LG M21L2H User Manual

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Room Air Conditioner Owner’s Manual

TABLE OF CONTENTS

Safety Precautions.........................3

Prior to Operation ..........................9

Introduction ..................................10

Operating Instructions.................11

Maintenance and Service ............22

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.

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Safety Precautions

WARNING

Safety Precautions

To prevent the injury of 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.

ENGLISH

WARNING

CAUTION

■ The meanings of the symbols used in this manual are as shown below.

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage to properties only.

Be sure not to do.

Be sure to follow the instruction.

■ Installation

underrated circuit breaker. Use this appliance on a dedicated circuit.

• There is risk of fire or electric

shock.

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.

• There is risk of fire or electric

Always ground the product.

shock.

Install the panel and the cover of control box securely.

• 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.

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Safety Precautions

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.

For installation, always contact the dealer or an Authorized Service Center.

• There is risk of fire, electric shock, explosion, or injury.

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 furnishings.

Do not install the product on a defective installation stand.

• It may cause injury, accident, or damage to the product.

■ Operation

Do not touch(operate) the product with wet hands.

• There is risk of fire or electrical shock.

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Do not place anything on the power cable.

• There is risk of fire or electric shock.

Do not allow water to run into electric parts.

• It may cause There is risk of fire, failure of the product, or electric shock.

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Safety Precautions

Be cautious that water could not enter the product.

• There is risk of fire, electric shock, or product damage.

Do not store or use flammable gas or combustibles near the air conditioner.

• There is risk of fire or failure of product.

Do not place a heater or other appliances near the power cable.

• There is risk of fire and electric shock.

Do not use the product in a tightly closed space for a long time.

• Oxygen deficiency could occur.

Do not allow water to run into electric parts.

• It may cause There is risk of fire, failure of the product, 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.

ENGLISH

Thinner

Wax

Turn the main power off when cleaning or maintaining the product.

• There is risk of electric shock.

Stop operation and close the window in storm or hurricane. If possible, remove the air conditioner from the window before the hurricane arrives.

• There is risk of property damage, failure of product, or electric shock.

Do not open the inlet grill 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.

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Safety Precautions

When the product is soaked (flooded or submerged), contact an Authorized Service Center.

• There is risk of fire or eletric shock.

When the product is not be used for a long time, disconnect the power supply cable or turn off the breaker.

• There is risk of product damage or failure, or unintended operation.

Ventilate the product from time to time when operating it together with a stove, etc.

• There is risk of fire or electrical shock.

Take care to ensure that nobody could step on or fall onto the outdoor unit.

• This could result in personal injury and product damage.

Turn the main power off when cleaning the product.

• There is risk of electrical shock.

■ Installation

Always check for gas (refrigerant) leakage after installation or repair of product.

• Low refrigerant levels may cause failure of product.

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Install the drain hose to ensure that water is drained away properly.

• A bad connection may cause water leakage.

Keep level even when installing the product.

• To avoid vibration or water leakage.

90˚

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Safety Precautions

Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods.

• It may cause a problem for your neighbors.

■ Operation

Do not direct airflow at room occupants. (Don't sit in the draft.)

• This could damage your health.

Use two or more people to lift and transport the air conditioner.

• Avoid personal injury.

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 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.

Do not block the inlet or outlet of air flow.

• It may cause product failure.

ENGLISH

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 anyting on the product. (outdoor units)

• There is risk of personal injury and failure of product.

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Safety Precautions

Always insert the filter securely. Clean the filter every two 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 air conditioner is plugged in.

• There are sharp and moving parts that could cause personal injury.

Use a firm stool or ladder when cleaning or maintaining the air conditioner.

• Be careful and avoid personal injury.

Do not drink the water drained from the unit.

• It is not sanitary and could cause serious health issues.

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 explosion

■ Disuse

Do not recharge or disassemble the batteries. Do not dispose of batteries in a fire.

• They may burn or explode.

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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.

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Prior to Operation

Preparing for Operation

1. Contact an installation specialist for installation.

2. Plug in the power plug properly.

3. Use a dedicated circuit.

4. Do not use an extension cord.

5. Do not start/stop operation by plugging/unplugging the power cord.

6. If the cord/plug is damaged, replace it with only an authorized replacement part.

Usage

1. Being exposed to direct airflow for a long time may be hazardous to your health. Do not expose occupants, pets, or plants to direct airflow for a long time.

2. Due to the possibility of oxygen deficiency, ventilate the room when using the appliance together with stoves or other heating devices.

3. Do not use this air conditioner for non-specified special purpose (e.g. preserving precision devices, food, pets, plants, or art objects). Such use may damage your properties.

