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USER MANUAL TSNC126YDA1 LG
Please read this manual carefully before operating your set and retain it for future reference.
TYPE: WALL MOUNTED
TIPS FOR SAVING ENERGY
Here are some tips that will help you minimize the power consumption when you use the air conditioner. You can use your air conditioner more efficiently by referring to the instructions below:
- Do not cool or heat excessively indoors. This may be harmful for your health and may consume more electricity.
- Do not wait till the temperature become very high (In summer) or very low (In winter). Turn on air conditioner before temperature becoming too high or low.
- Prefers to be the lowest (or highest) temperature which adjusted via the controller unit at cooling (or heating) mode is 20 (or 28) degrees Celsius.
- Block sunlight with blinds or curtains while you are operating the air conditioner.
- Keep doors or windows closed tightly while you are operating the air conditioner.
- Adjust the direction of the air flow vertically or horizontally to circulate indoor air.
- Speed up the fan to cool or warm indoor air quickly, in a short period of time.
- Open windows regularly for ventilation as the indoor air quality may deteriorate if the air conditioner is used for many hours.
- Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the air flow or weaken the cooling / dehumidifying functions.
- Do not place obstacles around product to maintain the efficiency and the necessary amount of air flow.
For your records
Staple your receipt to this page in case you need it to prove the date of purchase or for warranty purposes. Write the model number and the serial number here:
Model number :
Serial number :
You can find them on a label on the side of each unit.
Dealer's name :
Date of purchase :
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.
Always comply with the following precautions to avoid dangerous situations and ensure peak performance of your product

WARNING
It can result in serious injury or death when the directions are ignored

CAUTION
It can result in minor injury or product damage when the directions are ignored

WARNING
• Always use a power plug and socket with a ground terminal. There is a risk of electric shock.
- Do not use a defective or underrated circuit breaker. Use the correctly rated breaker and fuse. There is risk of fire or electric shock.
- Do not use a multi consent. Always use this appliance on a dedicated circuit and breaker. Otherwise it can cause electric shock or fire.
- For electrical work, contact the dealer, seller, a qualified electrician, or an Authorized Service Center. Do not disassemble or repair the product by yourself. There is risk of fire or electric shock.
- Always ground the product as per the wiring diagram. Do not connect the ground wire to gas or water pipes lightening rod or telephone ground wire. 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 due to dust, water etc.
- Use the correctly rated breaker or fuse. There is risk of fire or electric shock.
- Do not modify or extend the power cable. If the power cable or cord has scrathes or skin peeled off or deteriorated then it must be replaced. There is risk of fire or electric shock.
- For installation, removal or reinstall, always contact the dealer or an Authorized Service Center. There is risk of fire, electric shock, explosion, or injury.
- Do not install the product on a defective installation stand. Be sure that the installation area does not deteriorate with age. It may cause product to fall.
- Never install the outdoor unit on a moving base or a place from where it can fall down. The falling outdoor unit can cause damage or injury or even death of a person.
- When the product is soaked (flooded or submerged) in water, contact an Authorized Service Center for repair before using it again. There is risk of fire or electric shock.
- In outdoor unit the step-up capacitor supplies high voltage electricity to the electrical components. Be sure to discharge the capacitor completely before conducting the repair work. An charged capacitor can cause electrical shock.
- When installing the unit, use the installation kit provided with the product. Otherwise the unit may fall and cause severe injury.
- Be sure to use only those parts which are listed in the svc parts list. Never attempt to modify the equipment. The use of inappropriate parts can cause an electrical shock, excessive heat generation or fire.
- Indoor/outdoor wiring connections must be secured tightly and the cable should be routed properly so that there is no force pulling the cable from the connection terminals. Improper or loose connections can cause heat generation or fire.
- Safely dispose off the packing materials. Like screws, nails, batteries, broken things etc after installation or svc and then tear away and throw away the plastic packaging bags. Children may play with them and cause injury.
- Make sure to check that the power cable plug is not dirty, loose or broken and then only insert the plug completely. Dirty, loose or broken power plug can cause electric shock or fire.
- Be sure to check the refrigerant to the used. Please read the label on the product. Incorrect refrigerant used can prevent the normal operation of the unit.
- Don't use a power cord, a plug or a loose socket which is damaged. Otherwise it may cause a fire or electrical shock.
- Do not touch, operate, or repair the product with wet hands. Hold the plug by hand when taking out. There is risk of electric shock or fire.
- Do not place a heater or other heating appliances near the power cable. There is risk of fire and electric shock.
- Do not allow water to run into electric parts. Install the unit away from water sources. There is risk of fire, failure of the product, or electric shock.
- Do not store or use or even allow flammable gas or combustibles near the product. There is risk of fire.
- Do not use the product in a tightly closed space for a long time. Perform ventilation regularly. Oxygen deficiency could occur and hence harm your health.
- Do not open the front grille of the product during operation. (Do not touch the electrostatic filter, if the unit is so equipped.) There is risk of physical injury, electric shock, or product failure.
- If strange sounds, smell or smoke comes from product. Immediately turn the breaker off or disconnect the power supply cable. There is risk of electric shock or fire.
- Ventilate the product room from time to time when operating it together with a stove, or heating element etc. Oxygen deficiency can occur and hence harm your health.
- Turn the main power off and unplug the unit when cleaning or repairing the product. There is risk of electric shock.
- When the product is not to 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 especially kids could step on or fall onto the outdoor unit. This could result in personal injury and product damage.
- 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 to turn the unit ON/OFF. There is risk of fire or electric shock.
- When flammable gas leaks, turn off the gas and open a window for ventilation before turn the product on. Do not use the telephone or turn switches on or off. There is risk of explosion or fire.
- For inner cleaning, contact an Authorized Service Center or a dealer. Do not use harsh detergent that causes corrosion or damage on the unit. Harsh detergent may also cause failure of product, fire, or electronic shock.

