ENGLISH OWNER’S MANUAL AIR CONDITIONER Please read this manual carefully before operating your set and retain it for future reference. TYPE : CEILING CONCEALED DUCT MFL68221107 P/NO.: MFL68221107 www.lg.
TIPS FOR SAVING ENERGY ENGLISH TIPS FOR SAVING ENERGY Here are some tips that will help you minimize the power consumption when you use the air conditioner. You can use your air conditioner more efficiently by referring to the instructions below: • Do not cool excessively indoors. This may be harmful for your health and may consume more electricity. • Block sunlight with blinds or curtains while you are operating the air conditioner.
SAFETY PRECAUTIONS 3 READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE. Always comply with the following precautions to avoid dangerous situations and ensure peak performance of your product ! WARNING It can result in serious injury or death when the directions are ignored ! CAUTION It can result in minor injury or product damage when the directions are ignored ! WARNING • Use two or more people to lift and transport the product. Avoid personal injury.
SAFETY PRECAUTIONS ENGLISH • 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. Operation • 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. • Do not plug or unplug the power supply plug during operation.
SAFETY PRECAUTIONS 5 • Always check for gas (refrigerant) pressure 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. • Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods.
TABLE OF CONTENTS ENGLISH TABLE OF CONTENTS 2 TIPS FOR SAVING ENERGY 3 IMPORTANT SAFETY INSTRUCTIONS 7 BEFORE USE 7 7 7 7 Preparing for operation Usage Cleaning and maintenance Service 8 PRODUCT INTRODUCTION 8 9 Name and function of parts Simple Wired Remote Controller 10 OWNER'S INSTRUCTION 10 11 12 13 14 15 16 17 18 Standard Operation - Cooling Mode Standard Operation - Heating Mode Standard Operation - Auto Operation Mode Standard Operation - Dehumidification Mode Standard Operation - F
PRODUCT INTRODUCTION 7 Preparing for operation • Contact an installation specialist for installation. • Use a dedicated circuit. Usage • Being exposed to direct airflow for an extended period of time could be hazardous to your health. Do not expose occupants, pets, or plants to direct airflow for extended periods of time. • Due to the possibility of oxygen deficiency, ventilate the room when used together with stoves or other heating devices.
PRODUCT INTRODUCTION ENGLISH PRODUCT INTRODUCTION Name and function of parts 1 4 Air intake vents 6 7 2 5 Air outlet vents Remote Controller FAN SPEED TEMP OPER MODE 3 1: Indoor unit 2: Outdoor unit 3: Remote controller 4: Inlet air 5: Discharge air 6: Refrigerant piping, connection electric wire 7: Drain pipe 8: Ground wire wire to ground outdoor unit to prevent electrical shocks.
PRODUCT INTRODUCTION 9 1 2 3 4 5 Operation Display Panel Temperature Control Button Fan Speed Button On/Off Button Operation Mode select Button 1 * Each function will be shown on the display panel for three seconds or so when the power is applied at first.
OWNER'S INSTRUCTION ENGLISH OWNER'S INSTRUCTION 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 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.
OWNER'S INSTRUCTION 11 ENGLISH Standard Operation - Heating Mode It supplies warm wind to the indoor you want to set the heating operation, 1 Ifpress the button. And press the OPER MODE button. the desired room temperature higher 2 Set than the current room temperature. TEMP 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.
OWNER'S INSTRUCTION ENGLISH Standard Operation - Auto Operation Mode operating the product by pressing 1 After the button, set up the auto operation by pressing the OPER MODE button.
OWNER'S INSTRUCTION 13 ENGLISH Standard Operation - Dehumidification Mode It removes humidity while air-cooling weakly. 1 After operating the product by pressing the button, set up the dry (Dehumidification) by pressing the button. OPER MODE the dry operation is selected, “dh” 2 When will 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 ].
OWNER'S INSTRUCTION ENGLISH Standard Operation - Fan Mode It blows the air as it is in the indoor, not the cold wind. operating the product by pressing 1 After the button, set up the fan operation by pressing the OPER MODE button. the dry operation is selected, “Fn” 2 When will 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 ].
OWNER'S INSTRUCTION 15 ENGLISH 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 button on the remote by pressing the controller. button, the fan speed - If you press the 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.
OWNER'S INSTRUCTION ENGLISH Function Setting - Room Temperature Check pressing the button of the remote 1 When controller Adjustment section for approx. 3 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.
OWNER'S INSTRUCTION 17 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.
OWNER'S INSTRUCTION ENGLISH Function setting - Celsius / Fahrenheit Switching This function is used for switching the display between Celsius and Fahrenheit. (Optimized only for U.S.A) 1 OPER MODE When pressing the button and button simultaneously for more than 3 seconds, the system will be entered into the installer setting mode. - After entering into the installer setting mode, select the ceiling height setting code value by pressing the oper-mode button.
MAINTENANCE AND SERVICE 19 ! 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. ! NOTE Supply power must be disconnected before cleaning the indoor unit. Air outlet vent Air filters 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.
CARE AND MAINTENANCE ENGLISH When the air conditioner is not going.... When air conditioner is not going to be used for a long time. - 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. Helpful information The air filters and your electiric bill.
CARE AND MAINTENANCE 21 Check the following points before requesting repairs or service.... If the malfunction persist, please contact your dealer. The air conditioner does not operate. - Have you made a mistake in timer operation? - Has the fuse blown or has the circuit breaker been tripped? The room has a peculiar odor. - Check that this is not a damp smell exuded by the walls, carpet, furniture or cloth items in the room. It seems that condensation is leaking from the air conditioner.
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