Cleaning and Maintenance

1. Do not touch the metal parts of the unit when removing the filter. Injury can occur.

2. Do not use water to clean inside the air conditioner. Exposure to water can destroy the insulation, leading to electric shock.

3. 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 triggered while cleaning inner parts of the unit.

Service

ENGLISH

For repair and maintenance, contact your authorized service dealer.

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Introduction

NOTICE

Air inlet

Air filter

Air outlet

Front grille

ON/OFF button

Signal

receiver

Grille tab

Flap

(Horizontal blade)

Louvers

(Vertical blades)

Air Outlet

Air Intake

(side, rear)

Connection pipe Drain hose

Connecting wire

Control cover

Air Intake Vents

Air Outlet Vents

Base Plate

Connection pipe Drain hose

Connecting wire

Control cover

Introduction

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.

Features

This appliance should be installed in accordance with national wiring regulations. This guide acts as a guide to help to explain product features.

Indoor

Outdoor

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Operation indicating

lamps

Operating Instructions

NOTICE

Operating Instructions

How to insert the Batteries

1. Remove the battery cover by pulling it according to the arrow direction.

2. Insert new batteries making sure that the (+) and (-) of battery are installed correctly.

3. Reattach the cover by sliding it back into position.

Use 2 AAA(1.5volt) batteries. Do not use rechargeable batteries.

Storage and Tips for using the Remote Controller

• The remote controller may be stored by mounting

it on a wall.

• To operate the room air conditioner, aim the remote controller at the signal receptor.

ENGLISH

Signal Receptor

Receives the signals from the remote control.(Signal receiving sound: two short beeps or one long beep.)

Operation Indication Lamps

On/Off : Lights up during the system operation.

Sleep Mode : Lights up during Sleep Mode Auto operation.

Timer : Lights up during Timer operation.

Defrost Mode : Lights up during Defrost Mode or Hot

Start operation (Heat pump model only)

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AUTO CLEAN

OFF

CANCEL

SET

Cooling Operation

Auto Operation

Healthy Dehumidification Operation

Flip-up door (opened)

Heating Operation

Signal transmitter

•

Cooling Model( ), Heat Pump Model( )

2 7

Operation Mode

(Heat Pump)

(Cooling Only)

Operating Instructions

Remote Control Operation

The Remote Controller transmits the signals to the system.

START/STOP BUTTON

Operation starts when this button is pressed and stops when the button is pressed again.

OPERATION MODE SELECTION BUTTON

Used to select the operation mode.

ROOM TEMPERATURE SETTING BUTTONS

Used to select the room temperature.

INDOOR FAN SPEED SELECTOR

Used to select fan speed in four steps low, medium, high and CHAOS.

JET COOL

Used to start or stop the speed cooling/heating. (Speed cooling/heating operates super high fan speed.)

CHAOS SWING BUTTON

Used to stop or start louver movement and set the desired up/down airflow direction.

ON/OFF TIMER BUTTONS

Used to set the time of starting and stopping operation.

TIME SETTING BUTTONS

Used to adjust the time.

TIMER SET/CANCEL BUTTON

Used to set the timer when the desired time is obtained and to cancel the Timer operation.

SLEEP MODE AUTO BUTTON

Used to set Sleep Mode Auto operation.

AIR CIRCULATION BUTTON

Used to circulate the room air without cooling or heating.

ROOM TEMPERATURE CHECKING BUTTON

Used to check the room temperature.

RESET BUTTON

Initialize remote controller.

2nd F Button

Used prior to using modes printed in blue at the bottom of buttons.

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Cooling

Healthy

Dehumidification

Auto

Heating

(Heat pump model only)

To lower the temperature

To raise the temperature

(Cooling Only

model)

(Heat Pump

model)

Cooling Operation

Operating Instructions

Press the Start/Stop button. The unit will respond with beep sound.

Open the door on the Remote Controller. To select Cooling Operation, press the Operation Mode Selection button.

Each time the button is pressed, the operation mode is shifted in the direction of the arrow.

Set the temperature lower than the room temperature. The temperature can be set within a range of 18°C~30°C in

1°C.

ENGLISH

You can select the fan speed in four stepslow, medium, high, or CHAOS. Each time the

button is pressed, the fan speed mode is shifted.

Natural wind by the CHAOS logic

❏ For more fresh feeling, press the Indoor Fan Speed Selector and set CHAOS mode. In this mode, the wind

blows like natural breeze by automatically changing fan speed according to the CHAOS logic.

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Operating Instructions

Cooling

Healthy

Dehumidification

Auto

Heating

(Heat pump model only)

To lower the temperature

To raise the temperature

(Cooling Only

model)

(Heat Pump

model)

Auto Operation

Press the Start/Stop button. The unit will respond with beep

sound.