CAUTION
- Two or more people must 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.
• Install the drain hose to ensure that the condensed water is drained away properly. A bad connection may cause water leakage.
- Keep level even when installing the product. To avoid vibration or noise.
- Do not install the product where the noise or hot air from the outdoor unit could damage or disturb the neighborhoods. It may cause a problem for your neighbors and hence dispute.
- Always check for gas (refrigerant) leakage after installation or repair of product. Low refrigerant levels may cause failure of product.
- 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 or splashing water 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. 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 after cleaning. Clean the filter every two weeks or more often if necessary. A dirty filter reduces the efficiency.
- Do not insert hands or other objects through the air inlet or outlet while the product is operating. There are sharp and moving parts that could cause personal injury.
- Be cautious when unpacking and installing the product. Sharp edges could cause injury.
- If the refrigerant gas leaks during the repair, do not touch the leakaing refrigerant gas. The refrigerant gas can cause frostbite (cold burn)
- Do not tilt the unit when removing or uninstalling it. The condensed water inside can spill.
- Do not mix air or gas other than the specified refrigerant used in the system. If air enters the refrigerant system, an excessively high pressure results, causing equipment damage or injury.
- If the refrigerant gas leaks during the installation, ventilate the area immediately. Otherwise it can be harmful for your health.
- Dismantling the unit, treatment of the refrigerant oil and eventual parts should be done in accordance with local and national standards. Replace the all batteries in the remote control with new ones of the same type. Do not mix old and new batteries or different types of batteries. There is risk of fire or product failure.
- Do not recharge or disassemble the batteries. Do not dispose off batteries in a fire. They may burn or explode.
- If the liquid from the batteries gets onto your skin or clothes, wash it well with clean water. Do not use the remote if the batteries have leaked. The chemicals in batteries could cause burns or other health hazards.
- 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.
- Do not expose your skin or kids or plants to the cool or hot air draft. This could harm to your health.
- If you eat the liquid from the batteries, brush your teeth and see doctor. Do not use the remote if the batteries have leaked. The chemicals in batteries could cause burns or other health hazards.
- 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, maintaining or repairing the product at an height. Be careful and avoid personal injury.
TABLE OF CONTENTS
2TIPS FOR SAVING EN- ERGY
3IMPORTANT SAFETY IN-STRUCTIONS
7 Electrical Safety
7 Temporary Use of an Adapter
7 Temporary Use of an Extension Cord
7Symbols used in this Manual
8BEFORE USE
8Components
10 Using the remote control
12BASIC FUNCTIONS
12Cooling your room
12Heating your room
12Removing humidity
13Airing your room
13Adjusting the fan speed
13Adjusting the air flow direction
13 Setting sleep mode
14 ADVANCED FUNCTIONS
14Changing room temperature quickly
14 Display screen brightness
14 Energy saving cooling mode
15 Forced operation
15 Auto Restart Function
16MAINTENANCE
16Indoor Unit
18Outdoor Unit
18Operation Tips!
19TROUBLESHOOTING
19Self-diagnosis function
19Before requesting service
20Call the service immediately in the following situations
20Operation ranges
Electrical Safety

