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OWNER'S MANUAL
AIR
CONDITIONER
Please read this manual carefully before operating your set and
retain it for future reference.
CEILING CASSETTE, CEILING CONCEALED DUCT
Original instruction
[Representative] LG Electronics Inc. EU Representative :
LG Electronics European Shared Service Center B.V.
Krijgsman 1, 1186 DM Amstelveen, The Netherlands
[Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro,
Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA
MFL67870330
Rev.02_033120
Copyright © 2016 - 2020 LG Electronics Inc. All Rights Reserved.
www.lg.com
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Summary of Contents for LG MT11R
- Page 1 LG Electronics European Shared Service Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands [Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-gu, Changwon-si, Gyeongsangnam-do, KOREA www.lg.com MFL67870330 Rev.02_033120 Copyright © 2016 - 2020 LG Electronics Inc. All Rights Reserved.
- Page 2 TIPS FOR SAVING ENERGY 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: •...
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Page 3: Important Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS IMPORTANT SAFETY INSTRUCTIONS The following symbols are displayed on indoor and outdoor units. Read the precautions in this manual This appliance is filled with carefully before operating the unit. flammable refrigerant (R32) This symbol indicates that a service This symbol indicates that the personnel should be handling this Operation Manual should be read... - Page 4 IMPORTANT SAFETY INSTRUCTIONS • Use the correctly rated breaker or fuse. There is risk of fire or electric shock. • Do not modify or extend the power cable. If the power cable or cord has scrathes or skin peeled off or deteriorated then it must be replaced.
- Page 5 IMPORTANT SAFETY INSTRUCTIONS • 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. Children may play with them and cause injury. •...
- Page 6 IMPORTANT SAFETY INSTRUCTIONS • 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.
- Page 7 IMPORTANT SAFETY INSTRUCTIONS • Keep level even when installing the product. To avoid vibration or noise. • Do not install the product where the noise or hot air from the outdoor unit could damage or disturb the neighborhoods. It may cause a problem for your neighbors and hence dispute.
- Page 8 IMPORTANT SAFETY INSTRUCTIONS • If the refrigerant gas leaks during the installation, ventilate the area immediately. Otherwise it can be harmfull for your health. • Dismantling the unit, treatment of the refrigerant oil and eventual parts should be done in accordance with local and national standards.
- Page 9 • The appliance shall be installed in accordance with national wiring regulations. • If anyone other than a licensed Professional installs, repairs, or alters LG Electronics Air Conditioning Products, the warranty is voided. - All costs associated with repair are then the full responsibility...
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Page 10: Table Of Contents
TABLE OF CONTENTS TABLE OF CONTENTS TIPS FOR SAVING ENERGY IMPORTANT SAFETY INSTRUCTIONS BEFORE USE About the system Preparing for operation Usage Cleaning and maintenance Service Disposal PRODUCT INTRODUCTION Name and function of parts (CEILING CASSETTE) Name and function of parts (CEILING CONCEALED DUCT) Model designation Operation Indicator Lamp Wired Remote Controller... - Page 11 TABLE OF CONTENTS Programming - Simple Reservation Programming - Weekly Reservation Programming - Sleep Reservation Programming - ON Reservation Programming - OFF Reservation Programming - Holiday Reservation MAINTENANCE AND SERVICE Indoor Unit Purifying filter(Optional) Operation Tips! When the air conditioner is not going..Troubleshooting Tips! Save time and money! Call the service immediately in the following situations...
