Daikin FVXS25KV1A user guide manual

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DAIKIN ROOM AIR CONDITIONER

OPERATION MANUAL

Enjoy year-round comfort.

MODELS

FVXS25KV1A FVXS35KV1A FVXS50KV1A FVXS25RV1A FVXS35RV1A FVXS45RV1A

CONTENTS

READ BEFORE OPERATION

Safety Precautions ......................................... 2

Names of Parts .............................................. 4

Preparation before Operation......................... 7

OPERATION

AUTO · DRY · COOL · HEAT · FAN

Operation ..................................................... 10

Adjusting the Airflow Direction ..................... 12

POWERFUL Operation ................................ 14

OUTDOOR UNIT QUIET Operation............. 15

ECONO Operation ....................................... 16

TIMER Operation ......................................... 17

WEEKLY TIMER Operation ......................... 19

Note for Multi System................................... 24

CARE

Care and Cleaning ....................................... 26

TROUBLESHOOTING

Troubleshooting ........................................... 29

READ BEFORE OPERATION

Safety Precautions

• Keep this manual where the user can easily find it.

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

• The precautions described herein are classified 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.

Never attempt. Be sure to follow the instructions.

Be sure to establish an earth connection.

• 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.

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

CAUTION

WARNING

• To avoid fire, explosion or injury, do not operate the unit when harmful gases (e.g. flammable or corrosive) 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 fingers, etc., in the air inlet or outlet. Product damage or personal injury 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 shock or fire hazards.

• Do not use flammable spray near the air conditioner, or otherwise fire may result.

• Do not use a refrigerant other than the one indicated on the outdoor unit (R410A) when installing, moving or repairing. Using other refrigerants may cause trouble or damage to the unit, and personal injury.

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

•

Beware of fire 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 use the air conditioner until a qualified service person confirms 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 shock or fire hazards. Please contact your local dealer or qualified personnel for installation and maintenance work.

•

If 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 shock or fire hazards.

•

Be sure to install an earth leakage circuit breaker. Failure to install an earth leakage circuit breaker may result in electric shock or fire.

• 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 shock.

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 the airflow from the unit as this may cause adverse effects.

•

Do not place appliances that produce naked flames in places exposed to the airflow from the unit as this may impair combustion of the burner.

•

Do not block the air inlets nor outlets. Impaired airflow may result in insufficient 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.

• 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 filter 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 fins of the indoor or outdoor units.

•

The appliance is not intended for use by unattended young children or infirm 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 operation by a child may result in impairment of bodily functions and harm health.

• Avoid impacts to the indoor and outdoor units, or otherwise product damage may result.

• Do not place flammable 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 shock or fire

• Do not wash the air conditioner with water, as this may result in electric shock or fire.

•

Do not place water containers (vases, etc.) above the unit, as this may result in electric shock or fire hazards if they should topple over.

•

Do not insert the batteries in the wrong polarity (+/-) orientation as this may result in short circuiting, fire, or battery leakage.

•

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 and turn off the circuit breaker. Otherwise, an electric shock and injury may result.

•

Only connect the air conditioner to the specified power supply circuit. Power supplies other than the one specified may result in electric shock, overheating and fires.

•

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 inside the unit, such animals can cause malfunctions, smoke or fire if they come into contact with electrical parts.

•

Do not place objects around the indoor unit. Doing so may have an adverse influence 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.

FFP008

Installation site

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

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

• Salty environments such as coastal areas.

• Places where sulphide gas occurs such as hot springs.

• Places where snow may block the outdoor unit.

■ Be sure to follow the instructions below.

•

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

System relocation

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

Names of Parts

■ Indoor Unit

512

■ Opening the Front Panel

How to open the front panel: (page 26.)

•

• This setting is

Air outlet selection switch

This setting blows air from upper outlet only.•

This setting automatically decides a blow pattern depending on mode and conditions.

recommended.

• The unit is shipped from the factory with this setting.

13 10

CAUTION

Before opening the front panel, be sure to stop the operation and turn the breaker off. Do not touch the aluminum fins on the inside of the indoor unit, as it may result in injury.

■ Outdoor Unit

■

Indoor Unit

1. Titanium apatite photocatalytic air-purifying filter:

• These filters are attached to the inside of

the air filter.

2. Air outlet

3. Display

4. Front panel

5. Louvers (vertical blades):

• The louvers are inside of the air outlet.

6. Air inlet

7. Air filter

8. Flap (horizontal blade):

9. OPERATION lamp (green)

10. TIMER lamp (yellow):

11. Indoor Unit ON/OFF switch:

• Push this switch once to start operation.

Push once again to stop it.

(page 12.)

(page 17.)

• The operation mode refers to the following table.

Temperature

Mode

COOL AUTO

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

12. Model name plate

13. Signal receiver:

• It receives signals from the remote controller.

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

• Operation start ........ beep-beep

• Settings changed ..... beep

• Operation stop.......... long beep

14. Air outlet selection switch:

15. Room temperature sensor:

•

It senses the air temperature around the unit.

setting

22°C 25°C

Airflow rate

AUTO AUTO

(page 13.)

■

Outdoor Unit

16. Air inlet:

17. Refrigerant piping and inter-unit wiring

18. Drain hose

19. Earth terminal:

• It is inside of this cover.

Appearance of the outdoor unit may differ from some models.

(Back and side)

20. Air outlet

21. Outdoor temperature sensor (back)

22. Model name plate

Names of Parts

■ Remote Controller

1. Signal transmitter:

• It sends signals to the indoor unit.

2. Display:

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

3. FAN setting button:

• It selects the airflow rate setting.

4. POWERFUL button:

POWERFUL operation (page 14.)

5. ON/OFF button:

• Press this button once to start operation. Press once again to stop it.

6. TEMPERATURE adjustment buttons:

• It changes the temperature setting.

7. MODE selector button:

• It selects the operation mode. (AUTO/DRY/COOL/HEAT/FAN) (page 10.)

14 16

8. QUIET button:

OUTDOOR UNIT QUIET operation (page 15.)

9. ECONO button:

ECONO operation (page 16.)

10. SWING button:

• Adjusting the airflow direction (page 12.)

11. WEEKLY/PROGRAM/COPY/BACK/NEXT button:

• WEEKLY TIMER operation (page 19.)

12. SELECT button:

• It changes the ON/OFF TIMER and

WEEKLY TIMER settings. (page 17, 19.)

13. OFF TIMER button:

14. ON TIMER button:

15. TIMER CANCEL button:

• It cancels the timer setting. (page 17, 18.)

• It cannot be used for the WEEKLY TIMER

operation.

16. CLOCK button:

(page 17.)

(page 18.)

(page 8.)

Preparation before Operation

■ 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 operate the remote controller

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

• Do not drop the remote controller. Do not get it wet.

• The maximum distance for communication is about 7m.

■ To fix 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, etc. with the

screws supplied with the holder.

3. Place the remote controller in the remote

controller holder.

Grip both sides of the front cover.

Set.

• To remove, pull it upwards.

Position + and – correctly!

Receiver

Remote controller holder

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 fluorescent 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 shop.

Preparation before Operation

■ To set the clock

1. Press “CLOCK button”.

“ ” is displayed.

“ ” and “ ” blink.

