ROOM AIR CONDITIONER Please read this manual carefully before operating your set and retain it for future reference. TYPE : WALL MOUNTED MFL39754877 Rev.02_012517 www.lg.com 2 TABLE OF CONTENTS 13 ADVANCED FUNCTIONS 3 3 IMPORTANT SAFETY INSTRUCTION 7 BEFORE – Prior to operation..............................................7 – Components .....................................................7 – Electrical Safety.................................................8 – Using the remote control ..............................8 Inserting Batteries .......................................8 Wireless Remote Control ..........................9 10 BASIC FUNCTIONS Cooling your room ..............................................10 Heating your room ..............................................10 Removing humidity..............................................10 Airing your room...................................................11 Adjusting the fan speed.....................................11 Using air flow direction function.......................11 Setting the timer .................................................11 – Setting the current time.................................11 – Turning ON the air conditioner automatically at a set time.............................12 – Turning OFF the air conditioner automatically at a set time.............................12 – Canceling the timer setting ..........................12 - Setting sleep mode .........................................12 CAUTION • Contact the authorized service technician for repair or maintenance of this unit. • Please install your airconditioner by company authorized service franchisee / authorized service and sales dealer. • 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. • When the power cord is to be replaced, replacement work shall be performed by authorized personnel only, using only genuine replacement parts. Changing room temperature quickly..............13 – H’COOL Mode .................................................13 Indoor air purification..........................................13 – Auto Clean operation......................................13 Energy saving cooling mode.............................13 Auto operation (Cooling-only models)...........14 Display screen brightness..................................14 Auto changeover operation (Cooling & Heating model).....................................................14 Operating the air conditioner without the remote control......................................................15 Restarting the air conditioner automatically ..15 16 MAINTENANCE Cleaning the air filter...........................................17 Cleaning the anti-allergy filter (Optional).......17 Cleaning the plasma filter (Optional)..............17 Cleaning the 3M filter (Optional) ....................18 Outdoor Unit ........................................................18 19 TROUBLESHOOTING – Self-diagnosis function...................................19 – Before requesting service...............................19 TIPS FOR SAVING ENERGY Avoid excessive cooling. reduce the cooling / dehumidiﬁcation functions. (Refer page No. 17 and 18 details of owner's manual). Appliances shall be installed in accordance with national wiring regulations. If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard. When the power cord is to be replaced, replacement work shall be performed by authorized personnel only using only genuine replacement parts. 3 4 SAFETY INSTRUCTIONS Do not install the air conditioner on an unstable surface or where there may be a danger of unit falling. It may result in death, serious injury or product failure. Be cautious when you unpack or install the air conditioner. Failure to do so may result in serious injury or product failure. Operation Be sure to use only those parts which are listed in the service parts list. Never attempt to modify the equipment. It may result in death, serious injury, effect on product performance or product failure. Only use components that are approved by the manufacturer and do not repair or modify them. Failure to do so may result in electric shock, effect on product performance or product failure. SAFETY INSTRUCTIONS 5 Only use the refrigerant specified on the air conditioner label. Failure to do so may result in explosion or fire. enter Do not let the air conditioner run for a long time when the humidity is very high or when a door or window has been left open or in small place without ventilation. Failure to do so may result in product failure, explosion or fire. ON OFF When there is a gas leak, ventilate sufﬁciently before using the air conditioner again. Failure to do so may result in explosion or ﬁre. There is risk of damage or loss of property. Do not block the inlet or outlet