website http://www.lgservice.com LG LG Ceiling Cassette Air Conditioner OWNER'S MANUAL Prior to installation, this air-conditioning unit must be submitted for approval by the utility service which provides electricity. 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. P/No.
Ceiling Cassette Air Conditioner Owner’s Manual TABLE OF CONTENTS Safety Precautions.........................3 FOR YOUR RECORDS Write the model and serial numbers here: Model # Prior to Operation ..........................8 Serial # You can find them on a label on the side of each unit. Dealer's Name Introduction ....................................9 Electrical Safety ...........................10 Operating Instructions.................11 Maintenance and Service ............
Safety Precautions 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. This symbol indicates the possibility of death or serious injury. This symbol indicates the possibility of injury or damage. ■ Meanings of symbols used in this manual are as shown below. Be sure not to do.
Safety Precautions Do not modify or extend the power cable. • There is risk of fire or electric shock. For installation, always contact the dealer or an Authorized Service Center. • There is risk of fire, electric shock, explosion, or injury. Do not install, remove, or re-install the unit by yourself (customer). • 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.
Safety Precautions 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. Gasolin When flammable gas leaks, turn off the gas and open a window for ventilation before turn the product on.
Safety Precautions 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. ■ Installation Always check for gas (refrigerant) leakage after installation or repair of product. • Low refrigerant levels may cause failure of product.
Safety Precautions 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. x Wa Thinner Do not step on or put anyting on the product. (outdoor units) Always insert the filter securely.
Prior to Operation 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. If the cord/plug is damaged, replace it with only an authorized replacement part. Usage 1. Being exposed to direct airflow for an extended period of time could be hazardous to your health.
Introduction Introduction Symbols used in this Manual This symbol alerts you to the risk of electric shock. This symbol alerts you to hazards that could cause harm to the air conditioner. NOTICE This symbol indicates special notes. Features WARNING: This appliance should be installed in accordance with national wiring regulations. This guide acts as a guide to help to explain product features.
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 wire.
Operating Instructions Operating Instructions Indoor Unit, Outdoor Unit Indoor Unit Heat Pump Model Anti-bacteria Air Intake Signal Receptor Cooling Model Air Outlet Remote Controller Signal Receptor Receives the signals from the remote control. (Signal receiving sound: two short beeps or one long beep.) Signal Receptor Operation Indication Lamps On/Off : Lights up during the system operation. Filter Sign : Lights up after 2400 hours from the time of first operating unit. (Refer to page 28.
Operating Instructions Name and Function of Remote Controller AUTO SWING OPERATION SET TEMP Room Temp 2ndF SUB FUNCTION AUTO Heater Preheat JET Defrost Humidify SLo Filter Out door ZONE 1 2 3 4 HI MED LO 1 Timer FAN SPEED Time Operation unit No Func Program set On Off Set no. Time 01 03 05 07 09 11 13 15 17 19 23 5 14 2 3 4 21 6 7 Timer Cancel 2ndF Program Week Holiday PLASMA Set/Clr Hour Min RESET 12 Ceiling Cassette Air Conditioner 8 9 10 11 12 13 1.
Operating Instructions Wireless Remote Controller (optional) This air-conditioner is equipped with wired remote controller basically. But if you want to be available with wireless remote controller, you pay for it. Signal transmitter 5 6 1 3 4 2 7 11 8 13 14 10 CANCEL ON OFF SET AUTO CLEAN 9 12 15 Flip-up door (opened) 1. START/STOP BUTTON Operation starts when this button is pressed and stops when the button is pressed again. 2. OPERATION MODE SELECTION BUTTON Used to select the operation mode.
Operating Instructions Set the Current Time and a day of the Week 1 Press the ' ' button. Hour Each time the button is pressed, the number is changed from 00 to 23. You can set the number of the current hour. AUTO SWING OPERATION SET TEMP FAN SPEED Room Temp AUTO Heater Preheat JET Defrost Humidify Filter Out door ZONE 1 2 3 4 Hour Time Timer Operation unit On Off Set no. Time 01 2 Press the ' 03 SUB FUNCTION HI MED LO Program set 05 07 09 11 13 15 17 19 21 23 ' button.
Operating Instructions Weekly Program Setting 1 Press the Program button. The remote controller is displayed like below. Then ' Program set ', ' AUTO SWING Program ' and '01' is blinked. OPERATION SET TEMP FAN SPEED Room Temp Time Timer Operation unit SUB FUNCTION AUTO Heater Preheat JET Defrost Humidify Filter Out door ZONE 1 2 3 4 HI MED LO Program set On Off Set no. Time 01 03 AUTO SWING OPERATION 05 07 09 11 13 15 17 19 21 23 Week 2 Press the ' ' button.
Operating Instructions Holiday Setting If Tuesday is a holiday in this week, you may set a holiday. AUTO SWING OPERATION SET TEMP Room Temp Press the Program button. Week Operation unit Program set On Off Set no. Time 01 03 AUTO SWING OPERATION 05 07 09 11 13 SET TEMP Room Temp Press the Week button. Select the Tuesday.
