AIR CONDITIONER Please read this manual carefully before operating your set and retain it for future reference. TYPE : 4-WAY CEILING CASSETTE www.lg.com P/NO : MFL67163901 DUTCH The equipment complies with requirements of the Technical Regulation, in terms of restrictions for the use of certain dangerous substances in electrical and electronic equipment.
Ceiling Cassette- Type Air Conditioner Owner’s Manual TABLE OF CONTENTS A. Safety Precautions......................................3 B. Product Introduction...................................6 Name and function of parts ...........................6 What to do before operation ..........................6 Operation Indication Lamps...........................6 Wired Remote Controller ...............................7 Wireless Remote Controller (Accessory).......8 Standard Operation - Standard Cooling ........
Safety Precautions Safety Precautions WARNING This symbol indicates the possibility of death or serious injury. CAUTION This symbol indicates the possibility of injury or damage. WARNING Always ground the product. • There is a risk of electric shock. For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized Service Center. Do not disassemble or repair the product by yourself. • There is risk of fire or electric shock. Use the correctly rated breaker or fuse.
Safety Precautions Indoor/outdoor wiring connections must be secured tightly and the cable should be routed properly so that there is no force pulling the cable from the connection terminals. Safely dispose off the packing materials. Like screws, nails, batteries, broken things etc after installation or svc and then tear away and thraw away the plastic packaging bags. Make sure to check that the power cable plug is not dirty, loose or broken and then only insert the plug completely.
Safety Precautions Do not use the product for special purposes, such as preserving foods, works of art, etc. It is a consumer air conditioner, not a precision refrigeration system. Do not touch the metal parts of the product when removing the air filter. • There is risk of personal injury. Do not insert hands or other objects through the air inlet or outlet while the product is operating. • There are sharp and moving parts that could cause personal injury.
Product Introduction Product Introduction Name and function of parts 6 7 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. 2 1 5 44 3 8 What to do before operation Pair system or simultaneous operation system If your installation has a customized control system, ask your LG dealer for the operation that corresponds to your system.
Product Introduction Wired Remote Controller 10 9 8 7 11 12 13 2 3 4 5 6 14 15 Please attach the inform label inside of the door. Please choose proper language depend on your country. 13 ROOM TEMPERATURE BUTTON 14 SETTING/CANCEL BUTTON 15 EXIT BUTTON ❊ Some functions may not be operated and displayed depending on the product type.
Product Introduction Wireless Remote Controller (Accessory) 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. PQWRHQ0FDB CAUTION:of handling the Remote Controller • Aim at the signal receiver on the wired remote controller so as to operate. • The remote control signal can be received at a distance of up to about 7m.
Operating Instructions Operating instructions Standard Operation - Standard Cooling 1 Press indoor. button to turn on the button to select 2 Press Cooling operation mode. the desired temperature 3 Adjust by pressing buttons. Press button to check the Room temperature. When setting the desired temperature higher than room temperature, only ventilation wind is blow out instead of cooling wind.
Operating Instructions Standard Operation - Power Cooling It makes the room cool using pleasant and fresh air quickly 1 Press indoor. button to trun on the button to select 2 Press cooling operation mode. button continuously 3 Press until 'Po' displayed. What is Power Cooling? • Desired temperature: Po (actually 18°C) • Wind flow: power wind • Wind direction: fix to air-cooling position } It make room temperature drop fast by running ❈ Partial product has no power air-cooling function.
Operating Instructions Standard Operation - Dehumidification Mode It removes humidity while air-cooling weakly. button to turn on the button to select 2 Press Dehumidification mode. The temperature setting can not be adjusted during operation this mode. the button to select 3 Press airflow rate feeble → weak → medium → strong → automatic. (The initial wind powerfulness of humidity removal drive is 'weak'.
Operating Instructions Standard Operation - Fan Mode It blows the air as it is in the indoor, not the cold wind. 1 Press indoor. button to turn on the 2 Press Mode. button to select Fan time pressing button, you 3 Every can select wind flow in order of feeble → weak → medium → strong → automatic. When running ventilation, compressor of AHU doesn't work.
Operating Instructions Standard Operation - Auto Operation Mode button to turn on the ENGLISH 1 Press indoor. button to select 2 Press Artificial intelligence Mode. can adjust 3 You the temperature as the picture on the right for cooling and heating model. the case of 4 For cooling exclusive, as the picture on the right, you can adjust the temperature from hot to cold, from "-2" to "2" based on "00".
Operating Instructions Standard Operation - Airflow Setting Wind powerfulness : You can simply adjust desired wind powerfulness. setup desired wind 1 Please powerfulness by wind powerfulness button. • Every time you press wind powerfulness, you can select the wind flow in order of ‘feeble → weak → weak medium → medium → medium strong → strong → power → automatic’. • The menu item might not be partially selected according to product function. • Please refer to product manual for product’s detailed function.
