LG LWG07-Series Air Conditioner

When the air conditioner has been performing its cooling operation and is then turned off or set to the fan position, you must wait at least 3 minutes before resetting to the cooling operation again. This precaution also applies after a power failure to prevent the compressor from overloading. Ignoring this warning could cause damage to the unit. (Pages 7, 19)

Ice may block airflow and prevent the unit from properly cooling the room. Set the fan to MED or HIGH while setting the thermostat to 1 or 2 until the ice melts. Possible causes include a dirty air filter or cold air escaping into the room. (Page 17)

For normal cooling, turn the Operation Knob to the High Cool setting and set the Thermostat control to the desired temperature mark, with the mid-point being a good starting position. The 5 or 6 position on the thermostat is the recommended setting for average conditions. If the room temperature is not satisfactory after a reasonable time, adjust the control to a cooler or warmer setting as appropriate. (Page 6)

The thermostat can be set between 16°C and 30°C (61°F to 81°F) using the remote control. The unit takes an average of 30 minutes to adjust the room temperature by 1°C (1.8°F). When using the On/Off Timer, temperature increases only by 2°C and will no longer increase thereafter. (Page 8)

In the event of a power failure, set the power control to OFF. When the power is restored, wait 3 minutes before restarting the air conditioner to prevent the compressor from overloading. The unit also features Auto Restart, which automatically returns the unit to its previous operating conditions when power is restored. (Page 17)

Use water and mild detergent when cleaning the grille and case. Do not use bleach or harsh abrasives, as these can deteriorate the appearance by changing the product color or scratching its surface. Always turn the power off and unplug the unit before cleaning. (Page 9)

The remote control requires two new AAA 1.5V batteries. Do not use rechargeable batteries, and make sure both batteries are new. To prevent discharge, remove the batteries from the remote control if the air conditioner will not be used for an extended period of time. (Page 8)

Before cleaning the unit, make sure the power and circuit breaker are both turned off, as the fan rotates at very high speed during operation and could cause injury if accidentally activated. Do not touch the metal parts of the unit when removing the filter, as the sharp edges can cause injury. Never use water to clean the inside of the air conditioner, as it can destroy the insulation and lead to electric shock. (Pages 4–5)

The air filter should be checked and cleaned at least every 2 weeks, or more often when necessary. To clean it, remove the filter and wash it with warm soapy water kept below 40°C (104°F), then rinse, gently shake off excess water, and allow it to dry completely before reinstalling. Operating the unit without a clean filter can cause malfunctions. (Page 12)

Several issues can cause poor cooling: the thermostat may not be set cold enough, the air filter may be dirty, airflow may be restricted by furniture or curtains, or cold air may be escaping through open gaps. Additionally, frost on the cooling coils can block airflow — if this occurs, set the fan to Medium or High and the thermostat to 1 or 2 until the frost melts. (Page 20)

After a power failure, place the operation switch in the OFF position. When power is restored, wait at least 3 minutes before turning the air conditioner back on to avoid overloading the compressor. The unit may also be equipped with an Auto Restart switch that automatically restores the previous settings when power returns. (Page 20)

A clicking sound from the thermostat is completely normal operation. It is caused by the compressor cycling on and off to maintain the set room temperature. This is not an indication of a malfunction. (Page 20)

Yes, water dripping from the back of the unit is normal, especially in high humidity or rainy conditions. Water is collected in the base pan and overflows out the back of the unit. A whistling sound may also accompany this, as moisture is collected by the condenser to help improve cooling efficiency. (Page 20)

Push the rear cover of the remote control outward with your thumb, then insert two new AAA 1.5V batteries with the correct polarity alignment, and replace the cover. Do not use rechargeable batteries, and make sure both batteries are new. Remove the batteries if the air conditioner will not be used for an extended period to avoid leakage. (Page 11)

