Installation Guide
Tools Needed:
- Vacuum pump
- Manifold gauge set
- Torque wrench
- Flaring tool
- Level
- Drill with core bit
- Refrigerant scale
Step-by-Step Installation
- Select Installation Location: Choose a location with proper clearances, away from heat sources, and with adequate drainage.
- Mount Indoor Unit: Install mounting plate securely on wall, ensuring proper leveling for condensate drainage.
- Drill Wall Hole: Create hole for refrigerant piping, drain hose, and electrical wiring between indoor and outdoor units.
- Connect Refrigerant Pipes: Connect copper pipes using flare connections, ensuring proper torque specifications.
- Connect Drain Hose: Install drain hose with proper slope for water drainage, using insulation to prevent condensation.
- Electrical Connection: Connect power supply according to local electrical codes and unit specifications.
- Vacuum and Charge: Evacuate system using vacuum pump, then charge with specified refrigerant amount.
- Test Operation: Test all functions including cooling, heating, fan speeds, and remote control operation.
Specifications
| Model Series | LS-Q186HV4 |
| Type | Wall Mounted Split System |
| Cooling Capacity | 18,000 BTU/h |
| Heating Capacity | 19,000 BTU/h |
| Power Supply | 220-240V, 50Hz, 1 Phase |
| Refrigerant Type | R-410A |
| Refrigerant Charge | 850g |
| Energy Rating | A++ (Cooling) / A+ (Heating) |
| Noise Level (Indoor) | 19-38 dB(A) |
| Noise Level (Outdoor) | 50 dB(A) |
| Dimensions Indoor (HxWxD) | 29.5 x 89.8 x 20.8 cm |
| Dimensions Outdoor (HxWxD) | 55.5 x 79.5 x 29.0 cm |
| Weight Indoor/Outdoor | 9.5 kg / 34 kg |
Warranty Information
- Compressor Warranty: 10 years
- Parts Warranty: 5 years
- Labor Warranty: 1 year
- Additional Coverage: Optional extended service plans available
For warranty service, contact LG Customer Service at 1-800-243-0000 or visit LG.com
Key Features
Dual Inverter Compressor
LG's advanced Dual Inverter Compressor provides precise temperature control, faster cooling/heating, and up to 70% energy savings compared to conventional compressors.
Plasma Air Purification
Built-in plasma air purification system removes up to 99.9% of bacteria, viruses, and allergens, providing cleaner and healthier indoor air quality.
Wi-Fi Smart Control
Connect to LG ThinQ app for remote control, scheduling, energy monitoring, and voice control compatibility with Google Assistant and Amazon Alexa.
4-Way Air Deflection
Multi-directional airflow system with automatic swing function ensures even temperature distribution throughout the room without cold/hot spots.
Auto Clean Function
Automatic cleaning function dries the indoor unit's heat exchanger to prevent mold and bacteria growth, maintaining optimal performance and air quality.
Low Ambient Operation
Advanced technology allows operation in extreme temperatures, with heating capability down to -25°C and cooling up to 52°C outdoor temperature.
Operation Modes
Cool Mode
Standard cooling operation with adjustable temperature from 18°C to 30°C
Heat Mode
Heating operation with temperature range from 16°C to 30°C
Dry Mode
Dehumidification function that removes excess moisture without overcooling
Fan Mode
Air circulation only with 4-speed fan control
Auto Mode
Automatic selection of cooling or heating based on room temperature
Energy Saving
Optimized operation for maximum energy efficiency
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit not starting | Power supply issue, remote control batteries dead | Check circuit breaker, replace remote batteries, ensure power switch is on |
| Poor cooling/heating | Dirty filters, low refrigerant, blocked airflow | Clean filters, check refrigerant charge, clear obstructions around units |
| Water leakage | Clogged drain pipe, improper installation slope | Clean drain pipe, ensure proper drainage slope |
| Unusual noises | Loose parts, debris in fan, vibration | Tighten mounting hardware, clean fan blades, check isolation |
| Frozen indoor unit | Dirty filters, low airflow, low refrigerant | Clean filters, check fan operation, verify refrigerant charge |
| Remote not working | Batteries dead, signal obstruction, distance too far | Replace batteries, ensure line of sight, stay within 7 meters |
Error Codes
- CH 01: Indoor unit PCB error - Check connections, replace if necessary
- CH 02: Communication error - Check wiring between indoor/outdoor units
- CH 03: Compressor error - Check compressor and inverter board
- CH 04: Fan motor error - Check indoor fan motor and connections
- CH 05: Outdoor temperature sensor error - Replace sensor
- CH 06: Refrigerant leak - Check for leaks and recharge system
- CH 07: Low refrigerant pressure - Check for leaks, add refrigerant
- CH 08: High refrigerant pressure - Check airflow, clean coils
Manual Downloads
Current Model Manuals
LS-Q186HV4
18K BTU Dual Inverter AC
LS-Q246HV4
24K BTU Dual Inverter AC
LS-Q126HV4
12K BTU Dual Inverter AC
LS-Q096HV4
9K BTU Dual Inverter AC
Popular Previous Models
LS-Q186EN4
18K BTU Inverter AC
LS-Q246EN4
24K BTU Inverter AC
LS-Q126EN4
12K BTU Inverter AC
LS-Q096EN4
9K BTU Inverter AC