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MODELS

FVXG25K2V1B

FVXG35K2V1B

FVXG50K2V1B

DAIKIN ROOM AIR CONDITIONER

OPERATION MANUAL

Features

RADIANT

The HEAT operation, to which the RADIANT operation mode is added, provides a comfortable environment with quiet and currentless heating operation. The surface of the radiant panel is heated up, and the radiated heat warms the surrounding air. The warm air that slowly circulates gently warms the entire room.

Page 12

WEEKLY TIMER

Up to 4 timer settings can be saved for each day of the week according to your family’s life style. The WEEKLY TIMER allows you to set on/off time and the desired temperature.

Page 21

1

ECONO

This function enables effi cient operation by limiting the maximum power consumption. It is useful when using the air conditioner and other electrical devices simultaneously.

Page 18

OUTDOOR UNIT QUIET

OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit. This function is useful when you need to consideration for your neighbourhood.

Page 17

Contents

„

Read before Operatio n

Safety Precautions .........................................

3

Name of Parts ................................................

5

Preparation before Operation ........................

9

„

Operatio n

AUTO · DRY · COOL · HEAT · FAN

Operation ...........................................

11

RADIANT Operation ..........................

12

Temperature Setting ..........................

13

Adjusting the Airfl ow Direction and Rate ............................................

14

POWERFUL Operation ......................

16

OUTDOOR UNIT QUIET

Operation ...........................................

17

ECONO Operation .............................

18

OFF TIMER Operation .......................

19

ON TIMER Operation ........................

20

WEEKLY TIMER Operation ...............

21

„

Multi Connectio n

Note for Multi System ..................................

27

„

Car e

Care and Cleaning .......................................

29

„

Troubleshootin g

Troubleshooting ...........................................

34

2

Safety Precautions

3

• Keep this manual where the operator can easily fi nd it.

Read the precautions in this manual carefully before operating the unit.

The precautions described herein are classifi ed as WARNING and CAUTION. They both contain important information regarding safety. Be sure to observe all precautions without fail.

WARNING

Failure to follow these instructions properly may result in personal injury or loss of life.

CAUTION

Failure to observe these instructions properly may result in property damage or personal injury, which may be serious depending on the circumstances.

Never attempt.

Never wet the air conditioner nor the remote controller with water.

Be sure to follow the instructions.

Be sure to establish an earth connection.

Never touch the air conditioner nor the remote controller with wet hands.

• After reading, keep this manual in a convenient place so that you can refer to it whenever necessary. If the equipment is transferred to a new user, be sure also to hand over the manual.

WARNING

• In order to avoid fi re, explosion or injury, do not operate the unit when harmful, among which fl ammable or corrosive

• gases, are detected near the unit.

Be aware that prolonged, direct exposure to cool or warm air from the air conditioner, or to air that is too cool or too warm can be harmful to your physical condition and health.

• Do not place objects, including rods, your fi ngers, etc., in the air inlet or outlet. Product malfunctioning, product or

• injury damage may result due to contact with the air conditioner’s high-speed fan blades.

Do not attempt to repair, dismantle, reinstall or modify the air conditioner yourself as this may result in water leakage, electric shocks or fi re hazards.

• Do not use fl ammable spray near the air conditioner, or otherwise fi re may result.

• Beware of fi re in case of refrigerant leakage. If the air conditioner is not operating correctly, i.e. not generating cool or warm air, refrigerant leakage could be the cause. Consult your dealer for assistance. The refrigerant within the air conditioner is safe and normally does not leak.

However, in the event of a leakage, contact with a naked burner, heater or cooker may result in generation of noxious gas. Do not longer use the air conditioner until a qualifi ed service person confi rms that the leakage has been repaired.

• Do not attempt to install or repair the air conditioner yourself. Improper workmanship may result in water leakage, electric shocks or fi re hazards. Please contact your local dealer or qualifi ed personnel for installation and maintenance work.

• When the air conditioner is malfunctioning (giving off a burning odour, etc.) turn off power to the unit and contact your local dealer. Continued operation under such circumstances may result in a failure, electric shocks or fi re hazards.

• Be sure to install an earth leakage breaker. Failure to install the earth leakage breaker may result in electric shocks or fi re.

• If the power supply cord is damaged, ask the manufacturer or a qualifi ed electrician for repairs to prevent accidents.

Continued use of the cord may cause electric shock or fi re.

• Be sure to earth the unit. Do not earth the unit to a utility pipe, lightning conductor or telephone earth lead. Imperfect earthing may result in electric shocks.

CAUTION

• Do not use the air conditioner for purposes other than those for which it is intended. Do not use the air conditioner for cooling precision instruments, food, plants, animals or works of art as this may adversely affect the performance, quality and/or longevity of the object concerned.

Do not expose plants or animals directly to airfl ow from the unit as this may cause adverse effects.

Do not place appliances that produce naked fl ames in places exposed to the airfl ow from the unit as this may impair combustion of the burner.

• Do not block air inlets nor outlets. Impaired airfl ow may result in insuffi cient performance or trouble.

• Do not sit on the outdoor unit, put things on the unit, or pull the unit. Doing so may cause accidents, such as falling or toppling down, thus resulting in injury, product malfunctioning, or product damage.

CAUTION

• Do not place objects that are susceptible to moisture directly beneath the indoor or outdoor units. Under certain conditions, condensation on the main unit or refrigerant pipes, air fi lter dirt or drain blockage may cause dripping, resulting in fouling or failure of the object concerned.

• After prolonged use, check the unit stand and its mounts for damage. If they are left in a damaged condition, the unit may fall and cause injury.

• To avoid injury, do not touch the air inlet or aluminium fi ns of the indoor or outdoor units.

• The appliance is not intended for use by unattended young children or infi rm persons. Impairment of bodily functions and harm to health may result.

• Children should be supervised to ensure that they do not play with the unit or its remote controller. Accidental opera-

• tion by a child may result in impairment of bodily functions and harm health.

Do not give impact to the indoor and outdoor units, or otherwise product damage may result.

Do not place fl ammable items, such as spray cans, within 1m of the air outlet.

The spray cans may explode as a result of hot air from the indoor or outdoor units.

Be careful not to let pets urinate on the air conditioner. Urination on the air conditioner may result in electric shocks or fi re.

• To avoid oxygen depletion, ensure that the room is adequately ventilated if equipment such as a burner is used together with the air conditioner.

• Before cleaning, be sure to stop unit operation, turn the breaker off or remove the power cord. Otherwise, an electric

• shock and injury may result.

Only connect the air conditioner to the specifi ed power supply circuit. Power supplies other than the one specifi ed may result in electric shocks, overheating and fi res.

• Arrange the drain hose to ensure smooth drainage. Imperfect drainage may cause wetting of the building, furniture etc.

• Do not place objects in direct proximity of the outdoor unit and do not let leaves and other debris accumulate around the unit. Leaves are a hotbed for small animals which can enter the unit. Once in the unit, such animals can cause malfunctions, smoke or fi re when making contact with electrical parts.

• Do not place objects around the indoor unit.

Doing so may have an adverse infl uence on the performance, product quality, and life of the air conditioner.

This appliance is not intended to be used by persons with reduced physical, sensory or mental capabilities, or with lack of operation knowledge, unless they have been given supervision or instruction concerning the appliance use by person responsible for their safety.

Keep out of children’s reach to ensure that they do not play with the appliance.

• During the RADIANT operation, the surface temperature of the panel will be about 55°C at maximum.

Even after the RADIANT operation is fi nished, the surface temperature of the panel of the air conditioner stays hot for a while. Do not touch the air conditioner until the surface temperature of the panel decreases.