Open the door on the Remote Controller. To select Auto Operation, press the Operation Mode Selection button.

Each time the button is pressed, the operation mode is shifted in the direction of the arrow.

DURING AUTO OPERATION:

❏ You cannot switch the indoor fan speed. It has already been set by the Fuzzy rule. ❏ If the system is not operating as desired, manually switch to another mode. The system will not

automatically switch from the cooling mode to the heating mode, or from heating to cooling, then you must set the mode and the desired temperature again.

❏ During Auto Operation, pressing the chaos swing button makes the horizontal louvers swing up and down

automatically. If you want to stop auto-swing, press the chaos swing button again.

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The temperature and fan speed are automatically set by the electronic controls based on the actual room temperature. If

you want to change the set temperature, press the Room Temperature Setting buttons. The set temperature will be changed considering room temperature.

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Cooling

Healthy

Dehumidification

Auto

Heating

(Heat pump model only)

(Cooling Only

model)

(Heat Pump

model)

Healthy Dehumidification Operation

Press the Start/Stop button. The unit will respond with beep

sound.

Open the door on the Remote Controller. To select Healthy Dehumidification Operation, press the Operation Mode

Selection button. Each time the button is pressed, the operation mode is shifted in the direction of the arrow.

Operating Instructions

ENGLISH

Set the fan speed. You can select the fan speed in four steps - low, medium, high, or

DURING HEALTHY DEHUMIDIFICATION OPERATION:

❏ If you select the dehumidification mode on the operation selection button, the A/C starts to run the

dehumidification function, automatically setting the room temp. and air volume to the best condition for dehumidification based on the sensed room temp. In this case, the setting temp. is not displayed on the Remote Controller and you are not able to control the room temp. either.

❏ During the healthy dehumidification function, the airflow volume is automatically set according to the

optimization algorithm responding to the current room temp. So that room condition is kept healthy and comfortable even in the very humid season.

Natural wind by the CHAOS logic

❏ For more fresh feeling, press the Indoor Fan Speed Selector and set

CHAOS mode. In this mode, the wind blows like natural breeze by automatically changing fan speed according to the CHAOS logic.

CHAOS. Each time the button is pressed, the fan speed mode is shifted.

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Operating Instructions

Cooling

Healthy

Dehumidification

Auto

Heating

(Heat pump model only)

To lower the temperature

To raise the temperature

Heating Operation(Heat pump model only)

Press the Start/Stop button. The unit will respond with

beep sound.

Open the door on the Remote Controller. To select Heating Operation, press the Operation Mode Selection button.

Each time the button is pressed, the operation mode is shifted in the direction of the arrow.

Set the temperature higher than the room temperature. The temperature can be set within a range of 16°C~30°C in

1°C.

Set the fan speed again. You can select the fan speed in four steps–low,

medium, high, or CHAOS. Each time the button is pressed, the fan speed mode is shifted.

Natural wind by the CHAOS logic

❏ For more fresh feeling, press the Indoor Fan Speed Selector and set CHAOS mode. In this mode, the

wind blows like natural breeze by automatically changing fan speed according to the CHAOS logic.

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or or

NOTICE

Jet Cool Operation

Operating Instructions

ENGLISH

Press the Start/Stop button. The unit will respond with beep sound.

Press the Jet Cool button to operate the speed cooling mode and the unit will operate in super high fan speed on cooling mode for 30 minutes.

To cancel the Jet Cool mode, press the Jet Cool button or the fan button or the room temperature setting button again and the unit will operate in high fan speed in cooling mode

❏ During the JET COOL function at any moment, the A/C starts to blow the cool air at

extremely high speed for 30 minutes setting the room temp. automatically to 18°C. It is especially used to cool the room temperature quickly in a hot summer.

❏ In order to return to the normal cooling mode from the Jet Cool mode, you just press either

the operation mode selection button, air volume selection or temp. setting button or the JET COOL button again.

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Operating Instructions

AUTO CLEAN

OFF

CANCEL

SET

OFF

CANCEL

SET

2nd F Operation

Press the Start/Stop button. The unit will respond with

beep sound.

Open the door of the Remote Controller and press the 2 button to operate functions printed in blue at bottom of

buttons. (Check the indication of 2 display.) These buttons operate the timer setting as follows:

function goes off in a short time automatically or when the

button is pressed again.

function on Remote Controller

For more details, refer to functions next page.