WARNING
- This appliance must be properly grounded. To minimize the risk of electric shock, you must always plug into a grounded outlet.
- Do not cut or remove the grounding prong from the power plug.
- Attaching the adapter ground terminal to the wall receptacle cover screw does not ground the appliance unless the cover screw is metal and not insulated, and the wall receptacle is grounded through the house wiring.
- If you have any doubt whether the air conditioner is properly grounded, have the wall receptacle and circuit checked by a qualified electrician.
Temporary Use of an Adapter
We strongly discourage the use of an adapter due to potential safety hazards. For temporary connections, use only a genuine adapter, available from most local hardware stores. Ensure that the large slot in the adapter is aligned with the large slot in the receptacle for a proper polarity connection.
To disconnect the power cord from the adapter, use one hand on each to avoid damaging the ground terminal. Avoid frequently unplugging the power cord as this can lead to eventual ground terminal damage.

WARNING
- Never use the appliance with a broken adapter.
Temporary Use of an Extension Cord
We strongly discourage the use of an extension cord due to potential safety hazards.

WARNING
- This appliance should be installed in accordance with national wiring regulations. This guide acts as a guide to help to explain product features.
Symbols used in this Manual

This symbol alerts you to the risk of electric shock.

This symbol alerts you to hazards that may cause harm to the air conditioner.

This symbol indicates special notes.
BEFORE USE
Components
Indoor unit

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Air inlet Plasma filter (Optional) Grille tab Front grille ON/OFF button Air filter Air outlet Louvers (Vertical blades) Flap (Horizontal blade) Signal receiver* The feature can be changed according to type of model.

NOTE
The number of operation lamps and their locations may vary, depending on the model of the air conditioner.
Operation Indication Lamps
![]() | On/Off | Lights up during the system operation, error code and auto restart setting. |
![]() | Sleep mode L | Lights up during sleep mode auto operation.(non-Inverter Model) |
![]() | Energy-Saving Cooling Mode | Lights up during Energy-Saving Cooling Mode Operation(Inverter Model only) |
| [ADBE] | Plasma | The function illustrates its dynamic mode by using a multiple lighting system. |
![]() | Timer | Lights up during timer operation.(non-Inverter Model)Lights up during timer operation or sleep mode auto operation (Inverter Model only) |
![]() | Defrost mode | Lights up during defrost mode or *hot start operation (Heat pump model only) |
| [XXCT] | Outdoor unit operation | Lights up during outdoor unit operation. (Cooling model only) |
![]() | Power Display | Indicates the setting temperature and operation mode. |
| Operation mode | Cooling, heating, Dehumidification Mode | Auto operation mode | Jet Cool/ Heat | Energy-saving cooling mode | Test operation | Auto clean | |||||
| Standard | Too hot | Hot | Comfort-able | Cold Too cold | |||||||
| Shape of display | Setting temperature | A 1-2-10 12PoEoLoCo | |||||||||
* Hot start operation: Stops the indoor fan in heating operation for minutes to prevent cold air from blowing out from unit.
* In defrost mode unit stops heating operation for few minutes to remove formation of ice on the heat exchanger coils to maintain the efficiency.
Outdoor unit

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Air intake vents Connecting wires Refrigerant pipes Air outlet vents Base plate Drain hose* The feature can be changed according to type of model.
Using the remote control
You can operate the air conditioner more conveniently with the remote control.
Wireless remote control

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Display screen Control panel LIGHT [3SEC] LG
flowchart
graph TD
A["Operation Mode"] --> B["Cooling Operation"]
B --> C["Healthy Dehumidification Operation"]
C --> D["Air Circulation"]

flowchart
graph TD
A["Operation Mode"] --> B["Cooling Operation"]
B --> C["Healthy Dehumidification Operation"]
C --> D["Heating Operation"]
D --> E["Air Circulation"]
| Control panel | Display screen | Description |
| -O | On/Off button:Turns the power on/off. | |
| 80°C | Temperature adjustment buttons:Adjusts the room temperature when cooling. | |
| Operation mode selection button:Selects the operation mode.Cooling operation (*Dehumidifying operation (◇Heating operation (*Air circulation (* | ||
| Po | Jet cooling button:Cools down the indoor temperature within a short period of time. | |
| Indoor fan speed button:Adjusts the fan speed. | ||
| - | Air flow direction button:Adjusts the air flow direction vertically. | |
| Sleep mode auto button*:Sets the sleep mode auto operation. | ||
| - | ENERGY SAVING COOLING BUTTON (OPTIONAL):Used to save Energy. |
* Some functions may not be supported, depending on the model.
Inserting batteries
Insert batteries before using the remote control. The battery type used is AAA (1.5 V).
1 Remove the battery cover.