Be careful that children do not touch the surface of the panel.

• To avoid electric shocks, do not operate with wet hands.

• Do not wash the air conditioner with water, as this may result in electric shocks or fi re.

• Do not place water containers (vases etc.) above the unit, as this may result in electric shocks or fi re hazards.

Installation site.

„ To install the air conditioner in the following types of environments, consult the dealer.

• Places with an oily ambient or where steam or soot occurs.

• Salty environment such as coastal areas.

Places where sulfi de gas occurs such as hot springs.

Places where snow may block the outdoor unit.

• The indoor unit is at least 1m away from any television or radio set (unit may cause interference with the picture or sound).

• The drain from the outdoor unit must be discharged to a place of good drainage.

Consider nuisance to your neighbours from noises.

„ For installation, choose a place as described below.

A place solid enough to bear the weight of the unit which does not amplify the operation noise or vibration.

A place from where the air discharged from the outdoor unit or the operation noise will not annoy your neighbours.

Electrical work.

• For power supply, be sure to use a separate power circuit dedicated to the air conditioner.

System relocation.

• Relocating the air conditioner requires specialised knowledge and skills. Please consult the dealer if relocation is necessary for moving or remodeling.

4

Name of Parts

Indoor Unit

Air outlet

Louvers (vertical blades)

• The louvers are inside of the air outlet.

Page 14

Flap (horizontal blade)

Page 14

Radiant panel

Front panel

Air inlet

Room temperature sensor

• It detects the air temperature around the unit.

Display

5

Signal receiver and Indoor unit ON/OFF switch

Signal receiver

• It receives signals from the remote controller.

• When the unit receives a signal, you will hear a beep sound.

Case

Operation start

Setting changed

Operation stop

Sound type beep-beep beep long beep

Indoor unit ON/OFF switch

• Press this switch once to start operation.

Press once again to stop it.

• The operation mode refer to the following table.

Mode

AUTO

Temperature setting

25°C

Airfl ow rate

AUTO

• This switch is useful when the remote controller is missing.

TIMER lamp (yellow)

OPERATION lamp

(green)

RADIANT lamp (red)

Page 12

„

Open the front panel

CAUTION

• The surface of the radiant panel becomes very hot during RADIANT operation. Do not touch the panel of the main unit directly.

After the operation is complete, do not remove or care and clean the panel until the surface temperature of the panel decreases.

Outdoor Unit

• Appearance of the outdoor unit may differ from some models.

Air inlet

(back and side)

Air outlet

Front panel stopper

Strings

Air fi lter (upper)

Air fi lter (lower)

Titanium apatite photocatalytic air-purifying fi lter

• It is inside of air fi lter (lower).

Outdoor temperature sensor (back)

Drain hose

Earth terminal

• It is inside of this cover.

Model name plate

Refrigerant piping and inter-unit wiring

6

7

Name of Parts

Remote Controller

Signal transmitter

Receiver

• To use the remote controller, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote controller, such as a curtain, the unit will not

• operate.

Do not drop the remote controller. Do

• not get it wet.

The maximum distance for communication is approximately 7m.

FAN setting button

• It selects the airfl ow rate setting.

Page 15

RADIANT switching button

• RADIANT operation.

Page 12

Model ARC466A2

Display (LCD)

• It displays the current settings.

(In this illustration, each section is shown with its displays on for the purpose of explanation.)

TEMPERATURE adjustment buttons

• It changes the temperature setting.

Page 13

ON/OFF button

• Press this button once to start operation.

Press once again to stop it.

Page 11

Front cover

• Open the front cover.

Page 8

„

Open the front cover

QUIET button

• OUTDOOR UNIT QUIET operation.

Page 17

POWERFUL button

• POWERFUL operation.

Page 16

OFF TIMER button

Page 19

TIMER CANCEL button

• It cancels the timer setting.

Page 19, 20

• It cannot be used for the

WEEKLY TIMER operation.

SELECT button

• It changes the ON/OFF

TIMER and WEEKLY TIMER settings.

Page 19, 20, 21

MODE selector button

• It selects the operation mode.

(AUTO/DRY/COOL/HEAT/

FAN)

Page 11

ECONO button

• ECONO operation.

Page 18

SWING button

• Adjusting the airfl ow direction.

Page 14

Lamp brightness setting button

Page 9

: WEEKLY button

: PROGRAM button

: COPY button

: BACK button

: NEXT button

• WEEKLY TIMER operation.

Page 21

ON TIMER button

Page 20

CLOCK button

Page 10

8

Preparation before Operation

2

1

3

Remote controller

Screws

Remote controller holder

„

To set the batteries

1.

Slide the front cover to take it off.

2.

Set two dry batteries AAA.LR03 (alkaline).

3.

Set the front cover as before.

„

To fi x the remote controller holder on the wall

1.

Choose a place from where the signals reach the unit.

2.

Fix the holder to a wall, a pillar, or similar location with the screws procured locally.

3.

Place the remote controller in the remote controller holder.

„

To set the luminance of the display

• The luminance of the indoor unit display can be set.

Press

Hi Low

.

Off

9

NOTE

„

Notes on batteries

• When replacing the batteries, use batteries of the same type, and replace both old batteries together.

• When the system is not used for a long time, take the batteries out.

• The batteries will last for approximately 1 year. If the remote controller display begins to fade and the degradation of reception performance occurs within a year, however, replace both batteries with new, size AAA.LR03 (alkaline).

• The attached batteries are provided for the initial use of the system.

The usable period of the batteries may be short depending on the manufactured date of the air conditioner.

„

Notes on remote controller

• Never expose the remote controller to direct sunlight.

• Dust on the signal transmitter or receiver will reduce the sensitivity. Wipe off dust with soft cloth.

• Signal communication may be disabled if an electronic-starter-type fl uorescent lamp (such as inverter-type lamps) is in the room. Consult the shop if that is the case.

• If the remote controller signals happen to operate another appliance, move that appliance to somewhere else, or consult the service shop.

„

Turn the breaker on

• After the power is turned on, the fl ap of the indoor unit opens and closes once to set the reference position.

„

To set the clock

1.

Press .

• “

• “

” is displayed on the LCD.

” and “ ” blink.

2.

Press

3.

Press

to set the current day of the week.

.

• “ ” blinks.

4.

Press to set the clock to the present time.

• Holding down or rapidly increases or decreases the time display.

5.

Press .

• Point the remote controller at the indoor unit when pressing the buttons.

NOTE

„

Note on setting the clock

• If the indoor unit’s internal clock is not set to the correct time, the ON TIMER, OFF TIMER and WEEKLY TIMER will not operate punctually.

10

AUTO · DRY · COOL · HEAT ·

FAN Operation

The air conditioner operates with the operation mode of your choice.

From the next time on, the air conditioner will operate with the same operation mode.

„

To start operation

1.

Press and select an operation mode.

• Each pressing of the button advances the mode setting in sequence.

AUTO DRY COOL

2.

Press .

“ ” is displayed on the LCD.

The OPERATION lamp lights green.

HEAT FAN

Display

„

To stop operation

Press again.

• “ ” disappears from the LCD.

• The OPERATION lamp goes off.

NOTE

MODE

HEAT

COOL

DRY

AUTO

FAN

Notes on each operation mode

• Since this air conditioner heats the room by taking heat from outdoor air to indoors, the heating capacity becomes smaller in lower outdoor temperatures. If the heating effect is insuffi cient, it is recommended to use another heating appliance in combination with the air conditioner.

• The heat pump system heats the room by circulating hot air around all parts of the room. After the start of HEAT operation, it takes some time before the room gets warmer.

