LG Ceiling Cassette Air Conditioners Manual

The LG Ceiling Cassette Air Conditioners are high-efficiency cooling systems designed for commercial and residential spaces with suspended ceilings. These units feature multi-directional airflow, quiet operation, smart connectivity options, energy-saving modes, advanced filtration systems, and easy maintenance access. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Maintenance Procedures 8. Smart Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Ceiling cassette unit, remote control, air filters, condensate drain system, multi-directional louvers, LED display panel.

Feature	Description
Multi-directional airflow	4-way air discharge for even room cooling
Wi-Fi connectivity	Smart control via LG ThinQ app
Quiet operation	Low noise levels for comfortable environment
Energy saving mode	Auto energy adjustment based on room conditions
Air filtration system	Multi-stage filtration for clean air
Auto swing louvers	Automatic air direction adjustment
LED display panel	Status indicators and error codes
Self-diagnosis system	Automatic fault detection and reporting
Condensate pump	Automatic water removal system
Maintenance alert	Filter cleaning reminders

Installation

Professional installation recommended. Ensure proper ceiling support and clearance.

Ceiling preparation: Verify structural support for unit weight and dimensions.
Mounting: Secure cassette unit to ceiling structure using provided brackets.
Refrigerant lines: Connect copper pipes between indoor and outdoor units.
Electrical connection: Connect power supply according to local electrical codes.
Drainage system: Install condensate drain line with proper slope.

WARNING! Installation must be performed by qualified technicians only. Ensure proper electrical grounding.

First-Time Setup

Power on unit; follow initial setup procedure.

Remote control pairing: Point remote at unit and press POWER button.
Temperature calibration: Allow unit to run for 15 minutes for system stabilization.
Wi-Fi setup: Download LG ThinQ app and follow connection instructions.
Mode selection: Choose cooling, heating, fan, or auto mode as needed.
Timer settings: Configure on/off timers for energy efficiency.

CAUTION! Do not operate unit without proper refrigerant charge. Allow 10 minutes between power cycles.

Specifications

Cooling Capacity: 18,000 - 60,000 BTU/h (varies by model)
Heating Capacity: Available on heat pump models
Power Supply: 208-230V, 60Hz
Refrigerant: R410A
Noise Level: 25-45 dB (indoors)
Air Flow: Multi-directional, adjustable louvers
Dimensions: Standard 24"x24" or 24"x48" ceiling openings
Weight: 40-80 lbs depending on model
Operating Temp: Cooling: 64°F-90°F; Heating: 14°F-75°F

Controls and Settings

Access controls via remote or unit panel. Remote: POWER, MODE, TEMP, FAN SPEED, TIMER, SWING, SLEEP.

Modes: COOL, HEAT, FAN, DRY, AUTO. Fan speeds: AUTO, LOW, MEDIUM, HIGH, TURBO.

Temperature range: 64°F-86°F. Timer: 1-24 hours. Swing: Auto or manual louver control. Sleep: Gradual temperature adjustment for comfort. Filter reset: Hold FILTER button for 3 seconds after cleaning.

Connecting Devices

Wi-Fi: Connect to home network via LG ThinQ app. Remote: Infrared control up to 26 feet.

Ensure unit is powered on and in standby mode.
Download LG ThinQ app from app store.
Follow in-app instructions to connect to Wi-Fi network.
Add device using model number and serial number.

Tip: Keep remote control batteries fresh for reliable operation.

Maintenance Procedures

Regular maintenance ensures optimal performance and longevity.

Filter cleaning: Remove and clean air filters every 2-4 weeks.
Condensate drain: Check and clear drain line quarterly.
Outdoor unit: Keep area around outdoor unit clear of debris.
Louver cleaning: Wipe louvers with soft, dry cloth.
Professional service: Schedule annual maintenance by qualified technician.
Winterization: For seasonal units, follow proper shutdown procedures.

WARNING! Always disconnect power before performing any maintenance. Do not use water on electrical components.

Smart Features

LG ThinQ app: Remote control, scheduling, energy monitoring, diagnostics. Voice control: Compatible with Google Assistant and Amazon Alexa.

Care & Cleaning

Disconnect power before cleaning. Use soft, dry cloth for exterior surfaces. Clean filters with vacuum or mild detergent.

CAUTION! Do not use abrasive cleaners or solvents. Never spray water directly into unit.

Regulatory Information

UL/ETL certified for safety standards. EPA compliance for refrigerant handling. Energy Star certified models available. Copyright © 2024 LG Electronics; all rights reserved. For support, visit www.lg.com or contact 1-800-243-0000.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Unit not cooling	Dirty filters/thermostat	Clean filters; check temperature setting; ensure outdoor unit is running.
Water leakage	Clogged drain line	Clear condensate drain line; check drain pan.
Unusual noise	Loose parts/fan issue	Check for loose panels; inspect fan blades; call for service.
Remote not working	Batteries/obstructions	Replace batteries; ensure clear line of sight to unit.
Error code displayed	System fault	Refer to error code chart in manual; contact service if persistent.

Reset: Turn off power for 10 minutes, then restart.

Service: 1-800-243-0000; www.lg.com