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Common questions
Common Questions
20 totalHow often should I clean the air filter on my LG L3UC482FA0?
The air filters should be checked and cleaned once every 2 weeks or more often if necessary. To clean, remove the filter by lifting the front access panel and pulling the filter tab slightly forward, then clean with a vacuum or warm, soapy water. After washing, dry well in the shade before reinstalling. A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage. (Page 21)
Why does my air conditioner not start immediately after I turn it on?
A delay of about 3 minutes before operation begins is normal and is a built-in compressor protection mechanism. This delay is applied to protect the compressor from frequently turning on and off. Simply wait about 3 minutes and operation will begin. (Page 24)
What temperature range can I set for cooling mode?
In Cooling Operation, the temperature can be set within a range of 18°C to 30°C in 1°C increments. You should set the temperature lower than the current room temperature for cooling to activate. (Page 11)
What should I do to prepare my air conditioner for long-term storage or extended periods of non-use?
First, operate the air conditioner in Air Circulation mode for 2 to 3 hours to dry out the internal mechanisms. Then turn off the circuit breaker, disconnect the power cable, and remove the batteries from the remote controller. Clean the air filter and install it back in the indoor unit before storing. (Page 23)
How do I use the Sleep Mode Auto function?
Press the Sleep Mode Auto button to set the time you want the unit to turn off automatically, programmable in one-hour increments by pressing the button 1 to 7 times. In Cooling Mode, the temperature will automatically rise by 1°C over the next 30 minutes and by 2°C in 1 hour for comfortable sleeping, and the unit will operate at low fan speed. To cancel Sleep Mode, press the Sleep Mode Auto button several times until the star symbol disappears from the operation display. (Page 18)
What type of batteries does the remote control require, and are there any safety warnings?
The remote control requires 2 AAA (1.5 volt) batteries, and rechargeable batteries should not be used. Always replace all batteries with new ones of the same type, and do not mix old and new batteries or different types of batteries, as there is a risk of fire or explosion. Do not recharge, disassemble, or dispose of batteries in a fire. (Page 9)
Show 14 more questions
Why does my air conditioner make a cracking sound or sound like water flowing?
How do I adjust the airflow direction on my unit?
What maintenance is required for the outdoor unit?
Why does the air conditioner take about 3 minutes to start operating after I turn it on?
How often should I clean the air filters?
What should I do if water seems to be leaking from the air conditioner?
How do I set the Sleep Mode on the air conditioner?
What is the Jet Cool operation and how do I use it?
What should I do before storing the air conditioner for a long time?
Why am I hearing strange noises from the air conditioner?
What should I do if the remote control display is faint or shows no display?
How do I insert batteries into the remote control?
What should I do if the air conditioner doesn't cool or heat effectively?
What is the Jet Cool function and how do I use it?
Full Manual
25 pages
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Multi Type Air ConditionerOwner'S Manual
Lg
Important
Models: L3Uc482Fa0
L3Uh482Fa0
L4Uc602Fa0
L4Uh602Fa0
Lmnc122Lrl0
Lmnc122Lra0
Lmnc182Ltl0
Lmnc182Lta0
Lmnc242Ltl0
Lmnc242Lta0
Lmnh122Lrl0
Lmnh122Lra0
Lmnh182Ltl0
Lmnh182Lta0
Lmnh242Ltl0
Lmnh242Lta0
2 Multi Type Air Conditioner Multi Type 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 I 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
Safety Precautions Owner's Manual 3
English
Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. I Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications. I Meanings of symbols used in this manual are as shown below.Warning
Caution
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.Warning
I Installation Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit.Safety Precautions 4 Multi Type Air Conditioner I Operation Do not modify or extend the power cable.