• In HEAT operation, frost may occur on the outdoor unit and lower the heating capacity. In that case, the system switches into defrosting operation to take away the frost.

• During defrosting operation, hot air does not fl ow out of indoor unit.

• This air conditioner cools the room by releasing the heat in the room outside.

Therefore, the cooling performance of the air conditioner may be degraded if the outdoor temperature is high.

• When the outdoor temperature is lower than 10°C, do not use COOL operation. If the operation is used when the outdoor temperature is lower than 10°C, the protective function of the main unit works and this disables the operation.

• The computer chip works to rid the room of humidity while maintaining the temperature as much as possible. It automatically controls temperature and airfl ow rate, so manual adjustment of these functions is unavailable.

• In AUTO operation, the system selects an appropriate operation mode (COOL or HEAT) based on the room and outside temperatures and starts the operation.

• The system automatically reselects setting at a regular interval to bring the room temperature to user-setting level.

• This mode is valid for fan only.

11

RADIANT Operation

The RADIANT operation provides a comfortable environment with quiet and currentless heating operation in addition to the HEAT operation mode. The

RADIANT operation has 2 operation modes.

„

To start RADIANT operation

1.

Press and select an HEAT operation.

• Each pressing of the button advances the mode setting in sequence.

HEAT FAN

• “

AUTO DRY

” is displayed on the LCD.

COOL

2.

Press and select a RADIANT operation.

• “ ” is displayed on the LCD.

• The RADIANT lamp lights red.

• This button can be used only in the HEAT operation mode.

• When the RADIANT operation starts, the temperature of the radiant panel increases.

HEAT RADIANT1 RADIANT2

RADIANT operation with HEAT

Auto fan speed

Display

RADIANT operation

Gentle breeze

„

RADIANT1

• Use this operation when the difference between the set temperature and indoor temperature is large, or to warm up the room quickly.

„

RADIANT2

• Use this operation to prioritize quiet and currentless heating operation, or when the noise from RADIANT1 operation bothers you.

The gentle breeze operation starts from the beginning.

CAUTION

• During the RADIANT operation, the surface temperature of the panel will be about 55°C at maximum.

Even after the RADIANT operation is fi nished, the surface temperature of the panel of the air conditioner stays hot for a while. Do not touch the air conditioner until the surface temperature of the panel decreases.

Be careful that children do not touch the surface of the panel.

NOTE

„

Notes on RADIANT operation

• If RADIANT2 operation does not warm up the room, use HEAT or RADIANT1 operation.

• RADIANT1 can be used with POWERFUL operation. RADIANT2 cannot be used with the POWERFUL operation.

• This operation may not warm up the room adequately depending on conditions such as an extremely low outside temperature and lack of adequate performance.

• The RADIANT operation uses the auto fan speed, so the airfl ow rate cannot be changed.

• When the indoor units are connected using a multi system, please refer to “Selecting the operation mode” in note for multi system.

Page 27

12

Temperature Setting

„

To change the temperature setting

Press .

• The displayed items on the LCD will change whenever either one of the buttons is pressed.

COOL operation

HEAT or RADIANT operation

10-30°C

AUTO operation

18-32°C 18-30°C

Press to raise the temperature and press to lower the temperature.

DRY or FAN operation

The temperature setting is not variable.

„

Operating conditions

„

Recommended temperature setting

• For cooling: 26-28°C

• For heating: 20-24°C

„

Tips for saving energy

• Be careful not to cool (heat) the room too much.

Keeping the temperature setting at a moderate level helps save energy.

• Cover windows with a blind or a curtain.

Blocking sunlight and air from outdoors increases the cooling (heating) effect.

• Clogged air fi lters cause ineffi cient operation and waste energy. Clean them once in about every 2 weeks.

„

Notes on the operating conditions

• The outdoor unit consumes some power to have its electric components work even while it is not operating.

Connecting outdoor unit RXG25/35: 1-15W

Other outdoor units: 15-20W

The outdoor unit consumes 40 to 55W of power at the time of compressor preheating.

• If you are not going to use the air conditioner for a long period, for example in spring or autumn, turn the breaker off.

• Use the air conditioner in the following conditions.

MODE

COOL

HEAT or

RADIANT

DRY

Operating conditions

Outdoor temperature : <2/3/4/5MXS> 10-46°C

<RXG> 10-46°C

Indoor temperature : 18-32°C

Indoor humidity : 80% max.

Outdoor temperature : <2MXS> –10-24°C

<3/4/5MXS> –15-24°C

<RXG> –15-24°C

Indoor temperature : 10-30°C

Outdoor temperature : <2/3/4/5MXS> 10-46°C

<RXG> 10-46°C

Indoor temperature : 18-32°C

Indoor humidity : 80% max.

If operation is continued out of this range

• A safety device may work to stop the operation.

(In multi system, it may work to stop the operation of the outdoor unit only.)

• Condensation may occur on the indoor unit and drip.

• A safety device may work to stop the operation.

• A safety device may work to stop the operation.

• Condensation may occur on the indoor unit and drip.

• Operation outside this humidity or temperature range may cause a safety device to disable the system.

13

Adjusting the Airfl ow Direction and Rate

You can adjust the airfl ow direction to increase your comfort.

„

To start auto swing

Upper and lower airfl ow direction

Press .

• “ ” is displayed on the LCD.

• The fl ap (horizontal blade) will begin to swing.

„

To set the fl ap at desired position

• This function is effective while fl ap is in auto swing mode.

Press when the fl ap has reached the desired position.

• “ ” disappears from the LCD.

„

To adjust the louvers at desired position

Hold the knob and move the louvers.

• You will fi nd a knob on the left-side and the right-side blades.

• When the unit is installed in the corner of a room, the direction of the louvers (vertical blades) should be facing away from the wall.

If they face the wall, the wall will block off the wind, causing the

• cooling (or heating) effi ciency to drop.

If the fl ap is in the way, press on the remote controller to move the fl ap out of the way and then adjust the louvers.

14

Adjusting the Airfl ow Direction and Rate

„

To adjust the airfl ow rate setting

Press .

• Each pressing of advances the airfl ow rate setting in sequence.

Middle low Auto Indoor unit quiet Low

High Middle high Middle

• When the airfl ow is set to “ ”, indoor unit quiet operation will start and the noise from the

• unit will become quieter.

In indoor unit quiet operation, the airfl ow rate is set to a weak level.

• In DRY or RADIANT operation, the airfl ow rate setting is not variable.

NOTE

„

Note on the angles of the fl ap

• The fl ap swinging range is the same by all operation. (See the fi gure.)

Upper limit

70°

Lower limit

45°

Stop operation

„

Note on airfl ow rate setting

• At smaller airfl ow rates, the cooling (heating) effect is also smaller.

CAUTION

• Always use a remote controller to adjust the angles of the fl ap. If you attempt to move it forcibly with hand when it is swinging, the mechanism may be broken.

• Be careful when adjusting the louvers.

Inside the air outlet, a fan is rotating at a high speed.

15

POWERFUL Operation

POWERFUL operation quickly maximises the cooling (heating) effect in any operation mode. You can get the maximum capacity.

„

To start POWERFUL operation

Press during operation.

• POWERFUL operation ends in 20 minutes. Then the system automatically operates again

• with the previous settings which were used before POWERFUL operation.

“ ” is displayed on the LCD.

„

To cancel POWERFUL operation

Press

• “

again.

” disappears from the LCD.

[Example]

„

Normal operation

• When you want to get the cooling effect quickly, start the POWERFUL operation.

„

POWERFUL operation

• POWERFUL operation will work for 20 minutes.

