burn or explode.
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Necessary functions before using
6 Multi zone
Simple Wired Remote Controller
TEMP
FAN
SPEED
OPER
MODE
3
4
5
1
2
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
Necessary functions before using
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Operating Introductions
Owner’s Manual 7
ENGLISH
Standard Operation - Cooling Mode
TEMP
FAN
SPEED
OPER
MODE
Cooling operation will begin if you press
the button.
1
If you press the button, the cooling
operation will stop.
4
If you prees the mode button during the
operation, 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.
3
Press the temperature button and set the
desired room temperature lower than the
current room temperature.
-
Setting temp range : 64°F~86°F(18°C~30°C)
- 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.
2
TEMP
A click of the button will increase the
desired temperature by 2°F or 1°C.
A click of the button will decrease the
desired temperature by 2°F or 1°C.
Operating Introductions
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Operating Introductions
8 Multi zone
TEMP
FAN
SPEED
OPER
MODE
If you want to set the heating operation,
press the button. And press the
button.
1
If you press the button, the cooling
operation will stop.
4
If you prees the mode button during the
operation, the operation mode will be
changed in the order of cooling,
dry(dehumidification),heating,auto-operation
and fan operation.
3
Set the desired room temperature higher
than the current room temperature.
-
Setting temp range : 60°F~86°F(16°C~30°C)
- If the desired temperature is set lower than
the current room temperature, the heating
function will not begin.
2
TEMP
A click of the button will increase the
desired temperature by 2°F or 1°C.
A click of the button will decrease the
desired temperature by 2°F or 1°C.
OPER
MODE
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.
This function properly operates when you use the remote controller matching each model.
NOTICE
Standard Operation - Heating Mode
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Operating Introductions
Owner’s Manual 9
ENGLISH
Standard Operation - Dehumidification Mode
TEMP
FAN
SPEED
OPER
MODE
After operating the product by pressing
the button, set up the dry
(Dehumidification) by pressing the
button.
1
When the dry operation is selected, “dh” will
be shown on the display window as shown
on the left side.
- The temperature setting can not be
adjusted during operation this mode.
2
Press the button to select airflow rate
[LoMedHi].
- The initial wind powerfulness of humidity
removal drive is ‘weak’.
3
OPER
MODE
FAN
SPEED
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.
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10 Multi zone
Operating Introductions
TEMP
FAN
SPEED
OPER
MODE
After operating the product by pressing
the button, set up the fan operation by
pressing the button.
1
When the dry operation is selected, “Fn” will
be shown on the display window as shown
on the left side.
- The temperature setting can not be
adjusted during operation this mode.
2
Press the button to select airflow rate
[LoMedHi].
When running ventilation, compressor of
AHU doesn’t work.
3
OPER
MODE
FAN
SPEED
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.
Standard Operation - Fan Mode
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Owner’s Manual 11
Operating Introductions
ENGLISH
TEMP
FAN
SPEED
OPER
MODE
Select the proper fan speed which you want
by pressing the button on the remote
controller.
- If you press the button, the fan speed
will change in the order of [LoMedHi].
- 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.
1
FAN
SPEED
Fan Speed Selection in Cooling Operation
Fan Speed Selection in Heating, Dry, Fan
Function Setting - Fan Speed Selection
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12 Multi zone
Operating Introductions
TEMP
FAN
SPEED
OPER
MODE
When pressing the button of the remote
controller adjustment section for approx. 3
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.
1
FAN
SPEED
* 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.
Function Setting - Room Temperature Check
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Owner’s Manual 13
ENGLISH
Operating Introductions
It is the function to use preventing children or others from careless using.
Function setting - Child Lock
TEMP
FAN
SPEED
OPER
MODE
During the operation, when pressing the
button and button for approx. 3 seconds,
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.
1
If the ‘CL’ function is wanted to be used
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.
2
As for the releasing method, when pressing
the Button and button for approx. 3
seconds, the ‘CL’ function can be released.
3
FAN
SPEED
FAN
SPEED
FAN
SPEED
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Maintenance and Service
14 Multi zone
B
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n