Safety Precautions Owner's Manual 5
English
Do not allow water to run into electric parts.Safety Precautions 6 Multi Type Air Conditioner I Installation
Caution
I Operation Always check for gas (refrigerant) leakage after installation or repair of product.Safety Precautions Owner's Manual 7
English
Do not block the inlet or outlet of air flow.Prior to operation 8 Multi Type Air Conditioner Prior to operation
Notice
Operation Instructions Owner's Manual 9
English
Preparation before operation How to Insert the Batteries Remove the battery cover by pulling it according to the arrow direction. Insert new batteries making sure that the (+) and (-) of battery are installed correctly. Reattach the cover by sliding it back into position.Notice
3 2 1 Storage and Tips For Using the Remote ControlOut
Door
Signal receptor Operation indication lampsOperation Instructions 10 Multi Type Air Conditioner Cooling Operation Auto Operation Healthy Dehumidification Operation Heating Operation
On
Off
Cancel
Set
1 3 9 10 5 6 4 2 7 11 8 13 14 12 15 The remote control transmits the signals to the system. Features of the Remote Control Operation Mode About the remote control on the systemStart/Stop Button
Operation starts when this button is pressed and stops when the button is pressed again.Operation Mode Selection Button
Used to select the operation mode.Room Temperature Setting
Buttons
Used to select the room temperature.Indoor Fan Speed Selector
Used to select fan speed in four steps low, medium, high and CHAOS.Jet Cool
Used to start or stop the speed cooling. (Speed cooling operates super high fan speed in cooling mode.)Chaos Swing Button
Used to stop or start louver movement and set the desired up/down airflow direction.On/Off Timer Buttons
Used to set the time of starting and stopping operation. (See page 17)Time Setting Buttons
Used to adjust the time. (See page 18)Timer Set/Cancel Button
Used to set the timer when the desired time is obtained and to cancel the Timer operation. (See page 18)Sleep Mode Auto Button
Used to set Sleep Mode Auto operation. (See page 18)Air Circulation Button
Used to circulate the room air without cooling or heating. (See page 19)Room Temperature Checking
Button
Used to check the room temperature.Plasma(Optional)
Used to start or stop the plasma-purification function. (See page 16)Reset Button
Used prior to resetting time or after replacing batteries. 2nd F Button Used prior to using modes printed in blue at the bottom of buttons. (See page 17) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 (Heat Pump) (Cooling Only)Operation Instructions Owner's Manual 11
English
How to use the Operation Mode Selection button Cooling OperationOn
Cooling Healthy Dehumidification Auto Heating (Heat pump model only) To lower the temperature To raise the temperature Open the door on the remote control. To select Cooling Operation, press the Operation Mode Selection button. Each time the button is pressed, the operation mode is shifted in the direction of the arrow. Close the door on the remote control. Set the temperature lower than the room temperature. The temperature can be set within a range of 18°C-30°C in 1°C increments. Set the fan speed again with the door of the remote control still closed. You can select the fan speed in four steps-low, medium, high, or CHAOS. Each time the button is pressed, the fan speed mode is shifted. Natural wind by the CHAOS logic ❏For more fresh feeling than other fan speed, press the Indoor Fan Speed Selector and set to CHAOS mode. In this mode, the wind blows like natural breeze by automatically changing fan speed according to the CHAOS logic. Press the Start/Stop button. The unit will respond with a beep. 1 2 3 4Operation Instructions 12 Multi Type Air Conditioner
On
Cooling Healthy Dehumidification Auto Heating (Heat pump model only) To lower the temperature To raise the temperature Press the Start/Stop button. The unit will respond with a beep. Open the door on the remote control. To select Auto Operation, press the Operation Mode Selection button. Each time the button is pressed, the operation mode is shifted in the direction of the arrow. The temperature and fan speed are automatically set by the electronic controls based on the actual room temperature. If you want to change the set temperature, close the door on the remote control and press the Room Temperature Setting buttons. The cooler or warmer you feel, the more times (up to two times) you should press the button. The set temperature will then be changed automatically.During Auto Operation:
