LG HSN18ISY2 Owner's Manual

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OWNER'S MANUAL

AIR CONDITIONER

In order to use the product safely and conveniently, please

read the owner's manual before using the product.

ENGLISH

MFL71982447

Rev.01_011325

Scan the QR code to see the manual.

www.lg.com

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Page 1 Scan the QR code to see the manual. OWNER'S MANUAL AIR CONDITIONER In order to use the product safely and conveniently, please read the owner’s manual before using the product. ENGLISH www.lg.com MFL71982447 Rev.01_011325 Copyright © 2017-2025 LG Electronics. All Rights Reserved...
Page 2: Table Of Contents
Preparation before Operation................13 Wireless Remote Control Overview ...............15 Using Wireless Remote Control ..............17 Special Functions Overview ................28 Using Special Functions ..................29 SMART FUNCTIONS LG ThinQ Application ..................32 Diagnosis Using LG ThinQ ................34 MAINTENANCE Cleaning ......................36 TROUBLESHOOTING Before Calling for Service................41...
Page 3: Safety Instructions
SAFETY INSTRUCTIONS SAFETY INSTRUCTIONS READ ALL INSTRUCTIONS BEFORE USE 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. Safety Messages This symbol is displayed to indicate matters and operations that can cause risk.
Page 4: Warning Instructions
SAFETY INSTRUCTIONS Notes for Flammable Refrigerant The following symbols are displayed on units. This symbol indicates that this appliance uses a flammable refrigerant. If the refrigerant is leaked and exposed to an external ignition source, there is a risk of fire. This symbol indicates that the Owner's Manual should be read carefully.
Page 5: Installation
SAFETY INSTRUCTIONS • Failure to read and follow all instructions in this manual can result in equipment malfunction, property damage, personal injury and/or death. • The refrigerant and insulation blowing gas used in the appliance require special disposal procedures. Consult a service agent or a similarly qualified person before disposing of them.
Page 6: Operation
SAFETY INSTRUCTIONS • Install the panel and the cover of the control box safely. • Install a dedicated electric outlet and circuit breaker before using the air conditioner. • Use standard circuit breaker and fuse that conform to the rating of the air conditioner.
Page 7: Remote Control
SAFETY INSTRUCTIONS • Do not touch the refrigerant pipe, water pipe or any internal parts while the unit is operating or immediately after operation. • Do not leave flammable substances such as gasoline, benzene, or thinner near the air conditioner. •...
Page 8 SAFETY INSTRUCTIONS Maintenance • Before cleaning or performing maintenance, disconnect the power supply and wait until the fan stops. • Do not clean the appliance by spraying water directly onto the product. Refrigerant General • Use only the refrigerant specified on the air conditioner label. •...
Page 9: Caution Instructions
SAFETY INSTRUCTIONS • The appliance shall be stored in a well-ventilated area where the room size corresponds to the room area as specified for operation. • Keep any required ventilation openings clear of obstruction. • The appliance shall be stored in a room without continuously operating open flames (for example an operating gas appliance) and ignition sources (for example an operating electric heater).
Page 10 SAFETY INSTRUCTIONS Operation • Make sure that the filter is installed before operating the air conditioner. • Do not drink the water drained from the air conditioner. • Do not place any object on the air conditioner. • Do not let the air conditioner run for a long time when humidity is very high or when a door or a window has been left open.
Page 11: Operation
OPERATION OPERATION Before Use Notes for Operation • Adjust the direction of the airflow vertically or horizontally to circulate indoor air. • Speed up the fan to cool or warm indoor air quickly, within a short period of time. • Turn off the appliance and periodically open windows for ventilation. The indoor air quality may deteriorate if the appliance is used for long durations.
Page 12: Product Overviews
OPERATION Product Overviews Wall-Mounted Type 1 Type 2 Air Filter Air Deflector (Up-Down Vane) Air Intake Vents Air Deflector (Left-Right Louver) Front Cover Power Button Air Outlet Vents NOTE • The number and location of parts may vary depending on the model of the appliance. •...
Page 13: Preparation Before Operation
OPERATION Preparation before Press the button to set the correct Operation time. Inserting the Batteries into the Wireless Remote Control Insert AAA (1.5 V) batteries into the wireless remote control. • Remove the battery cover, then insert the new batteries and make sure that the + and – Press the SET/CANCEL button to stop the terminals of the batteries are installed correctly.
