USER MANUAL AK-H1208C02 LG
Please read this manual carefully before operating your set and retain it for future reference.
SINGLE PACKAGE TYPE AIR CONDITIONER
TABLE OF CONTENTS
Safety Precautions ....3
Prior to Operation......6
Operating Instructions......7
Care and Maintenance .....25
Before You Call for Service....27
FOR YOUR RECORDS
Write the model and serial numbers here:
Model #
Serial #
You can find them on a label on the side of each unit.
Dealer's Name
Date Purchased
Staple your receipt to this page in the event you need it to prove date of purchase or for warranty issues.
READ THIS MANUAL
Inside you will find many helpful hints on how to use and maintain your air conditioner properly. Just a little preventive care on your part can save you a great deal of time and money over the life of your air conditioner.
You'll find many answers to common problems in the chart of troubleshooting tips. If you review our chart of
Troubleshooting Tips first, you may not need to call for service at all.
PRECAUTION
- Contact the authorized service technician for repair or maintenance of this unit.
- Contact the installer for installation of this unit.
- The air conditioner is not intended for use by young children or invalids without supervision.
- Young children should be supervised to ensure that they do not play with the air conditioner.
- When the power cord is to be replaced, replacement work shall be performed by authorized personnel only using only genuine replacement parts.
- Installation work must be performed in accordance with the National Electric Code by qualified and authorized personnel only.
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must be followed.
Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.
WARNING
This symbol indicates the possibility of death or serious injury.
CAUTION
This symbol indicates the possibility of injury or damage.
■ Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
WARNING
■ Installation
Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit.
- There is risk of fire or electric shock.
Install the panel and the cover of control box securely.
- There is risk of fire or electric shock.
Use the specified wires to connect the unit.
- There is risk of fire or electric shock.
For installation, always contact the dealer or an Authorized Service Center.
- There is risk of fire, electric shock, explosion, or injury.
For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized Service Center.
- Do not disassemble or repair the product. There is risk of fire or electric shock.
Always install a dedicated circuit and breaker.
- Improper wiring or installation may cause fire or electric shock.
Do not install, remove, or re-install the unit by yourself (customer).
- There is risk of fire, electric shock, explosion, or injury.
Do not install the product on a defective installation stand.
- It may cause injury, accident, or damage to the product.
Always ground the product.
• There is risk of fire or electric shock.
Use the correctly rated breaker or fuse.
• There is risk of fire or electric shock.
Be cautious when unpacking and installing the product.
- Sharp edges could cause injury. Be especially careful of the case edges and the fins on the condenser and evaporator.
Be sure the installation area does not deteriorate with age.
• If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury.
Operation
Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open.
- Moisture may condense and wet or damage furniture.
Take care to ensure that power cable could not be pulled out or damaged during operation.
- There is risk of fire or electric shock.
Do not place anything on the power cable.
- There is risk of fire or electric shock.
Do not plug or unplug the power supply plug during operation.
- There is risk of fire or electric shock.
Do not touch (operate) the product with wet hands.
- There is risk of fire or electrical shock.
Do not place a heater or other appliances near the power cable.
- There is a risk of fire and electric shock.
Do not allow water to run into electric parts.
- It may cause a risk of fire, product failure, or electric shock.
Do not store or use flammable gas or combustibles near the product.
- There is a risk of fire or product failure.
Do not use the product in a tightly closed space for a long time.
- Oxygen deficiency could occur.
When flammable gas leaks, turn off the gas and open a window for ventilation before turning the product on.
- Do not use the telephone or turn switches on or off. There is a risk of explosion or fire.
If strange sounds, or small or smoke comes from the product, turn the breaker off or disconnect the power supply cable.
- There is a risk of electric shock or fire.
Stop operation and close the window in storm or hurricane. If possible, remove the product from the window before the hurricane arrives.
- There is a risk of property damage, product failure, or electric shock.
Do not open the panel of the product during operation. (Do not touch the electrostatic filter, if the unit is so equipped.)