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Delay OFF Timer Delay ON Timer Delay OFF and ON Timer Delay ON and OFF Timer

with the unit running

OFF

CANCEL

SET

CANCEL

SET

CANCEL

SET

Additional Features

Operating Instructions

Sleep mode

1. Press the Sleep Mode Auto button to set the time you want the unit to stop automatically.

ENGLISH

2. The Timer is programmed in one-hour increments by pressing the Sleep Mode Auto button 1 to 7 times. The sleep mode is available for 1 to 7 times. To alter the time period in steps of 1 hour, press the Sleep Mode Button while aiming at air conditioner.

3. Make sure the Sleep Mode Auto LED lights up. To cancel the Sleep Mode, press the sleep Mode Auto button several times until the star ( ) disappears from the operation display.

The Sleep Mode will be operated at slow fan speed (cooling) or medium fan speed (heat pump

NOTICE

only) for a comfortable sleep.

In sleep mode: Chaos Swing function does not operate.

In cooling mode or healthydehumidification mode:

The temperature will automatically rise by 1°C over the next 30 minutes and by 2°C in 1 hour for a comfortable sleep.

Setting the time

1. Time can be set only when you press the Reset button. Having replacing the batteries, you should press the reset buttons to reset the time. Press the Start/Stop button.

2. Press 2nd F button and check if 2nd F icon is on.

3. Press the Time Setting buttons until the desired time is set.

4. Press the Timer SET button.

NOTICE

Check the indicator for A.M. and P.M.

Delay start/Pre-set stop

1. Make sure the time is set correctly on the display of the remote controller.

2. Press 2nd F button.

3. Press the ON/OFF Timer buttons to turn Timer on or off.

4. Press the Time Setting buttons until the desired time is set.

5. To set the selected time, press the Timer setting button aiming the remote controller at the signal receptor.

To cancel the timer setting

Check if 2nd F icon is off. Press the Timer Cancel button aiming the remote controller at the signal receptor. (The timer lamp on the air conditioner and the display will go out.)

NOTICE

Select one of the following four types of operation.

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ON/OFF

button

Operating Instructions

NOTICE

Vertical Airflow Direction Control

The up/down airflow (Vertical Airflow) can be adjusted by using the remote control.

1. Press the Start/Stop button to start the unit.

2. Press Chaos Swing button and the louvers will swing up and down. Press the Chaos Swing button again to set the vertical louver at the desired airflow direction.

❏ If you press the CHAOS swing button, the horizontal airflow

direction is changed automatically based on the CHAOS algorithm to distribute the air in the room evenly and at the same time to make the human body feel most comfortable, as if enjoying a natural breeze.

❏ Always use the remote control to adjust the up/down

airflow direction. Manually moving the vertical airflow direction louver by hand, could damage the air conditioner.

❏ When the unit is shut off, the up/down airflow direction

louver will close the air outlet vent of the system.

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.

Cooling Model

Operating mode Cooling Cooling Healthy Dehumidification Heating

Indoor FAN Speed

Setting Temperature

High High High High 22°C 22°C 23°C 24°C

Room Temp. ≥ 24°C 21°C ≤ Room Temp. < 24°C Room Temp. < 21°C

Heat pump Model

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.

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High

Speed

Auto restart

Fan speed is on low. Fan speed is on medium. Fan speed is on high.CHAOS Air

NOTICE

Operating Instructions

In case the power comes on again after a power failure, Auto Restarting Operation is the function to operate procedures automatically to the previous operating conditions. So there is no need of activating this function by pressing any key or button. In the initial mode, the fan operates at a low speed and the compressor starts 2.5~3 minutes later. As the compressor starts, the fan speed also resumes its previous setting mode.

ENGLISH

Helpful information

Fan speed and cooling capacity. The cooling capacity indicated in the specification is the value when the fan speed is set to high, and the capacity will be lower at low or medium fan speed. High fan speed is recommended when you wish to cool the room quickly.

Air Circulation Mode

Circulates the room air without cooling or heating.

1. Press the Start/Stop button. The unit will respond with beep sound.

2. Open the door on the Remote Controller. Press the Air Circulation button. Now each time that you press the Indoor Fan Speed Selector, the fan speed is shifted from low to CHAOS and back to low again.

❏

CHAOS Air economizes power consumption and prevents overcooling. The fan speed is automatically changed from high to low or vice versa, depending on the ambient temperature.

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NOTICE

Vertical louver

Horizontal louver

Air filters (behind front panel)

Air outlet ventAir inlet vent

Maintenance and Service

Before performing any maintenance, turn off the main power to the system.

Indoor Unit

Grille, Case, and Remote Control

Turn the system off before cleaning. To clean, wipe with a soft, dry cloth. Do not use bleach or abrasives.

