OWNER'S MANUAL AIR CONDITIONER Read this owner's manual thoroughly before operating the appliance and keep it handy for reference at all times. TYPE: CEILING CONCEALED DUCT EN English FR Français AR العربية www.lg.com MFL70362704 Rev.00_061518 Copyright © 2018 LG Electronics Inc. All Rights Reserved.
TABLE OF CONTENTS This manual may contain images or content different from the model you purchased. This manual is subject to revision by the manufacturer. SAFETY INSTRUCTIONS.................................................... 3 IMPORTANT SAFETY INSTRUCTIONS.................................................3 OPERATION........................................................................ 11 Notes for Operation...............................................................................
SAFETY INSTRUCTIONS EN The following safety guidelines are intended to prevent unforeseen risks or damage from unsafe or incorrect operation of the appliance. The guidelines are separated into ‘WARNING’ and ‘CAUTION’ as described below. This symbol is displayed to indicate matters and operations that can cause risk. Read the part with this symbol carefully and follow the instructions in order to avoid risk.
EN Installation •This • appliance must be properly grounded to minimize risk of electric shock. •Do • not connect the ground wire to a gas pipe, a lightning rod, or a telephone ground wire. •Install • the panel and the cover of the control box safely. •Contact • an authorized service center when installing or relocating the air conditioner. •Do • not install the appliance on an unstable surface or in a place where there is danger of it falling.
EN •When • installing the unit, use the installation kit provided with the product. •The • appliance shall be installed in accordance with national wiring regulations. •Do • not use a defective or underrated circuit breaker. •Do • not plug multiple socket outlets, an extension power cable or adapter with this appliance. •If • the supply cord is damaged, it must be replaced by the manufacturer or its service agents or similarly qualified person in order to avoid a hazard.
EN Operation •When • the product is soaked (flooded or submerged) in water, contact an Authorized Service Center for repair before using it again. •Use • only the refrigerant specified on the air conditioner label. •Do • not touch the power plug or the appliance controls with wet hands. •Do • not place a heater or other heating appliances near the power cable. •Do • not allow water to run into electric parts. Install the unit away from water sources.
EN •Do • not open the front grille of the product during operation. (Do not touch the electrostatic filter, if the unit is so equipped.) •If • strange sounds, smell or smoke comes from product. Immediately turn the breaker off or disconnect the power supply cable. •Be • sure to ventilate sufficiently when the air conditioner and a heating appliance such as a heater are used simultaneously. •Make • sure that do not climb on or hit the outdoor unit.
EN CAUTION To reduce the risk of minor injury to persons, malfunction, or damage to the product or property when using this product, follow basic precautions, including the following: Installation •Two • or more people must lift and transport the product. •Do • not install the air conditioner in an area where it is directly exposed to sea wind (salt spray). •Install • the drain hose properly for the smooth drainage of water condensation.
EN Operation •Do • not use the product for special purposes, such as preserving foods, works of art, and etc. It is an air conditioner for consumer purposes, not a precision refrigeration system. •Do • not block the inlet or outlet of air flow. •Never • touch the metal parts of the air conditioner when removing the air filter. •Do • not place any object on the air conditioner. •Do • not insert hands or other objects through the air inlet or outlet while the air conditioner is operating.
EN •Do • not expose people, animals, or plants to the cold or hot wind from the air conditioner for extended periods of time. •Do • not drink the water drained from the air conditioner. •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. Maintenance •Use • a soft cloth to clean. Do not use harsh detergents, solvents or splashing water etc.
OPERATION EN Notes for Operation Suggestion for Energy Saving ••Do not over-cool the space. 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. ••Keep doors or windows closed tightly while you are operating the air conditioner. ••Adjust the direction of the air flow vertically or horizontally to circulate indoor air. ••Speed up the fan to cool or warm indoor air quickly, within a short period of time.