„

Back to normal operation

NOTE

„

Notes on POWERFUL operation

• When using POWERFUL operation, there are some functions which are not available.

• POWERFUL operation cannot be used together with RADIANT2, ECONO or OUTDOOR UNIT QUIET operation.

Priority is given to the function of whichever button is pressed last.

• POWERFUL operation can only be set when the unit is running. Pressing from the LCD.

causes the settings to be canceled, and the “ ” disappears

• POWERFUL operation will not increase the capacity of the air conditioner if the air conditioner is already in operation with its maximum capacity demonstrated.

In COOL, HEAT and RADIANT1 operation

To maximise the cooling (heating) effect, the capacity of outdoor unit is increased and the airfl ow rate is fi xed to the maximum setting.

The temperature and airfl ow settings are not variable.

In DRY operation

The temperature setting is lowered by 2.5°C and the airfl ow rate is slightly increased.

In FAN operation

The airfl ow rate is fi xed to the maximum setting.

In AUTO operation

To maximise the cooling (heating) effect, the capacity of outdoor unit is increased and the airfl ow rate is fi xed to the maximum setting.

When using priority room setting

See note for multi system.

Page 27

16

OUTDOOR UNIT QUIET

Operation

OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during the night.

„

To start OUTDOOR UNIT QUIET operation

Press

• “

.

” is displayed on the LCD.

„

To cancel OUTDOOR UNIT QUIET operation

Press

• “

again.

” disappears from the LCD.

[Example]

Using the OUTDOOR UNIT QUIET operation during the night.

• The noise level of the outdoor unit will be lower.

This is convenient when you need to consideration for your neighbourhood.

NOTE

„

Notes on OUTDOOR UNIT QUIET operation

• If using a multi system, OUTDOOR UNIT QUIET operation will work only when the this function is set on all operated indoor units. However, if using priority room setting, refer to note for multi system.

Page 27

• This function is available in COOL, HEAT, and AUTO operation.

This is not available in RADIANT, FAN and DRY operation.

• POWERFUL operation and OUTDOOR UNIT QUIET operation cannot be used at the same time.

Priority is given to the function of whichever button is pressed last.

• Even the operation is stopped using the remote controller or the indoor unit ON/OFF switch when using OUTDOOR UNIT QUIET operation,

“ ” will remain on the remote controller display.

• OUTDOOR UNIT QUIET operation will drop neither the frequency nor fan speed if they have been already dropped low enough.

17

ECONO Operation

ECONO operation is a function which enables effi cient operation by limiting the maximum power consumption value.

This function is useful for cases in which attention should be paid to ensure a circuit breaker will not trip when the product runs alongside other appliances.

„

To start ECONO operation

Press during operation.

• “ ” is displayed on the LCD.

„

To cancel ECONO operation

Press again.

• “ ” disappears from the LCD.

[Example]

Normal operation ECONO operation

• In case the air conditioner and other appliances which require high power consumption are used at same time, a circuit breaker may trip if the air conditioner operate with its maximum capacity.

• The maximum power consumption of the air conditioner is limited by using ECONO operation.

The circuit breaker will hardly trip even if the air conditioner and other appliances are used at same time.

Running current and power consumption

Normal operation

Maximum during normal operation

Maximum during

ECONO operation

• This diagram is a representation for illustrative purposes only.

The maximum running current and power consumption of the air conditioner in ECONO operation vary with the connecting outdoor unit.

ECONO operation

NOTE

„

Notes on ECONO operation

From start up until set temperature is reached

Time

• ECONO operation can only be set when the unit is running. Pressing from the LCD.

causes the settings to be canceled, and the “ ” disappears

• ECONO operation is a function which enables effi cient operation by limiting the power consumption of the outdoor unit (operating frequency).

• ECONO operation functions in AUTO, COOL, DRY, and HEAT operation.

This is not available in RADIANT and FAN operation.

• POWERFUL operation and ECONO operation cannot be used at the same time.

Priority is given to the function of whichever button is pressed last.

• If the level of power consumption is already low, ECONO operation will not drop the power consumption.

18

OFF TIMER Operation

Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination.

„

To use OFF TIMER operation

• Check that the clock is correct.

If not, set the clock to the present time.

Page 10

1.

Press .

” is displayed on the LCD.

” blinks.

• “ ” and day of the week disappear from the LCD.

2.

Press until the time setting reaches the point you like.

• Each pressing of either button increases or decreases the time setting by 10 minutes.

Holding down either button changes the time setting rapidly.

3.

Press again.

“ ” and setting time are displayed on the LCD.

The OPERATION lamp blinks and the TIMER lamp lights yellow. ►

Page 5

Display

„

To cancel OFF TIMER operation

Press .

• “ ” and setting time disappear from the LCD.

• “ ” and day of the week are displayed on the LCD.

NOTE

„

Notes on TIMER operation

• When TIMER is set, the present time is not displayed.

• Once you set ON/OFF TIMER, the time setting is kept in the memory. The memory is canceled when remote controller batteries are replaced.

• When operating the unit via the ON/OFF TIMER, the actual length of operation may vary from the time entered by the user. (Maximum approximately 10 minutes)

„

NIGHT SET mode

• When the OFF TIMER is set, the air conditioner automatically adjusts the temperature setting (0.5°C up in COOL, 2.0°C down in HEAT) to prevent excessive cooling (heating) for your pleasant sleep.

19

ON TIMER Operation

„

To use ON TIMER operation

• Check that the clock is correct.

If not, set the clock to the present time. ►

Page 10

1.

Press .

• “ ” is displayed on the LCD.

• “ ” blinks.

• “ ” and day of the week disappear from the LCD.

2.

Press until the time setting reaches the point you like.

• Each pressing of either button increases or decreases the time setting by 10 minutes.

Holding down either button changes the time setting rapidly.

3.

Press again.

• “ ” and setting time are displayed on the LCD.

• The OPERATION lamp blinks and the TIMER lamp lights yellow.

Page 5

Display

„

To cancel ON TIMER operation

Press .

• “ ” and setting time disappear from the LCD.

• “ ” and day of the week are displayed on the LCD.

„

To combine ON TIMER and OFF TIMER

• A sample setting for combining the 2 timers is shown below.

(Example)

Present time: 23:00 (The unit operating)

OFF TIMER at 0:00

ON TIMER at 14:00

Combined

NOTE

„

In the following cases, set the timer again.

• After a breaker has turned off.

• After a power failure.

• After replacing batteries in the remote controller.

20

21

WEEKLY TIMER Operation

Up to 4 timer settings can be saved for each day of the week. It is convenient if the WEEKLY TIMER is set according to the family’s life style.

„

Using in these cases of WEEKLY TIMER

[Example]

The same timer settings are made for the week from Monday through Friday while different timer settings are made for the weekend.

[Monday]

Make timer settings up to programs 1-4.

Page 22

Program 1

ON

Program 2

OFF

Program 3

ON

25°C

6:00 8:30 17:30

27°C

Program 4

OFF

22:00

ON OFF ON OFF

[Tuesday] to

[Friday]

[Saturday]

[Sunday]

Use the copy mode to make settings for Tuesday to Friday, because these settings are the same as those for Monday.

Page 24

Program 1

ON

Program 2

OFF

Program 3

ON

Program 4

OFF

25°C 27°C

6:00 8:30 17:30 22:00

No timer settings

Make timer settings up to programs 1-4.

Page 22

Program 1 Program 2

ON OFF

25°C 27°C

8:00 10:00

Program 3 Program 4

OFF ON

27°C

19:00 21:00

ON OFF OFF ON

• Up to 4 reservations per day and 28 reservations per week can be set in the WEEKLY TIMER. The effective use of the

• copy mode ensures ease of making reservations.