2. Press “SELECT button” to set the current day of the week.

3. Press “CLOCK button”.

“ ” blinks.

4. Press “SELECT button” to set the clock to the present time.

Holding down “ ” or “ ” button rapidly increases or decreases the time display.

5. Press “CLOCK button”.

Point the remote controller at the indoor unit when pushing the buttons when setting the indoor unit’s internal clock.

“ ” blinks.

2, 4

1, 3, 5

NOTE

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

■ Turn the breaker on

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

NOTE

■

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.

• A clogged air filter causes inefficient operation and wastes energy. Clean it once every 2 weeks.

■

Please note

• The air conditioner always consumes a small amount of electricity even while it is not operating.

•

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 Operating conditions If operation is continued out of th is range

COOL

Outdoor temperature:

Indoor temperature: 18-32°C Indoor humidity: 80% max.

HEAT

Outdoor temperature:

Indoor temperature: 10-30°C

DRY

Outdoor temperature:

Indoor temperature: 18-32°C Indoor humidity: 80% max.

〈3MXS〉 –5-46°C 〈RMXS〉 –5-46°C 〈4MXS〉 –10-46°C 〈RXS〉 10-46°C

〈3/4MXS〉 –15-24°C 〈RMXS〉 –15-24°C 〈RXS〉 –15-24°C

〈3MXS〉 –5-46°C 〈RMXS〉 –5-46°C 〈4MXS〉 –10-46°C 〈RXS〉 10-46°C

• 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.

• 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.

Recommended temperature setting

For cooling:26-28°C For heating:20-24°C

OPERATION

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 “MODE selector button” and select an operation mode.

• Each pressing of the button advances

the mode setting in sequence.

:AUTO

:DRY

: COOL

:HEAT

:FAN

2. Press “ON/OFF button”.

• The OPERATION lamp lights green.

2, 3

■ To stop operation

3. Press “ON/OFF button” again.

• The OPERATION lamp goes off.

■ To change the temperature setting

4. Press “TEMPERATURE adjustment button”.

DRY or FAN operation AUTO or COOL or HEAT operation

Press “ ” to raise the temperature and press

“ ” to lower the temperature.

The temperature setting is not variable.

Set to the temperature you like.

■ To change the airflow rate setting

5. Press “FAN setting button”.

DRY operation AUTO or COOL or HEAT or FAN operation

Five levels of airflow rate setting from “ ” to “ ”

The airflow rate setting is not variable.

• Indoor unit quiet operation

When the airflow is set to “ ”, the noise from the indoor unit will become quieter. Use this when making the noise quieter.

The unit might lose capacity when the airflow rate is set to a weak level.

NOTE

■

Notes on HEAT operation

• 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 insufficient, 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 heating operation, it takes some time before the room gets warmer.

• In heating 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 flow out of indoor unit.

■

Note on COOL operation

• 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.

■

Note on DRY operation

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

■

Notes on AUTO operation

• 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.

• If you do not like AUTO operation, manually change the set temperature.

■

Note on airflow rate setting

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

plus “ ” “ ” are available.

Adjusting the Airflow Direction

You can adjust the airflow direction to increase your comfort.

■ To adjust the flap (horizontal blade)

1. Press “SWING button”.

• “ ” is displayed on the LCD and the flap will begin to swing.

2. When the flap has reached the desired position, press “SWING button” once more.

• The flap will stop moving.

• “ ” disappears from the LCD.

1, 2

■ To adjust the louvers (vertical blades)

Hold the knob and move the louvers. (You will find a knob on the left-side and the rightside blades.)

Notes on flap and louvers angle

• Unless “SWING” is selected, you should set the flap at a near-horizontal angle in HEAT operation and at a upward position in COOL or DRY operation to obtain the best performance.

■

ATTENTION

• When adjusting the flap by hand, turn off the unit, and use the remote controller to restart the unit.

• Be careful when adjusting the louvers. Inside the air outlet, a fan is rotating at a high speed.

HEAT

COOL/ DRY

■ Air outlet selection

• Make air outlet selection according to what suits you.

When setting the air outlet selection switch to .

• Air conditioner automatically decides the appropriate blowing pattern depending on the operating mode/situation.

Mode Situation Blowing pattern

COOL

()

HEAT

()

When the operation is activated or when the room is not fully cooled.

When the room has become fully cool, or when 1 hour has passed since turning on the air conditioner.

When the operation is activated or when air emitted is of low temperature.

At times other than the above situations.

Air is emitted from the upper and lower air outlets in order to reach the set temperature quickly.

Air is emitted only from the upper air outlet so that air does not come into direct contact with people and indoor temperature is equalized.

Air is emitted only from the upper air outlet so that air does not come into direct contact with people.

Air is emitted from the upper and lower air outlets so that warm air is spread throughout the whole room.

DRY

()

FAN

()

AUTO

()

Whenever in DRY mode. Air is emitted only from the upper

air outlet so that air does not come into direct contact with people.

Whenever in FAN mode.

Operates in the actual operation mode of the air conditioner according to the descriptions in this table. (COOL or HEAT)

When setting the air outlet selection switch to .

• Regardless of the operating mode or situation, air is emitted from the upper air outlet.

• Use this switch when you do not want air coming out of the lower air outlet. (While sleeping, etc.)

CAUTION

• Do not try to adjust the flap by hand.

• When adjusting by hand, the mechanism may not operate properly or condensation may drip from air outlets.

POWERFUL Operation

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

■ To start POWERFUL operation

1. Press “POWERFUL button”.

• POWERFUL operation ends in 20minutes. Then the system automatically operates again with the previous settings which were used before POWERFUL operation.

• “ ” is displayed on the LCD.

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

■ To cancel POWERFUL operation

2. Press “POWERFUL button”

again.

• “ ” disappears from the LCD.

1, 2

NOTE

■

Notes on POWERFUL operation

• POWERFUL operation cannot be used together with ECONO or 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 the operation stop button causes the settings to be canceled, and the “ ” disappears from the LCD.

• 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 AUTO operation

To maximize the cooling (heating) effect, the capacity of outdoor unit is increased and the airflow rate is fixed to the maximum setting. The temperature and airflow settings are not variable.

• In DRY operation

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

• In FAN operation

The airflow rate is fixed to the maximum setting.

• When using priority-room setting

See note for multi system. (page 24.)

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 night.

■ To start OUTDOOR UNIT QUIET operation

1. Press “QUIET button”.

• “ ” is displayed on the LCD.

■ To cancel OUTDOOR UNIT QUIET operation

2. Press “QUIET button” again.

• “ ” disappears from the LCD.

1, 2

NOTE

■

Notes on OUTDOOR UNIT QUIET operation

• If using a multi system, the OUTDOOR UNIT QUIET operation will work only when this function is set on all operated indoor units. However, if using priority-room setting, see note for multi system. (page 24.)

• This function is available in COOL, HEAT, and AUTO operation. (This is not available in 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.

• If 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 the frequency and fan speed have been already dropped low enough.

ECONO Operation

ECONO operation is a function which enables efficient 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

1. Press “ECONO button”.

• “ ” is displayed on the LCD.

■ To cancel ECONO operation

2. Press “ECONO button” again.

• “ ” disappears from the LCD.