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Page 12: Before Use
BEFORE USE BEFORE USE About the system This system of air conditioner can be used for heating/cooling applications. 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. -
Page 13: Product Introduction
PRODUCT INTRODUCTION PRODUCT INTRODUCTION Name and function of parts (CEILING CASSETTE) 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. -
Page 14: Model Designation
PRODUCT INTRODUCTION Model designation - Product Name : Air conditioner - Model Name : Serial number Chassis name Indoor Unit / Outdoor Units N : Indoor Unit U : Outdoor Unit Detailed product type for U- / C- series models L : Low Static H : High COP E : Econo... -
Page 15: Wired Remote Controller
PRODUCT INTRODUCTION Wired Remote Controller OPERATION INDICATION SCREEN SET TEMPERATURE Button FAN SPEED Button ON/OFF Button OPRATION MODE SELECTION Button WIRELESS REMOTE CONTROLLER RECEIVER • Some products don't receive the wireless signals. AIR FLOW Button SUBFUNCTION Button FUNCTION SETTING Button VENTILATION Button RESERVATION UP,DOWN,LEFT,RIGHT Button... -
Page 16: Wireless Remote Controller (Accessory)
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. NOTE • The wireless remote controller do not operate the vane angle control.(4Way Type) •... -
Page 17: Operating Instructions
OPERATING INSTRUCTIONS OPERATING INSTRUCTIONS Standard Operation - Standard Cooling It cools the room by comfortable and clean wind. Press button to turn on the indoor. Press button to select Cooling operation mode. Adjust the desired temperature by pressing buttons. Press button to check the Room temperature. -
Page 18: Standard Operation - Power Cooling
OPERATING INSTRUCTIONS Standard Operation - Power Cooling It makes the room cool using pleasant and fresh air quickly. Press button to trun on the indoor. Press button to select cooling operation mode. Press button continuously until 'Po' displayed. What is Power Cooling? •... -
Page 19: Standard Operation - Dehumidification Mode
OPERATING INSTRUCTIONS Standard Operation - Dehumidification Mode It removes humidity while air-cooling weakly. Press button to turn on the indoor. Press button to select Dehumidification mode. The temperature setting can not be adjusted during operation this mode. Press the button to select airflow rate feeble →... -
Page 20: Standard Operation - Fan Mode
OPERATING INSTRUCTIONS Standard Operation - Fan Mode It blows the air as it is in the indoor, not the cold wind. Press button to turn on the indoor. Press button to select Fan Mode. Every time pressing button, you can select wind flow in order of feeble →... -
Page 21: Standard Operation - Auto Operation Mode
OPERATING INSTRUCTIONS Standard Operation - Auto Operation Mode Press button to turn on the indoor. Press button to select Artificial intelligence Mode. You can adjust the temperature as the picture on the right for cooling and heating model. For the case of cooling exclusive, as the picture on the right, you can... -
Page 22: Standard Operation - Airflow Setting
OPERATING INSTRUCTIONS Standard Operation - Airflow Setting Wind powerfulness : You can simply adjust desired wind powerfulness. Please setup desired wind powerfulness by wind powerfulness button. • Every time you press wind powerfulness, you can select the wind flow in order of ‘feeble →... -
Page 23: Standard Operation - Temperature Setting/Room Temperature Check
OPERATING INSTRUCTIONS Standard Operation - Temperature Setting/Room Temperature Check Temperature Setting We can simply adjust the desired temperature. • 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 •... -
Page 24: Sub Function - Plasma Purification(Accessory)
OPERATING INSTRUCTIONS Sub Function - Plasma Purification(Accessory) Only products with humidifying function can use this. The method to setup cleaning air Repeat pressing button until icon flash. Operate or cancel Plasma Purification function by pressing button. icon appears/disappears on display part up to selection ) After setting, press button... -
Page 25: Sub Function - Comfort Cooling
OPERATING INSTRUCTIONS Sub Function - Comfort Cooling The comfort cooling is the function to automatically control the cooling strength to maintain the pleasant feeling without turning off the product after the indoor temperature reached the desired temperature. Press button repeatedly until Comfort cooling icon displayed. -
Page 26: Function Setting - Change Temp
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. Repeat pressing button until icon flash. Press button to change. ❈ Converting temp value : 1~7 Press button to complete and active the setting process. -
Page 27: Function Setting - Elevation Grill(Accessory)
OPERATING INSTRUCTIONS Function Setting - Elevation Grill(Accessory) This function is to move the indoor filter up/down for cleaning filter. Press button Repeat pressing button until icon flash. Move to descent using button and press button will display descent icon and the up/down grill will descent. -
Page 28: Function Setting - Filter Sign Clear
OPERATING INSTRUCTIONS Function Setting - Filter Sign Clear This function is to clear the indicator of indoor filter cleaning. Press button repeatedly until the is flashing. When the is flashing, press to clear this display • When filter is covered by dust, it will reduce cooling/heating efficiency and accumulate more electric power. -
Page 29: Function Setting - Vane Angle Control
OPERATING INSTRUCTIONS Function Setting - Vane Angle Control This function is to adjust angle at which airflow is blow out. * Some functions may not be operated and displayed depending on the product type. Repeat pressing button until icon flash. Press button to select active vane : 1 / 2 / 3 / 4 / All / Standard... -
Page 30: Function Setting - Changing Current Time
OPERATING INSTRUCTIONS Function Setting - Changing Current Time Please press function setup 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'. - Page 31 OPERATING INSTRUCTIONS Press button to move to 'Minute' setting mode. (the 'Minute' segment will flash) Setting Minute value by pressing button. Press 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) ❈...