The use of ON-ON-ON-ON settings, for example, makes it possible to schedule operating mode and set temperature changes. Furthermore, by using OFF-OFF-OFF-OFF settings, only the turn off time of each day can be set. This will turn off the air conditioner automatically if the user forgets to turn it off.

„

To use WEEKLY TIMER operation

Setting mode

• Make sure the day of the week and time are set. If not, set the day of the week and time.

Page 10

[Monday]

Program 1

ON

25°C

Program 2 Program 3

OFF ON

6:00 8:30 17:30

27°C

Program 4

OFF

22:00

Setting Displays

Day and number ON/OFF Time Temperature

1.

Press .

• The day of the week and the reservation number of the current day will be displayed.

• 1 to 4 settings can be made per day.

2.

Press to select the desired day of the week and reservation number.

• Pressing changes the reservation number and the day of the week.

3.

Press .

• The day of the week and reservation number will be set.

• “ ” and “ ” blink.

4.

Press to select the desired mode.

• Pressing changes “ ” or “ ” setting in sequence.

Pressing alternates the following items appearing on the LCD in rotational sequence.

ON TIMER OFF TIMER blank

• In case the reservation has already been set, selecting “blank” deletes the reservation.

• Go to step

9

if “blank” is selected.

• To return to the day of the week and reservation number setting, press .

5.

Press .

• The ON/OFF TIMER mode will be set.

• “ ” and the time blink.

22

WEEKLY TIMER Operation

6.

Press to select the desired time.

• The time can be set between 0:00 and 23:50 in 10 minute intervals.

• To return to the ON/OFF TIMER mode setting, press

• Go to step

9

when setting the OFF TIMER.

.

7.

Press .

• The time will be set.

• “ ” and the temperature blink.

8.

Press to select the desired temperature.

• The temperature can be set between 10°C and 32°C.

COOL or AUTO: The unit operates at 18°C even if it is set at 10 to 17°C.

HEAT or AUTO: The unit operates at 30°C even if it is set at 31 to 32°C.

To return to the time setting, press .

The set temperature is only displayed when the mode setting is on.

9.

Press .

• Be sure to direct the remote controller toward the indoor unit and check for a receiving

• tone and fl ashing the OPERATION lamp.

The temperature is set while in ON TIMER operation, and the time is set while in OFF

TIMER operation.

The next reservation screen will appear.

To continue further settings, repeat the procedure from step

4

.

The TIMER lamp lights yellow. ►

Page 5

Display

10.

Press to complete the setting.

“ ” is displayed on the LCD and WEEKLY TIMER operation is activated.

A reservation made once can be easily copied and the same settings used for another day of the week. Refer to copy mode.

Page 24

NOTE

„

Notes on WEEKLY TIMER operation

• Do not forget to set the clock on the remote controller fi rst.

Page 10

• The day of the week, ON/OFF TIMER mode, time and set temperature (only for ON TIMER mode) can be set with WEEKLY TIMER.

Other settings for ON TIMER are based on the settings just before the operation.

• Both WEEKLY TIMER and ON/OFF TIMER operation cannot be used at the same time. The ON/OFF TIMER operation has priority if it is set while WEEKLY TIMER is still active. The WEEKLY TIMER will go into standby state, and “

ON/OFF TIMER is up, the WEEKLY TIMER will automatically become active.

” will disappear from the LCD. When

• Shutting the breaker off, power failure, and other similar events will render operation of the indoor unit’s internal clock inaccurate. Reset the clock.

Page 10

23

Copy mode

• A reservation made once can be copied to another day of the week. The whole reservation of the selected day of the week will be copied.

Program 1

ON

Program 2 Program 3

OFF ON

Program 4

OFF

[Monday]

25°C 27°C

6:00

Program 1

ON

8:30 17:30

Program 2 Program 3

OFF ON

22:00

Program 4

OFF

[Tuesday]

to

[Friday]

6:00

25°C

8:30 17:30

27°C

22:00

Setting Displays

.

Copy Paste Normal Confi rmation

1.

Press

2.

Press copied.

to confi rm the day of the week to be

3.

Press .

• The whole reservation of the selected day of the week will be copied.

4.

Press week.

to select the destination day of the

5.

Press .

• Be sure to direct the remote controller toward the indoor unit and check for a receiving

• tone and fl ashing the OPERATION lamp.

The reservation will be copied to the selected day of the week. The whole reservation

• of the selected day of the week will be copied.

To continue copying the settings to other days of the week, repeat step

4

and step

5

.

6.

Press

• “

to complete the setting.

” is displayed on the LCD and WEEKLY TIMER operation is activated.

NOTE

„

Note on copy mode

• The entire reservation of the source day of the week is copied in the copy mode.

In the case of making a reservation change for any day of the week individually after copying the content of weekly reservations, press and change the settings in the steps of setting mode.

Page 22

24

WEEKLY TIMER Operation

„

Confi rming a reservation

• The reservation can be confi rmed.

Setting Displays

Normal Confi rmation

1.

Press .

• The day of the week and the reservation number of the current day will be displayed.

2.

Press to select the day of the week and the reservation number to be confi rmed.

• Pressing displays the reservation details.

• To change the confi rmed reserved settings, select the reservation number and press

.

The mode is switched to setting mode. Go to setting mode step

2

. ►

Page 22

3.

Press to exit confi rming mode.

„

To deactivate WEEKLY TIMER operation

Press

LCD.

while “ ” is displayed on the

The “ ” will disappear from the LCD.

The TIMER lamp goes off.

To reactivate the WEEKLY TIMER operation, press

If a reservation deactivated with will be used.

again.

is activated once again, the last reservation mode

CAUTION

• If not all the reservation settings are refl ected, deactivate the WEEKLY TIMER operation once. Then press

WEEKLY TIMER operation.

25

again to reactivate the

„

To delete reservations

The individual reservation

1.

Press .

• The day of the week and the reservation number will be displayed.

2.

Press to select the day of the week and the reservation number to be deleted.

3.

Press

• “

.

” and “ ” or “ ” blink.

4.

Press and select “ blank ”.

• Pressing changes ON/OFF TIMER mode.

Pressing alternates the following items appearing on the LCD in rotational sequence.

• The reservation will be no setting with selecting “blank”.

ON TIMER OFF TIMER blank

5.

Press

.

The selected reservation will be deleted.

6.

Press

.

If there are still other reservations, WEEKLY TIMER operation will be activated.

The reservations for each day of the week

• This function can be used for deleting reservations for each day of the week.

• It can be used while conf irming or setting reservations.

1.

Press to select the day of the week to be deleted.

2.

Hold

for 5 seconds.

The reservation of the selected day of the week will be deleted.

All reservations

Hold for 5 seconds while normal display.

• Be sure to direct the remote controller toward the indoor unit and check for a receiving tone.

• This operation is not effective while WEEKLY TIMER is being set.

• All reservations will be deleted.

26

Note for Multi System

Multi system has one outdoor unit connected to multiple indoor units.

„

Selecting the operation mode

With the priority room setting present but inactive or not present.

When more than one indoor unit is operating, priority is given to the fi rst unit that was turned on.

In this case, set the units that are turned on later to the same operation mode as the fi rst unit.

Otherwise, they will enter the standby state, and the OPERATION lamp will fl ash: this does not indicate malfunction.

A room

C room

B room

D room

Outdoor unit

NOTE

„

Notes on operation mode for multi system

• COOL, DRY and FAN operation may be used at the same time.

• HEAT and RADIANT operation may be used at the same time.

