Installation Guide
Tools Needed:
- Vacuum pump
- Manifold gauge set
- Torque wrench
- Pipe cutter
- Flaring tool
- Level
- Drill with hole saw
Step-by-Step Installation
- Choose Installation Location: Select a location with proper clearances from walls and ceilings, ensuring good air circulation and accessibility for maintenance.
- Mount Indoor Unit: Install mounting plate securely on wall, ensuring it is level. Hang indoor unit on the plate.
- Install Outdoor Unit: Place outdoor unit on stable, level surface with proper vibration isolation and adequate clearance for airflow.
- Connect Refrigerant Pipes: Connect copper pipes between indoor and outdoor units using proper flaring techniques and torque specifications.
- Connect Drain Hose: Route drain hose with proper slope to ensure condensate water drainage away from the building.
- Electrical Connection: Connect to proper power supply according to local electrical codes. Ensure proper grounding.
- Vacuum and Charge: Evacuate system using vacuum pump, then charge with specified refrigerant type and quantity.
- Test Run: Run system through complete operation cycle to check for leaks and proper cooling/heating performance.
Specifications
| Model Series | LS120HV |
| Type | Wall Mounted Mini Split |
| Color | White |
| Cooling Capacity | 12,000 BTU/h |
| Heating Capacity | 13,000 BTU/h |
| Noise Level (Indoor) | 19 dB (Quiet Mode) |
| Control Type | Remote Control with LED Display |
| Energy Rating | A++ (High Efficiency) |
| Refrigerant | R32 |
| Power Requirements | 230V, 50Hz, 15A |
| Dimensions Indoor (HxWxD) | 29 x 80 x 21 cm |
| Dimensions Outdoor (HxWxD) | 55 x 76 x 29 cm |
| Operating Temperature Range | -15°C to 46°C |
Warranty Information
- Full Warranty: 2 years parts and labor
- Compressor Warranty: 5 years on inverter compressor
- Additional Coverage: Optional extended warranty 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, and up to 70% energy savings compared to conventional compressors.
Wi-Fi Smart Control
Control your AC remotely using the LG ThinQ app, set schedules, monitor energy usage, and receive maintenance alerts from your smartphone.
Quiet Operation
Advanced noise reduction technology ensures whisper-quiet operation as low as 19 dB, making it ideal for bedrooms and quiet spaces.
4-Way Air Deflection
Multi-directional airflow system ensures even temperature distribution throughout the room with customizable air direction settings.
Auto Clean Function
Automatically dries the indoor unit after use to prevent mold and bacteria growth, maintaining clean air and optimal performance.
Energy Saving Mode
Intelligent energy saving mode optimizes operation to reduce power consumption while maintaining comfort levels.
Operating Modes
Cooling Mode
Standard air conditioning mode for hot weather with adjustable temperature and fan speed
Heating Mode
Efficient heat pump operation for cold weather with rapid warm-up capability
Dry Mode
Dehumidification function to reduce humidity while maintaining comfortable temperature
Fan Mode
Circulates air without cooling or heating, with multiple fan speed options
Auto Mode
Automatically selects cooling or heating based on room temperature
Sleep Mode
Quiet operation with gradual temperature adjustment for comfortable sleeping
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit not starting | Power issue, remote control batteries dead, safety lock activated | Check power supply, replace remote batteries, check safety settings |
| Poor cooling/heating | Dirty filters, low refrigerant, blocked airflow | Clean filters, check for refrigerant leaks, ensure proper airflow |
| Water leaking indoors | Clogged drain pipe, improper installation, frozen evaporator | Clear drain pipe, check installation slope, defrost system |
| Unusual noises | Loose parts, debris in fan, compressor issues | Tighten components, clean fan blades, contact service if compressor noise |
| Frozen coils | Dirty filters, low refrigerant, faulty fan motor | Clean filters, check refrigerant charge, inspect fan operation |
| Remote not working | Dead batteries, signal obstruction, remote damage | Replace batteries, ensure clear line of sight, test remote |
Error Codes
- CH/OJ: Communication error - Check wiring between indoor and outdoor units
- E1/E2: Temperature sensor error - Check indoor/outdoor temperature sensors
- F1/F2: Coil temperature sensor error - Check evaporator/condenser sensors
- P1/P4: High/low pressure error - Check refrigerant pressure and charge
- U3/U4: Power supply error - Check voltage and power connections
- L5: Inverter compressor error - Contact service center
Manual Downloads
Current Model Manuals
LS120HV
12,000 BTU Inverter V Mini Split
LS180HV
18,000 BTU Inverter V Mini Split
LS240HV
24,000 BTU Inverter V Mini Split
LS090HV
9,000 BTU Inverter V Mini Split
Popular Previous Models
LS120HM
12,000 BTU Standard Mini Split
LS180HM
18,000 BTU Standard Mini Split
LS090HN
9,000 BTU Basic Mini Split
LS240HQ
24,000 BTU Quiet Mini Split