Running current and power consumption

Normal operation

ECONO operation

From start up until set temperature is reached

• 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.

Maximum during normal operation

Maximum during ECONO operation

Time

NOTE

■

Notes on ECONO operation

• ECONO operation can only be set when the unit is running. Pressing the operation stop button causes the settings to be canceled, and the “ ” disappears from the LCD.

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

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

• POWERFUL and ECONO operation cannot be used at the same time. Priority is given to the function of whichever button is pressed last.

• Power consumption may not drop even if ECONO operation is used of the level of power consumption is already low.

1, 2

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 8.)

1. Press “OFF TIMER button”.

“ ” is displayed.

“ ” blinks.

2. Press “SELECT button” 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 setting rapidly.

3. Press “OFF TIMER button” again.

• The TIMER lamp lights yellow.

1, 3

■ To cancel the OFF TIMER operation

4. Press “CANCEL button”.

• The TIMER lamp goes off.

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 using the ON/OFF TIMER to start/stop operation, the actual operation start/stop time

may differ from the time set. (Maximum of about 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.

TIMER Operation

■ To use ON TIME R operation

• Check that the clock is correct. If not, set the clock to the present time. (page 8.)

1. Press “ON TIMER button”.

“ ” is displayed.

“” blinks.

2. Press “SELECT button” 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 setting rapidly.

3. Press “ON TIMER button” again.

• The TIMER lamp lights yellow.

■ To cancel ON TIMER operation

1, 3

4. Press “CANCEL button”.

• The TIMER lamp goes off.

■ To combine ON TIMER and OFF TIMER

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

(Example)

Present time: 11:00 p.m. (The unit operating) OFF TIMER at 0:00 a.m. ON TIMER at 7:00 a.m.

ATTENTION

■

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.

Combined

Display

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

An example of WEEKLY TIMER settings is shown below.

Example:

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

[Monday]

[Tuesday]

[Friday]

[Saturday]

[Sunday]

Make timer settings up to programs 1-4. (see page 20.)

Program 1 Program 2 Program 3 Program 4

ON OFF ON OFF

25˚C 27˚C

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

25˚C

OFF

27˚C

OFF

Use the copy mode to make settings for Tuesday to Friday, because these settings are the same as those for Monday. (see page 22.)

Program 1 Program 2 Program 3 Program 4

ON OFF ON OFF

25˚C 27˚C

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

No timer settings

Make timer settings up to programs 1-4. (see page 20.)

Program 1 Program 2 Program 3 Program 4

ON OFF OFF ON

27˚C 27˚C25˚C

8:00 10:00 19:00 21:00

25˚C

• 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 turnoff time of each day can be set. This will turn off the air conditioner automatically if the user forgets to turn it off.

OFF OFF

27˚C

WEEKLY TIMER Operation

■

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 8.)

Program 1 Program 2 Program 3 Program 4

ON OFF ON OFF

[Monday]

1. Press “ button”.

3. Press “NEXT button”.

5. Press “NEXT button”.

6. Press “SELECT button” to select the desired time.

7. Press “NEXT button”.

 

25˚C 27˚C

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

•

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.

Press the “SELECT button” to select the desired day of the week and reservation number.

•

Pressing the “SELECT button” changes the reservation number and the day of the week.

•

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

• “ ” and “ ” blink.

Press “SELECT button” to select the desired mode.

• Pressing the “SELECT button” changes

“ ” or “ ” setting in sequence.

ON OFF Blank

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.

• The ON/OFF TIMER mode will be set.

• “ ” and the time blink.

• 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 “BACK button”.

• Go to STEP 9 when setting the OFF TIMER.

• The time will be set.

• “ ” and the temperature blink.

3, 5, 7

2, 4, 6

Day and number settings

ON/OFF settings Time settings Temperature settings

8. Press “SELECT button” to

select the desired temperature.

• The temperature can be set between 10°C and 32°C. Cooling: The unit operates at 18°C even if it is set at 10 to 17°C. Heating: The unit operates at 30°C even if it is set at 31 to 32°C.

• To return to the time setting, press “BACK button”.

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

9. Press “NEXT button”.

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

• The temperature will be set and go to the next reservation setting.

• To continue further settings, repeat the procedure from STEP 2.

• The TIMER lamp lights yellow.

10.Press “ button” 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 . (page 22.)

Copy mode

NOTE

■

Notes on WEEKLY TIMER operation

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

•

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 “ ” will disappear from the LCD. When ON/OFF TIMER is up, the WEEKLY TIMER will automatically become active.

• Only the time and set temperature set with the weekly timer are sent with the “ button”.

Set the weekly timer only after setting the operation mode, the fan strength, and the fan direction ahead of time.

• 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 8.)

• The “BACK button” can be used only for the time and temperature settings.

It cannot be used to go back to the reservation number.

WEEKLY TIMER Operation

Copy mode

•

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

Program 1 Program 2 Program 3 Program 4

ON OFF ON OFF

[Monday]

[Tuesday] to [Friday]

25˚C 27˚C

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

COPY

Program 1 Program 2 Program 3 Program 4

ON OFF ON OFF

25˚C 27˚C

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

1. Press “ button”.

Press “SELECT button” to confirm the day of the week to be copied

3. Press “COPY button” to activate copy mode.

• The whole reservation of the selected

day of the week will be copied.

Press “SELECT button” to select the destination day of the week

5. Press “COPY button”.

•

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 “ button” to complete the setting.

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

Setting Displays

1, 6

3, 5

2, 4

Confirmation display Copy display Paste display Normal display

NOTE

■

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 “ button” and change the settings

in the steps of . (page 20.)

Setting mode

Confirming a reservation

■

• The reservation can be confirmed.

Press “ button”.

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

Press “SELECT button” to select the day of the week and the reservation number to be confirmed.

• Pressing the “SELECT button” displays the reservation details.

• To change the confirmed reserved settings, select the reservation number and press “NEXT button”. The mode is switched to setting mode. Go to

Setting mode

Press “ button” to exit confirming mode.

•“ TIMER operation is activated.

• The TIMER lamp lights yellow.

STEP 4. (page 20.)

”

is displayed on the LCD and WEEKLY

Setting Displays

Normal display Confirmation display

To deactivate WEEKLY TIMER operation

■

Press “WEEKLY button” while

“ ” is displayed on the LCD.

• The “ ” will disappear from the LCD.

• The TIMER lamp goes off.

• To reactivate the WEEKLY TIMER operation, press the “WEEKLY button” again.

• If a reservation deactivated with “WEEKLY button” is activated once again, the last reservation mode will be used.

To delete reservations

■

The individual reservation

• Refer to . (page 20.)

Setting mode

When selecting desired mode at STEP 4 in setting mode, select “blank”. The reservation will be deleted.

The reservations for each day of the week

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

Press “ button”.

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

Select the day of the week to be canceled with the “SELECT button”.

Hold the “WEEKLY button” for 5 seconds.

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

Press “ button”.

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

All reservations

Hold “WEEKLY button” for 5 seconds while normal display.

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

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

• All reservations will be deleted.

1, 3, 5

4, 7, 8

2, 6

Note for Multi System

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

■ Selecting the operation mode

A room B room

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

When more than 1 indoor unit is operating, priority is given to the first unit that was turned on. In this case, set the units that are turned on later to the same operation mode as the first unit.