• AUTO operation automatically selects COOL operation or HEAT operation based on the room temperature.

Therefore, AUTO operation is available when selecting the same operation mode as that of the room with the fi rst unit to be turned on.

CAUTION

• Normally, the operation mode in the room where the unit is fi rst run is given priority, but the following situations are exceptions, so please keep this in mind.

If the operation mode of the fi rst room is FAN operation, then using HEAT and RADIANT operation in any room after this will give priority to HEAT and RADIANT operation. In this situation, the air conditioner running in FAN operation will go on standby, and the OPERATION lamp will fl ash.

When the RADIANT operation starts when the FAN operation is used in another room, the FAN operation is switched to the HEAT operation.

27

With the priority room setting active.

Refer to priority room setting on the next page.

„

NIGHT QUIET mode (Available only for COOL operation)

NIGHT QUIET mode requires initial programming during installation. Please consult your retailer or dealer for assistance.

NIGHT QUIET mode reduces the operation noise of the outdoor unit during the nighttime hours to prevent annoyance to neighbours.

• The NIGHT QUIET mode is activated when the temperature drops 5°C or more below the highest temperature recorded that day. Therefore, when the temperature difference is less than 5°C, this function will not be activated.

• NIGHT QUIET mode reduces slightly the cooling effi ciency of the unit.

„

OUTDOOR UNIT QUIET operation

Refer to OUTDOOR UNIT QUIET operation.

Page 17

With the priority room setting present but inactive or not present.

When using the OUTDOOR UNIT QUIET operation feature with the multi system, set all indoor units to OUTDOOR UNIT

QUIET operation using their remote controllers.

When clearing OUTDOOR UNIT QUIET operation, clear one of the operating indoor units using their remote controller.

However OUTDOOR UNIT QUIET operation display remains on the remote controller for other rooms.

We recommend you release all rooms using their remote controllers.

With the priority room setting active.

Refer to priority room setting on the next page.

„

COOL/HEAT mode lock

The COOL/HEAT mode lock requires initial programming during installation. Please consult your authorised dealer for assistance. The COOL/HEAT mode lock sets the unit forcibly to either COOL or HEAT operation. This function is convenient when you wish to set all indoor units connected to the multi system to the same operation mode.

During the COOL mode, the DRY operation can also be used. During the HEAT mode, the RADIANT operation can also be used.

NOTE

• The COOL/HEAT mode lock cannot be activated together with the priority room setting.

„

Priority room setting

The priority room setting requires initial programming during installation. Please consult your authorised dealer for assistance.

The room designated as the priority room takes priority in the following situations.

Operation mode priority

• As the operation mode of the priority room takes precedence, the user can select a different operation mode from other rooms.

[Example]

• Room A is the priority room in the examples.

When COOL operation is selected in room A while operating the following modes in room B, C and D:

Operation mode in room B, C and D Status of room B, C and D when the unit in room A is in COOL operation

COOL or DRY or FAN Current operation mode maintained

HEAT and RADIANT

AUTO

The unit enters standby mode. Operation resumes when the room A unit stops operating.

If the unit is set to COOL operation, it continues. If the unit is set to HEAT operation, it enters standby mode. Operation resumes when the room A unit stops operating.

Priority when POWERFUL operation is used

[Example]

• Room A is the priority room in the examples.

The indoor units in rooms A, B, C and D are all operating. If the unit in room A enters POWERFUL operation, operation capacity will be concentrated in room A. In such a case, the cooling (heating) effi ciency of the units in room B, C and D may be slightly reduced.

Priority when using OUTDOOR UNIT QUIET operation

[Example]

• Room A is the priority room in the examples.

Just by setting the unit in room A to QUIET operation, the air conditioner starts OUTDOOR UNIT QUIET operation.

You don’t have to set all the operated indoor units to QUIET operation.

28

Care and Cleaning

„

Quick reference

How to open / close the front panel

• Slide the front panel stoppers on both sides upward, and open the front panel.

• Close the front panel and lock it using the front panel stoppers.

Cleaning parts

Front panel

• Wipe it with soft cloth soak in water.

If bothered by dirt

Refer to

Page 32

Air fi lter

CAUTION

• Be sure to remove the air fi lters (upper) fi rst, and then the air fi lters (lower).

• Vacuum dust or wash the fi lter.

Once every 2 weeks

Refer to

Page 30

Titanium apatite photocatalytic air-purifying fi lter

• Vacuum dust or replace the fi lter.

[Cleaning] [Replacement]

Once every 6 months Once every 3 years

Refer to

Page 31

Refer to

Page 31

Notes on cleaning

„

For cleaning, do not use the materials as follows.

• Hot water above 40°C.

• Benzine, gasoline, thinner, other volatile oils.

• Polishing compound.

• Scrubbing brushes, other hard stuff.

CAUTION

• Wait for a while before caring and cleaning the unit after RADIANT operation.

The surface temperature of the radiant panel may be high immediately after the operation.

• Before cleaning, be sure to stop the operation and turn the breaker off.

• Do not touch the aluminium fi ns of the indoor unit. If you touch those parts, this may cause an injury.

29

Front panel stopper

Open

Lock

Indoor unit and remote controller

• Wipe them with soft cloth.

If bothered by dirt

„

Air fi lter

1.

Pull out the air fi lters.

• Open the front panel.

• Remove both air fi lters (upper).

• Remove both air fi lters (lower).

Air filter (upper)

1) Pull down

If the dust does not come off easily

• Wash the air fi lters with neutral detergent thinned with lukewarm water, then dry them up in the shade.

• Be sure to remove the titanium apatite photocatalytic air-purifying fi lter. Refer to titanium apatite photocatalytic air-purifying fi lter on the next page.

Air filter (lower)

2) Pull up

2.

Wash the air fi lters with water or clean them with vacuum cleaner.

• It is recommended to clean the air fi lters every

2 weeks.

3.

Set the fi lters as they were and close the front panel.

• Close the front panel and lock it by sliding the front panel stoppers on both sides downward.

Front panel stopper

Lock

CAUTION

• Do not touch the aluminium fi ns by bare hand at the time of dismounting or mounting the fi lter.

30

Care and Cleaning

„

Titanium apatite photocatalytic air-purifying fi lter

1.

Take off the titanium apatite photocatalytic air-purifying fi lter.

• Open the front panel and pull out the air fi lters.

• Hold the recessed parts of the frame and unhook the

4 claws.

[Replacement]

Remove the tabs on the fi lter frame and replace with a new fi lter.

2.

Clean or replace the titanium apatite photocatalytic airpurifying fi lter.

[Maintenance]

2-1 Vacuum dusts, and soak in lukewarm water or water for about 10 to 15 minutes if dirt is heavy.

• Do not remove the fi lter from frame when washing with water.

• Do not throw away the fi lter frame. Reuse the fi lter frame when replacing the titanium apatite photocata-

• lytic air-purifying fi lter.

Dispose of the old fi lter as non-fl ammable waste.

3.

Set the fi lters as they were and close the front panel.

• Close the front panel and lock it by sliding the front panel stoppers on both sides downward.

2-2 After washing, shake off remaining water and dry in the shade.

• Since the material is made out of polyester, do not wring out the fi lter when removing water from it.

NOTE

• Operation with dirty fi lters:

– cannot deodorise the air,

– cannot clean the air,

– results in poor heating or cooling,

– may cause odour.

• Dispose of old fi lters as non-fl ammable waste.

• To order titanium apatite photocatalytic air-purifying fi lter contact to the service shop there you bought the air conditioner.

Item

Part No.

