LG U24A Air Conditioner Instruction Manual

LG U24A Air Conditioner

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.
• Keep doors or windows closed tightly while you are operating the air conditioner.
• Adjust the direction of the air flow vertically or horizontally to circulate indoor air.
• Speed up the fan to cool or warm indoor air quickly, in a short period of time.
• Open windows regularly for ventilation as the indoor air quality may deteriorate if the air conditioner is used for many hours.
• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the air flow or weaken the cooling / dehumidifying functions.

For your records

Staple your receipt to this page in case you need it to prove the date of purchase or for warranty purposes. Write the model number and the serial number here:

• Model number: …………………………
• Serial number: …………………………

You can find them on a label on the side of each unit

• Dealer’s name: …………………………
• Date of purchase: …………………………

IMPORTANT SAFETY INSTRUCTIONS

READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.

Always comply with the following precautions to avoid dangerous situations and ensure peak performance of your product

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

• Installation or repairs made by unqualified persons can result in hazards to you and others.
• Installation of all field wiring and components MUST conform with local building codes or, in the absence of local codes, with the National Electrical Code 70 and the National Building Construction and Safety Code or Canadian Electrical code and National Building Code of Canada.
• The information contained in the manual is intended for use by a qualified service technician familiar with safety procedures and equipped with the proper tools and test instruments.
• Failure to carefully read and follow all instructions in this manual can result in equipment malfunction, property damage, personal injury and/or death.

Installation

• For installation of the product, always contact the service center or a professional installation agency. – Otherwise, it may cause a fire, electrical shock, explosion or injury.
• Securely attach the electrical part cover to the indoor unit and the service panel to the outdoor unit.
  • If the electrical part cover of the indoor unit and the service panel of the outdoor unit are not attached securely, it could result in a fire or electric shock due to dust, water, etc.
• Always install an air leakage breaker and a dedicated switching board. – No installation may cause a fire and electrical shock.
• Ensure that the installation frame of the outdoor unit is not damaged due to use for a long time.
  • It may cause injury or an accident.
• Do not disassemble or repair the product randomly. – It will cause a fire or electrical shock.
• Do not install the product at a place where there is a concern of falling down. – Otherwise, it may result in personal injury.
• Use caution when unpacking and installing. – Sharp edges may cause injury.
• Carry out the specified installation work after taking into account earthquakes. Failure to do so during installation work may result in the unit falling and causing accidents.
• Make sure that a separate power supply circuit is provided for this unit and that all electrical work is carried out by qualified personnel according to local laws and regulations and this installation manual. An insufficient power supply capacity or improper electrical construction may lead to electric shocks or fire.
• Be sure to switch off the unit before touching any electrical parts.
• Make sure that all wiring is secured, the specified wires are used, and that there is no strain on the terminal connections or wires.

Operation

• Unplug the unit if strange sounds, smell, or smoke comes from it. – Otherwise, it may cause electrical shock or a fire.
• Keep the flames away. – Otherwise, it may cause a fire.
• Take the power plug out if necessary, holding the head of the plug and do not touch it with wet hands. – Otherwise, it may cause a fire or electrical shock.
• Do not open the suction inlet of the indoor/outdoor unit during operation. – Otherwise, it may electrical shock and failure.
• Do not allow water to run into electrical parts. – Otherwise, it may cause the failure of machine or electrical shock.
• Never touch the metal parts of the unit when removing the filter. – They are sharp and may cause injury.
• When the product is submerged into water, always contact the service center. – Otherwise, it may cause a fire or electrical shock.
• Take care so that children may not step on the outdoor unit. – Otherwise, children may be seriously injured due to falling down.

CAUTION

Installation

• Install the product so that the noise or hot wind from the outdoor unit may not cause any damage to the neighbors. – Otherwise, it may cause dispute with the neighbors.
• Keep level parallel in installing the product. – Otherwise, it may cause vibration or water leakage.
• Do not install the unit in potentially explosive atmospheres.

Operation

• Use a soft cloth to clean. Do not use wax, thinner, or a strong detergent. – The appearance of the air conditioner may deteriorate, change color, or develop surface flaws.
• Do not use an appliance for special purposes such as preserving animals vegetables, precision machine, or art articles. – Otherwise, it may damage your properties.
• Do not place obstacles around the flow inlet or outlet. – Otherwise, it may cause the failure of appliance or an accident.

Accessories

Tools Required for Installation

• Ø 1/8’’ (ø3.2mm) drill
• Electric drill
• Screw Driver
• Nippers

Installation Procedure [U18A]

WARNING: Be sure to check that the power supply of the product is turned off.

CAUTION: Wear protective gloves at the time of installation.

1. Separate the Panels in the following order.

• Separate the Cover, Top by removing Screws.
• Separate the Panel, Front by removing Screws.