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

C room D room

NOTE

■

Notes on operation mode for multi system

• COOL, DRY and FAN 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 first unit to be turned on.

CAUTION

• Normally, the operation mode in the room where the unit is first run is given priority, but the following situations are exceptions, so please keep this in mind. If the operation mode of the first room is FAN operation, then using HEAT operation in any room after this will give priority to HEAT operation. In this situation, the air conditioner running in FAN operation will go on standby, and the OPERATION lamp will flash.

1. With the priority room setting active.

See “Priority room setting” on the next page.

Outdoor unit

■ 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 night time hours to prevent annoyance to neighbors.

• The NIGHT QUIET mode is activated when the temperature drops 6°C or more below the

highest temperature recorded that day. Therefore, when the temperature difference is less than 4°C, this function will not be activated.

• NIGHT QUIET mode reduces slightly the cooling efficiency of the unit.

■ OUTDOOR UNIT QUIET operation

(page 15.)

1. 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.

2. With the priority room setting active.

See “Priority room setting”.

■ COOL/HEAT mode lock

The COOL/HEAT mode lock requires initial programming during installation. Please consult your authorized 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.

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 retailer or dealer for assistance. The room designated as the priority room takes priority in the following situations;

1. Operation mode priority.

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

Room A is the priority room in the examples.

〈Example〉

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

COOL or DRY or FAN Current operation mode maintained

HEAT

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

2. Priority when POWERFUL operation is used.

Room A is the priority room in the examples.

〈Example〉

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) efficiency of the units in rooms B, C and D may be slightly reduced.

3. Priority when using OUTDOOR UNIT QUIET operation.

Room A is the priority room in the examples.

〈Example〉

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.

Status of room B, C and D when the unit

in room A is in COOL operation

CARE

Care and Cleaning

CAUTION

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

Units

■ Indoor unit and remote controller

1. Wipe them with dry soft cloth.

■ Front panel

1. Open the front panel.

• Slide the two stoppers on the left and right sides inward until they click.

2. Remove the front panel.

• Remove the string.

• Allowing the front panel to fall forward will enable you to remove it.

3. Clean the front panel.

• Wipe it with a soft cloth soaked in water.

• Only neutral detergent may be used.

• In case of washing the front panel with water, dry it with cloth, dry it up in the shade after washing.

String

4. Attach the front panel.

• Insert the front panel into the grooves of the unit (3 places).

• Attach the string to the right, inner-side of the front grille.

• Close the panel slowly.

Place front panel in grooves.

CAUTION

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

• 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.

• For cleaning, do not use hot water above 40°C, benzine, gasoline, thinner, nor other volatile oils, polishing compound, scrubbing brushes, nor other hand stuff.

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

String

Filters

1. Open the front panel. (page 26.)

2. Remove the air filter.

• Press the claws on the right and left of the air filter down slightly, then pull upward.

3. Take off the titanium apatite photocatalytic air-purifying filter.

• Hold the tabs of the frame, and remove the

claws in 4 places.

4. Clean or replace each filter.

See figure.

5. Set the air filter and titanium apatite photocatalytic air-purifying filter as they were and close the front panel.

• Operation without air filter may result in

troubles as dust will accumulate inside the indoor unit.

■ Air filter

1. Wash the air filter with water or clean them with vacuum cleaner.

• If the dust does not come off easily, wash them with neutral

detergent thinned with lukewarm water, then dry them up in the shade.

• It is recommended to clean the air filter every 2 weeks.

Titanium apatite photocatalytic air-purifying filter

Air filter

■ Titanium apatite photocatalytic air-purifying filter

The titanium apatite photocatalytic air-purifying filter can be renewed by washing it with water once every 6 months. We recommend replacing it once every 3 years.

[ Maintenance ]

1. Vacuum dusts, and soak in warm water or water for about 10 to 15

minutes if dirt is heavy.

• Do not remove filter from frame when washing with water.

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

• Since the material is made out of paper, do not wring out the filter when removing water from it.

[ Replacement ]

1. Remove the tabs on the filter frame and replace with a new filter.

• Dispose of the old filter as flammable waste.

NOTE

• Operation with dirty filters: (1) cannot deodorize the air. (2) cannot clean the air. (3) results in poor heating or cooling. (4) may cause odour.

• To order a titanium apatite photocatalytic air-purifying filter, contact the service shop where you bought the air conditioner.

• Dispose of old filters as flammable waste.

Item Part No.

Titanium apatite photocatalytic air-purifying filter (without frame) 1 set

KAF968B42

Check

Check that the base, stand and other fittings 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 fine day to dry out the

inside.

• Press “MODE button” and select “FAN” operation.

• Press “ON/OFF button” and start the operation.

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

3. Clean the air filter and set it again.

4. Take out batteries from the remote controller.

NOTE

• When a multi outdoor unit is connected, make sure the HEAT operation is not being used in other rooms before you use the FAN operation. (page 24.)

TROUBLESHOOTING

Troubleshooting

These cases are not troubles.

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

Case Explanation

Operation does not start soon.

•

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

• When the mode was reselected.

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

The HEAT operation stops suddenly and a flowing sound is heard.

A sound is heard.

The outdoor unit emits water or steam.

Mist comes out of the indoor unit.

The indoor unit gives out odour.

• This is to protect the air conditioner. You should wait for about 3 minutes.

•

The air conditioner is warming up. You should wait for 1 to 4 minutes. (The system is designed to start discharging air only after it has reached a certain temperature.)

• 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 like a flow of water

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

• 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 flows 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 flow of the refrigerant in

the air conditioner is switched over.

■ Ticking 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.

■ In HEAT 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.

■ This happens when the air in the room is cooled into mist by the cold airflow during cooling operation.

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

This happens when smells of the room, furniture, or cigarettes

■

are absorbed into the unit and discharged with the airflow. (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.)

Case Explanation

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

The operation stopped suddenly. (OPERATION lamp is on.)

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

■ 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.

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

• The batteries are dying and the remote controller is malfunctioning. Replace all the batteries with new size AAA alkaline batteries. For details, refer to set the batteries of this manual. (page 7.)

* If the reset button is provided, press the reset button after the

batteries are replaced.

•

Check if the ON/OFF TIMER and the WEEKLY TIMER are set to the same time. Change or disable the settings in the WEEKLY TIMER. (page 20.)

Check again.

Please check again before calling a repair person.

Case Check

The air conditioner does not operate. (OPERATION lamp is off.)

Cooling (Heating) effect is poor.

Operation stops suddenly. (OPERATION lamp flashes.)

An abnormal functioning happens during operation.

• 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?

• Is the air filter clean?

• Is there anything blocking 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 airflow rate and the air direction set appropriately?

• Is the air filter clean? Clean the air filter.

• Is there anything blocking the air inlet or the outlet of the indoor and the outdoor units? 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 flashes, 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 confirm that the lamps flash. 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 flashing after the above steps, there is no malfunction. (page 24.)

• 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.

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 fire. 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 fire. 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.

• Dismantling of the unit, treatment of the refrigerant, oil and eventual other parts, should be done in accordance with the relevant local and national regulations.