❏You cannot switch the indoor fan speed. It has already been set by the Fuzzy rule. ❏If the system is not operating as desired, manually switch to another mode. The system will not automatically switch from the cooling mode to the heating mode, or from heating to cooling, it must be done by manually resetting. ❏During Auto Operation, pressing the chaos swing button makes the horizontal louvers swing up and down automatically. If you want to stop auto-swing, press the chaos swing button again. Auto Operation 1 2 3Operation Instructions Owner's Manual 13
English
On
Cooling Healthy Dehumidification Auto Heating (Heat pump model only) Press the Start/Stop button. The unit will respond with a beep. Open the door on the remote control. To select Healthy Dehumidification Operation, press the Operation Mode Selection button. Each time the button is pressed, the operation mode is shifted in the direction of the arrow. Set the fan speed again with the door of the remote control still closed. You can select the fan speed in four steps-low, medium, high, or CHAOS. Each time the button is pressed, the fan speed mode is shifted.During Healthy Dehumidification Operation:
❏If you select the dehumidification mode on the operation selection button, the A/C starts to run the dehumidification function, automatically setting the room temp. and airflow volume to the best condition for dehumidification based on the sensed current room temp. In this case, however, the setting temp. is not displayed in the remote control and you are not able to control the room temp. either. ❏During the healthy dehumidification function, the airflow volume is automatically set according to the optimization algorithm responding to the current room temp. status and makes the room condition healthy and comfortable even in the high humidity season. Healthy Dehumidification OperationNatural Wind By The Chaos Logic
❏For more fresh feeling than other fan speed, press the Indoor Fan Speed Selector and set to CHAOS mode. In this mode, the wind blows like natural breeze by automatically changing fan speed according to the CHAOS logic. 1 2 3Operation Instructions 14 Multi Type Air Conditioner
On
Cooling Healthy Dehumidification Auto Heating (Heat pump model only) To lower the temperature To raise the temperature Press the Start/Stop button. The unit will respond with a beep. Open the door on the remote control. To select Heating Operation, press the Operation Mode Selection button. Each time the button is pressed, the operation mode is shifted in the direction of the arrow. Close the door on the remote control. Set the temperature higher than the room temperature. The temperature can be set within a range of 16°C-30°C in 1°C increments. Heating Operation(Heat pump model only) Set the fan speed again with the door of the remote control still closed. You can select the fan speed in four steps–low, medium, high, or CHAOS. Each time the button is pressed, the fan speed mode is shifted.Natural Wind By The Chaos Logic
❏For more fresh feeling than other fan speed, press the Indoor Fan Speed Selector and set to CHAOS mode. In this mode, the wind blows like natural breeze by automatically changing fan speed according to the CHAOS logic. 1 2 3 4Operation Instructions Owner's Manual 15
English
or or Press the Start/Stop button. The unit will respond with a beep. Press the Jet Cool button to operate the speed cooling mode and the unit will operate in super high fan speed on cooling mode for 30 minutes. To cancel the Jet Cool mode, press the Jet Cool button again or the fan speed button or the room temperature setting button and the unit will operate in high fan speed on cooling mode. Jet Cool Operation ❏During the JET COOL function at any moment, the A/C starts to blow the cool air at extremely high speed for 30 minutes setting the room temp. automatically to 18°C. It is especially used to cool the room temp. in the shortest time in a hot summer. In heat pump mode or neuro fuzzy mode however, the JET COOL function is not available. ❏ In order to return to the normal cooling mode from the JET COOL mode, you just press either the operation mode selection button, airflow volume selection or temp. setting button or the JET COOL button again.Notice
1 2 3Operation Instructions 16 Multi Type Air Conditioner PLASMA Purification Operation(Optional) Press the Start/Stop button. The unit will respond with a beep. Open the door on the remote control. Press the PLASMA air purifying operation ON/OFF button. Operation will start when the button is pressed and stop when the button is pressed again. Set the fan speed again with door of the remote control closed. You can select the fan speed in four steps-low, medium, high or CHAOS. Each time the button is pressed, the fan speed mode is shifted. ❈Air purifying operation (PLASMA) can be with cooling, Heating or any other operations. PLASMA Air Purifying Operation only If you press the only PLASMA button, only PLASMA air purifying operates. Then, fan speed is low. You can select the fan speed in four steps-low, medium, high or
Chaos.