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Line drawing of a hand holding a remote control device with an arrow indicating left motion (no text or symbols)2 Insert the new batteries and make sure that the + and - terminals of the batteries are installed correctly.

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Hand holding a pen or tool with a black arrow pointing to a device panel (no text or symbols visible)3 Reattach the battery cover.
NOTE
If the display screen of the remote control starts to fade, replace the batteries.
Installing the remote control holder
Install the holder where there is no direct sunlight to protect the remote control.
1 Choose a safe and easily-accessible place.
2 Fix the holder by fastening the 2 screws firmly with a screwdriver.

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Technical line drawing of a mechanical device with a screwdriver and handle (no text or symbols)3 Slide the remote control into the holder.

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Illustration of a hand holding a digital payment terminal with directional arrows indicating action (no text or symbols)Operating method
Point the remote control towards the signal receiver at the bottom of the air conditioner to operate it.

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Line drawing of a wall-mounted air conditioner with a digital icon showing wireless signal (no text or symbols)NOTE
- The remote control may operate other electronic devices if pointed towards them. Make sure to point the remote control towards the signal receiver of the air conditioner.
- For proper operation, use a soft cloth to clean the signal transmitter and receiver.
BASIC FUNCTIONS
Cooling your room
(Cooling operation)
1 Press to turn on the power.
2 Press repeatedly to select the cooling operation.
- ✦ displayed on the display screen.

text_image
18°C3 Press or to set the desired temperature.
- The temperature range is 18^ C ( 64^ F) \~ 30^ C ( 86^ F).
Heating your room
(Heating operation)
1 Press to turn on the power.
2 Press repeatedly to select the heating operation.
- is displayed on the display screen.

text_image
30°C3 Press or to set the desired temperature.
- The temperature range is 16^ C ( 60^ F) \~ 30^ C ( 86^ F).
NOTE
Cooling-only models do not support this function.
Removing humidity
(Dehumidifying operation)
This mode removes excess moisture from an environment with high humidity or in the rainy season, in order to prevent mold from setting in. This mode adjusts the room temperature and the fan speed automatically to maintain the optimal level of humidity.
1 Press to turn on the power.
2 Press repeatedly to select the dehumidifying operation.
- 📁s displayed on the display screen.

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Simple diagram with battery, water droplet, and equals sign (no text or labels)NOTE
- In this mode you cannot adjust the room temperature, as it is adjusted automatically. Also, the room temperature is not displayed on the display screen.
Airing your room
(Air Circulation operation)
This mode only circulates the indoor air without changing the room temperature.
1 Press to turn on the power.
2 Press repeatedly to select the air circulation operation.
- is displayed on the display screen.

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Simple diagram with battery, flower symbol, and three horizontal lines (no text or labels)3 Press to adjust the fan speed.
Adjusting the fan speed
1 Press repeatedly to adjust the fan speed.
- Select if you want natural air. The fan speed adjusts automatically.
| Remark Speed | |
![]() | High |
![]() | Medium |
![]() | Low |
![]() | Natural Wind |
Adjusting the air flow direction
1 To adjust the direction of the air flow vertically, press change the air flow direction automatically.
NOTE
- Adjusting the air flow direction vertically may not be supported, depending on the model.
- Adjusting the air deflector arbitrarily may cause product failure.
- If you restart the air conditioner, it starts to operate with the previously set direction of air flow, so the air deflector may not match the icon displayed on the remote control. When this occurs, press to adjust the direction of the air flow again.
Setting sleep mode
Use the sleep mode to turn off the air conditioner automatically when you go to sleep.
1 Press to turn on the power.
2 Press repeatedly to select the hour you want to turn air conditioner off. (up to 7 hours)
- displayed on the display screen in this mode.
NOTE
In the Cooling and Dehumidifying modes, the temperature increases by 1^ C after 30 minutes and by a further 1^ C after another 30 minutes for a more comfortable sleep. The temperature increases with up to 2^ C from the preset temperature.
ADVANCED FUNCTIONS
The air conditioner offers some additional advanced functions.
Changing room temperature quickly
(Jet Cool/Heat operation)
This mode allows you to cool indoor air quickly in summer or warm it quickly in winter.
1 Press to turn on the power.
2 Press .