Operating Instructions Operation Mode Cooling Mode Cooling Mode Soft Dry Mode Soft Dry Mode Heating Mode Auto Mode (Cooling Model) Auto Mode (Heat Pump Model) Operation Procedure 1st On/Off Button AUTO SWING OPERATION SET TEMP FAN SPEED Room Temp 2ndF Timer 2nd SUB FUNCTION AUTO Heater Preheat JET Defrost Humidify SLo Filter Out door ZONE 1 2 3 4 HI MED LO Time Operation unit No Func Program set On Off Set no.
Operating Instructions Cooling Operation Mode 1 Press the On/Off Button. 2 Select Cooling Operation. Press the Operation Mode Selection Button. Each time the button is pressed, the operation mode is shifted in the arrow direction. HEAT PUMP MODEL Operation Display AUTO SWING OPERATION SET TEMP 03 07 09 11 SET TEMP 15 17 On Off 21 Set no.
Operating Instructions Soft Dry Operation Mode This mode dehumidifies without overcooling. 1 2 Press the On/Off Button. Select Soft Dry Operation. Press the operation Mode Selection Button. Each time the button is pressed, the operation mode is shifted in the arrow direction.
Operating Instructions Heating Operation Mode (Heat pump model only) 1 2 Press the On/Off Button. Select Heating Operation. Press the Operation Mode Selection Button. Each time the button is pressed, the operation mode is shifted in the arrow direction.
Operating Instructions Auto Operation Mode (Cooling model) 1 Press the On/Off Button. 2 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. COOLING MODEL Operation Display AUTO SWING OPERATION SET TEMP FAN SPEED Room Temp Operation unit 03 AUTO SWING 07 09 11 15 17 19 21 FAN SPEED Operation unit On Off Set no.
Operating Instructions Auto Operation Mode (Heat pump model) 1 Press the On/Off Button. 2 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. HEAT PUMP MODEL Operation Display AUTO SWING OPERATION SET TEMP FAN SPEED Room Temp Time Timer Operation unit On Off Set no.
Operating Instructions FAN Operation Mode • Used to circulate room air without cooling or heating. 1 2 Press the On/Off Button. Press FAN Operation Button. AUTO SWING OPERATION SET TEMP FAN SPEED Room Temp Time Operation unit Timer On Off Set no.
Operating Instructions Comfort Operation with Swirl • It is the function for comfort cooling/heating operation. • The diagonal two louvers are opened the more larger than the other louvers. After one minute, it is opposite.
Operating Instructions Vane Control You can change the open angle to the install situation. 1 Press the On/Off Button. 2 Press the right arrow and auto swing button simultaneously for three seconds. Then the display will be toggled like before. Detach your finger from buttons at the moment that it is displayed "P0" in the operation display.
Operating Instructions Jet Cool Operation Mode 1 Press the On/Off button. The unit will respond with a beep. Select Cooling Operation. AUTO SWING OPERATION SET TEMP FAN SPEED Room Temp Time Timer Operation unit On Off Set no. Time 01 03 SUB FUNCTION HI AUTO Heater Preheat Defrost Humidify MED LO JET Filter Out door ZONE 1 2 3 4 2 Program set 05 07 09 11 13 15 17 19 21 Press the Fan speed button.
Operating Instructions Auto Swing Mode Pro Ca nce 21 l gra m 23 2n dF We ek Ho lida Ho y ur Min Se t/C lr PL AS MA RE SE 1 T Press the On/Off button. (Confirm the unit on operation.) 2 3 Press the Auto Swing button then the horizontal louvers swing up and down automatically. Press again the Auto Swing button to cancel the Auto Swing mode. Child Lock Function This is the function that any children cannot used to the air-conditioner.
Operating Instructions PLASMA Purification Operation (Optional) AUTO SWING OPERATION SET TEMP Room Temp 2ndF Timer FAN SPEED SUB FUNCTION AUTO Heater Preheat JET Defrost Humidify SLo Filter Out door ZONE 1 2 3 4 HI MED LO Time 1 Press the On/Off button. The unit will respond with a beep. 2 Open the door on the remote control. Press the PLASMA air purifying Plasma operation ON/OFF button. Operation unit No Func Program set On Off Set no.
Operating Instructions Forced Operation Operation procedures when the remote control can't be used. Press the tact switch (Forced operation) for 2 seconds. If you want to stop operation, press again the tact switch. In case the power comes on again after power failure on the Forced Operation mode, the operating conditions are automatically set as follows: During Forced Operation, the initial mode continues.
Maintenance and Service Maintenance and Service CAUTION Before performing any maintenance, turn off the main power to the system. Indoor Unit Grille, Case and Remote Control ❐ Turn the system off before cleanining, To clean, wipe with a soft, dry cloth. Do not use bleach or abrasives. NOTICE Anti-biofilter Supply power must be disconnected before cleaning the indoor unit.
Maintenance and Service When the air conditioner is not going to be used for a long time. 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 23.) • This will dry out the internal mechanisms. 2. Turn off the breaker. CAUTION Turn off the circuit breaker when the air conditioner is not going to be used for a long time. Dirt may collect and may cause a fire.
Maintenance and Service Troubleshooting Tips! Save time and money! 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. • Have you made a mistake in timer operation? 16 • Has the fuse blown or has the circuit breaker been tripped? - The room has a peculiar odor.