Page 14 OPERATION Press and hold the UP-DOWN SWING button for about 5 seconds, to change units between...
Page 15: Wireless Remote Control Overview
OPERATION Wireless Remote Control Overview Wireless Remote Control Buttons You can operate the appliance more conveniently Image Description with the wireless remote control. COMFORT AIR Adjusts the airflow to deflect wind. You can avoid direct winds. POWER Turns the appliance on or off. LIGHT OFF Turns the indoor unit display on or off.
Page 16 OPERATION Image Description Image Description TEMPERATURE ADJUST ROOM TEMP Adjusts the desired room Displays the room temperature. temperature. DIAGNOSIS [5 s] Press and hold the ROOM TEMP button for about 5 seconds, to easily check the maintenance information of an appliance. FAN SPEED FUNC.
Page 17: Using Wireless Remote Control
OPERATION Using Wireless Remote Press the MODE button repeatedly to change Control the operating mode. Operating with the Wireless Remote Control Point the wireless remote control towards the signal receiver at the right side of the appliance to operate it. Cooling Only Model Cooling and Heating Model Cooling mode...
Page 18: Auto Mode
OPERATION Press the MODE button repeatedly to select Wireless Indoor Unit the Cooling mode. Speed Remote Icon Control Icon High Medium - High Medium Medium - Low Press the button to set the desired temperature. Natural Wind NOTE • The Natural Wind fan speed setting adjusts the speed automatically.
Page 19: Dehumidification Mode
OPERATION Press the button to select the desired Press the MODE button repeatedly to select operation code if the temperature is higher or Auto Changeover mode. lower than the desired temperature. Code Description Press the button to set the desired temperature.
Page 20: Fan Mode
OPERATION Press the MODE button repeatedly to select Press the button to set the desired the Dehumidification mode. temperature. NOTE NOTE • will be displayed on some indoor unit under • You cannot adjust the room temperature. It is the following conditions: adjusted automatically.
Page 21: Adjusting The Airflow Direction
OPERATION Press the FAN SPEED button to adjust the fan Press the JET MODE button. speed. NOTE • is displayed on some indoor units. NOTE • Jet Cooling Mode The strong cool air blows out for 30 minutes. Jet Mode After 30 minutes, the temperature is maintained at 18 by default.
Page 22: Setting The On Timer
OPERATION Comfort Air Function (On Some - Select to adjust the up-down direction of the airflow automatically. Models) You can conveniently set the vane to a preset position to deflect the supply air away from blowing directly onto the occupants in the room. Turn the appliance on.
Page 23 OPERATION Press the TIMER button repeatedly. Press the SET/CANCEL button to cancel the setting. • The icon below flashes at the bottom of the display screen. Setting the Off Timer This function can be set when the appliance is Press the button to set the desired turned on or off.
Page 24: Cancelling The Off Timer
OPERATION Cancelling the Off Timer • The icon below flashes at the bottom of the display screen. Press the TIMER button repeatedly. • The icon below flashes at the bottom of the display screen. Press the button to set the desired time.
Page 25 OPERATION • Although the remark for fan speed on the Press and hold the ENERGY CTRL. button for display screen may be changed, the fan speed is about 3 seconds. adjusted automatically. • The button name varies by model. Light Off Function (On Some Models) You can set the brightness of the indoor unit display screen.
Page 26: Manual Operation
OPERATION • Capacity may decrease when the Energy NOTE Control function is selected. • The actual power may differ from the power • The desired temperature is displayed for about 5 displayed. seconds if you press the FAN SPEED, button. •...
Page 27 OPERATION • Features may change depending on the model When the appliance beeps twice, release the type. POWER button . The lamp will flash. This • The temperature cannot be altered when using repeats 4 times. the POWER button • For Cooling-Only models, the temperature is set Type 1 to 22 by default.
Page 28: Special Functions Overview
OPERATION Special Functions Overview Special Functions Icon Description Air Purification Functions The Ion generator uses millions of ions to help improve indoor air quality. Silent Function Reduces noise from outdoor units. Ion Care Function Keeps your skin moisturized by generating ion clusters. Jet Dry Function Lowers indoor humidity quickly.
Page 29: Using Special Functions
OPERATION Using Special Functions Air Purification Functions (On Some Models) Setting and Cancelling Special You can supply clean and fresh air using ion Functions particles and the filter. Setting the Special Functions Turn the appliance on. Press the FUNC. button repeatedly to select Function Description the desired function.