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 borne by the user.

Fault diagnosis.

FAULT DIAGNOSIS BY REMOTE CONTROLLER

In the ARC452A series, the temperature display sections on the main unit indicate corresponding codes.

1. When the TIMER CANCEL button is held down for 5 seconds, a “ ” indication flashes on the temperature display section.

TIMER CANCEL button

It cancels the timer setting.

2. Press the TIMER CANCEL button repeatedly until a continuous beep is produced.

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

CODE MEANING

00 NORMAL

SYSTEM

INDOOR UNIT

OUTDOOR

UNIT

UA INDOOR-OUTDOOR UNIT COMBINATION FAULT U0 REFRIGERANT SHORTAGE U2 DROP VOLTAGE OR MAIN CIRCUIT OVERVOLTAGE U4 FAILURE OF TRANSMISSION (BETWEEN INDOOR UNIT AND OUTDOOR UNIT) A1 INDOOR PCB DEFECTIVENESS A5 HIGH PRESSURE CONTROL OR FREEZE-UP PROTECTOR A6 FAN MOTOR FAULT C4 FAULTY HEAT EXCHANGER TEMPERATURE SENSOR C9 FAULTY SUCTION AIR TEMPERATURE SENSOR EA COOLING-HEATING SWITCHING ERROR E1 CIRCUIT BOARD FAULT E5 OL STARTED E6 FAULTY COMPRESSOR START UP E7 DC FAN MOTOR FAULT E8 OVERCURRENT INPUT F3 HIGH TEMPERATURE DISCHARGE PIPE CONTROL F6 HIGH PRESSURE CONTROL (IN COOLING) H0 SENSOR FAULT H6 OPERATION HALT DUE TO FAULTY POSITION DETECTION SENSOR H8 DC CURRENT SENSOR FAULT H9 FAULTY SUCTION AIR TEMPERATURE SENSOR

J3 FAULTY DISCHARGE PIPE TEMPERATURE SENSOR

J6 FAULTY HEAT EXCHANGER TEMPERATURE SENSOR L3 ELECTRICAL PARTS HEAT FAULT L4 HIGH TEMPERATURE AT INVERTER CIRCUIT HEATSINK L5 OUTPUT OVERCURRENT P4 FAULTY INVERTER CIRCUIT HEATSINK TEMPERATURE SENSOR

NOTE

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

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

3P278434-4C

The two-dimensional bar co de is a manufacturing code.

(1608)

M16B095

DAIKIN ROOM AIR CONDITIONER

OPERATION MANUAL

MODELS FVXS60LVMA

FVXS71LVMA FVXS50RV1A

CONTENTS

READ BEFORE OPERATION

Safety Precautions .................................................................. 2

Names of Parts ........................................................................ 4

Preparation before Operation .................................................. 8

OPERATION

AUTO · DRY · COOL · HEAT · FAN Operation ...................... 10

Adjusting the Airﬂ ow Direction ............................................... 12

POWERFUL Operation .......................................................... 14

OUTDOOR UNIT QUIET Operation ...................................... 15

ECONO Operation ................................................................. 16

TIMER Operation ................................................................... 17

WEEKLY TIMER Operation ................................................... 19

CARE

Care and Cleaning ................................................................. 26

TROUBLESHOOTING

Troubleshooting ..................................................................... 30

Safety Precautions

Keep this manual where the user 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.

Never attempt.

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

To avoid ﬁ re, explosion or injury, do not operate the unit when harmful gases (e.g. ﬂ ammable or corrosive) 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 damage or personal injury • 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 shock or ﬁ re hazards. Do not use ﬂ ammable spray near the air conditioner, or otherwise ﬁ re may result.• Do not use a refrigerant other than the one indicated on the outdoor unit (R410A) when installing, moving or • repairing. Using other refrigerants may cause trouble or damage to the unit, and personal injury. To avoid electric shock, do not operate with wet hands.•

Be sure to follow the instructions.

CAUTION

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

Be sure to establish an earth connection.

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 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 shock or ﬁ re hazards. Please contact your local dealer or qualiﬁ ed personnel for installation and maintenance work. If 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 shock or ﬁ re hazards. Be sure to install an earth leakage circuit breaker. Failure to install an earth leakage circuit breaker may result in 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 shock.

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 the 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.

CAUTION

Do not block the 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. 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 • operation by a child may result in impairment of bodily functions and harm health. Avoid impacts 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 shock or ﬁ re.

•

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

•

Do not place water containers (vases, etc.) above the unit, as this may result in electric shock or ﬁ re hazards if they should topple over.

•

Do not insert the batteries in the wrong polarity (+/-) orientation as this may result in short circuiting, ﬁ re, or battery leakage.

•

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 and turn off the circuit breaker. 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 shock, 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 inside the unit, such animals can cause malfunctions, smoke or ﬁ re if they come into 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.

Installation site

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

Places with an oily environment or where steam or soot occurs.• Salty environments such as coastal areas.• Places where sulphide gas occurs such as hot springs.• Places where snow may block the outdoor unit.•

Be sure to follow the instructions below. 

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 and 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 the power supply, be sure to use a separate power circuit dedicated to the air conditioner. 

System relocation

Relocating the air conditioner requires specialized knowledge and skills. Please consult your dealer if relocation  is necessary for moving or remodelling.

FFP008

Names of Parts

Indoor Unit

Front panel

Titanium apatite photocatalytic air-purifying ﬁ lter

These ﬁ lters are attached to the inside of • the air ﬁ lters.

Air ﬁ lter

Louvers (vertical blades)

The louvers are inside of the air outlet.•

Page 12

Flap (horizontal blade) Air outlet

Model name plate

Air inlet

Page 12

OPERATION lamp (green)

TIMER lamp (yellow)

Page 17

Indoor unit ON/OFF switch

Push this switch once to start operation.• Push once again to stop it. The operation mode refers to the following table.•

Mode Temperature setting Airﬂ ow rate

AUTO 25°C AUTO

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

Control panel

Signal receiver

It receives signals from the remote • controller. When the unit receives a signal, • you will hear a short beep.

Operation start• ......... beep-beep

Settings changed• ..... beep

Operation stop• .........long beep

Open the front panel

How to open the front panel: •

Page 26

Air outlet selection switch

Page 13

This setting blows air from upper outlet only.•

This setting automatically decides a blow • pattern depending on mode and conditions. This setting is recommended.• The unit is shipped from the factory with this • setting.

CAUTION

Before opening the front panel, be sure to stop the operation and turn the breaker off.• Do not touch the metal parts on the inside of the indoor unit, as it may result in injury.•

Outdoor Unit

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

Air outlet

Room temperature sensor

It senses the air temperature around the unit.•

Air inlet: (Back and side)

Earth terminal

It is inside of this cover.•

Model name plate Refrigerant piping,

humidifying hose and inter-unit cable

Drain hose

Names of Parts

Remote Controller: ARC452A2

Signal transmitter

Receiver

To use the remote controller, aim the • transmitter at the indoor unit. If there is anything blocking the signals between the unit and the remote controller, such as a curtain, the unit may not operate. Do not drop the remote controller.• Do not get it wet. The maximum distance for • communication is approximately 7m.