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■* PoDisplay screen brightness
You can adjust the brightness of the indoor unit display screen.
1 Press (Hold 3 seconds) turn on/off the Display screen.
NOTE
This function may not be supported, depending on the model.
Energy saving cooling mode
This mode minimizes power consumption during cooling and increases the set temperature to the optimal level for a more comfortable environment.
The temperature automatically sets at 22^(72^) if ambient temperature is below 22^(72^) .
The temperature maintains if ambient temperature is above 22^(72^) .
1 Press to turn the power on.
2 Press repeatedly to select the cooling operation.
3 Press ENERGY TURNS
C

Forced operation
Operation procedures when the remote control can't be used. The operation will be started if the ON/OFF button is pressed. If you want to stop operation, re-press the button.

text_image
ON/OFF button* The feature can be changed according to type of model.
- For cooling and heating models, the operation mode changes, depending on the room temperature.
| Room temp. Set temp. | Operation mode | |
| Below 21°C 24°C | Heating operation | |
| Above 21°C And Below 24°C | 23°C | Dehumidifying operation |
| Above 24°C 22°C | Cooling operation | |
- For cooling-only models, the temperature is set to 22^ C.

NOTE
Test operation
During the TEST OPERATION, the unit operates in cooling mode at high speed fan, regardless of room temperature and resets in 18 minutes. During test operation, if remote controller signal is received, the unit operates as remote controller sets. If you want to use this operation, Press and hold the ON/OFF button for 3\~5 seconds, then the buzzer sound 1 "beep".
If you want to stop the operation, re-press the button.
Auto Restart Function
This function is useful in the situation of power failure.
When power regains after a failure this feature restore the previous operating condition and the air conditioner will run in the same settings.

NOTE
This feature is enabled by factory default setting, but you can disable it by pressing the ON/OFF button for 6 seconds. The unit will beep twice and the indicator lamp(2) will blink 4 times.
To enable it, press the button again for 6 seconds. The unit will beep twice and the indicator lamp(1) will blink 4 times.
MAINTENANCE
CAUTION
Before performing any maintenance, turn off the main power to the system, disconnect the circuit breaker and unplug the power cord.
Clean the product regularly to maintain optimal performance and to prevent possible breakdown.
* This may not be provided, depending on the model.
Indoor Unit
! CAUTION
Never use any of these
- Water hotter than 40°C. It may cause deformation and discoloration.
- Volatile substances. They may damage the surface of the air conditioner.

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Purine Chlor GasolineAir Filters
The air filters behind the front panel / grill should be checked and cleaned once in every 2 weeks or more often if necessary. To remove the filters see the self explanatory diagrams for each model type. Clean the filters with a vacuum cleaner or warm soapy water. If dirt is not easily removed, wash with a solution of detergent in luke warm water. Dry well in shade after washing and reinstall the filters back in place.

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Illustration of a solar panel installation and a detergent bottle with cleaning (no text or symbols)Plasma Filters (Optional)
The plasma filters behind the air filter should be checked and cleaned once in every 3 months or more often if necessary. To remove the filters see the self explanatory diagrams for each model type. Clean the filters with a vacuum cleaner. If it is dirty wash it with water and dry well in shade an install back in place.

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Technical illustration showing a tool in a grid and a hand holding a tool with a water tap (no text or symbols)Deodorizer Filters (Optional)
Remove the deodorizer filters behind the air filter and expose them in direct sunlight for 2 hours.
And then insert these filters into original position.

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Line drawing of hands holding a handheld device (no text or symbols)Removal of Filters
Two different methods to open the front panel based on types of air conditioner as below ;
Type 1: Open the front panel as shown.
Then pull the filter tab slightly forward to remove the air filter.
After removing the air filter remove the plasma and deodorizer filter by slightly pulling forward.

flowchart
graph TD
A["Air Condition"] --> B["Deodorizer Filter"]
B --> C["Plasma Filter"]
* The feature can be changed according to type of model.
Type 2: Pull the front panel from both sides as shown.
Then pull the filter tab slightly forward to remove the filter. After removing the air filter remove the plasma and triple deodorizer filter by slightly pulling forward.

flowchart
graph TD
A["Air Condition"] --> B["Deodorizer Filter"]
B --> C["Plasma Filter"]
* The feature can be changed according to type of model.