- There is a risk of physical injury, electric shock, or product failure.
When the product is soaked (flooded or submerged), contact an Authorized Service Center.
- There is risk of fire or electric shock.
Be cautious that water could not enter the product.
- There is risk of fire, electric shock, or product damage.
Ventilate the product from time to time when operating it together with a stove, etc.
- There is risk of fire or electric shock.
Turn the main power off when cleaning or maintaining the product.
• There is risk of electric shock.
When the product is not be used for a long time, disconnect the power supply plug or turn off the breaker.
- There is risk of product damage or failure, or unintended operation.
Take care to ensure that nobody could step on or fall onto the unit.
- This could result in personal injury and product damage.
CAUTION
Installation
Always check for gas (refrigerant) pressure after installation or repair of product.
- Low refrigerant levels may cause failure of the product.
Install the drain hose to ensure that water is drained away properly.
- A bad connection may cause water leakage.
Keep the product level when installing it.
• To avoid vibration or water leakage.
Do not install the product where the noise or hot air from the outdoor unit could disturb the neighbors.
- It may cause a problem for your neighbors.
Do not use people to lift and transport the product.
- Avoid personal injury.
Do not install the product where it will be exposed to sea wind (salt spray) directly.
- It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation.
Operation
Do not expose the skin directly to cool air for long periods of time. (Don't sit in the draft.)
• This could harm your health.
Do not use the product for special purposes, such as preserving foods, works of art, etc. It is a consumer air conditioner, not a precision refrigeration system.
- There is risk of damage or loss of property.
Do not block the inlet or outlet of air flow.
- It may cause product failure.
Use a soft cloth to clean. Do not use harsh detergents, solvents, etc.
- There is risk of fire, electric shock, or damage to the plastic parts of the product.
Do not touch the metal parts of the product when removing the air filter. They are very sharp!
• There is risk of personal injury.
Do not step on or put anything on the product. (outdoor units)
- There is risk of personal injury and failure of product.
Always insert the filter securely. Clean the filter every four weeks or more often if necessary.
- A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage.
Do not insert hands or other objects through the air inlet or outlet while the product is operated.
• There are sharp and moving parts that could cause personal injury.
Do not drink the water drained from the product.
- It is not sanitary and could cause serious health issues.
Use a firm stool or ladder when cleaning or maintaining the product.
- Be careful and avoid personal injury.
Prior to Operation
Preparing for Operation
- Contact an installation specialist for installation.
- Use a dedicated circuit breaker.
Usage
- Being exposed to direct airflow for an extended period of time could be hazardous to your health. Do not expose occupants, pets, or plants to direct airflow for extended periods of time.
- Due to the possibility of oxygen deficiency, ventilate the room when used together with stoves or other heating devices.
- Do not use this air conditioner for non-specified special purposes (e.g. preserving precision devices, food, pets, plants, and art objects). Such usage could damage the items.
Cleaning and Maintenance
- Do not touch the metal parts of the unit when removing the filter. Injuries can occur when handling sharp metal edges.
- Do not use water to clean inside the air conditioner. Exposure to water can destroy the insulation, leading to possible electric shock.
- When cleaning the unit, first make sure that the power and breaker are turned off. The fan rotates at a very high speed during operation. There is a possibility of injury if the unit's power is accidentally triggered on while cleaning inner parts of the unit.
Service
For repair and maintenance, contact your authorized service dealer.
Operating Instructions
Name and Function of Wired Remote Controller (Accessory)
Please attach the information label inside of the door. Please choose the proper language depending on your country.
1 OPERATION INDICATION SCREEN 2 SET TEMPERATURE BUTTON 3 FAN SPEED BUTTON 4 ON/OFF BUTTON 5 OPERATION MODE SELECTION BUTTON 6 WIRELESS REMOTE CONTROLLER RECEIVER 7 AIR FLOW BUTTON 8 SUBFUNCTION BUTTON 9 FUNCTION SETTING BUTTON 10 VENTILATION BUTTON 11 RESERVATION 12 UP, DOWN, LEFT, RIGHT BUTTON - To check the indoor temperature, press ⏻ button. 13 ROOM TEMPERATURE BUTTON 14 SETTING/CANCEL BUTTON 15 EXIT BUTTON
Standard Operation - Standard Cooling
It cools the room with comfortable and clean wind.