Titanium apatite photocatalytic air-purifying fi lter

(without frame) 1 set

KAF970A46

31

„

Removing the front panel

1.

Remove the front panel.

• Open the front panel.

• Remove the front panel securing strings (2 positions) from the front grille.

2.

Clean the front panel.

• Wipe it with a soft cloth soaked in water.

• Only neutral detergent may be used.

3.

Attach the front panel.

• Insert the front panel into the lower front grille as shown in the fi gure, and then secure both sides of the panel using the strings.

• Remove the front panel from the air conditioner.

• Close the front panel and lock it by sliding the front panel stoppers on both sides downward.

CAUTION

• When removing or attaching the front panel, use a robust and stable stool and watch your steps carefully.

• When removing or attaching the front panel, support the panel securely with hand to prevent it from falling.

• After cleaning, make sure that the front panel is securely fi xed.

32

Care and Cleaning

„

Check the units

„ Check that the base, stand and other fi ttings of the outdoor unit are not decayed or corroded.

„ Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit.

„ Check that the drain comes smoothly out of the drain hose during COOL or DRY operation.

• If no drain water is seen, water may be leaking from the indoor unit. Stop operation and consult the service shop if this is the case.

„

Before a long idle period

1.

Operate the FAN only for several hours on a fi ne day to dry out the inside.

• Press and select “ ” operation.

• Press and start the operation.

2.

After operation stops, turn off the breaker for the room air conditioner.

3.

Clean the air fi lters and set them again.

4.

Take out batteries from the remote controller.

• When a multi outdoor unit is connected, make sure the HEAT operation is not used at the other room before you use the

FAN operation.

Page 27

„

We recommend periodical maintenance

• In certain operating conditions, the inside of the air conditioner may get foul after several seasons of use, resulting in poor performance. It is recommended to have periodical maintenance by a specialist aside from regular cleaning by the user.

• For specialist maintenance, contact the service shop where you bought the air conditioner.

• The maintenance cost must be born by the user.

„

Important information regarding the refrigerant used

• This product contains fl uorinated greenhouse gases covered by the Kyoto Protocol.

Refrigerant type:R410A

GWP

(1)

value:1975

(1) GWP = global warming potential

Periodical inspections for refrigerant leaks may be required depending on European or local legislation. Please contact your local dealer for more information.

33

Troubleshooting

„

These cases are not troubles.

• The following cases are not air conditioner troubles but have some reasons. You may just continue using it.

Indoor unit

The air conditioner stops generating airfl ow during operation.

• Once the set temperature is reached, the airfl ow rate is reduced and operation stopped in order to avoid generating cool airfl ow (during heating) or in order to keep the humidity from rising (during cooling). Operation will resume automatically when the indoor temperature rises or falls.

Operation does not start soon.

„

When “ON/OFF” button was pressed soon after operation was stopped.

„

When the mode was reselected.

This is to protect the air conditioner.

You should wait for about 3 minutes.

The HEAT operation stops suddenly and a fl owing sound is heard.

• The outdoor unit is taking away the frost. The HEAT operation starts after the frost on the outdoor unit is removed. You should wait for about 4 to 12 minutes.

A sound is heard.

„

A sound like a fl ow of water

• This sound is generated because the refrigerant in the air conditioner is fl owing.

• This is a pumping sound of the water in the air conditioner and heard when the water is pumped out from

• the air conditioner in cooling or drying operation.

The refrigerant fl ows in the air conditioner even if the air conditioner is not working when the indoor units in other rooms are in operation.

„

Blowing sound

• This sound is generated when the fl ow of the refrigerant in the air conditioner is switched over.

„

Pinging sound

• This sound is generated when the size of the air conditioner slightly expands or shrinks as a result of temperature changes.

„

Clicking sound during operation or idle time

• This sound is generated when the refrigerant control valves or the electrical parts operate.

„

Clopping sound

• This sound is heard from the inside of the air conditioner when the exhaust fan is activated while the room doors are closed. Open the window or turn off the exhaust fan.

The fl ap does not start swing immediately.

• The air conditioner is adjusting the fl ap position. The fl ap will start moving soon.

Radiant panel surface temperature

• During RADIANT1 or RADIANT2 operation, the surface temperature of the panel will be about 55°C at maximum; this is the normal condition.

Outdoor unit

The outdoor unit emits water or steam.

„

In HEAT or RADIANT operation

• The frost on the outdoor unit melts into water or steam when the air conditioner is in defrost operation.

„

In COOL or DRY operation

• Moisture in the air condenses into water on the cool surface of outdoor unit piping and drips.

34

Troubleshooting

• Troubleshooting measures are classifi ed into the following two types on a remedial basis.

Take an appropriate measure according to the symptom.

Not trouble

• These cases are not troubles.

Operation stopped suddenly.

(OPERATION lamp fl ashes.)

Check

• Please check again before calling a repair person.

The air conditioner does not operate.

(OPERATION lamp is off.)

• Hasn’t a breaker turned off or a fuse blown?

• Isn’t it a power failure?

• Are batteries set in the remote controller?

• Is the timer setting correct?

• Are the air fi lters clean?

Clean the air fi lters.

• Is there anything to block the air inlet or the outlet of the indoor and the outdoor units?

• Turn the breaker off and take all obstacles away. Then turn it on again and try operating the air conditioner with the remote controller. If the lamp still fl ashes, call the service shop where you bought the air conditioner.

• Are operation modes all the same for indoor units connected to outdoor units in the multi system?

If not, set all indoor units to the same operation mode and confi rm that the lamps fl ash.

Moreover, when the operation mode is in AUTO, set all indoor unit operation modes to COOL or HEAT for a moment and check again that the lamps are normal. If the lamps stop fl ashing after the above steps, there is no malfunction.

Page 27

Cooling (Heating) effect is poor.

• Are the air fi lters clean?

• Is there anything to block the air inlet or the outlet of the indoor and the outdoor units?

• Is the temperature setting appropriate?

• Are the windows and doors closed?

• Are the airfl ow rate and the airfl ow direction set appropriately?

An abnormal functioning happens during operation.

• The air conditioner may malfunction with lightning or radio waves. Turn the breaker off, turn it on again and try operating the air conditioner with the remote controller.

The surface temperature and condition of the radiant panel are abnormal.

„

The radiant panel is not warmed up during

RADIANT1 or RADIANT2 operation.

„

The HEAT operation is used independently, but the radiant panel is hot.

„

The COOL operation is used, but the radiant panel is cold, frosted, and/or dewy.

„

The operation has stopped, but the radiant panel is hot or the OPERATION lamp (green) is blinking.

• Consult the service shop or the dealer where you bought your air conditioner. (Applicable to only multi-connections)

35

Hot air does not fl ow out soon after the start of HEAT operation.

• The air conditioner is warming up. You should wait for

1 to 4minutes. (The system is designed to start discharging air only after it has reached a certain temperature.)

The outdoor fan rotates while the air conditioner is not in operation.

„

After operation is stopped

• The outdoor fan continues rotating for another

60 seconds for system protection.

„

While the air conditioner is not in operation

• When the outdoor temperature is very high, the outdoor fan starts rotating for system protection.

The ON/OFF TIMER does not operate according to the settings.

• Check if the ON/OFF TIMER and the WEEKLY TIMER are set to the same time.

Change or deactivate the settings in the WEEKLY

TIMER.

Page 21

The indoor unit gives out odour.

• This happens when smells of the room, furniture, or cigarettes are absorbed into the unit and discharged with the airfl ow.

(If this happens, we recommend you to have the indoor unit washed by a technician. Consult the service shop where you bought the air conditioner.)

Operation stopped suddenly.