of air ﬂow. It may effect product performance. or serious injury. or health complications. For inner cleaning, contact an Authorized Service Center or a dealer. Do not use harsh detergent that causes corrosion or damage on the unit. Harsh detergent may also cause failure of product fire, or electric shock. Use non-inflammable gas (nitrogen) to check for leak and to purge air. Using compressed air or flammable gas may cause fire or explosion. Stop operating and close the window in a storm or hurricane. If possible remove the product from the window before hurricane arrives. Unplug the power plug when the air conditioner is not used for an extended period of time. Failure to do so may result in product failure. This appliances is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. It may effect product performance. 6 SAFETY INSTRUCTIONS water leakage or product failure. not cause neighbours. to neighbours. . Keep level even when installing the product. Operation effect product performance. remote Do not recharge or disassemble the batteries. It may result in explosion, fire or serious injury. may effect product performance or electric shock or serious injury. BEFORE USE 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 breaker. 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 a long time may be hazardous to your health. Do not expose occupants, pets, or plants to direct airflow for a long time. 2. Due to the possibility of oxygen deficiency, ventilate the room when using the appliance together with stoves or other heating devices. 3. Do not use this air conditioner for nonspecified special purpose (e.g. preserving precision devices, food, pets, plants, or art objects). Such use may damage your properties. Cleaning and Maintenance 1. Do not touch the metal parts of the unit when removing the filter. Injury can occur. 2. Do not use water to clean inside the air conditioner. Exposure to water can destroy the insulation, lead to electric shock or effect product performance. 3. When cleaning the unit, first make sure that the power and breaker are turned off. The fan rotates at a very high speed during operation. There is a possibility of injury if the unit’s power is triggered while cleaning inner parts of the unit. Service For repair and maintenance, contact your authorized service dealer. Components 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. 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. Indoor unit Air Inlet Air Filter Outdoor unit Panel (Side) (Rear) Air Inlet Connecting Wires Piping Air Outlet Air deflector Base Plate Drain Hose 7 8 BEFORE USE Electrical Safety WARNING • This appliance must be properly grounded. To minimize the risk of electric shock, you must always plug into a grounded outlet. • Do not cut or remove the grounding. • Attaching the adapter ground terminal to the wall receptacle cover screw does not ground the appliance unless the cover screw is metal and not insulated, and the wall receptacle is grounded through the house wiring. • If you have any doubt whether the air conditioner is properly grounded, check the wall receptacle and circuit checked by a qualified electrician. Using the remote control If the display screen of the remote control begins to fade, replace the batteries. Insert AAA (1.5 V) batteries before using the remote control. This feature can be changed according to type of model. Insert the new batteries and make sure the + and - terminals of the batteries are installed correctly. BEFORE USE 9 Using the remote control You can operate the air conditioner more conveniently with the remote control. Wireless remote control Signal Transmitter Air Circulation button Used to circulate the room air without cooling or heating. Sets the sleep mode auto operation. To adjust the desired room temperature in cooling, heating or auto changeover mode. Display Screen FAN ENERGY SAVING ON/OFF button : Turns the air conditioner ON/OFF - M’SOON Control Panel fan speed. H’COOL - M’SOON Use to remove excess moisture. LIGHT H’COOL button : Cools down the indoor temperature within a short period of time H’COOL air flow direction vertically & horizontally. Temperature Display Button: AM ON OFF To turn on/off the air conditioner automatically at desired time. A/CLEAN ENERGY SAVING LIGHT Turn indoor unit display ON or OFF. Sets or cancels functions. Also set the current time if held for 3 seconds. remote controller settings. 10 BASIC FUNCTIONS BASIC FUNCTIONS Cooling your room (Cooling operation) 1 Press to turn on the power. 2 Press repeatedly to select the cooling operation. - is displayed on the display screen. Removing humidity (Cooling Mode Only) (Monsoon operation) This mode removes excess moisture from environment with high humidity or in the rainy season, in order to prevent mold from setting in. This mode adjusts the room temperature and the fan speed automatically to maintain the optimal level of humidity. 