1
Press the ⏻ button to turn on the indoor unit.
2
Press the OPER MODE button to select Cooling operation mode.
3
Adjust the desired temperature by pressing the ↗ ↙ buttons.
Press the ▶ button to check the room temperature.
When setting the desired temperature higher than the room temperature, only ventilation wind is blown out instead of cooling wind.
* Setting Temp Range: 18°C~30°C (64°F~86°F)
Standard Operation - Dehumidification Mode
It removes humidity while air-cooling weakly.
1
Press the ⏻ button to turn on the indoor unit.
2
Press the OPER MODE button to select Dehumidification mode. The temperature setting cannot be adjusted during operation in this mode.
3
Press the FAN SPEED button to select air flow High (It is possible to select only air flow high).
- In rainy season or high humidity climate, it is possible to operate dehumidifier and cooling mode simultaneously to remove humidity effectively.
Standard Operation - Fan Mode
It blows the air as it is in the indoor, not the cold wind.
![graph TD A["1 Press button to turn on the indoor."] --> B["2 Press OPER MODE button to select Fan Mode."] B --> C["3 Press the FAN SPEED button to select air flow High (It is possible to select only air flow high)."]](/content/2026/05/1000688/images/4e0719f7c39ac2474881d92d05105b1d096b8e4b9a93f4b898ac589799626d48.jpg)
- Because it releases the wind that has no temperature difference from the room, it functions to circulate the inside air.
Standard Operation - Heating Mode
It supplies warm wind to the indoor.
• Heating drive only operates for the heating and cooling models. - Heating does not operate on cooling exclusive models.
Standard Operation - Temperature Setting/Room Temperature Check
Temperature Setting
1. We can simply adjust the desired temperature.
- Press the ↗/↙ buttons to adjust the desired temperature.
↗: Increase 1°C per one time pressing. ↙: Decrease 1°C per one time pressing.
• Room temp: Indicates the current room temperature. • Set temp: Indicates the temperature that the user wants to set.
Cooling operation:
- The cooling mode does not work if the desired temperature is higher than the room temperature. Please lower the desired temperature.
Room Temperature Check
1. Whenever you press the ▶ button, the room temperature will be displayed within 5 seconds.
After 5 seconds, it turns to display the desired temperature.
Because of the location of the remote controller, the real room temperature and the displayed value can be different.
- For air-cooling drive, from 18°C to 30°C, you can select the desired temperature.
- 5°C is proper for the difference between room and outside temperature.
Sub Function - Humidifier
1. Repeatedly press the button until the 📍 icon flashes.
2 Turn on/off HUMIDIFIER by pressing OK button (The ✿ icon will be displayed in case of SETTING option and disappear in reverse case.)
3 Press ESC button to exit.
※ After setup, it automatically gets out of setup mode if there is no button input for 25 seconds.
※ When exiting without pressing set button, the manipulated value is not reflected.
• We provide only function to control Humidifier on/off. - If the operation mode is changed, Humidifier is off. - It can only be set when the product is operated standard cooling, fan mode and electric heater mode - It is impossible to select this mode during operating dehumidification mode.
Sub Function - Electric Heater (Accessory)
It supplies warm wind by using electric heater.
1 Repeatedly pressing SUB FUNC button until ∞ icon flash.
2 Turn on/off ELECTRIC HEATER by pressing ON CLEAR button (the 📄 icon will be displayed in case of SETTING option and disappear in reverse case.)
3 Press ESC button to exit.
※ After setup, it automatically gets out of setup mode if there is no button input for 25 seconds.
※ When exiting without pressing set button, the manipulated value is not reflected.
