OWNER’S MANUAL AIR CONDITIONER Read this owner’s manual thoroughly before operating the appliance and keep it handy for reference at all times. TYPE : WINDOW EN ENGLISH LW1516ER LW1521ERSM LW1816ER LW1821ERSM LW2516ER LW2521ERSM *MFL71860130* MFL71860130 Rev.00_022322 www.lg.com Copyright © 2022 LG Electronics Inc.
TABLE OF CONTENTS SAFETY INSTRUCTIONS...............................................................3 IMPORTANT SAFETY INSTRUCTIONS...........................................................4 PRODUCT OVERVIEW...................................................................8 Exterior Parts.....................................................................................................8 Interior Parts....................................................................................................
SAFETY INSTRUCTIONS EN READ ALL INSTRUCTIONS BEFORE USE Your safety and the safety of others are very important. We have provided many important safety messages in this manual and on your appliance. Always read and follow all safety messages. This is the safety alert symbol. This symbol alerts you to potential hazards that can kill or injure you and others. All safety messages will follow the safety alert symbol and either the word WARNING or CAUTION.
EN IMPORTANT SAFETY INSTRUCTIONS WARNING To reduce the risk of explosion, fire, death, electric shock, scalding or injury to persons when using this product, follow basic precautions, including the following: INSTALLATION • • • • • • • • • • • • • • • • • • • • • 4 Before use, the appliance must be properly installed as described in this manual. Contact the authorized service technician for repair or maintenance of this unit. Contact the installer for installation of this unit.
EN OPERATION • Use this appliance only for its intended purpose. • Never attempt to operate this appliance if it is damaged, malfunctioning, partially disassembled, or has missing or broken parts, including a damaged cord or plug. • Repair or immediately replace all power cords that have become frayed or otherwise damaged. Do not use a cord that shows cracks or abrasion damage along its length or at either end. • Do not run cord under carpets or mats where it could be stepped on and damaged.
EN CAUTION To reduce the risk of minor or moderate injury to persons, malfunction, or damage to the product or property when using this product, follow basic precautions, including the following: INSTALLATION • Take care when installing the product that exhaust or condensation does not damage nearby property. • Follow installation instructions exactly to avoid excessive vibration or water leakage. • Wear gloves and use caution when unpacking and installing the appliance.
EN REFRIGERANT (FOR R32 ONLY) WARNING • Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer. • The appliance shall be stored in a room without continuously operating ignition sources (for example: open flames an operating gas appliance or an operating electric heater). • Do not pierce or burn. Be aware that flammable refrigerants may not contain an odor.
PRODUCT OVERVIEW EN Exterior Parts Interior Parts 7 3 1 4 5 2 4 1 5 6 8 6 8 3 2 7 1 Control Panel 1 Evaporator 2 Remote Control 2 Air Guide 3 Air Filter 3 Brace 4 Vertical Air Deflector (Horizontal Louver) 4 Compressor 5 Horizontal Air Deflector (Vertical Louver) 5 Condenser 6 Front Grille 6 Base Pan 7 Air Outlet 7 Power Cord 8 Cabinet
INSTALLATION EN Electrical Data Power cord may include a current interrupter device. TEST and RESET buttons are provided on the plug case. The device should be tested on a periodic basis by frist pressing the TEST button and then the RESET button. If the TEST button does not trip or if the RESET button will not stay engaged, discontinue use of the air conditioner and contact a qualified service technician.
EN Parts Included (Appearance May Vary) Heatproof foam (2) (Adhesive backed) Foam-PE (2) (Adhesive backed) Foam strip (Non-adhesive) Right curtain panel Lower panel guide (2) Window locking bracket Left curtain panel Support bracket (2) Type “A” Screws (12) Type “B” Screws (7) Carriage Bolts (2) Lock Nuts (4) Sill bracket (2) Type “C” Screws (5) Type “D” Screws (2) Tools Needed Phillips-head screwdriver Flat-blade screwdriver Adjustable wrench Level Tape measure Scissors or Cutting knife
EN How to Install the Unit 1 To prevent vibration and noise, make sure the unit is installed securely and firmly. 2 3 Install the unit out of direct sunlight. There should be no obstacles, such as a fence or wall, within 20” from the back of the cabinet because it will prevent heat radiation of the condenser. Restriction of outside air will greatly reduce the cooling efficiency of the air conditioner.