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Page 32: Programming - Simple Reservation
OPERATING INSTRUCTIONS Programming - Simple Reservation You can set the reservation conveniently in the units of 1 hour from 1 hour to 7 hours. Press button to enter the Programming mode. (the segment flashing) Ex) Setting Simple Reservation time as '3'. Press button to adjust reservation time. -
Page 33: Programming - Weekly Reservation
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. - Page 34 OPERATING INSTRUCTIONS Please move to 'AM/PM' setup part of turning off by using button. - AM/PM setup is identical with turning on time setup. 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.
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Page 35: Programming - Sleep Reservation
OPERATING INSTRUCTIONS Programming - Sleep Reservation Sleep reservation is the function of air-conditioner to run and stop after certain period of time at sleep mode before sleep. When connected to a ventilation product and set the sleep reservation, when it goes to the sleep mode, after the set time has elapsed. -
Page 36: Programming - On Reservation
OPERATING INSTRUCTIONS Programming - ON Reservation Automatically turned On at reserved time that you set. Press button. Ex) Setting ON Reservation Time as 'AM 10:20'. Repeat pressing button to enter the ON reservation setting mode. segment flashing) Press button to adjust AM/ PM setting. - Page 37 OPERATING INSTRUCTIONS Press button to exit. ❈ After setup, it automatically gets out of 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.
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Page 38: Programming - Off Reservation
OPERATING INSTRUCTIONS Programming - OFF Reservation Automatically turned Off at reserved time that you set. Press button. Ex) Setting OFF Reservation Time as 'AM 10:20'. Repeatedly pressing button to enter the OFF reservation setting mode. segment flashing) Press button to adjust AM/ PM setting. - Page 39 OPERATING INSTRUCTIONS Press button to exit. ❈ After setup, it automatically gets out of 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.
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Page 40: Programming - Holiday Reservation
OPERATING INSTRUCTIONS Programming - Holiday Reservation It automatically stops at reserved day that you set. Please press button. It enters into reservation setup mode. Please move to 'holiday' by repeatedly pressing button. Please move to 'date' that you want to setup holiday by using button. -
Page 41: Maintenance And Service
MAINTENANCE AND SERVICE MAINTENANCE AND SERVICE - Never use any of the followings: CAUTION Water hotter than 40 °C. Could cause deformation and/or discoloration. Before performing any maintenance, turn off the main power to the system. Volatile substances. Could damage the surfaces of the air conditioner. -
Page 42: Purifying Filter(Optional)
MAINTENANCE AND SERVICE Purifying filter(Optional) Replacement - Recomended use period : About 2 years Cleaning Open front panel and remove air filter. The PLASMA filter behind the air filters should be checked and cleaned once every 3 months or more often if necessary. Remove air purifying filter. -
Page 43: Operation Tips
MAINTENANCE AND SERVICE Operation Tips! Do not overcool the room. Keep blinds or curtains Keep the room temperature closed. uniform. This is not good for the health and wastes electricity. Do not let direct sunshine enter Adjust the vertical and the room when the air horizontal airflow direction to conditioner is in operation. -
Page 44: Troubleshooting Tips! Save Time And Money
MAINTENANCE AND SERVICE Troubleshooting Tips! Save time and money! Check the following points before requesting repairs or service..If the malfunction persist, please contact your dealer. Case Explanation • Have you made a mistake in timer operation? The air conditioner does not operate.