1 Press 2 Press 3 Press or to turn on the power. M’SOON to select the monsoon operation. - is displayed on the display screen. ! NOTE to set the desired temperature. - The temperature range is 18 °C 30 °C Heating your room (Heating operation) 1 Press to turn on the power. 2 Press repeatedly to select the heating operation. is displayed on the display screen. - 3 Press or to set the desired temperature. - The temperature range is 16 °C 30 °C ! NOTE Cooling-only models do not support this function. • In this mode you cannot adjust the room temperature, as it is adjusted automatically. Also, the room temperature is not displayed on the display screen. • In this mode indoor unit fan and outdoor unit will be OFF intermittently. • To Exit from Monsoon mode press key or H’COOL key or key BASIC FUNCTIONS Airing your room (Air Circulation operation) Using the Air Flow Direction Function This mode only circulates the indoor air without changing the room temperature. This function adjusts the direction of the air flow vertically (horizontally). to turn on the power. 1 Press 2 Fan button : Press FAN turn on the air circulation operation. repeatedly to turn : Press on the air circulation operation. is displayed on the display screen. - Press 11 button repeatedly and select desired direction - Select to adjust the direction of the air flow automatically. ! NOTE • Adjusting the air flow direction horizontally may not be supported, depending on the model. • Adjusting the air deflector arbitrarily may cause product failure. 3 Press ! to adjust the fan speed. NOTE • This function may not be supported, depending on the model. Adjusting the fan speed 1 Press repeatedly to adjust the fan speed. - Select if you want natural air. The fan speed adjusts automatically. Remark • If you restart the air conditioner, it starts to operate with the previously set direction of air flow, so the air deflector may not match the icon displayed on the remote control. When this occurs, press or to adjust the direction of the air flow again. • This function may operate differently from the remote control display. Setting the timer You can use the timer function to save energy and to use the air conditioner more efficiently. Speed High Setting the current time 1 Press Medium Low Natural Wind Natural Wind (CHAOS Logic) For fresher feeling, press the INDOOR FAN SPEED SELECTION BUTTON and set to Natural Wind mode ( ). In this mode, the wind blows like a natural breeze by automatically changing fan speed. and hold it for longer than 3 seconds. - The AM/PM icon flickers at the bottom of the display screen. 12 BASIC FUNCTIONS 2 Press or LIGHT 3 Press to select desired time. Canceling the timer setting A/CLEAN to finish. Turning ON the air conditioner automatically at a set time 1 Press - The icon below flickers at the bottom of the display screen. 1 Press or to select the timer setting to cancel. 2 Press - To cancel all timer settings, press (The timer lamp on the air conditioner and the display will go off.) Setting sleep mode Use the sleep mode to turn OFF the air conditioner automatically when you go to sleep. 1 Press 2 Press or LIGHT to select desired time. A/CLEAN 3 Press to finish. 4 When setting the timer, current time and ON icon are displayed on the display screen indicating that the ON TIMER is set. to turn on the power. 2 Press 3 Press or LIGHT to select the hour A/CLEAN (up to 7 hours). 4 Press to finish. - is displayed on the display screen in sleep mode. Turning OFF the air conditioner automatically at a set time 1 Press - The icon below flickers at the bottom of the display screen. 2 Press or LIGHT to select desired time. A/CLEAN 3 Press to finish. 4 When setting the timer, current time and OFF icon are displayed on the display screen indicating that the OFF TIMER is set. The sleep mode will operate indoor fan at super low speed in cooling mode and at low speed in heating mode for pleasant sleep In cooling mode or Monsoon mode: The setting temperature will rise automatically two times by 1 °C over next consecutive 30 minutes (Maximum 2 °C) for a comfortable sleep. This will be the final setting temperature as long as sleep mode is functioning. After completion of set time unit will switch OFF automatically. ADVANCED FUNCTIONS 13 ADVANCED FUNCTIONS The air conditioner offers some additional advanced functions. Changing room temperature quickly H’COOL Mode This mode allows you to cool indoor air quickly Press - If you turn off the power, the fan operates for 30 minutes and cleans the inside of the indoor unit. ! NOTE Some buttons cannot be used while the auto cleaning function is in operation. During Auto Clean function, “ be displayed on the unit. ” will Energy saving cooling mode H’COOL This mode minimizes power consumption during cooling and increases the set temperature to the optimal level for a more comfortable environment. The temperature automatically sets at 22 °C if ambient temperature is below 22 °C. The temperature maintains if ambient temperature is above 22 °C -In H’COOL mode, 30 minutes strong focused air blows out for faster cooling. Internal Set temperature will be 18 °C. 1 Press to turn the power on. 2 Press repeatedly to select the cooling operation. 