Introduction
This manual provides detailed instructions for the installation, operation, maintenance, and troubleshooting of your LG 1.5 Ton 5 Star DUAL Inverter Split AC. Please read this manual thoroughly before operating your air conditioner and retain it for future reference. Your LG AC is designed for optimal cooling performance, energy efficiency, and enhanced air quality.

Image: The LG DUAL Inverter Split AC indoor unit, highlighting its key features like AI Convertible 6-in-1 cooling modes, Dual Inverter Compressor for efficient operation, and Diet Mode+ for energy saving.
Product Overview and Key Features
The LG DUAL Inverter Split AC is equipped with advanced technologies to provide superior cooling and comfort. Key features include:
- Dual Inverter Compressor: Ensures faster cooling, energy efficiency, and quieter operation.
- AI Convertible 6-in-1 Cooling: Offers six different cooling modes to customize comfort and optimize energy consumption based on occupancy and activity levels.
- VIRAAT Mode: Provides up to 116% increased cooling capacity for instant comfort in extremely hot conditions.
- Diet Mode+: Significantly reduces power consumption, allowing the AC to operate at as low as 252W.
- HD Filter with Anti-Virus Protection: A special coating inactivates and destroys viruses and bacteria, ensuring cleaner air.
- 4 Way Swing: Ensures uniform airflow throughout the room for consistent cooling.
- Ocean Black Protection & Gold Fin+: Enhances durability and protects against rust and corrosion, especially in challenging environments.
- Stabilizer Free Operation: Designed to operate reliably within a voltage range of 120V-290V.
- Smart Diagnosis System: Facilitates quick and easy troubleshooting.

Image: An infographic illustrating various features of the LG AC, including customized cooling with AI, convenience and efficiency with 6-in-1 modes, VIRAAT mode for high capacity, Diet Mode+ for energy saving, ability to cool at 55°C, GoldFin+ and Ocean Black Protection for durability, and low annual energy consumption.

Image: A diagram explaining the AI Dual Inverter system, detailing components like the Dual Rotary Compressor, AI Convertible technology, VIRAAT Mode, 4 Way Swing, and ADC Sensors, all working together to sense lifestyle and optimize cooling.
Setup and Installation
Unboxing and Included Components
Upon receiving your LG Split AC, carefully unbox all components. Ensure the following items are present:
- 1 Indoor Unit
- 1 Outdoor Unit
- 1 Remote Control
- 2 Batteries for Remote Control
- Inter Connecting Copper Pipe (3 meters length)
- User Manual (this document)
- Warranty Card
- Communication wire
- Small Accessories (e.g., drain pipe, wall mounting brackets, insulation tape - may vary)

Image: A visual representation of all items typically included in your LG AC package, such as the indoor and outdoor units, remote control with batteries, copper piping, communication wire, and other small installation accessories.
Installation Guidelines
For safe and optimal performance, professional installation is highly recommended. Ensure the installation area is suitable for both indoor and outdoor units, considering proper air circulation and drainage. The indoor unit dimensions are approximately 99.8 cm (W) x 34.5 cm (H) x 21 cm (D), and the outdoor unit dimensions are 77.0 cm (W) x 54.5 cm (H) x 28.8 cm (D).

Image: A detailed diagram providing the precise measurements of both the indoor and outdoor units of the LG Split AC, crucial for planning installation space.
Key considerations for installation:
- Location: Choose a location that allows for efficient airflow and easy access for maintenance.
- Drainage: Ensure proper drainage for condensate water. An additional drain pipe may be required depending on the installation setup.
- Electrical Connection: The unit operates on 230 Volts. Ensure a dedicated power outlet with appropriate earthing is available. A plug may need to be purchased separately if not included.
- Copper Piping: The included copper pipe is 3 meters long. If a longer distance is required between units, additional copper piping will be needed.
- Wall Mount: For the outdoor unit, a sturdy wall mount is advised to reduce vibration and ensure safety.
Initial Power On
After professional installation is complete and all connections are secure, you may power on the unit. Insert the provided batteries into the remote control. The AC is designed for stabilizer-free operation within a voltage range of 120V-290V.
Operating Your LG AC
Remote Control Functions
The remote control allows you to access all functions of your LG AC. Familiarize yourself with the buttons for mode selection, temperature adjustment, fan speed, swing, and special features.
Cooling Modes and Features
Your LG AC offers various modes for customized comfort and energy saving:
- AI Convertible 6-in-1 Cooling: This feature allows you to adjust the cooling capacity from 40% to 116% based on your needs.

Image: An illustration of the AI Convertible 6-in-1 cooling modes, demonstrating how the AC can be adjusted from 100% capacity for crowded rooms to 40% for fewer people, and including AI+ and VIRAAT modes for intelligent and maximum cooling.
- VIRAAT Mode: Activate this mode for maximum cooling capacity (up to 116%) when rapid cooling is desired, especially in very hot conditions.

Image: The LG AC unit with a prominent display of 'VIRAAT Mode', signifying its ability to increase cooling capacity up to 116% for instant and maximum user comfort.
- Diet Mode+: For significant energy savings, engage Diet Mode+. This mode can reduce power consumption to as low as 252W.

Image: A visual demonstrating the 'Diet Mode+' feature of the LG AC, which helps in reducing electricity bills by consuming as little as 252W, illustrated with a power consumption comparison graph.
- 4 Way Swing: Activate the 4-way swing function for uniform air distribution across the room.