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 10

FAN setting button

It selects the airﬂ ow rate setting.•

POWERFUL button

POWERFUL operation •

Page 14

Page 11

ON/OFF button

Press this button once to start • operation.

Press once again to stop it.

Front cover

Open the front cover. •

Page 10

Page 7

Open the front cover

OFF TIMER button

TIMER CANCEL button

It cancels the timer setting.•

Page 17,18

It cannot be used for the • WEEKLY TIMER operation.

MODE selector button

It selects the operation mode. • (AUTO/DRY/COOL/HEAT/FAN)

Page 17

Page 10

ECONO button

ECONO operation •

SWING button

Adjusting the airﬂ ow direction•

QUIET button

OUTDOOR UNIT QUIET • operation

WEEKLY TIMER operation•

Page 15

: WEEKLY button : PROGRAM button : COPY button : BACK button : NEXT button

Page 16

Page 12

Page 19

SELECT button

It changes the ON/OFF • TIMER and WEEKLY TIMER

settings.

Page 17,18,19

ON TIMER button

CLOCK button

Page 18

Page 9

Preparation before Operation

Grip both sides of the front cover.

Set. Pull.

Position and

correctly!

–

Remote controller holder

 To set the batteries

Slide the front cover to take it off.1. Set 2 dry batteries AAA.LR03 (alkaline).2. Set the front cover as before.3.

 To ﬁ x the remote controller holder on the wall

Choose a place from where the signals reach 1.

the unit.

Fix the holder to a wall, a pillar, etc. with the screws supplied with the holder.

Place the remote controller in the remote controller holder.

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.

NOTE

Notes on batteries 

When replacing the batteries, use batteries of the same type, and replace the 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.

•

To set the clock 

“ ” blinks.

Press 1. .

” is displayed.

“

” and “ ” blink.

“

Press 2. to set the current day of the week.

3. .

Press

“ ” blinks.

Press 4. to set the clock to the present time.

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

Press 5. .

Point the remote controller at the indoor unit when pushing the buttons when setting the • indoor unit’s internal clock.

NOTE

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

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. A clogged air ﬁ lter causes inefﬁ cient operation and wastes energy. Clean it once every 2 weeks.

•

Please note 

The air conditioner always consumes a small amount of electricity even while it is not operating.• 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 Operating conditions If operation is continued out of this range

•

A safety device may work to stop the operation. 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.•

COOL

HEAT

DRY

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

Outdoor temperature : 10-46°C Indoor temperature : 18-32°C Indoor humidity : 80% max.

Outdoor temperature : –15-24°C Indoor temperature : 10-30°C

Outdoor temperature : 10-46°C Indoor temperature : 18-32°C Indoor humidity : 80% max.

Recommended temperature setting

For cooling: 26-28°C For heating: 20-24°C

AUTO · DRY · COOL · HEAT · FAN Operation

Control panel

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 

Press 1. and select an operation mode.

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

AUTO DRY COOL HEAT FAN

Press 2. .

“• ” is displayed on the LCD. The OPERATION lamp lights green.•

To stop operation 

Press again.

“• ” disappears from the LCD. The OPERATION lamp goes off.•

To change the temperature setting 

Press or .

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

DRY or FAN operation COOL operation HEAT operation AUTO operation

The temperature setting is not variable.

18-32°C 10-30°C 18-30°C

Press temperature.

to raise the temperature and press to lower the

To change the airﬂ ow rate setting 

Press .

DRY operation AUTO or COOL or HEAT or FAN operation

The airﬂ ow rate setting is not variable.

Indoor unit quiet operation.• When the airﬂ ow is set to “ Use this when making the noise quieter. The unit might lose capacity when the airﬂ ow rate is set to a weak level.

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

”, the noise from the indoor unit will become quieter.

Five levels of airﬂ ow rate setting from “ ” to “ ” plus “ ” and “ ” are available.

NOTE

Notes on HEAT operation 

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 heating operation, it takes some

•

time before the room gets warmer. In heating 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.

•

Note on COOL operation 

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.

Note on DRY 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.

Notes on AUTO operation 

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.

•

If you do not like AUTO operation, manually change the set temperature.•

Note on FAN operation 

This mode is valid for fan only.•

Note on airﬂ ow rate setting 

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

Adjusting the Airﬂ ow Direction

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

Adjusting the upper and lower airﬂ ow direction

To adjust the ﬂ ap (horizontal blade) 

Press 1. .

“• ” is displayed on the LCD and the ﬂ ap will begin to swing.

When the ﬂ ap has reached the desired position, 2.

press once more.

The ﬂ ap will stop moving.• “•

” disappears from the LCD.

Adjusting the right and left airﬂ ow direction

To adjust the louvers (vertical blades) 

Hold the knob and move the louvers. (You will ﬁ nd a knob on the left-side and the right-side blades.)

CAUTION

Do not try to adjust the ﬂ ap by hand.• If the ﬂ ap is adjusted by hand, the mechanism may not operate properly or condensation may drip from the air outlet. If the ﬂ ap is adjusted without using the remote controller, turn off the unit once, and use the remote controller to restart the unit.

Be careful when adjusting the louvers. Inside the air outlet, a fan is rotating at a high speed.

•

While the outdoor unit is not in operation because the indoor temperature becomes higher (or lower) than the set temperature, the ﬂ ap will • come to a stop.

NOTE

Note on ﬂ ap and louvers angle 

Unless “SWING” is selected, you should set the ﬂ ap at a near-horizontal angle in FAN or HEAT • operation and at a upward position in COOL or DRY operation to obtain the best performance.

FAN · HEAT

COOL · DRY

Air outlet selection 

Make air outlet selection according to what suits you.•

When setting the air outlet selection switch to .

Air conditioner automatically decides the appropriate blowing pattern depending on the operating mode/situation.•

Mode

COOL

(

)

When the operation is activated or when the room is not fully cooled.

When the room has become fully cool, or when 1 hour has passed since turning on the air conditioner.

Situation Blowing pattern

Page 5

Air is emitted from the upper and lower air outlets in order to reach the set temperature quickly.

Air is emitted only from the upper air outlet so that air does not come into direct contact with people and indoor temperature is equalized.

HEAT

(

DRY

(

When the operation is activated or when air emitted is of low temperature.

)

At times other than the above situations. Air is emitted from the upper and lower air

Whenever in DRY mode. Air is emitted only from the upper air outlet so

)

Whenever in FAN mode.

Air is emitted only from the upper air outlet so that air does not come into direct contact with people.

outlets so that warm air is spread throughout the whole room.

that air does not come into direct contact with people.

FAN

(

)

AUTO

(

)

Operates in the actual operation mode of the air conditioner according to the descriptions in this table. (COOL or HEAT)

When setting the air outlet selection switch to .

Regardless of the operating mode or situation, air is emitted from the upper air outlet.• Use this switch when you do not want air coming out of the lower air outlet. (While sleeping, etc.)

•

POWERFUL Operation

POWERFUL operation quickly maximizes 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.

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

To cancel POWERFUL operation 

Press again.

“• ” disappears from the LCD.

NOTE

Notes on POWERFUL operation 

POWERFUL operation cannot be used together with ECONO or 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 the operation stop button causes the settings to be canceled, and

•

the “ ” disappears from the LCD. 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 AUTO operation•

To maximize 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.