• Electric Heater is heating function on this product. - It can only be set when product operation is off. - If the electric heater mode is operated first, it can be set heating operation and desired temperature is 30° C
Function Setting - Child Lock
It is the function to use preventing children or others from careless using.
1 Press 🎨 button repeatedly until the 😊 is flashing. 2 If moving to 'setup' icon area by using < > button, 'setup' icon blinks, and child lock function is setup if pressing OK CLEAR button at that time. 3 When cancelling lock function, if moving to 'cancel' icon by pressing < > button and then, pressing OK. CLEAR button, child lock function is cancelled. 4 Press ESC button to exit.
* After setup, it automatically gets out of setup mode if there is no button input for 25 seconds. When exiting without pressing set button, the manipulated value is not reflected.
Function Setting - Filter Sign Clear
This function is to clear the indicator of indoor filter cleaning.
- When the filter is covered with dust, it will reduce cooling/heating efficiency and consume more power. Therefore, clean the filter whenever the cleaning time is due.
The filter cleaning indication is automatically canceled without separate cancellation after a certain period of time.
Function Setting - Changing Current Time
1. Press the function setup button. If you press the function setup button repeatedly, it moves to the time setup menu. The 'Time setup' icon is indicated at that time and the current time indication blinks. Example: Changing current time to 'Monday / AM 10:20'.
2. Press the < > key to adjust the current day.
SUN MON TUE WED THU FRI SAT
3. Press the ▼ key to move to AM/PM setting mode (the 'AM/PM' segment will flash).
4. Set the AM/PM value by pressing the ▲ ▼ button.
5. Press the < > button to move to 'Hour' setting mode. (The 'Hour' segment will flash)
6. Set the Hour value by pressing the button.
AM 10:00
7. Press the ☑ button to move to 'Minute' setting mode. (The 'Minute' segment will flash)
8. Set the Minute value by pressing the △ ▼ button.
9. Press the OK button to finish.
10. During the process, press the Esc button to release and exit from setting mode.
(In case of exit with incomplete information, it will return to the previous setting)
When exiting without pressing the set button, the manipulated value is not reflected.
Programming - Simple Reservation
You can set the reservation conveniently in units of 1 hour, from 1 hour to 7 hours.
When simple reservation is set, the product automatically runs or stops after the set time.
Programming - ON Reservation
Automatically turns on at the reserved time you set.
1. Press the ⏱ button.
Example: Setting ON Reservation Time as 'AM 10:20'.
2. Press the ⏻ button repeatedly to enter the ON reservation setting mode.
(The ON segment will flash.)
3. Press the △ or ▼ button to adjust the AM/PM setting.
4. Press the < or > button to enter the Hour setting mode. When the Hour icon flashes, set the time.
The setting range is within 1~12.
5. Press the < or > button to shift to the Minute setting mode. When the Minute icon flashes, set the minute. The setting range is within 00~59.
6. Press the OK button to finish the setting.
* After setup, it automatically exits setup mode if there is no button input for 25 seconds. * When exiting without pressing the set button, the manipulated value is not reflected.
- If reservation is set, the 'turned on' indication shows up at the lower part of the LCD screen, and the air-conditioner product runs at the time that is set.
- If reservation is cancelled, the 'turned on' indication disappears.
Programming - OFF Reservation
Automatically turned off at the reserved time that you set.
1 Press button.Ex) Setting OFF Reservation  Time as 'AM 10:20'. |
2 Repeatedly pressing button to enter the OFF reservation  setting mode.( Off segment flashing) |
3 Press ▲ ▼ button to adjust AM/ PM setting.  |
4 Press < ▶ button to shift to Hour setting mode. When the Hour icon flash, please setting time.The setting range is within 1~12.   |
5 Press < ▶ button to shift to Minute setting mode. When the Minute icon flash, please setting minute the setting range is within 00~59.   |
6 Press OK button to finish setting.  |
* After setup, it automatically exits setup mode if there is no button input for 25 seconds. * When exiting without pressing the set button, the manipulated value is not reflected.