Image: The LG AC unit with arrows illustrating its 4 Way Swing capability, which ensures uniform airflow and multi-way air distribution throughout the room for consistent cooling.
- Monsoon Comfort/Fresh Dry: This mode is specifically designed for humid conditions, providing comfortable cooling while managing humidity levels.
- Mute Function: For silent operation, especially during sleep, use the mute function.
Temperature Control
Adjust the desired temperature using the up and down arrows on the remote. The AC is engineered to cool effectively even at ambient temperatures up to 55°C.

Image: The LG AC unit with a clear indication that it is engineered to cool effectively even in extreme ambient temperatures up to 55°C, ensuring comfort in harsh climates.
Maintenance
Regular maintenance ensures the longevity and efficient operation of your LG AC.
Filter Cleaning
The HD Filter with Anti-Virus Protection should be cleaned regularly to maintain air quality and cooling efficiency. Refer to the specific instructions in the full user manual for filter removal and cleaning procedures. The EZ Clean Filter design makes this process simpler.

Image: A step-by-step diagram illustrating how the HD Filter with Anti-Virus Protection works, showing the interaction of cationic silver ions with microorganisms to inactivate and destroy viruses and bacteria, providing clean air.
Auto Clean Function
Utilize the Auto Clean function to prevent the growth of mold and bacteria within the indoor unit's heat exchanger, ensuring healthier air and maintaining hygiene.
General Care
The AC features Gold Fin+ and Ocean Black Protection on its copper condenser coil, which increases durability and prevents rust and corrosion. While these features enhance longevity, periodic professional servicing is recommended to ensure optimal performance and address any potential issues like low gas detection.

Image: A close-up view of Hi-Grooved Copper pipes, highlighting their 100% copper composition which contributes to faster cooling and extended product lifespan.
Troubleshooting
If you encounter issues with your LG AC, refer to the following common troubleshooting tips. For more complex problems, contact customer support.
- No Power: Check if the unit is properly plugged in and if there's a power outage. Ensure the circuit breaker hasn't tripped.
- Insufficient Cooling: Verify that the temperature setting is appropriate. Clean the air filters if they are dirty. Ensure no obstructions are blocking the indoor or outdoor unit's airflow.
- Unusual Noises: Minor operational sounds are normal. If you hear loud or unusual noises, it may indicate a loose part or a more serious issue.
- Low Gas Detection: Your unit has a low gas detection feature. If this is indicated, it suggests a refrigerant leak or low refrigerant levels, requiring professional service.
- Smart Diagnosis System: Utilize the Smart Diagnosis System for quick identification of issues. This system can communicate with LG service centers for efficient troubleshooting.

Image: An internal view of the LG AC highlighting the ADC (Ambient, Discharge, Condenser) Sensors, which are crucial for ensuring stable performance and safety by monitoring various operational parameters.
Specifications
Detailed technical specifications for your LG DUAL Inverter Split AC (Model US-Q19YNZE):
| Feature | Specification |
|---|---|
| Brand | LG |
| Model | US-Q19YNZE |
| Capacity | 1.5 Tons |
| Energy Rating | 5 Star (ISEER Value: 5.20) |
| Annual Energy Consumption | 744.75 Kilowatt Hours Per Year |
| Noise Level (Indoor Unit) | 31 dB |
| Installation Type | Split System |
| Refrigerant Gas | R32 (Environment-Friendly) |
| Voltage | 230 Volts |
| Wattage | 252 Watts (Diet Mode+) |
| Indoor Unit Dimensions (WxHxD) | 99.8 x 34.5 x 21 cm |
| Outdoor Unit Dimensions (WxHxD) | 77.0 x 54.5 x 28.8 cm |
| Indoor Unit Weight | 11 kg |
| Outdoor Unit Weight | 28.5 kg |
| Material | OUTDOOR: GPSP/GP-DD, INDOOR: ABS/HIPS |
| Special Features | Inverter Compressor, Remote Controlled, 4 Way Swing, Sleep Mode, Auto Clean, AI Convertible 6-in-1, VIRAAT Mode, HD Filter with Anti-Virus Protection, ADC Sensor, Cools at 55°C, Stabilizer free operation (120V-290V), Magic Display, Low Gas Detection, Gold Fin+, Ocean Black Protection, Ez Clean Filter, 6 Fan Speed steps, Hi grooved Copper, Smart Diagnosis System, Comfort Air, Monsoon Comfort/Fresh Dry, Mute Function, On/Off Timer, Auto Restart, Dehumidifier, Diet Mode Plus. |

Image: The 5 Star Energy Rating label for the LG AC, along with a Power Savings Guide, detailing its ISEER value, cooling capacity, and annual energy consumption, confirming its high efficiency.
Warranty and Support
Warranty Information
Your LG DUAL Inverter Split AC comes with the following manufacturer's warranty:
- 1 Year Comprehensive Warranty on the Product.
- 5 Years Warranty on PCB and Motor.
- 10 Years Warranty on the Compressor.
*Free Gas charging during comprehensive period only. Terms and Conditions Apply.
Customer Support
For any service requests, technical assistance, or inquiries, please contact LG Electronics India Pvt. Ltd. directly:
- Telephone: 08069379999
- WhatsApp: 9711709999
- E-mail: serviceindia@lge.com
- Manufacturer Address: 51, Udyog Vihar, Gr. Noida (UP) – 201306, India