Supply power must be disconnected before cleaning the indoor unit.

Air filters

The air filters behind the front grille should be checked and cleaned once in every 2 weeks or more often if neccessary.

1. Pull the both sides and remove front panel.

2. Pull the filter tab slightly forward to remove the filter.

3. Clean the filter with a vacuum cleaner or warm, soapy water.

• If dirt is conspicuous, wash with a solution of detergent in lukewarm water.

• If hot water (40°C or more) is used, it may be deformed.

4. After washing with water, dry well in the shade.

5. Re-install the air filter.

TRIPLE DEODORIZER filter (Optional)

1. After removing the air filters, pull slightly forward to remove

2. Dry in the sunlight for two hours.

3. Re-install the TRIPLE DEODORIZER filter to the original

Don't touch this NEO PLASMA Filter within 10 seconds after opening he inlet grille, it may cause an electric shock. Never use any of the followings:

• Water hotter than 40°C

• Volatile substances

22 Room Air Conditioner

the TRIPLE DEODORIZER filter.

position.

Could cause deformation and/or discoloration.

Could damage the surfaces of the air conditioner.

Page 23

(Side)

(Rear)

Air intake vents

Air outlet vents

(Side)

(Rear)

Air intake vents

Air outlet vents

Drain Hose

Piping

Drain Hose

NOTICE

Replacement of purifying filter (Optional)

Deodorizer filter

Recomended use period : About 2 years

1. Remove front panel and air filters.

2. Remove air purifying filters.

3. Insert new air purifying filters.

4. Reinsert air filters and close front panel.

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.

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.

Maintenance and Service

ENGLISH

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.

Dirty or clogged coils will reduce the operating efficiency of the system and cause higher operating costs.

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Maintenance and Service

Common Problems and Solutions

Before calling for service

If you have problems with your air conditioner, read the following information and try to solve the problem. If you cannot find a solution, turn off the air conditioner and contact your dealer.

Air conditioner does not operate

1. Ensure that the air conditioner is plugged into a proper outlet.

2. Check the fuse or circuit breaker.

3. Check whether the voltage is unusually high or low.

Air does not feel cold enough on the cooling setting

1. Ensure that the temperature settings are correct.

2. Check to see if the air filter is clogged with dust. If so, replace the filter.

3. Ensure that the air flow from the outside is not obstructed and that there is a clearance of over 20" between the back of the air conditioner and the wall or fence behind it.

4. Close all doors and windows and check for any source of heat in the room.

Before calling for service, please review the following list of common problems and solutions.

The air conditioner is operating normally when:

• You hear a pinging noise. This is caused by water being picked up by the fan on rainy days

or in highly humid conditions. This feature is designed to help remove moisture in the air and improve cooling efficiency.

• You see water dripping from the rear of the unit. Water may be collected in the base pan in

highly humid conditions or on rainy days. This water overflows and drips from the rear of the unit.

• You hear the fan running while the compressor is silent. This is a normal operational

feature.

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Maintenance and Service

Troubleshooting

Check the following points before requesting repairs or service.... If the fault persists, please contact your dealer or service center.

Case Explanation See page

The air conditioner does not operate.

• Check room temperature setting?

• Check if circuit breaker is on?

ENGLISH

The room has a peculiar odor.

It seems that condensation is leaking from the air conditioner.

Air conditioner does not operate for about 3 minutes after turning on.

Does not cool or heat effectively.

The air conditioner operation is noisy.

• Check that this is not a damp smell exuded by the walls, carpet, furniture, or cloth items in the room.

• Check the drain hose is connected tight or if indoor unit is installed even.

• This is the protector of the mechanism.

• Wait about 3 minutes and operation will begin.

• About 3 minutes delay is applied to protect compressor from frequenty on/off.

• Is the air filter dirty? See air filter cleaning instructions.

• Has the temperature been set correctly?

• Are the indoor unit's air inlet or outlet vents obstructed?

• For a noise that sounds like water flowing.

-This is the sound of refrigerant flowing inside

the air conditioner unit.

• For a noise that sounds like the compressed air releasing into atmosphere.

-This is the sound of the dehumidifying water

being processed inside the air conditioning unit.

23, 24

14, 17

Remote Controller display is faint, or no display at all.

Crack sound is heard.

• Are the batteries depleted?

• Are the batteries inserted in the opposite (+) and (-) directions?

• This sound is generated by the expansion/constriction of the front panel, etc. due to changes of temperature.

Owner's Manual 25

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Memo

26 Room Air Conditioner

Page 27

P/No.: MFL41018001

Printed in China

After reading this manual, keep it in a place easily accessible to the user for future reference.