ENGLISH FRANÇAIS OWNER’S MANUAL AIR CONDITIONER Please read this manual carefully before operating your set and retain it for future reference. CEILING CONCEALED DUCT MFL68120744 Rev.00_012023 www.lg.com Copyright © 2023 LG Electronics Inc. All Rights Reserved.
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.
IMPORTANT SAFETY INSTRUCTIONS 3 READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE. Always comply with the following precautions to avoid dangerous situations and ensure peak performance of your produc ! 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.
IMPORTANT SAFETY INSTRUCTIONS ENGLISH • The plug accessible have to be accessible for disconnection of the appliance. or means for disconnection must be incorporated in the fixed wiring in accordance with the wiring rules. • The appliance shall be installed in accordance with national wiring regulations. • This appliance incorporates an earth connection for functional purposes only. Operation • Take care to ensure that power cable could not be pulled out or damaged during operation.
IMPORTANT SAFETY INSTRUCTIONS CAUTION Installation • 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 3 7 TIPS FOR SAVING ENERGY IMPORTANT SAFETY INSTRUCTIONS BEFORE USE 7 7 7 7 Preparing for operation Usage Cleaning and maintenance Service 8 PRODUCT INTRODUCTION 8 9 Name and function of parts Wired Remote Controller (Accessory: PQRCUC2W) 10 OPERATING INSTRUCTIONS 10 11 12 13 14 15 16 17 Cooling Mode - Standard Operation Heating Mode(Heat pump model only) Dehumidification Mode Auto Operation Mode Fan Mode Selection of Air Flow speed Room temperatur
BEFORE USE 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. • Do not use this air conditioner for non-specified special purposes (e.
PRODUCT INTRODUCTION ENGLISH PRODUCT INTRODUCTION Name and function of parts 1 4 Air intake vents 6 7 2 5 Air outlet vents Remote Controller 3 8 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 1 Display panel for control 2 Button for mode selection 3 Power button 4 Wind speed setting button 5 Temperature setting button When the wired controller is powered on, all function icons will be displayed on the display panel for three seconds. * Some functions may not be operated and displayed depending on the product type.
OPERATING INSTRUCTIONS ENGLISH OPERATING INSTRUCTIONS Cooling Mode - Standard Operation It cools the room by comfortable and clean wind. 1 2 Press the operation. button to start the cooling Press the temperature button and set the desired temperature below the room temperature. Press the button once to increase the desired temperature by 0.5 ℃ or 1 ℃ Pressing the button once will decrease the desired temperature by 0.
OPERATING INSTRUCTIONS ENGLISH Heating Mode(Heat pump model only) It supplies warm air to the room. 1 2 Press the press the key to run the machine, then key to select the heating mode. Set the desired temperature to be higher than the current room temperature. Pressing the button once will increase the desired temperature by 0.5 °C or 1 °C Pressing the button once will decrease the desired temperature by 0.
OPERATING INSTRUCTIONS ENGLISH Dehumidification Mode It removes humidity while air-cooling weakly. ! 1 2 Press the key to run the machine, press the key to select the dehumidification mode. 3 Press button to select wind speed. [Very weak → weak → middle → strong one Po] - The initial minimum wind speed for dehumidifying is weak. When dehumidification mode is selected, “dH” will be displayed in the window as shown on the left figure.
OPERATING INSTRUCTIONS 13 ENGLISH Auto Operation Mode 1 Press the key to run the machine, then press the key to select the automatic operation mode.
OPERATING INSTRUCTIONS ENGLISH Fan Mode It blows the air without cold air. ! 1 2 Press the press the 3 Press button to select wind speed. [Very weak → weak → middle → strong one Po] - AHU compressors do not work when fans are running. key to run the machine, then key to select the air supply mode. When the air supply mode is selected, "Fn" will be displayed in the window as shown on the left figure. - The temperature cannot be adjusted under this mode.
OPERATING INSTRUCTIONS 15 ENGLISH Selection of Air Flow speed This function is used to set the speed of the fan. 1 Press the key to select the desired air flow. - Pressing the key will cause the air flow speed changes in the following order. [Very weak → weak → middle → strong → Po] - The initial air flow speed is "strong" - Incompatibility between the product and air flow speed control will hinder the function you selected. Selection of the Air Flow speed in the cooling mode.
OPERATING INSTRUCTIONS ENGLISH Room temperature detection 1 If pressing the key for more than 3 seconds, the room temperature will be displayed for 5 seconds before returning to the previous display. The room temperature may be different in temperature display depending on the setting of the room temperature sensing position of the wired controller.
OPERATING INSTRUCTIONS 17 It is the function to use preventing children or others from careless using. 1 Pressing the key and key at run time for more than 3 seconds can turn on the child lock function. - CL will be shown in the temperature display part for 3 seconds before returning to the previous mode in the initial setting of the child lock. If pressing other keys after CL setting, the function cannot be recognized, and CL is displayed for 3 seconds.
MAINTENANCE AND SERVICE ENGLISH MAINTENANCE AND SERVICE ! CAUTION Before performing any maintenance, turn off the main power to the syste Indoor Unit 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.
MAINTENANCE AND SERVICE 19 1 Operate the air conditioner on air circulation mode for 2 to 3 hours. - This will dry out the internal parts. 2 Turn off the circuit breaker. ! 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. When the air conditioner is to be used again. - Check that the air inlet and outlet of the indoor/outdoor unit are not blocked. Helpful information - The air filters and your electiric bill.
MAINTENANCE AND SERVICE ENGLISH Troubleshooting Tips! Check the following points before requesting repairs or service.... If the malfunction persist, please contact your dealer. The air conditioner does not operate. Case Explanation • 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.
العربية 22 LG-Shaker Co., Ltd.