EN Wired Remote Control You can operate the air conditioner more conveniently with the remote control. Button Display Screen - Description To turn on/off the air conditioner. To adjust the desired room temperature in cooling, heating or auto changeover mode. To select the cooling mode. To select the heating mode. OPER MODE To select the dehumidification mode. To select the fan mode. To select the auto changeover/ auto operation mode. FAN SPEED SUB FUNC 12 To adjust the fan speed.
EN Button Display Screen Description - To adjust the air flow direction vertically or horizontally. To select the additional operations function. For interlocking operations of air conditioner and ventilator. AIR FLOW VENT - OK/ CLEAR ESC - To schedule an operation. To adjust time. To display the room temperature. To save the settings in the menu. To exit the menu.
EN Using the Mode Function Dehumidification Mode This function allows you to select the desired function. This mode removes excess moisture from a highly humid environment or during the rainy season, in order to prevent mildew from setting in. This mode adjusts the room temperature and the fan speed automatically to maintain the optimal level of humidity. Cooling Mode 1 Turn the appliance on. 2 Press OPER MODE button repeatedly to select the Cooling Mode. •• 3 is displayed on the display screen.
EN Auto Operation This mode automatically sets the fan speed and temperature depending on the room temperature. 1 Turn the appliance on. 2 Press OPER MODE button repeatedly to select the Auto Operation. •• 3 Using the Fan Speed Function Adjusting the Fan Speed ••Press FAN SPEED button repeatedly to adjust the fan speed. is displayed on the display screen. Press or temperature.
EN Using the Air Flow Direction Function Using the Room Temperature Check Function This function adjusts the direction of the air flow vertically (horizontally). ••Press AIR FLOW button repeatedly and select the desired direction. Press button. ••The room temperature will be displayed for 5 seconds. NOTE NOTE ••The menu item might not be partially selected according to product function. ••The feature may be changed according to the type of model.
EN Using the Air Purification Function It supplies clean and fresh air with ion particles and the filter. 1 Press SUB FUNC button repeatedly to select Air Purification. •• 2 is displayed on the display screen. Press OK/CLEAR button to select or cancel the function. •• icon appears or disappears on SUB FUNC display part up to selection. 3 Using Special Functions Child Lock Function Use this option to disable the controls.
EN Filter Sign Clear Function Change Current Time Function This function is to clear the indicator of indoor filter cleaning. 1 Press button repeatedly until the icon flashes. 2 Press 3 Press key to switch to AM/PM setting mode. ••The AM/PM segment will flash. 4 Press or button to set the desired AM/PM value. 5 Press or to switch to Hour setting mode. ••The Hour segment will flash. 6 Press or Hour value. 7 Press or to switch to Minute setting mode. ••The Minute segment will flash.
EN Change Temperature Function Change temperature is the function to setup cooling and heating drive automatically changeable according to the temperature at artificial intelligence drive mode. 1 Press button repeatedly until the icon flashes. 2 Press or button to change. ••Converting temp value: 1 ~ 7 3 Press OK/CLEAR button to complete the setting. 4 Press ESC button to exit the setup mode. NOTE ••Press button to exit or system will automatically release without any input after 60 seconds.
EN Sleep Reservation Function On Reservation Function The product runs in the sleep mode or it stops after a certain period of time while you are sleeping. When the sleep mode is programmed after connecting to a ventilator, and in a certain period of time after sleep mode operation, only sleep mode will be cancelled. It is automatically turned on at the set time. 1 Press button repeatedly until the SLEEP icon flashes. 2 Press or button to adjust the sheduled time.
EN Off Reservation Function Holiday Reservation Function It is automatically turned off at the set time. It automatically stops at reserved day that you set. 1 Press button repeatedly until the OFF icon flashes. 2 1 Press button repeatedly until the HOLIDAY icon flashes. Set the AM/PM, Hour and Minute in the same way as for the Changing Current Time Function. 2 Press or button to switch to Date setting mode. 3 Press OK/CLEAR button to complete the setting.