Operating Instructions Standard Operation - Temperature Setting/Room Temperature Check Temperature Setting • Press the buttons to adjust the desired temperature. : Increase 1˚C or 2˚F per one time pressing : Decrease 1˚C or 2˚F per one time pressing • Room temp: Indicate the current room temperature. • Set temp: Indicate the temperature that user want to set. ❈ Depend on what kind of controller, the desired temperature can be adjusted at 0.5˚C or 1˚F.
Operating Instructions Sub function - Plasma Purification Only products with humidifying function can use this. The method to setup cleaning air pressing 1 Repeat until icon flash. button or cancel Plasma 2 Operate Purification function by pressing button. ( icon appears/disappears on display part up to selection ) setting, press 3 After to exit. button ❈ After setup, it automatically gets out of setup mode if there is no button input for 25 seconds.
Operating Instructions Function setting - Child Lock It is the function to use preventing children or others from careless using. moving to 'setup' icon area by 2 Ifusing button, 'setup' icon blinks, and child lock function is setup if pressing button at that time. cancelling lock function, if moving 3 When to 'cancel' icon by pressing button and then, pressing button, child lock function is cancelled. button to exit.
Operating Instructions Function Setting - Change Temp Change temperature is the function to setup air-cooling and heating drive automatically changeable according to the temperature at artificial intelligence drive mode. 1 Repeaticonpressing flash. button until button to change. 2 Press ❈ Converting temp value : 1~7 button to complete 3 Press and active the setting process. button to exit or 4 Press system will automatically release without any input after 25 seconds.
Operating Instructions Function setting - Elevation Grill This function is to move the indoor filter up/down for cleaning filter. button until icon flash. to descent using button 2 Move and press button will display descent icon and the up/down grill will descent. up/down grill descents to the 3 When desired position, move to stop icon suing button and press to stop up/down grill.
Operating Instructions Function setting - Filter Sign Clear This function is to clear the indicator of indoor filter cleaning. 1 Press until the button repeatedly is flashing. the is flashing, press 2 When the to clear this display • When filter is covered by dust, it will reduce cooling/heating efficiency and accumulate more electric power. Therefore. do clean the filter whenever cleaning time is expired.
Operating Instructions Function setting - Vane Angle Control This function is to adjust angle at which airflow is blow out. button until button to select active vane : 2 Press 1 / 2 / 3 / 4 / All / Standard Select Vane number using buttons. ❈ Vane number : No. 1, 2., 3, 4, all, or standard - Selected vane is in operation. - Please verify the operating vane. - To set the angle of all the vanes, select 'all'. - To set as the factory default settings, select 'standard'.
Operating Instructions Function setting - Changing Current Time press function setup 1 Please button. If pressing function setup button repeatedly, it moves to time setup menu. ‘Time setup’ icon is indicated at that time and date blinks at current time indication area. Ex) Changing Current Time as 'Monday / AM 10:20'. 2 Press day. key to adjust the current key to move to AM/ PM setting 3 Press mode (the 'AM/ PM segment will flash). AM/ PM value by 4 Setting pressing button.
Operating Instructions button to move to 'Minute' 7 Press setting mode. (the 'Minute' segment will ENGLISH flash) Minute value by pressing 8 Setting button. 9 Press 10 button to finish. In the process, press button to release and exit from setting mode. (In case of exit with incomplete information, it will return to the previous setting) ❈ When exiting without pressing set button, the manipulated value is not reflected.
Operating Instructions Programming - Simple Reservation You can set the reservation conveniently in the units of 1 hour from 1 hour to 7 hours. button to enter the 1 Press Programming mode. (the segment flashing) Ex) Setting Simple Reservation time as '3'. 2 Press time. 3 Press button to adjust reservation button to finish setting. button to exit. 4 Press ❈ After setup, it automatically gets out of setup mode if there is no button input for 25 seconds.
Operating Instructions Programming : Weekly Reservation You can set the daily reservation in weekly unit. Weekly reservation keeps operating until before you cancel it once you setup Please move to reservation setup mode by pressing reservation button. ❈ You can setup two weekly reservations for one day, and up to fourteen reservations for a week. For example, to setup (Tuesday morning 11:30 turned on ~ afternoon 12:30 turned off), you setup in order below.
Operating Instructions move to 'AM/PM' setup part 10 Please of turning off by using button. - AM/PM setup is identical with turning on time setup. 11 Please move to 'hour' setup part of turning off by using Right button. - It is the part to reserve the time at which air-conditioner is turned off. - If 'hour' indication blinks, please setup 'hour'. ❈ Please setup 'hour' and 'minute' identically with the method to setup turning on time.
