LSN5ER3S - Air conditioner LG - Free user manual and instructions
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| Product Type | Split System Air Conditioner |
| Cooling Capacity | 5.0 kW (17,000 BTU/h) |
| Heating Capacity | 5.5 kW (18,800 BTU/h) |
| Energy Efficiency Class (Cooling) | A++ |
| Energy Efficiency Class (Heating) | A+ |
| Indoor Unit Dimensions (WxHxD) | 998 x 345 x 210 mm |
| Outdoor Unit Dimensions (WxHxD) | 770 x 545 x 288 mm |
| Indoor Unit Weight | 12.5 kg |
| Outdoor Unit Weight | 33.5 kg |
| Power Supply | 220-240 V, 50 Hz, 1 Ph |
| Refrigerant | R32 |
| Main Functions | Cooling, Heating, Dehumidification, Fan, Auto, Sleep, Timer |
| Airflow Rate (Indoor) | Up to 12 m³/min |
| Noise Level (Indoor, Low/High) | 25 / 45 dB(A) |
| Noise Level (Outdoor) | 52 dB(A) |
| Filter Type | Washable, Anti-Bacterial |
| Maintenance | Clean filter every 2 weeks; professional service annually |
| Safety Features | Auto Restart, Overload Protection, Self-Diagnosis |
| Spare Parts Availability | Original LG parts via authorized service centers |
| Repairability Index | 7.5 / 10 |
| Compatible with LG ThinQ | Yes (Wi-Fi optional) |
Frequently Asked Questions - LSN5ER3S LG
How often should I clean the air filter?
We recommend cleaning the air filter every 2 weeks under normal usage. A clogged filter reduces efficiency and airflow.
What does the 'Sleep Mode' do?
Sleep Mode gradually adjusts the temperature to maintain comfort while you sleep. It also reduces fan speed for quieter operation and can save energy.
How do I set the timer on my LG air conditioner?
Press the Timer button on the remote control. Use the +/- buttons to set the desired on or off time. Confirm by pressing the Timer button again.
What does error code 'CH05' mean?
Error code CH05 indicates a defective outdoor unit sensor. Contact LG service for a technician to replace the sensor.
Can I use the air conditioner without the remote control?
Yes, you can use the manual control button on the indoor unit. Press it to toggle modes or turn the unit on/off. However, remote control provides full functionality.
How do I switch between cooling and heating?
Press the Mode button on the remote control until you see the desired mode icon (snowflake for cooling, sun for heating). The unit will start operating in that mode.
What is the recommended temperature setting?
For cooling, set between 24-26°C for comfort and efficiency. For heating, 20-22°C is recommended.
Why is my air conditioner not cooling properly?
Possible causes: dirty filter, blocked outdoor unit, incorrect mode, or low refrigerant. Check and clean filter first. If issue persists, contact service.
How do I connect the unit to Wi-Fi?
Download the LG ThinQ app, follow the in-app instructions to connect your air conditioner. Ensure the unit is in Wi-Fi pairing mode (press and hold Wi-Fi button on remote for 3 seconds).
What is the SEER rating of this model?
The LG LSN5ER3S has a SEER rating of 6.2 (cooling) and SCOP of 4.0 (heating), making it highly energy efficient.
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USER MANUAL LSN5ER3S LG
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Product information
Brand : LG
Model : LSN5ER3S
Category : Air conditioner