Each time the button ( ) is pressed, the fan speed mode is shifed. 1 2 3Operation Instructions Owner's Manual 17
English
On
Off
Cancel
Set
On
Off
Cancel
Set
Press the Start/Stop button. The unit will respond with a beep. Open the door of the remote control and press the 2nd Function button to operate functions printed in blue at bottom of buttons. (Check the indication of 2nd function on remote control display.) These buttons operate the timer setting as follows: 2nd function goes off in a short time automatically or when the button is pressed again. For more details, refer to functions next page. 2nd F Operation 1 2 3Additional features 18 Multi Type Air Conditioner Additional features Delay OFF Timer Delay ON Timer Delay OFFand ON Timer Delay ONand OFF Timer Sleep Mode Setting the Time Delay Start/Pre-Set Stop Press the Sleep Mode Auto button to set the time you want the unit to turn off automatically. The Timer is programmed in one-hour increments by pressing the Sleep Mode Auto button 1 to 7 times. The sleep mode is available for 1 to 7 times. To alter the time period in steps of 1 hour, press the Sleep Mode Button while aiming at air conditioner. Make sure the Sleep Mode Auto LED lights up. To cancel the Sleep Mode, press the sleep Mode Auto button several times until the star ( ) disappears from the operation display. Note: The Sleep Mode will be operated at low fan speed (cooling) or medium fan speed (heat pump only) for quiet sleeping. IN COOLING MODE: The temperature will automatically rise by 1°C over the next 30 minutes and by 2°C in 1 hour for comfortable sleeping. Time can be set only when you have pressed the Reset button. If you have just replaced the batteries, the Reset button should be pressed to reset the time. Press the Start/Stop button. Press 2nd F button and check if 2nd F icon is on. Press the Time Setting buttons until the desired time is set. Press the Timer SET button. Check the indicator for A.M. and
P.M.
Notice
Make sure the time is set correctly on the remote control display. Press 2nd F button. Press the ON/OFF Timer buttons to turn Timer on or off. Press the Time Setting buttons until the desired time is set. Press the selected on/off setting by pressing the Timer SET button while aiming the remote control at the signal receptor. To cancel the setting the timer. Press the Timer Cancel button while aiming remote control at the signal receptor. (The timer lamp on the air conditioner and the display will go out.) Select one of the following four types of operation.Notice
1 2 3 1 2 2 3 4 5 1 3 4 with the unit runningOn
Off
Cancel
Set
Cancel
Set
Cancel
Set
Additional features Owner's Manual 19
English
Fan speed is on low. Fan speed is on medium. Fan speed is on high. CHAOS Air Vertical Airflow Direction Control Air Circulation Mode 1 2 The up/down airflow (Vertical Airflow) can be adjusted by using the remote control. Press the Start/Stop button to start the unit. Open the door on the remote control. Press Chaos Swing button and the louvers will swing up and down. Press the Chaos Swing button again to set the vertical louver at the desired airflow direction. ❏ If you press the CHAOS swing button, the horizontal airflow direction is changed automatically based on the CHAOS algorithm to distribute the air in the room evenly and at the same time to make the human body feel most comfortable, as if enjoying a natural breeze. ❏ Always use the remote control to adjust the up/down airflow direction. Manually moving the vertical airflow direction louver by hand could damage the air conditioner. ❏ When the unit is shut off, the up/down airflow direction louver will close the air outlet vent of the system. To adjust left/right(Horizontal Airflow) direction Caution : Ensure unit is turned off before adjusting the horizontal airflow direction control. Carefully open vertical louver to allow access to the horizontal airflow direction. Adjust the left/right airflow direction by hand.Notice