EN Preparation of the Cabinet 1 4 Remove 4 screws which fasten the cabinet at both sides and at the back. (Keep the screws for later use.) Insert the hooks on the lower panel guides into the slots on the bottom of the cabinet. Make sure that the flanges on the lower panel guides will face toward the inside of the room. Shipping Screws Hook 2 Slide the unit from the cabinet by gripping the base pan handle and pulling forward while bracing the cabinet.
EN 3 Cabinet Installation Center Hole Inside Sill Outside Sill 1 Open the window. Mark a line on the center of the inside sill and extending across the center of the outside sill. Loosely attach each sill bracket to a support bracket using a carriage bolt and a lock nut. Sill Bracket Carefully place the cabinet back in the window and align the cabinet track holes with the support brackets. Attach each support bracket to the cabinet through a cabinet track hole, using a type D screw and a lock nut.
EN 5 Pull each curtain panel out until it meets the window sash track. Pull the bottom window sash down behind the upper panel guide until they meet. Upper Panel Guide Sash Track Inside Window Sill Front Angle CAUTION • The unit is heavy. Use an assistant to help lift the unit and set it in place. Lifting and maneuvering the unit by yourself could result in injury. • Hold the unit firmly in place until the window frame is lowered to meet the top surface of the unit directly behind the upper guide.
EN 4 Connect the wire harness before assembling the front grille. 7 After the air conditioner is installed, measure the curtain panel on each side and cut the adhesive-backed heatproof foam to fit each panel. The size of the panels may differ. Remove the backing from the heatproof foam and attach the foam to the curtain panels. (Adhesive Backed) W1 5 Attach the front grille to the cabinet by inserting the tabs on the grille into the slots on the front top of the cabinet.
OPERATION EN Control Panel and Remote Control 5 Remote Control 6 1 7 7 2 3 4 3 2 4 1 NOTE • The feature may be changed according to the type of model. 1 Power Press to turn the air conditioner ON or OFF. 2 Fan Speed Press to set the Fan Speed to Low (F1), Medium (F2) or High (F3). 3 Delay ON/OFF Timer Delay ON - When the air conditioner is off, set it to automatically turn on from 1 to 24 hours later, at its previous mode and fan settings.
EN 5 Wi-Fi (Wi-Fi Model Only) Enables connection of the air conditioner to the home Wi-Fi. NOTE • Follow instructions on ThinQ application on how to connect to your unit. 6 Clean Filter The Clean Filter LED lights up to notify you that the filter needs to be cleaned. After cleaning the filter, press Temp and together on the control panel to turn off the Clean Filter light. Wireless Remote Control Inserting Batteries 1 Push out the cover on the back of the remote control with your thumb.
EN Air Direction Additional Features Airflow can be adjusted by changing the direction of the air conditioner’s louvers. Slinger Fan Adjusting Horizontal Airflow Direction The horizontal airflow is adjusted by moving the levers of the vertical louvers to the left or right. This air conditioner is equipped with a slinger fan. (See drawing.) The fan’s outer ring picks up the condensed water from the base pan if the water level gets high enough.
SMART FUNCTIONS LG ThinQ Application This feature is only available on models with the b or ThinQ logo The LG ThinQ application allows you to communicate with the appliance using a smartphone. EN 3 Connect your smartphone to the wireless router. LG ThinQ Application Features Communicate with the appliance from a smartphone using the convenient smart features. Smart Diagnosis If you experience a problem while using the appliance,this smart diagnosis feature will help you diagnose the problem.
EN Installing the LG ThinQ Application Using LG ThinQ to Diagnose Issues Search for the LG ThinQ application from the Google Play Store or Apple App Store on a smartphone. Follow instructions to download and install the application. If you experience a problem with your Wi-Fi equipped appliance, it can transmit troubleshooting data to a smartphone using the LG ThinQ application. • Launch the LG ThinQ application and select the Smart Diagnosis feature in the menu.
EN FCC Notice This following notice cover the transmitter module contained in this product. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
MAINTENANCE WARNING • Before cleaning or performing maintenance, disconnect the power supply and wait until the fan stops. Air Filter EN Cleaning the Air Conditioner • Wipe the front grille and inlet grille with a cloth dampened in a mild detergent solution. • Wash the cabinet with mild soap or detergent and lukewarm water, then polish using liquid appliance wax. Check the air filter at least twice a month to see if cleaning is necessary.