CAUTION
Don't touch this plasma filter within 10 seconds after opening the inlet grille, it may cause an electric shock.
Outdoor Unit
The heat exchanger coils and panel vents of the outdoor unit should be checked regularly. If clogged with dirt or soot, the heat exchanger and panel vents may be professionally steam cleaned.

NOTE
Dirty or clogged coils will reduce the operating efficiency of the system and cause higher operating costs.
Operation Tips!
| Do not overcool the room.This is not good for the health and wastes electricity. | Keep blinds or curtains closed.Do not let direct sunshine enter the room when the air conditioner is in operation. | Keep the room temperature uniform.Adjust the vertical and horizontal airflow direction to ensure a uniform temperature in the room. | |||
| Make sure that the doors and windows are shut tightly.Avoid opening doors and windows as much as possible to keep the cool air in the room. | Clean the air filter regularly.Blockages in the air filter reduce the airflow and lower cooling and dehumidifying effects.Clean at least once every two weeks. | Ventilate the room occasionally.Since windows are kept closed, it is a good idea to open them and ventilate the room now and then. | Use high fan speed for effective and fast cooling.The unit gives its rated cooling capacity when the fan speed is high. | ||
TROUBLESHOOTING
Self-diagnosis function
This unit has an inbuilt error diagnosis capability. Unit LED(☐) will blink in case if thermistor fails. Please contact your serviceman/dealer in such a situation
| Error Display LED ( Ⓤ) | Check Point |
![]() | - Indoor room temperature thermistor open/short.- Indoor pipe temperature thermistor open/short. |
Before requesting service
Please check the following before you contact the service center. If the problem persists, contact your local service center.
| Problem Possible causes Corrective action | ||
| The air conditioner does not work. | The air conditioner is unplugged. | Check whether the power cord is plugged into the outlet. |
| A fuse is blown or the power supply is blocked. | Replace the fuse or check if the circuit breaker has tripped. | |
| A power failure has occurred. | Turn off the air conditioner when a power failure occurs. When the power is restored, wait 3 minutes, and then turn on the air conditioner. | |
| The voltage is too high or too low. | Check if the circuit breaker has tripped. | |
| The air conditioner turned off automatically at a preset time. | Press the power button again. | |
| The air conditioner does not generate cool air. | Air is not circulating properly. | Make sure that there are no curtains, blinds or furniture blocking the front of the air conditioner. |
| The air filter is dirty. | Clean the air filter once every 2 weeks. See “Cleaning Air Filter” for more information. | |
| The room temperature is too high. | In summer, it may take some time to cool indoor air. In this case, select the jet cool operation to cool indoor air quickly. | |
| Cold air is escaping from the room. | Make sure that no cold air is escaping through ventilation points in the room. | |
| The desired temperature is higher than the set temperature. | Set the desired temperature to a level lower than the current temperature. | |
| There is a heating source nearby. | Avoid using a heat generator such as an electric oven or a gas burner while the air conditioner is in operation. | |
| Air circulation operation is selected. | In the air circulation operation, air blows from the air conditioner without cooling or heating the indoor air. Switch the operation mode to the cooling operation. | |
| It is not possible to adjust the fan speed. | The auto operation, jet operation or dehumidifying operation is selected. | In some operation modes, such as the jet or dehumidifying operation modes, you cannot adjust the fan speed. Select an operation mode in which you can adjust the fan speed. |
| It is not possible to adjust the temperature. | The air circulation operation or jet operation is selected. | In some operation modes, such as the air circulation or jet operation mode, you cannot adjust the temperature. Select an operation mode in which you can adjust the temperature. |
Call the service immediately in the following situations
1 Anything abnormal such as burning smell, loud noise etc. happen. Stop the unit and turn the breaker off. Never try to repair by yourself or restart the system in such cases.
2 Main power cord is too hot or damaged.
3 Error code is generated by self diagnosis.
4 Water leaks from indoor unit even if the humidity is low.
5 Any switch, breaker (safety, earth) or fuse fails to work properly
User must carry routine checkup & cleaning to avoid unit's poor performance. In case of special situation, the job must be carried out by service person only.
Operation ranges
For Heat & Cool model, heating operation range follows the below table.
| Heating operation range | Outdoor temperature |
| 1 ~ 24 °C |
* When the outdoor temperature drops below 1 °C, heating capacity may drop slightly depending on the operation condition.

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