Page 30 OPERATION • This function is not available with the Sleep NOTE function. • This function is disabled when you press the • This function is disabled when you press the MODE, ENERGY CTRL. or JET MODE button. MODE button. • This function is available with the Cooling, Heating, Auto Changeover and Auto Operation modes.
Page 31 OPERATION Mosquito Away Function (On Comfort Sleep Function (On Some Models) Some Models) You can fan away mosquitoes by generating a Use it before sleeping. The appliance will high-frequency wave. automatically change the temperature and fan speed due to creat a comfortable sleep enviroment.
Page 32: Smart Functions
NOTE • In the following cases, you must update the network information for each appliance in the Run the LG ThinQ application and sign in with LG ThinQ application under Device Cards your existing account or create an LG account Settings Change Network.
Page 33 SMART FUNCTIONS • LG ThinQ is not responsible for any network such as dust are washed away and the appliance is connection problems or any faults, kept clean. malfunctions, or errors caused by network On some indoor units, appears on the display of connection.
Page 34: Open Source Software Notice
LG Electronics will also provide open source code to you on CD-ROM for a charge covering the cost of appears on the display of the indoor unit on performing such distribution (such as the cost of some models.
Page 35 Using Audible Diagnosis to Diagnose Issues Follow the instructions below to use the audible diagnosis method. • Launch the LG ThinQ application and select the Smart Diagnosis feature in the menu. Follow the instructions for audible diagnosis provided in the LG ThinQ application.
Page 36: Maintenance Cleaning
MAINTENANCE MAINTENANCE Cleaning WARNING • Before cleaning or performing maintenance, disconnect the power supply and wait until the fan stops. Cleaning Interval Cleaning the Appliance If the appliance will not be used for an extended period of time, dry the appliance to maintain it in the best condition.
Page 37 MAINTENANCE Type Description Interval Outdoor unit Have a professional clean the heat exchanger coils and the Once a year panel vents. (Consult with technician.) Have a professional clean the fan. Once a year Have a professional clean the condensate drain pan. Once a year Have a professional verify that all the fan assembly is firmly Once a year...
Page 38: Removing And Replacing The Air Filter
MAINTENANCE Removing and Replacing the Air Insert the hooks on the air filter into the slots Filter on the back of the front panel. NOTE • Do not bend the air filter, as it may break. • Assemble the air filter properly to prevent dust and other substances from entering the appliance.
Page 39: Cleaning The Air Filter
MAINTENANCE Holding the knobs of the air filters, pull them Dry the filter in the shade. down slightly and remove them from the indoor unit. Insert the hooks on the air filters into the front cover. NOTE • Do not operate the appliance without the filter in place.
Page 40 MAINTENANCE Insert the air cleaning filter. Check the side of the front cover to make sure that the air filters are assembled correctly. Assemble the air filter. Check the side of the front cover to make sure that the air filter are assembled correctly. Type 2 Turn off the power to the appliance.
Page 41: Troubleshooting
TROUBLESHOOTING TROUBLESHOOTING Before Calling for Service Please check the following before you contact the service centre. If the problem persists, contact your local service centre. NOTE • Some functions may not be supported, depending on the model. Self-Diagnosis Function This appliance has a built-in self-diagnosis function. If an error occurs, the lamp of the indoor unit will flash in 2-second intervals.
Page 42 TROUBLESHOOTING Symptoms Possible Cause & Solution The appliance stops The appliance is suddenly turned off. during operation. • The Off Timer function may have timed out, which turns the appliance off. Check the timer settings. A power failure has occurred during operation. •...
Page 43 TROUBLESHOOTING Symptoms Possible Cause & Solution The appliance does not The desired temperature is higher than the current temperature. emit cool air. • Set the desired temperature to a level lower than the current temperature. There is a heating source nearby. •...
Page 44 • Find the Wi-Fi network connected to your smartphone and remove it, then not connected to the register your appliance on LG ThinQ. Wi-Fi network. Mobile data for your smartphone is turned on. • Turn off the Mobile data of your smartphone and register the appliance using the Wi-Fi network.
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