Operating Instructions Programming - Sleep Reservation button to enter the 1 Press Programming mode. Ex) Setting Sleep Reservation time as '3'. pressing button to enter the 2 Repeat SLEEP reservation setting mode. ( 3 Press time. segment flashing) button to adjust reservation The SLEEP reservation time is from 1 to 7 hours. button to finish setting. 4 Press Whenever reservation is done. button to exit.
Operating Instructions Programming - ON Reservation Automatically turned On at reserved time that you set. 1 Press button. Ex) Setting ON Reservation Time as 'AM 10:20'. pressing button to 2 Repeat enter the ON reservation setting mode. ( segment flashing) 3 Press setting. button to adjust AM/ PM button to Hour setting 4 Press mode. When the Hour icon flash, please setting time. The setting range is within 1~12. button to shift to Minute 5 Press setting mode.
Operating Instructions setup mode if there is no button input for 25 seconds. ❈ When exiting without pressing set button, the manipulated value is not reflected. - If reservation is set, 'turned on' indication shows up at the lower part of LCD screen, and air-conditioner product runs at the time that is set. - If reservation is cancelled, 'turned on' indication disappears. Owner's Manual 29 ENGLISH button to exit.
Operating Instructions Programming - OFF Reservation Automatically turned Off at reserved time that you set. 1 Press button. Ex) Setting OFF Reservation Time as 'AM 10:20'. pressing button 2 Repeatedly to enter the OFF reservation setting mode. ( segment flashing) 3 Press setting. button to adjust AM/ PM button to shift to Hour 4 Press setting mode. When the Hour icon flash, please setting time. The setting range is within 1~12. button to shift to Minute 5 Press setting mode.
Operating Instructions setup mode if there is no button input for 25 seconds. ❈ When exiting without pressing set button, the manipulated value is not reflected. - If reservation is set, 'turned off' indication shows up at the lower part of LCD screen, and air-conditioner product runs at the time that is set. - If reservation is cancelled, 'turned off' indication disappears. Owner's Manual 31 ENGLISH button to exit.
Operating Instructions Programming : Holiday Reservation It automatically stops at reserved day that you set. press button. 1 Please It enters into reservation setup mode. move to 'holiday' by repeatedly 2 Please pressing button. move to 'date' that 3 Please you want to setup holiday by using button. or cancel holiday by using 4 Pleaseorappointbutton. For example, when you setup Monday/Friday to holiday - 'Monday', 'Friday' letter disappears. press 5 Please holiday setup.
Operating Instructions Ventilation Kit Control(Optional) Ventilation interlinked operation button on the remote 1 Press controller control panel. - It is only used when air conditioner and general ventilation is interlinked. 'Start/Stop' button at ventilation 2 Pressing mode will start ventilation. button will change the 3 Pressing ventilation operation mode.
Maintenance and Service Maintenance and Service Indoor Unit NOTE Supply power must be disconnected before cleaning the indoor unit. Air Filters The air filters behind the front grille should be checked and cleaned once every 2 weeks or more often if neccessary. 1 Remove the Air filters. ■ Take hold of the tab and pull slightly forward to remove the filter. CAUTION: When the air filter is to be removed, do not touch the metal parts of the indoor unit. It may cause an injury.
Maintenance and Service Purifying filter(Optional) The PLASMA filter behind the air filters should be checked and cleaned once every 3 months or more often if necessary. 1 After removing the air filters, pull slightly forward to remove the PLASMA filter. 2 Dip the PLASMA filter into the water mixed with neutral detergent, for 20~30 minutes. 3 Dry the PLASMA filter in the shade for a day (Especially, the humidity must be removed perfectly on this parts). 4 Note the cuts of electric discharge lines.
Maintenance and Service Operation Tips! Keep blinds or curtains closed. This is not good for the health and wastes electricity. Do not let direct sunshine enter the room when the air conditioner is in operation. Make sure that the doors and windows are shut tight. Clean the air filter regularly. Avoid opening doors and windows as much as possible to keep the cool air in the room. Blockages in the air filter reduce the airflow and lower cooling and dehumidifying effects.
Maintenance and Service Troubleshooting Tips! Save time and money! Case The air conditioner does not operate. The room has a peculiar odor. It seems that condensation is leaking from the air conditioner. Air conditioner does not operate for about 3 minutes when restart. Does not cool or heat effectively. The air conditioner operation is noisy. Crack sound is heard. Filter sign lamp (LED) is ON. Remote control display is faint, or no display at all.
Ceiling Cassette-Type Air Conditioner