- If reservation is set, the 'turned off' indication shows up at the lower part of the LCD screen, and the air-conditioner product runs at the time that is set.
- If reservation is cancelled, the 'turned off' indication disappears.
Programming : Weekly Reservation
You can set the daily reservation in weekly units.
Weekly reservation keeps operating until you cancel it once you set it up.
| 1 Please move to reservation setup mode by pressing reservation button.※ You can setup two weekly reservations for one day, and up to fourteen reservations for a week.For example, to setup (Tuesday morning 11:30 turned on ~ afternoon 12:30 turned off), you setup in order below. |
| 2 Please move to 'WEEKLY' by repeatedly pressing reservation button. 'WEEKLY' blinks at this time. |  |
| 3 Please select weekly reservation 1 or weekly reservation 2 by using △ √ button.※ You can setup two reservations, weekly reservation 1 and weekly reservation 2, for a day. |  |
| 4 Please move to 'date' setup part by using ◀ ▶ button. If 'date' indication blinks, please setup date. You can setup date from Monday to Sunday. |  |
| 5 Please move to 'AM/PM' setup part of turning on by using △ √ button. |  |
| 6 Please move to 'hour' setup part of turning on by using ◀ ▶ button.- It is the part to setup the time at which air-conditioner is turned on. |  |
| 7 Please change time by using △ √ button.- You can setup hour 0~12. |
| 8 Please move to 'minute' setup part of turning on by using ▷ button. |
| 9 If 'minute' indication blinks, please setup 'minute' by using △ √ button |
| 10 Please move to 'AM/PM' setup part of turning off by using ▶ button.- AM/PM setup is identical with turning on time setup. |  |
| 11 Please move to 'hour' setup part of turning off by using ▶ button.- It is the part to reserve the time at which air-conditioner is turned off.- If 'hour' indication blinks, please setup 'hour'.※ Please setup 'hour' and 'minute' identically with the method to setup turning on time. |  |
| 12 If finishing weekly reservation setup, please press setup/cancellation button.Weekly reservation setup for the day that you set is finished. |
13 If you setup with the method identical with above by selecting the day that you'd like to setup, it operates weekly reservation.If you setup both turning on reservation time and turning off reservation time identically, it doesn't operate reservation drive.Weekly reservation explanation  SUN MON TUE WED THU FRI SATUnder bar: the indication that there is weekly reservation for corresponding day |
Programming : Holiday Reservation
It automatically stops at the reserved day that you set.
1 Please press the ⏻ button. It enters into reservation setup mode.
2 Please move to 'holiday' by repeatedly pressing the 📋 button.
3 Please move to the 'date' that you want to set up as a holiday by using the < > button.
4 Please appoint or cancel a holiday by using the △ ▼ or OK CLEAR button.
For example, when you set Monday/Friday as a holiday, the 'Monday' and 'Friday' letters disappear.
5 Please press the ESC button to finish holiday setup.
If it comes to an appointed holiday, the air-conditioner automatically stops. Once you set up a holiday appointment, until you cancel the holiday setup, the air-conditioner automatically stops within one hour even if you run the air-conditioner.
Care and Maintenance
CAUTION
Before performing any maintenance, turn off the main power to the system.
You can do some of the periodic maintenance for your unit yourself; this includes cleaning air filters, cleaning the unit cabinet, clearing the condenser coil, and conducting a general unit inspection on a regular basis.
WARNING
Before removing access panels to service the unit, disconnect the power supply. Failure to disconnect power before attempting any servicing can result in severe injury or death.
This product has anti-bacteria washable filters. It is very important to keep air filters clean in the central duct system. Be sure to inspect them at least once each month when the system is in constant operation. (In new buildings, check the filters every week for the first 4 weeks.)
Washable type filters can be cleaned by washing with a mild detergent and water. Ensure that the filters are thoroughly dried before reinstalling them in the unit (or duct system).
Unfiltered air circulates through the unit's condenser coil and can cause the coil's surface to become clogged with dust, dirt, etc. To clean the coil, vertically (i.e., along the fins) stroke the coil surface with a soft bristled brush.