1. Remove the 2 Screws in the Motor, Mount.
2. Raise the Motor Mount. Then insert the Drain Pan Heater.
   • After inserting the Drain Pan Heater, tighten all the screws.
3. Use the brackets to secure the Heater to the Base Pan. please secure them like the picture below by using included screws.
   • NOTE: The direction of the Bracket should be as shown in the picture below.
4. Pass the Drain Pan Heater wire through the Barrier and fix it. Please secure the wire like the picture below. (After working, make sure that a bush is not separated. Don’t let the wire touch sharp edge. Using the tie wrap and the insulator, secure the drain pan heater wire so that it doesn’t touch the pipe.)
   • NOTE
   • The right-hand side heater wire must pass through the barrier as shown in the picture below Otherwise Outdoor Fan may touch with Lead wire.
   • Wrong wiring may cause fire, malfunction or damage to the machine.
   • Use caution when installing. Sharp edges may cause injury
5. Connect the Drain Pan Heater wire to PCBA (CN-HEATER)
   • NOTE: If you try to find the connecting parts on PCB, refer to the circuit diagram in each model.
6. Install each panel to the original position.
   • NOTE
   1. Please make sure to use all necessary screws, If you don’t, it may cause noise.
   2. Please use the enclosed extra screws if you lose any original screws.
7. If the Panel is assembled, please attach below the labels as shown in the picture.

Installation Check(Electric test of the product)

1. Check the following before powering on the unit.
2. Check whether the drain pan heater has been properly installed, wiring has been properly performed, and the removed components have been returned to the original positions.
3. Check the insulation resistance of the drain pan heater.

  * Use the tester (500 VDC) to check that the insulation resistance between L1 terminal and the ground terminal and between L2 terminal and the ground terminal is equal to or higher than 100MΩ
3. Check the continuity of the outdoor unit.
  * Use the tester to check that the continuity between the screw on the front panel and the ground terminal reads 0Ω
  * When there is no continuity, retighten the screws securing the front panel and the bottom frame to increase the area of contact with the screw. Then, carry out the continuity test again

2. Check the following before powering on the unit.
3. 1. Make sure that the wire is not touched by the fan.
4. Make sure that all of the Panel is assembled completely

    * (If you don’t, it may cause noise and vibration.)
  3. Make sure that Connector of the heater is connected with the specified plug.
    * (If you don’t, it may cause malfunction)

3. Operate the product and then check up on the product to work well.
4. After turning on the power, please check up on the product to work well.
5. Touch the bottom of the outdoor unit by hand and check the temperature.

  * (If the outdoor temperature is higher than 0°C(32°F), the heater won’t work; this is a safety precaution, not a failure.)

Pipes and wires should be purchased separately for installation of the product.

Installation Procedure [U24A]

WARNING: Be sure to check that the power supply of the product is turned off.

CAUTION: Wear protective gloves at the time of installation.

1. Separate the Panels in the following order.

• Separate the Cover, Top by removing Screws.
• Separate the Panel, Front by removing Screws.

1. Remove the 3 Screws in the Motor, Mount.
2. Raise the Motor Mount. Then insert the Drain Pan Heater.
   • After inserting the Drain Pan Heater, tighten all the screws.
3. Use the brackets to secure the Heater to the Base Pan. please secure them like the picture below by using included screws.
   • NOTE: The direction of the Bracket should be as shown in the picture below.
4. Pass the Drain Pan Heater wire through the Barrier and fix it. Please secure the wire like the picture below. (After working, make sure that a bush is not separated. Don’t let the wire touch sharp edge.)
   • NOTE
   1. The right-hand side heater wire must pass through the barrier as shown in the picture below Otherwise Outdoor Fan may touch with Lead wire.
   2. Wrong wiring may cause fire, malfunction or damage to the machine.
   3. Use caution when installing. Sharp edges may cause injury.
5. Connect the Drain Pan Heater wire to PCBA (CN-HEATER)
   • NOTE: If you try to find the connecting parts on PCB, refer to the circuit diagram in each model.
6. Install each panel to the original position
   • NOTE
   1. Please make sure to use all necessary screws, If you don’t, it may cause noise.
   2. Please use the enclosed extra screws if you lose any original screws.
7. If the Panel is assembled, please attach below the labels as shown in the picture.

Installation Check(Electric test of the product)

1. 1. Check the following before powering on the unit.
2. Check whether the drain pan heater has been properly installed, wiring has been properly performed, and the removed components have been returned to the original positions.
3. Check the insulation resistance of the drain pan heater.

  * Use the tester (500 VDC) to check that the insulation resistance between L1 terminal and the ground terminal and between L2 terminal and the ground terminal is equal to or higher than 100MΩ
3. Check the continuity of the outdoor unit.
  * Use the tester to check that the continuity between the screw on the front panel and the ground terminal reads 0Ω
  * When there is no continuity, retighten the screws securing the front panel and the bottom frame to increase the area of contact with the screw. Then, carry out the continuity test again

2. Check the following before powering on the unit.
3. Make sure that the wire is not touched by the fan.
4. Make sure that all of the Panel is assembled completely

  * (If you don’t, it may cause noise and vibration.)
3. Make sure that Connector of the heater is connected with the specified plug.
  * (If you don’t, it may cause malfunction)

3. 3. Operate the product and then check up on the product to work well.
4. After turning on the power, please check up on the product to work well.
5. Touch the bottom of the outdoor unit by hand and check the temperature.

  * (If the outdoor temperature is higher than 0°C(32°F), the heater won’t work; this is a safety precaution, not a failure.)

Pipes and wires should be purchased separately for installation of the product.

Copyright © 2017 – 2020 LG Electronics Inc. All Rights Reserved.

MFL67797611
Rev.00_012221

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