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 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.

NOTE

Notes on OUTDOOR UNIT QUIET operation 

This function is available in COOL, HEAT and AUTO operation.• (This is not available in FAN and DRY operations.)

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. If 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 the frequency and fan speed have been already dropped

•

low enough.

ECONO Operation

Running current and power consumption

From start up until set temperature is reached

Time

Maximum during normal operation

Maximum during ECONO operation

Normal operation

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.

NOTE

Notes on ECONO operation 

ECONO Operation can only be set when the unit is running. Pressing the operation stop button causes the settings to be canceled, and the • “ ” disappears from the LCD. 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 operations. • POWERFUL and ECONO operation cannot be used at the same time.•

Priority is given to the function of whichever button is pressed last. Power consumption may not drop even if ECONO operation is used of the level of power consumption is already low.

•

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.

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.

Press 1. .

” is displayed.

“

” blinks.

“

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

Press 2. until the time setting reaches the

point you like.

Page 9

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

Press 3. again.

“• ” and setting time are displayed on the LCD. The TIMER lamp lights yellow.•

Control panel

To cancel OFF TIMER operation 

Press .

“• ” and setting time disappear from the LCD. “•

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

The TIMER lamp goes off.•

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 using the ON/OFF TIMER to start/stop operation, the actual operation start/stop time may differ from the time set. •

(Maximum of about 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.

TIMER Operation

Control panel

To use ON TIMER operation 

Check that the clock is correct.• If not, set the clock to the present time.

Press 1. .

” is displayed.

“

” blinks.

“

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

Press 2. 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 setting rapidly.

Page 9

Press 3. again.

“• ” and setting time are displayed on the LCD. The TIMER lamp lights yellow.•

To cancel ON TIMER operation 

Press .

“• ” and setting time disappear from the LCD. “•

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

The TIMER lamp goes off.•

To combine ON TIMER and OFF TIMER 

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

ATTENTION

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.•

(Example)

Present time: 23:00 (The unit operating) OFF TIMER at 0:00 ON TIMER at 14:00

Combined

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 

An example of WEEKLY TIMER settings is shown below. 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.

Program 1 Program 2 Program 3 Program 4

ON OFF ON OFF

25°C 27°C

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

Page 20

25°C

[Tuesday]

[Friday]

[Saturday] No timer settings

[Sunday]

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

Program 1 Program 2 Program 3 Program 4

Make timer settings up to programs 1-4.

Page 22

ON OFF ON OFF

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

25°C

OFF OFF

25°C 27°C

Page 20

Program 1 Program 2 Program 3 Program 4

ON OFF OFF ON

8:00 10:00 19:00 21:00

OFF OFF

27°C

27°C 27°C25°C

27°C

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.

WEEKLY TIMER Operation

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

25°C 27°C

Program 1 Program 2 Program 3 Program 4

ON OFF ON OFF

[Monday]

 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.•

Setting Displays

Day and number settings ON/OFF settings Time settings Temperature settings

Press 1. .

Page 9

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. •

Press 2. to select the desired day of the week

and reservation number.

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

Press 3. .

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

” and “ ” blink.

Press 4. to select the desired mode.

Pressing • changes “ ” or “ ” setting in 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.

Press 5. .

The ON/OFF TIMER operation will be set.• “•

” and the time blink.

Pressing puts the sequence in reverse.

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 mode setting, press • Go to STEP •

9 when setting the OFF TIMER.

Press 7. .

The time will be set. • “ •

” and the temperature blink.

Press 8. to select the desired temperature.

The temperature can be set between 10°C and 32°C.• Cooling: The unit operates at 18°C even if it is set at 10 to 17°C. Heating: 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.•

Press 9. .

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 will be set and go to the next reservation setting.• To continue further settings, repeat the procedure from STEP • The TIMER lamp lights yellow.•

Press

10.

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

Control panel

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

• Refer to Copy mode .

to complete the setting.

Page 22

NOTE

Notes on WEEKLY TIMER operation 

Do not forget to set the clock on the remote controller ﬁ rst. • The day of the week, ON/OFF TIMER operation, time and set temperature (only for ON TIMER operation) 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 “ ” will disappear from the LCD. When ON/OFF TIMER is up, the WEEKLY TIMER will automatically become active.

Only the time and set temperature set with the weekly timer are sent with the

• .

Set the weekly timer only after setting the operation mode, the fan strength, and the fan direction ahead of time. Shutting the breaker off, power failure, and other similar events will render operation of the indoor unit’s internal clock inaccurate. Reset the

•

Page 9

clock. The • can be used only for the mode, time and temperature settings.

It cannot be used to go back to the reservation number.

Page 9

WEEKLY TIMER Operation

Copy mode

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

Program 1 Program 2 Program 3 Program 4

ON OFF ON OFF

[Monday]

Program 1 Program 2 Program 3 Program 4

[Tuesday]

[Friday]

Setting Displays

Confirmation display Copy display Paste display Normal display

25°C 27°C

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

COPY

ON OFF ON OFF

25°C 27°C

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

Press 1. .

Press

to conﬁ rm the day of the week to be copied.

Press 3. to activate copy mode.

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

Press

to select the destination day of the week.

Press 5. .

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.

Press 6. 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 20

 Conﬁ rming a reservation

The reservation can be conﬁ rmed.•

Setting Displays

Normal display Conﬁ rmation display

Press 1. .

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

Press 2. 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 4.

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Press 3. to exit conﬁ rming mode.

“• ” is displayed on the LCD and WEEKLY TIMER operation is activated. The TIMER lamp lights yellow.•

Control panel

WEEKLY TIMER Operation

 To deactivate WEEKLY TIMER operation

Press while “ ” is displayed on the LCD.

“• ” 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.

To delete reservations 

The individual reservation

Press 1. .

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

is activated once again, the last reservation mode

again.

Press 2. to select the day of the week and the

reservation number to be deleted.

3. .

Press

“ • ” and “ ” or “ ” blink.

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

changes ON/OFF TIMER operation.

Press 4. and select “blank”.

ON TIMER OFF TIMER blank

Pressing puts the sequence in reverse.

Press 5. .

The selected reservation is be deleted.•

Press 6. .

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 conﬁ rming or setting reservations.•

Press 1. .

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

Press

to select the day of the week to be deleted.

Hold 3. for about 5 seconds.

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

Press 4. .

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

All reservations

Hold for 5 seconds.

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.•

Care and Cleaning

String

CAUTION

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

Units

Indoor unit and remote controller 

Wipe them with dry soft cloth.

Front panel

Open the front panel.1.

Slide the 2 stoppers on the left and right sides • inward until they click.

Remove the front panel.2.

Remove the 2 strings. • Allowing the front panel to fall forward will enable you to remove it.•

Clean the front panel.3.

Wipe it with a soft cloth soaked in water.• Only neutral detergent may be used.• In case of washing the front panel with water, wipe it with dry soft •

cloth, dry it up in the shade after washing.

Attach the front panel.4.

Insert the front panel into the grooves of the unit (3 places).• Attach the string to the right, inner-side of the front grille.• Close the panel slowly.• Slide the 2 stoppers on the left and right sides •

outward until they click.

Place front panel in grooves.