EN Weekly Reservation Function Weekly Reservation Explanation You can set the daily reservation in weekly unit. 1 Press button repeatedly until the WEEKLY icon flashes. Turning on time 2 3 4 Press or button to select weekly reservation 1 or 2 . ••Weekly timer can be programmed up to 2 schedules per day, and up to 14 reservations per week. Press or button to switch to Date setting mode. ••The Date segment will flash.
EN Simple Wired Remote Controller Button Display Screen - TEMP Description To turn on/off the air conditioner. To adjust the desired room temperature in cooling, heating or auto changeover mode. To select the cooling mode. To select the heating mode. OPER MODE FAN SPEED To select the dehumidification mode. To select the fan mode. To select the auto changeover/ auto operation mode. TEMP OPER MODE FAN SPEED To adjust the fan speed.
EN Using the Mode Function Auto Operation This function allows you to select the desired function. In this operation mode, the system is automatically operated by the electronic controls. ••Setting temp range: Common: 18 °C ~ 30 °C UAE Only: 20 °C ~ 30 °C Cooling Mode 1 Turn the appliance on. 2 Press OPER MODE button repeatedly to select the Cooling Mode. •• 3 is displayed on the display screen. Press or temperature. button to set the desired Heating Mode 1 Turn the appliance on.
EN Fan Mode NOTE This mode only circulates the indoor air without changing the room temperature. 1 Turn the appliance on. 2 Press OPER MODE button repeatedly to select the Fan Mode. •• 3 is displayed on the display screen. Press FAN SPEED button to adjust the fan speed. ••If you press the FAN SPEED button, the fan speed will change in the order of [Lo→Med→Hi→Lo]. ••The initial fan speed is “Hi”. ••The fan speed may not function in the way that you selected if the product is not compatible.
EN Child Lock Function Different Mode Drive The function is to prevent children or others from carelessly using the product. Different mode drive occurs when multiple indoor units connected to a single AHU have different drive modes. (Different mode dirve is not available for Cooling-only models.) 1 2 Turn the appliance on. Press and FAN SPEED button for 3 seconds. •• is displayed on the display screen. NOTE ••When ‘Child Lock’ is initially set, 'CL' will be displayed for approx.
MAINTENANCE EN WARNING ••Before cleaning or performing maintenance, disconnect the power supply and wait until the fan stops. If the air conditioner will not be used for an extended period of time, dry the air conditioner to maintain it in best condition. Clean the product regularly to maintain optimal performance and to prevent possible breakdown. ••Dry the air conditioner in Fan mode for 3 to 4 hours and disconnect the power. There may be internal damage if moisture is left in its components.
EN Clean the Air Filter 1 WARNING Remove the air filter from the indoor unit. ••Hold the tab and pull slightly forward to remove the filter. ••Turn off the power and unplug the power cord before you perform any maintenance; otherwise it may cause electric shock. CAUTION ••Never touch the metal parts of the air conditioner when removing the air filter. ••Never use water that is higher than 40 °C when you clean the filter. It may cause deformation or discoloration.
TROUBLESHOOTING EN Before Calling for Service Please check the following before you contact the service center. If the problem persists, contact your local service center. Problem The air conditioner does not work normally. Possible Causes Burning smell and strange sounds are coming from the unit. Water leaks from the indoor unit even when the humidity level is low. The power cable is damaged or it is generating excessive heat.
EN Problem Possible Causes Air is not circulating properly. The air filter is dirty. The room temperature is too high. The air conditioner does not emit cool air. Cold air is escaping from the room. The desired temperature is higher than the current temperature. There is a heating source nearby. Fan Mode is selected. Outside temperature is too high. The air conditioner stops during operation. The indoor unit is still operating even when the unit has been turned off.
EN Problem The air outlet on the indoor unit is discharging mist. Possible Causes The cooled air from the air conditioner makes mist. Corrective Action ••When the room temperature decreases, this phenomenon will disappear. ••This symptom requires installing a drain hose under the base pan. Contact the installer. the heating operations, Water leaks from the In condensed water drops from outdoor unit. the heat exchanger.
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