TROUBLESHOOTING EN Before Calling for Service The appliance is equipped with an automatic error-monitoring system to detect and diagnose problems at an early stage. If the appliance does not function properly or does not function at all, check the following before you call for service. Normal Sounds You May Hear 1 2 5 4 3 1 High Pitched Chatter Today’s high efficiency compressors may have a high pitched chatter during the cooling cycle.
EN Problem Possible Causes & Corrective Action The air conditioner is unplugged. • Make sure the air conditioner plug is pushed completely into the outlet. The fuse is blown/circuit breaker is tripped. • Check the house fuse/circuit breaker box and replace the fuse or reset the breaker. Air conditioner does not start. Power failure. • If power failure occurs, turn the mode control to off. When power is restored, wait 3 minutes to restart the air conditioner to prevent tripping of the compressor overload.
EN Problem Possible Causes & Corrective Action Water drips Indoors. The air conditioner is not tilted to the outside. • For proper water disposal, make sure the air conditioner slants slightly from the cabinet front to the rear. Water collects in base pan. Moisture removed from air and drains into base pan. • This is normal for a short period in areas with little humidity; normal for a longer period in very humid areas. Air conditioner turns on and off rapidly. Noise when unit is cooling.
EN Problem Possible Causes & Corrective Action The password for the Wi-Fi network was entered incorrectly. • Delete your home Wi-Fi network and begin the registration process again. Mobile data for your smartphone is turned on. • Turn off the Mobile data of your smartphone before registering the appliance. Trouble connecting appliance and smartphone to Wi-Fi network. The wireless network name (SSID) is set incorrectly.
WARRANTY EN ARBITRATION NOTICE: THIS LIMITED WARRANTY CONTAINS AN ARBITRATION PROVISION THAT REQUIRES YOU AND LG TO RESOLVE DISPUTES BY BINDING ARBITRATION INSTEAD OF IN COURT, UNLESS YOU CHOOSE TO OPT OUT. IN ARBITRATION, CLASS ACTIONS AND JURY TRIALS ARE NOT PERMITTED. PLEASE SEE THE SECTION TITLED “PROCEDURE FOR RESOLVING DISPUTES” BELOW. WHAT THIS WARRANTY COVERS: LG Electronics U.S.A., Inc.
EN THIS WARRANTY IS IN LIEU OF ANY OTHER WARRANTY, EXPRESS OR IMPLIED, INCLUDING AND WITHOUT LIMITATION TO, ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TO THE EXTENT ANY IMPLIED WARRANTY IS REQUIRED BY LAW, THIS WARRANTY IS LIMITED IN DURATION TO THE TERM PERIOD EXPRESSED ABOVE. REPAIR OR REPLACEMENT AS PROVIDED UNDER THIS WARRANTY IS THE EXCLUSIVE REMEDY FOR THE CUSTOMER. NEITHER THE MANUFACTURER NOR ITS U.S.
EN PROCEDURE FOR RESOLVING DISPUTES: ALL DISPUTES BETWEEN YOU AND LG ARISING OUT OF OR RELATING IN ANY WAY TO THIS LIMITED WARRANTY OR THE PRODUCT SHALL BE RESOLVED EXCLUSIVELY THROUGH BINDING ARBITRATION, AND NOT IN A COURT OF GENERAL JURISDICTION. BINDING ARBITRATION MEANS THAT YOU AND LG ARE EACH WAIVING THE RIGHT TO A JURY TRIAL AND TO BRING OR PARTICIPATE IN A CLASS ACTION. Definitions. For the purposes of this section, references to “LG” mean LG Electronics U.S.A., Inc.
EN Fees/Costs. You do not need to pay any fee to begin an arbitration. Upon receipt of your written demand for arbitration, LG will promptly pay all arbitration filing fees to the AAA unless you seek more than $25,000 in damages, in which case the payment of these fees will be governed by the AAA Rules. Except as otherwise provided for herein, LG will pay all AAA filing, administration and arbitrator fees for any arbitration initiated in accordance with the AAA Rules and this arbitration provision.
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