Keep all vegetation away from the condenser coil area.
Maintenance Performed by Serviceman-Cooling Season
To keep your unit operating safely and efficiently, the manufacturer recommends that a qualified serviceman check the entire system at least once each year, or more frequently if conditions warrant. Your serviceman may examine these areas of your unit:
- Filters (for cleaning)
- Motors and drive system components
- Condenser coils (for cleaning)
- Safety controls (for mechanical cleaning)
- Electrical components and wiring (for possible replacement or connection tightness)
- Condensate drain (for cleaning)
- Inspect the unit duct connections to ensure they are physically sound and sealed to the unit casing.
- Inspect the unit mounting support to see that it is sound.
- Inspect the unit to ensure there is no obvious deterioration.
Maintenance Performed by Serviceman-Heating Season
Complete the unit inspections and service routines described below at the beginning of each heating season.
- Inspect the controller panel wiring to verify that all electrical connections are tight and that wire insulation is intact.
When the air conditioner is not going to be used for a long time.
When the air conditioner is not going to be used for a long time.
- Operate the air conditioner on air circulation mode for 2 to 3 hours.
• This will dry out the internal parts.
- Turn off the circuit breaker.
CAUTION
Turn off the circuit breaker when the air conditioner is not going to be used for a long time. Dirt may collect and may cause a fire.
When the air conditioner is to be used again.
- Clean the air filter and re-install it in the indoor side.
On the filter access panel at the left side of the unit, a "Filter access panel" label is attached.
- Check that the air inlet and outlet of the indoor/outdoor unit are not blocked.
Operation Tips
Do not overcool the room.
This is not good for your health and wastes electricity.
Keep blinds or curtains closed.
Do not let direct sunshine enter the room when the air conditioner is in operation.
Clean the air filter regularly.
Blockages in the air filter reduce the airflow and lower cooling and dehumidifying effects.
Make sure that the doors and windows are shut tight.
Avoid opening doors and windows as much as possible to keep the cool air in the room.
Ventilate the room occasionally.
Since windows are kept closed, it is a good idea to open them and ventilate the room now and then.
CAUTION
Before removing access panels to draw out air filters, disconnect power supply.
Since the fan rotates at high speed, it may cause a serious injury.
① Clean at least once every month using a vacuum cleaner or washing with a neutral detergent in lukewarm water. ② After washing with water, dry it well in the shade. - Do not expose the air filter to direct sunlight or heat from a fire when drying it.
Before you call for service...
Check the following points before requesting repairs or service.... If the fault persists, please contact your dealer or service center.
| Case Explanation | |
| Does not operate. | ·Have you made a mistake in timer operation? - See reservation instructions. |
| ·Has the fuse blown or has the circuit breaker been tripped? |
| ·Does the remote controller display "CH" on the LCD? This means that protective device has been tripped please contact your dealer or service center. |
| The room has a peculiar odor. | ·Check that this is not a damp smell exuded by the walls, carpet, furniture, or cloth items in the room. |
| It seems that condensation is leaking from the air conditioner. | ·Condensation occurs when the airflow from the air conditioner cools the warm air. |
| Air conditioner does not operate for about 3 minutes when restarted. | ·This is the protection device of the air conditioner. ·Wait about three minutes and operation will begin. |
| Does not cool or heat effectively. | ·Is the air filter dirty? - See air filter cleaning instructions. |
| ·The room may have been very hot when the air conditioner was first turned on. Allow time for it to cool down. |
| ·Has the setting temperature been set incorrectly? - See temperature setting instructions. |
| ·Has the setting temperature been set incorrectly? |
| ·Are the unit's air inlet or outlet vents obstructed? |
| Remote controller display is faint, or no display at all. | ·Has the circuit breaker been tripped? |
| Power outage occurs. (Outage Compensation Function) | It automatically retrieves the previous operating conditions. You don't need to press any buttons. (Additional functions will not be retrieved automatically.) |