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S
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R
I
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C
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B
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G
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S
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Air-Filter
Grille, Case, and Remote Control
Turn the system off before cleaning. To clean, wipe with
a soft, dry cloth. Do not use bleach or abrasives.
Supply power must be disconnected before
cleaning the indoor unit.
NOTICE
Never use any of the followings:
Water hotter than 40
°C(
104°F)
Could cause deformation and/or
discoloration.
Volatile substances
Could damage the surfaces of the air
conditioner.
1. Clean the filter with a vacuum or warm, soapy
water.
• If very dirty, wash with a solution of
detergent in lukewarm water.
• If hot water 50
°C
(122°F) or more is
used, filter may be deformed.
2. After washing with water, dry well in the
shade.
3. Re-install the air filter.
Air Filter
The air filters behind Indoor unit
(the suction side) should be checked and cleaned once
every 2 weeks or more often if necessary.
CAUTION: Before performing any maintenance, turn off the main power to
the system.
Maintenance and Service
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Maintenance and Service
Owner’s Manual 15
ENGLISH
Operation Tips!
When the air conditioner is not going....
Do not overcool the room.
This is not good for the health and
wastes electricity.
Keep blinds or curtains
closed.
Do not let direct sunshine enter the
room when the air conditioner is in
operation.
Keep the room temperature
uniform.
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.
Avoid opening doors and windows
as much as possible to keep the
cool air in the room.
Clean the air filter regularly.
Blockages in the air filter reduce the
airflow and lower cooling and
dehumidifying effects. Clean at
least once every two weeks.
Ventilate the room
occasionally.
Since windows are kept closed, it is
a good idea to open them and
ventilate the room now and then.
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 breaker when the air conditioner is not going to be
used for a long time.
Dirt may collect and may cause a fire.
3. Remove the batteries from the Remote Controller.
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 34 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.
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Maintenance and Service
16 Multi zone
Call the service immediately in the following situations
1. Anything abnormal such as burning smell, loud noise etc. happen. Stop the unit and turn the breaker off.
Never try to repair by yourself or restart the system in such cases.
2. Main power cord is too hot or damaged.
3. Error code is generated by self diagnosis.
4. Water leaks from indoor unit even if the humidity is low.
5. Any switch, breaker (safety, earth) or fuse fails to work properly
User must carry routine checkup & cleaning to avoid unit’s poor performance.
In case of special situation, the job must be carried out by service person only.
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.
Does not cool or heat effectively.
The air conditioner operation is
noisy.
Crack sound is heard.
Filter sign lamp (LED) is ON.
Remote control display is faint, or
no display at all.
• Have you made a mistake in timer operation?
• Has the fuse blown or has the circuit breaker been tripped?
• Check that this is not a damp smell exuded by the walls, carpet, furniture or
cloth items in the room.
• Condensation occurs when the airflow from the air conditioner cools the warm
room air.
• This is the protector of the mechanism.
• Wait about three minutes and operation will begin.
• Is the air filter dirty? See air filter cleaning instructions.
• The room may have been very hot when the room air conditioner was first
turned on. Allow time for it to cool down.
• Has the setting temperature been set incorrectly?
• Are the indoor unit's air inlet or outlet vents obstructed?
• For a noise that sounds like water flowing.
-This is the sound of freon flowing inside the air conditioner unit.
• For a noise that sounds like the compressed air releasing into atmosphere.
-This is the sound of the dehumidifying water being processed inside the air
conditioning unit.
• This sound is generated by the expansion/contraction of the inlet grille, etc.
due to changes of temperature.
• Cleaning the filter, press the Timer button and button of wired remote
controller at the same time for 3 sec.
• Has the circuit breaker been tripped?
• Are the batteries inserted in the opposite (+) and
(-) directions? 
Case Explanation
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P/NO : 3828A23010P

Specifications

LG Electronics MD12Y3JM Questions and Answers

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