(OPERATION lamp is on.)

• For system protection, the air conditioner may stop operating on a sudden large voltage fl uctuation. It automatically resumes operation in about 3 minutes.

Mist comes out of the indoor unit.

• This happens when the air in the room is cooled into

• mist by the cold airfl ow during COOL operation.

This is because the air in the room is cooled by the heat exchanger and becomes mist during defrost operation.

Remote controller does not work properly.

„

No remote controller signals are displayed.

„

The remote controller sensitivity is low.

„

The display is low in contrast or blacked out.

„

The display runs out of control.

• The batteries are dying and the remote controller is malfunctioning. Replace all the batteries with new, size

AAA.LR03 (alkaline). For details, refer to set the batteries of this manual.

Page 9

Operation stopped during COOL operation.

(OPERATION lamp fl ashes.)

• When the outdoor temperature is lower than 10°C, do not use COOL operation. If the operation is used when the outdoor temperature is lower than 10°C, the protective function of the main unit works and this disables the operation.

Turn the bleaker off and take all obstacles away. Then turn it on again and try operating the air conditioner with the remote controller. If the lamp still fl ashes, call the service shop where you bought the air conditioner.

36

Troubleshooting

„

Call the service shop immediately

WARNING

„

When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker off.

• Continued operation in an abnormal condition may result in troubles, electric shocks or fi re.

• Consult the service shop where you bought the air conditioner.

„

Do not attempt to repair or modify the air conditioner by yourself.

• Incorrect work may result in electric shocks or fi re.

• Consult the service shop where you bought the air conditioner.

If one of the following symptoms takes place, call the service shop immediately.

The power cord is abnormally hot or damaged.

An abnormal sound is heard during operation.

The safety breaker, a fuse, or the earth leakage breaker cuts off the operation frequently.

A switch or a button often fails to work properly.

There is a burning smell.

Water leaks from the indoor unit.

Turn the breaker off and call the service shop.

„

After a power failure

• The air conditioner automatically resumes operation in about 3 minutes. You should just wait for a while.

„

Lightning

• If lightning may strike the neighbouring area, stop operation and turn the breaker off for system protection.

„

Disposal requirements

Your product and the batteries supplied with the controller are marked with this symbol. This symbol means that electrical and electronic products and batteries shall not be mixed with unsorted household waste.

For batteries, a chemical symbol can be printed beneath the symbol. This chemical symbol means that the battery contains a heavy metal above a certain concentration. Possible chemical symbols are:

„ Pb: lead (>0.004%)

Do not try to dismantle the system yourself: the dismantling of the product, treatment of the refrigerant, of oil and of other parts must be done by a qualifi ed installer in accordance with relevant local and national legislation.

Units and waste batteries must be treated at a specialised treatment facility for re-use, recycling and recovery.

By ensuring correct disposal, you will help to prevent potential negative consequences for the environment and human health.

Please contact the installer or local authority for more information.

37

„

Fault diagnosis by remote controller

• The remote controller can receive from the indoor unit a corresponding error code according to the fault.

1.

When is held down for 5 seconds, a

“ ” indication blinks on the temperature display section.

2.

Press repeatedly until a continuous beep is produced.

• The code indication changes as shown below, and notifi es with a long beep.

SYSTEM

INDOOR

UNIT

OUTDOOR

UNIT

CODE

00

U0

U2

U4

A1

A5

A6

A9

H9

J3

J6

L4

F3

H0

H6

H8

L5

P4

CE

C4

C9

EA

E1

E5

E6

E7

MEANING

NORMAL

REFRIGERANT SHORTAGE

OVER-VOLTAGE DETECTION

SIGNAL TRANSMISSION ERROR (BETWEEN INDOOR AND OUTDOOR UNIT)

INDOOR UNIT PCB ABNORMALITY

HEATING PEAK-CUT CONTROL OR FREEZE-UP PROTECTION (PERCEPTIBILITY BY

THERMISTOR FOR INDOOR HEAT EXCHANGER)

FAN MOTOR (DC MOTOR) ABNORMALITY

RADIANT PANEL TEMPERATURE RISE OR MOTOR OPERATED VALVE ABNORMALITY

FREEZE-UP PROTECTION (PERCEPTIBILITY BY THERMISTOR FOR RADIANT PANEL)

RADIANT PANEL THERMISTOR ABNORMALITY

INDOOR HEAT EXCHANGER THERMISTOR ABNORMALITY

ROOM TEMPERATURE THERMISTOR ABNORMALITY

FOUR WAY VALVE ABNORMALITY

OUTDOOR UNIT PCB ABNORMALITY

OL ACTIVATION (COMPRESSOR OVERLOAD)

COMPRESSOR LOCK

DC FAN LOCK

DISCHARGE PIPE TEMPERATURE CONTROL

COMPRESSOR SYSTEM SENSOR ABNORMALITY

POSITION SENSOR ABNORMALITY

DC VOLTAGE / CURRENT SENSOR ABNORMALITY

OUTDOOR TEMPERATURE THERMISTOR ABNORMALITY

DISCHARGE PIPE THERMISTOR ABNORMALITY

OUTDOOR HEAT EXCHANGER THERMISTOR ABNORMALITY

RADIATION FIN TEMPERATURE RISE

OUTPUT OVERCURRENT DETECTION

RADIATION FIN THERMISTOR ABNORMALITY

NOTE

• A short beep and two consecutive beeps indicate non-corresponding codes.

• To cancel the code display, hold for 5 seconds. The code display also cancel itself if the button is not pressed for 1 minute.

38

Troubleshooting

„

LED ON OUTDOOR UNIT PCB

3MXS, 4MXS, 5MXS series

GREEN

MICROCOMPUTER

NORMAL

LED-A

RED

MALFUNCTION DETECTION

LED1 LED2 LED3 LED4 LED5 DIAGNOSIS

NORMAL CHECK INDOOR UNIT

HIGH PRESSURE PROTECTOR WORKED OR FREEZE-UP IN

OPERATING UNIT OR STAND-BY UNIT

∗ OVERLOAD RELAY WORKED OR HIGH DISCHARGE PIPE

TEMPERATURE

FAULTY COMPRESSOR START

INPUT OVERCURRENT

THERMISTOR OR CT ABNORMALITY

HIGH TEMPERATURE SWITCHBOX

HIGH TEMPERATURE AT INVERTER CIRCUIT HEATSINK

OUTPUT OVERCURRENT

REFRIGERANT SHORTAGE

LOW VOLTAGE TO MAIN CIRCUIT OR MOMENTARY VOLTAGE

LOSS

REVERSING SOLENOID VALVE SWITCHING FAILURE

FAN MOTOR FAULT

− − − −

− − − −

[NOTE 1]

POWER SUPPLY FAULT OR [NOTE 2]

NOTE: The LED5 is only available in the 5M series.

GREEN NORMALLY FLASHING

RED NORMALLY OFF

ON

FLASHING

OFF

IRRELEVANT

„

LED ON OUTDOOR UNIT PCB

2MXS series

GREEN

MICROCOMPUTER NORMAL

LED-A DIAGNOSIS

NORMAL CHECK INDOOR UNIT

[NOTE 1]

POWER SUPPLY FAULT OR [NOTE 2]

GREEN NORMALLY FLASHING

ON

FLASHING

OFF

NOTE

1. Turn the power off and then on again. If the LED display recurs, the outdoor unit PCB is faulty.

2. Diagnosis marked

* Do not apply to some cases. For details, refer to the service guide.

39

„

MEMO

40

Quick Reference

Two-dimensional bar code is a code for manufacturing.

3P276869-1 M10B205

(1103) HT

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