Circulates the room air without cooling or heating. Press the Start/Stop button. the unit will respond with a beep. Open the door on the remote control. Press the Air Circulation button. Close the door on the remote control. Now each time that you press the Indoor Fan Speed Selector, the fan speed is shifted from low to CHAOS and back to low again. ❏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.Notice
Additional features 20 Multi Type Air Conditioner Open the front panel upward Power button Forced Operation Test operation Auto restart Operation procedures when the remote control can't be used. The operation will be started if the power button is pressed. If you want to stop operation, re-press the button. High Speed In case the power comes on again after a power failure, Auto Restarting Operation is the function to operate procedures automatically to the previous operating conditions. So there is no need of activating this function by pressing any key or button. In the initial mode, the fan operates at a low speed and the compressor starts 2.5-3 minutes later. As the compressor starts, the fan speed also resumes its previous setting mode. Heat pump Model Cooling Model Room Temp. ≥24°C 21°C ≤Room Temp. < 24°C Room Temp. < 21°C Operating mode Cooling Cooling Healthy Dehumidification Heating Indoor FAN Speed High High High High Setting Temperature
22°C
22°C
23°C
24°C
Helpful information Fan speed and cooling capacity. The cooling capacity indicated in the specification is the value when the fan speed is set to high, and the capacity will be lower at low or medium fan speed. High fan speed is recommended when you wish to cool the room quickly. During the TEST OPERATION, the unit operates in cooling mode at high speed fan, regardless of room temperature and resets in 18 minutes. During test operation, if remote controller signal is received, the unit operates as remote controller sets. If you want to use this operation, open the front panel upward and Press the power button let it be pressed for about 3 seconds. If you want to stop the operation, re-press the button.Care and Maintenance Owner's Manual 21
English
Indoor Unit CAUTION: Before performing any maintenance, turn off the main power to the system. 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.Air Filters
The air filters behind the front grille should be checked and cleaned once every 2 weeks or more often if neccessary. ❏Never use any of the followings:Notice
Vertical louver Horizontal louver Air filters (behind front panel) Air outlet vent Air inlet ventG
a s o li n eP
o w d er 1 2 3 4 1 2 3 4 1 2 3 After removing the air filters, pull slightly forward to remove the NANO PLASMA filter. Remove dust with vacuum cleaner or air. (You should not try to wash with water). Note the cuts of electric discharge lines. Re-install the NANO PLASMA filter to the original position. After removing the air filters, pull slightly forward to remove the TRIPLE DEODORIZING filter. Dry in the sunlight for two hours. Re-install the TRIPLE DEODORIZING filter to the original position.Nano Plasma Filter, Triple
Deodorizing Filter(Optional)
The NANO PLASMA filter behind the air filters should be checked and cleaned once in every 3 months or more often if necessary.Deodorizer
Filter PLASMA Filter Care and Maintenance CAUTION: Don’t touch this PLASMA Filter within 10 seconds after opening the inlet grille, it may cause an electric shock.Care and Maintenance 22 Multi Type Air Conditioner 3 2 Air purifying filter Air filter (Side) (Rear) Air intake vents Air outlet vents Piping Drain hose Control cover Connecting wire Outdoor Unit Replacement of Purifying Filter(Option)
Notice
1 2 3 4Care and Maintenance Owner's Manual 23
English
1 1 2 2 3 When the air conditioner is not going to be used for a long time. Operation Tips Operate the air conditioner on Air circulation mode (Refer to page 19) for 2 to 3 hours.Care and Maintenance 24 Multi Type Air Conditioner Troubleshooting 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. 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 after turning on. Does not cool or heat effectively. The air conditioner operation is noisy. Remote Controller display is faint, or no display at all. Crack sound is heard.