String

CAUTION

Do not touch the metal parts of the indoor unit. If you touch those parts, this may cause an injury.• 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.• For cleaning, do not use hot water above 40°C, benzine, gasoline, thinner, nor other volatile oils, polishing compound, scrubbing brushes, nor other hand stuff.

•

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

Filters

Open the front panel. 1.

Page 26

Remove the air ﬁ lter.2.

Press the claws on the right and left of the air ﬁ lter down slightly, then pull upward.•

Take off the titanium apatite photocatalytic 3.

air-purifying ﬁ lter.

Hold the tabs of the frame, and remove the claws in 4 places.•

Clean or replace each ﬁ lter.4.

See ﬁ gure.

Set the air ﬁ lter and titanium apatite photocatalytic air-purifying 5.

ﬁ lter as they were and close the front panel.

Titanium apatite photocatalytic air-purifying filter

Air filter

Operation without air ﬁ lter may result in troubles as dust will accumulate inside the indoor unit.• Insert the 2 tabs on the lower side of air ﬁ lter into the body.•

Then, insert the 2 tabs on the upper side into the body.• Insert the tab on the right side into the body.• Close the panel slowly.• Slide the 2 stoppers on the left and right sides • outward until they click.

CAUTION

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

Care and Cleaning

Air Filter

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

If the dust does not come off easily, wash them with neutral detergent thinned with lukewarm water, then dry them up in •

the shade.

It is recommended to clean the air ﬁ lter every 2 weeks.•

CAUTION

When cleaning the air ﬁ lter, be careful not to damage or break the net of the ﬁ lter.•

Titanium apatite photocatalytic air-purifying ﬁ lter

The titanium apatite photocatalytic air-purifying ﬁ lter can be renewed by washing it with water once every 6 months. We recommend replacing it once every 3 years. (Material : paper/polypropylene)

[ Maintenance ]

Vacuum dusts, and soak in warm water or water for about 10 to 1.

15 minutes if dirt is heavy.

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

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

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

[ Replacement ]

Remove the tabs on the ﬁ lter frame and replace with a new ﬁ lter.1.

Dispose of the old ﬁ lter as ﬂ ammable waste.•

NOTE

Operation with dirty ﬁ lters:•

cannot deodorize the air,1) cannot clean the air,2) results in poor heating or cooling,3)

may cause odour.4) To order a titanium apatite photocatalytic air-purifying ﬁ lter, contact the service shop where you bought the air conditioner.• Dispose of old ﬁ lters as ﬂ ammable waste. •

Item Part No.

Titanium apatite photocatalytic air-purifying ﬁ lter (without frame) 2 sets KAF968B42

ATTENTION

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

CHECK

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.

Operate the “FAN only” for several hours on a ﬁ ne day to dry 1.

out the inside.

Press • and select “ ” operation. Press •

and start the operation.

After operation stops, turn off the breaker for the room air 2.

conditioner.

Clean the air ﬁ lter and set it again.

Take out batteries from the remote controller.4.

Troubleshooting

These cases are not troubles.

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

Case Explanation

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.

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

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

A sound is heard.

The air conditioner is warming up. You should wait for 1 to 4 minutes.• (The system is designed to start discharging air only after it has reached a certain temperature.)

The system is taking away the frost on the outdoor unit.• You should wait for about 4 to 12 minutes.

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.

Ticking 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 outdoor unit emits water or steam.

Mist comes out of the indoor unit.

The indoor unit gives out odour.

In HEAT 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.

This happens when the air in the room is cooled into mist by the cold airﬂ ow  during cooling operation.

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

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.)

Case Explanation

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 operation stopped suddenly. (OPERATION lamp is on.)

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

Check again.

Please check again before calling a repair person.

Case Check

The air conditioner does not operate. (OPERATION lamp is off.)

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

The batteries are dying and the remote controller is malfunctioning. Replace all the • batteries with new size batteries, AAA.LR03 (alkaline). For details, refer to set the

batteries of this manual.

Check if the ON/OFF TIMER and the WEEKLY TIMER are set to the same time.• Change or disable the settings in the WEEKLY TIMER.

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?•

Page 8

Page 20

Cooling (Heating) effect is poor.

Operation stops suddenly. (OPERATION lamp ﬂ ashes.)

An abnormal functioning happens during operation.

The ﬂ ap does not start swinging immediately.

Is the air ﬁ lter clean?• Is there anything blocking 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 air direction set appropriately?•

Is the air ﬁ lter clean?• Clean the air ﬁ lter.

Is there anything blocking the air inlet or the outlet of the indoor and the outdoor units?

•

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.

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

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.

Dismantling of the unit, treatment of the refrigerant, oil and eventual other parts, should be done in accordance with the • relevant local and national regulations.

We recommend periodical maintenance.

 Fault diagnosis by remote controller

In the ARC452A series, the temperature display sections on the main unit indicate • corresponding codes.

When 1. is held down for

5 seconds, a “ ” indication ﬂ ashes on the temperature display section.

2. repeatedly until a continuous

Press beep is produced.

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

SYSTEM

INDOOR

UNIT

OUTDOOR

UNIT

CODE

00 UA U0 U2 U4 A1 A5 A6 C4 C9 EA E1 E5 E6 E7 E8

F6 H0 H6 H8 H9

L5 P4

MEANING NORMAL INDOOR-OUTDOOR UNIT COMBINATION FAULT REFRIGERANT SHORTAGE DROP VOLTAGE OR MAIN CIRCUIT OVERVOLTAGE FAILURE OF TRANSMISSION (BETWEEN INDOOR UNIT AND OUTDOOR UNIT) INDOOR PCB DEFECTIVENESS HIGH PRESSURE CONTROL OR FREEZE-UP PROTECTOR FAN MOTOR FAULT FAULTY HEAT EXCHANGER TEMPERATURE SENSOR FAULTY SUCTION AIR TEMPERATURE SENSOR COOLING-HEATING SWITCHING ERROR CIRCUIT BOARD FAULT OL STARTED FAULTY COMPRESSOR START UP DC FAN MOTOR FAULT OVERCURRENT INPUT HIGH TEMPERATURE DISCHARGE PIPE CONTROL HIGH PRESSURE CONTROL (IN COOLING) SENSOR FAULT OPERATION HALT DUE TO FAULTY POSITION DETECTION SENSOR DC CURRENT SENSOR FAULT FAULTY SUCTION AIR TEMPERATURE SENSOR FAULTY DISCHARGE PIPE TEMPERATURE SENSOR FAULTY HEAT EXCHANGER TEMPERATURE SENSOR ELECTRICAL PARTS HEAT FAULT HIGH TEMPERATURE AT INVERTER CIRCUIT HEATSINK OUTPUT OVERCURRENT FAULTY INVERTER CIRCUIT HEATSINK TEMPERATURE SENSOR

NOTE

A short beep and 2 consecutive beeps indicate non-corresponding codes.• To cancel the code display, hold the •

1 minute.

down for 5 seconds. The code display also cancel itself if the button is not pressed for

The two-dimensional bar code is a manufacturing code.

3P278434-5C M16B096

(1608)

Daikin FVXS25KV1A user guide manual

Specifications and Main Features

Frequently Asked Questions

User Manual