The thermostat on the remote control can be adjusted between 16°C and 30°C (61°F to 81°F). Keep in mind that the unit needs an average of 30 minutes to adjust the room temperature by 1°C (1.8°F). For normal conditions, a mid-range setting (positions 5 or 6) is recommended. (Page 11)

Before cleaning, always disconnect the unit from power and ensure the circuit breaker is also turned off, since the fan spins at very high speeds and could cause injury if accidentally started. Never use water to clean the interior of the unit, as it can damage insulation and cause electric shock. Do not touch metal parts when removing the filter, as sharp edges can cause cuts. (Pages 5–6)

The unit must be installed with a slight outward tilt of approximately 3 degrees (about 10 to 15 mm, or a quarter-bubble on a level) to allow condensation water to drain properly. There must be at least 50 cm (20 inches) of clear space behind the unit to ensure adequate airflow, and the unit should be kept out of direct sunlight. (Page 15)

You must wait at least 3 minutes before switching the unit back to a cooling setting after it has been turned off or set to fan mode. Failing to wait can cause an overload on the compressor. This applies whether you are using the manual controls or the remote control. (Pages 8–9)

The air filter should be checked and cleaned at least once every 2 weeks to maintain optimal performance. To clean it, remove the filter and wash it with warm, soapy water below 40°C (104°F), rinse it off, gently shake off excess water, and let it dry before replacing it. Operating without filters may cause failure of the unit. (Page 12)

In the event of a power failure, set the power control to OFF. When power is restored, wait 3 minutes before restarting the air conditioner to prevent the compressor from overloading. The unit also features Auto Restart, which automatically returns the unit to its previous operating conditions when power is restored. (Page 19)

Ice may form on the cooling coils and block airflow, preventing the unit from properly cooling the room. To fix this, set the fan to MED or HIGH while setting the thermostat to 1 or 2 until the ice melts. A dirty air filter can also contribute to this problem, so ensure the filter is cleaned at least every 2 weeks. (Page 19)

A pinging noise is a normal operational sound caused by water being picked up by the condenser on rainy days or in highly humid conditions. This feature is designed to help remove moisture from the air and improve cooling efficiency. No action is required when you hear this sound. (Page 19)

Push out the cover on the back of the remote control with your thumb, then insert two new AAA 1.5V batteries while paying attention to polarity, and reattach the cover. Do not use rechargeable batteries, and make sure both batteries are new. To prevent discharge, remove the batteries if the air conditioner will not be used for an extended period of time. (Page 10)

The unit should be installed with a slight tilt towards the outside of approximately 3° (about 10–15mm, or a 1/4 bubble with a level) to allow condensed water to drain properly. Improper tilting could lead to water buildup inside the unit. The housing should also slope down towards the rear by about 5mm for the same reason. (Page 15)

For normal cooling, select High Cool or Med Cool with the thermostat knob set at the midpoint, which is position 5 or 6. For maximum cooling, select High Cool with the thermostat turned to the highest available number. For quieter or nighttime cooling, select Low Cool with the thermostat at the midpoint. (Page 7)

No, you should never use water to clean the inside of the air conditioner, as water may enter the unit and degrade the insulation, potentially causing electric shock. For the grille and case, use water and mild detergent on the exterior only, avoiding bleach or harsh abrasives. Always turn off the power and unplug the unit before cleaning. (Pages 4, 11)

Several issues can reduce cooling performance, including restricted airflow from curtains or furniture blocking the unit, a dirty air filter, or the thermostat not being set cool enough. You should also close the vent for maximum cooling efficiency, as opening it allows internal air to escape. If the unit was just turned on, allow some time for the room temperature to adjust. (Page 19)

Always perform grounding work, as lack of grounding may cause electric shock, and install an air leakage breaker with a dedicated switching board. Never operate the unit with wet hands, in a damp environment, or by plugging and unplugging the power cord to start and stop it. If strange sounds, smell, or smoke come from the unit, unplug it immediately, and contact an authorized service technician for any repairs or maintenance. (Pages 3, 5)