3 Press During & after H'COOL mode swing function will be ON by default. To OFF swing function Press respective swing key. This mode does not have auto restart feature. Indoor air purification Auto Clean operation In the cooling and monsoon operations, moisture is generated inside the indoor unit. Use the auto cleaning function to remove such moisture. 1 Press to turn on the power. 2 Press A/CLEAN - is displayed on the display screen. During Auto clean selection Auto clean operation mode - ! ENERGY SAVING is displayed on the display screen. NOTE In Energy Saving Cooling Mode, temperature on the display of the remote controller and air conditioner can be different. • This function may not be supported, depending on the model. • This mode does not have auto restart feature. 14 ADVANCED FUNCTIONS Auto operation Auto Changeover operation (Artificial intelligence) (Cooling & Heating model) Cooling-only models In this mode, the fan speed and the temperature adjust automatically, based on the room temperature. 1 Press to turn on the power. 2 Press - AI repeatedly to select auto operation. is displayed on the display screen. 3 Press or to select the desired oper- This operation is basically heating or cooling function of the air conditioner. But during this operation the controller change the operation mode automatically to keep the temperature within ±2 °C with respect to the setting temperature. 1 Press to turn on the power. 2 Press - ation code if the temperature is higher or lower than the desired temperature. AI ! Code 2 1 0 Description Cool Cool slightly Maintain room temperature -1 Heat slightly -2 Heat NOTE • In this mode, you cannot adjust the fan speed, but you can set the air deflector to rotate automatically. • This function may not be supported, depending on the model. Display screen brightness You can adjust the brightness of the indoor unit display screen. 1. Press . LIGHT Turn on/off the Display screen. repeatedly to select Auto Changeover operation AI is displayed on the display screen. AI 3 Press or to set the desired temperature. - The temperature range is 18 °C - 30 °C 4 Press ! repeatedly to select the fan speed. NOTE • This function may not be supported, depending on the model. ADVANCED FUNCTIONS 15 (Forced Operation) ON/OFF restart twice 4 times. ON/OFF button Open the front panel upward ON/OFF button Open the front panel upward * The feature can be changed according a type of model. Cooling Model Operating mode Heat pump Model* Room Temp. 24 °C 21 °C Room Temp. < 24 °C Indoor FAN Speed Cooling High Cooling High Healthy Dehumidification High Setting Temperature 22 °C 22 °C 23 °C Room Temp. < 21 °C Heating If you want to stop the unit, re-press the power button. ! NOTE * This feature can be changed according to type of model. High 24 °C - To re-enable the function, press the On/Off button and hold it for 6 seconds. The unit will beep twice and the lamp will blink 4 times. 16 MAINTENANCE If the air conditioner will not be used for an extended period of time, dry the air conditioner to maintain it in best condition. 1 Dry the air conditioner in Fan mode for 2 to 3 hours and disconnect the power plug. There may be internal damage if moisture is left in components. 2 Before using the air conditioner again, dry the inner components of the air conditioner in Fan mode for 2 to 3 hours. This will help to remove odor which is generated from moisture * 3M filter* * The feature can be changed according to type of model. See “Cleaning the air filter.” See “Cleaning the anti-allergy filter.” 3 M filter* 1 Regularly Indoor Unit Outdoor Unit 3M filter. Every 4 Months Clean the Indoor unit surface by using a soft, dry Cloth. Clean the condensate drain pipe. Once a year Clean the condensate drain pan. Once a year Throughly clean the heat exchanger. Once a year Replace the remote control batteries. Regularly Once a year Use steam to clean the heat exchanger coils and the panel vents. (consult with technician) Clean the fan. Once a year Clean the condensate drain pan. Once a year Verify that all the fan assembly is firmly tightened. Once a year Clean the electric components with air. Do not washed the 3M filter with water, because the filter can be damaged. OFF MAINTENANCE 17 consumption. * The feature can be changed according to type of model. Clean the filters with a vacuum cleaner. (Optional) Caution : Open the front cover and remove the air filter (see “Cleaning the air filter”). Remove the plasma filter after 10 seconds. Do not press the mesh (Optional) Open the front cover and remove the air filter (see “Cleaning the air filter”). The location and shape of the filters may differ, depending on the model. 