LG Room Air Conditioner OWNER'S MANUAL MODELS: SU/SZ/S3 Chassis website http://www.lgservice.com Prior to installation, this air- conditioning unit must be submitted for approval by the utility service which provides electricity (EN 61000-2, EN 61000-3 Norm). IMPORTANT • Please read this owner's manual carefully and thoroughly before installing and operating your room air conditioner.
Room Air Conditioner Owner’s Manual TABLE OF CONTENTS Safety Precautions...3 Prior to Operation ...9 Introduction ...10 Electrical Safety ...11 Operating Instructions...13 Maintenance and Service ...27 2 Room Air Conditioner 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.
Safety Precautions To prevent the injury of 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. This symbol indicates the possibility of death or serious injury.
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Safety Precautions Be cautious when unpacking and installing the product. • Sharp edges could cause injury. Be especially careful of the case edges and the fins on the condenser and evaporator. Be sure the installation area does not deteriorate with age.
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Use a dedicated outlet for this appliance. • There is risk of fire or electrical shock. Do not allow water to run into electric parts. • It may cause There is risk of fire, failure of the product, or electric shock. When flammable gas leaks, turn off the gas and open a window for ventilation...
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Safety Precautions 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. Unplug the appliance before performing cleaning or maintenance.
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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. I Operation Do not direct airflow at room occupants. (Don't sit in the draft.) •...
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Safety Precautions 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. Use a firm stool or ladder when cleaning or maintaining the air conditioner.
Prior to Operation Preparing for Operation 1. Contact an installation specialist for installation. 2. Plug in the power plug properly. 3. Use a dedicated circuit. 4. Do not use an extension cord. 5. Do not start/stop operation by plugging/unplugging the power cord. 6.
Introduction Introduction Symbols used in this Manual 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. NOTICE Features WARNING: This appliance should be installed in accordance with national wiring regulations.
Electrical Safety Electrical Safety WARNING: This appliance must be properly grounded. To minimize the risk of electric shock, you must alway plug into a grounded oulet. Preferred method Ensure proper ground exists before use WARNING: Do not cut or remove the grounding prong from the power plug.
Electrical Safety Temporary Use of an Adapter We strongly discourage the use of an adapter due to potential safety hazards. For temporary connections, use only a UL-listed 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.
Operating Instructions How to insert the Batteries 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. Use 2 AAA(1.5volt) batteries.
Operating Instructions Remote Control Operations The controls will look like the following. Controls Signal transmitter CANCEL AUTO CLEAN Operation Mode Cooling Operation Auto Operation or Auto Changeover Healthy Dehumidification Operation Heating Operation • Cooling Model( ), Heat Pump Model( 14 Room Air Conditioner 1.
Cooling operation Natural wind by the CHAOS logic ❏ For fresher feeling, press the Indoor fan speed selector 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. Press the Start/Stop button.
Operating Instructions Auto operation (Cooling model only) During Auto Operation ❏ You cannot control 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 mode to cooling mode, it must be done by manually resetting.
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Auto changeover operation(Heat pump model only) During Auto changeover Operation The air conditioner changes the operation mode automatically to keep indoor temperature. When room temperature vary over ±2°C with respect to setting temperature, air conditioner keeps the room temperature within ±2°C with respect to setting temperature by auto changeover mode. Press the Start/Stop button.
Operating Instructions Healthy dehumidification operation During Healthy Dehumidification Operation ❏ If you select the dehumidification mode on the operation selection button, the A/C starts to run the dehumidification function. It automatically sets the room temp. and airflow volume to the best condition for dehumidification, based on the sensed current room temp.
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Heating operation (Heat pump model only) Natural wind by the CHAOS logic ❏ For fresher feeling, press the Indoor Fan Speed Selector 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. Press the Start/Stop button.
Operating Instructions Jet cool operation NOTICE ❏ 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.
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NEO PLASMA purification operation(Optional) NEO PLASMA Air Purifying Operation only Press the Start/Stop button. The unit will respond with a beep. Open the door of the remote controller. Press the PLASMA button. Operation will start when the button is pressed and stop when the button is pressed again.
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Operating Instructions 2nd F operation CANCEL AUTO CLEAN 22 Room Air Conditioner 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 unter buttons.
Additional Features Sleep mode 1. Press the Sleep Mode Auto button to set the time you want the unit to stop automatically. 2. 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.
Operating Instructions Vertical Airflow Direction Control The up/down airflow (Vertical Airflow) can be adjusted by using the remote control. 1. Press the Start/Stop button to start the unit. 2. 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.
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Auto clean (Optional) 1. Whenever you press the Auto Clean button, Auto Clean Function will be AUTO CLEAN reserved and cancelled. 2. Auto Clean function works before and after cooling or dehumidification mode. For details, refer to the below points. 3.
Operating Instructions Forced operation 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. Cooling Model Operating mode Cooling Indoor FAN Speed High Setting Temperature 22°C...
Maintenance and Service Indoor Unit WARNING: 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 1. Open the upside of Front Panel 2.
Maintenance and Service Outdoor Unit The heat exchanger coils and panel vents of the outdoor unit should be checked regularly. If clogged with dirt or soot, the heat exchanger and panel vents may be professionally steam cleaned. Dirty or clogged coils will reduce the NOTICE operating efficiency of the system and cause higher operating costs.
Common Problems and Solutions Before calling for service If you have problems with your air conditioner, read the following information and try to solve the problem. If you cannot find a solution, turn off the air conditioner and contact your dealer. Air conditioner does not operate 1.
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Maintenance and Service Troubleshooting The air conditioner may be operating abnormally when: Problem Possible Causes I The air conditioner is unplugged. I The fuse is blown/circuit breaker is tripped. conditioner I Power failure. does not start I Airflow is restricted. I The thermostat may not be set high enough.