18 MAINTENANCE Cleaning the 3M Filter (Optional) Open the front cover and remove the air filter (see “Cleaning the air filter”). Remove the 3M Filter. - Do not wash the 3M Filter with water because the filter can be damaged. We suggest changing the 3M Filter every 6 months. The location and shape of the filters may differ, depending on the model. For more filters, Please contact the LG service center. (Refer to the warranty card.) The feature can be changed according to type of model. 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 operating efficiency of the system and cause higher operating costs. (Rear) Air Inlet (Side) Connecting Wires Air outlet Base Plate Drain Hose Piping TROUBLESHOOTING call call call There is a burning smell and an abrupt sound coming from the unit. call 19 20 TROUBLESHOOTING Clean the air filter once every 2 weeks. See “Cleaning the Air Filter” for more information. In summer, it may take some time to cool indoor air. In this case, select the H’COOL operation to cool indoor air quickly. The air conditioner stops during operation. The auto operation or H’COOL operation is selected. In some operation modes, such as the H’COOL or Auto operation modes, you cannot adjust the fan speed. Select an operation mode in which you can adjust the fan speed. The air circulation operation or H’COOL operation is selected. In some operation modes, such as the air circulation or H’COOL mode, you cannot adjust the temperature. Select an operation mode in which you can adjust the temperature. The air conditioner is suddenly turned off. A power failure has occurred during operation. The Timer Function may have timed out, which turns the unit off. Check the timer settings. The indoor unit is still The Auto Clean function is being operated. operating even when power has been turned off. Wait for the power to come back. If you have the Auto Restart function enabled, your unit will resume its last operation several minutes after power is restored. Allow the Auto Clean function to continue since it removes any remaining moisture inside the indoor unit. If you do not want this feature, you can turn the unit off. The air outlet on the indoor The cooled air from the When the room temperature decreases, this unit is discharging mist. air conditioner makes phenomenon will disappear. mist. Water leaks from the In the heating operations, This symptom requires installing a drain hose condensed water drops under the base pan. Contact the installer. outdoor unit. from the heat exchanger. TROUBLESHOOTING A clicking sound can be heard when the unit There is noise or vibration. starts or stops due to movement of the reversing valve. Creaking sound: The plastic parts of the in door unit creak when they shrink or expand due to sudden temperature changes. Flowing or Blowing sound: This is the flow of refrigerant through the air conditioner. The indoor unit gives Odors (such as cigarette smoke) may be absorbed off an odor. into the indoor unit and discharged with airflow. Contraction or expaTak-tak noise from indoor nsion of plastic components due to chanunit. ge in temperature. 21 These are normal symptoms. The noise will stop. If the smell does not disappear, you need to wash the filter. If this does not work, contact the service center to clean your heat exchanger. It is a natural phenomenon, and can only be reduced but not overcome completely. Operation ranges The table below indicates the temperature ranges the air conditioner can be operated within. Mode Indoor temperature Outdoor temperature Cooling 18 °C~32 °C 18 °C~48 °C Heating 16 °C~30 °C -5 °C~24 °C * When the outdoor temperature drops below 0°C, heating capacity may drop slightly depending on the operation condition. 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. When the air conditioner is to be used again. • This will dry out the internal mechanisms. Clean the air filter and install it in the indoor unit. (Refer to page 17 for cleaning filters.) Turn off the circuit breaker, and disconnect the plug. Check that the air inlet and outlet of the indoor/outdoor unit are not blocked. Operate the air conditioner on Air circulation mode (Refer to page 11) for 2 to 3 hours. 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. Remove the batteries from the remote control.