Daikin CTXU25G2V1B, CTXU35G2V1B, CTXU42G2V1B, CTXU50G2V1B Operation manuals

00_CV_3P232703-1.fm Page 1 Tuesday, August 12, 2008 5:21 PM

DAIKIN ROOM AIR CONDITIONER

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MODELS

CTXU25G2V1B
CTXU35G2V1B
CTXU42G2V1B
CTXU50G2V1B

01_EN_3P232703-1.fm Page 1 Thursday, December 18, 2008 5:51 PM

CONTENTS

READ BEFORE OPERATION

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

Name of Parts.................................................................... 4

Preparation before Operation ............................................6

OPERATION

AUTO · DRY · COOL · HEAT · FAN Operation .................8

Adjusting the Airflow Direction......................................... 10

HUMID HEAT Operation..................................................12

FRESH AIR SUPPLY VENTILATION..............................14

COMFORT AIRFLOW and

INTELLIGENT EYE Operation.........................................15

POWERFUL and

OUTDOOR UNIT QUIET Operation ................................ 17

ECONO Operation........................................................... 18

English

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

WEEKLY TIMER Operation............................................. 21

Note for Multi System ......................................................26

CARE

Care and Cleaning........................................................... 27

TROUBLE SHOOTING

Trouble Shooting .............................................................31

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READ BEFORE OPERATION

Safety Precautions

• Keep this manual where the operator can easily find them.

• 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.

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

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

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

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

CAUTION

WARNING

• In order to avoid fire, explosion or injury, do not operate the unit when harmful, among which flammable or corrosive
gases, are detected near the unit.

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

• Do not place objects, including rods, your fingers, etc., in the air inlet or outlet. Injury may result due to contact with the air
conditioner’s highspeed fan blades.

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

• 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
longer 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 shocks
or fire hazards. Please contact your local dealer or qualified personnel for installation and maintenance work.

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

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

CAUTION

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

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

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

• Do not block air inlets nor outlets. Impaired air flow may result in insufficient performance or trouble.

• Do not sit or place objects on the outdoor unit. Falling yourself or falling objects could cause injury.

• 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 left in a damaged condition, the unit may fall and cause
injury.

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• To avoid injury, do not touch the air inlet or aluminium fins of the unit.

• 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.

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

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

• Only connect the air conditioner to the specified power supply circuit. Power supplies other than the one specified may result in
electric shocks, 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 in the unit, such animals can cause malfunctions, smoke or
fire when making contact with electrical parts.

• 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.

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

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

• Do not place water containers (flower vases, etc.) on the unit, as this may result in electric shocks or fire.

Installation site.

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

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

• Salty environment such as coastal areas.

• Places where sulfide gas occurs such as hot springs.

• Places where snow may block the outdoor unit.

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

Consider nuisance to your neighbours from noises.

 For installation, choose a place as described below.

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

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

Electrical work.

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

System relocation.

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

remodeling.

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Name of Parts

 Indoor Unit

1. Air filter

2. Titanium apatite photocatalytic
air-purifying filter:

• These filters are attached to the inside of the air

filters.

3. Air inlet

4. Front panel

5. Panel tab

6. Room temperature and humidity sensors:

• It senses the air temperature and humidity around

the unit.

7. INTELLIGENT EYE sensor: (page 15.)

8. Control panel

9. Air outlet

10. Flaps (horizontal blades): (page 10.)

11. Louvers (vertical blades):

• The louvers are inside of the air outlet. (page 10.)

12. Air supply filter (gray): (page 29.)

13. Indoor Unit ON/OFF switch: (page 8.)

• Push this switch once to start operation.

Push once again to stop it.

•

The operation mode refers to the following table.

Mode Temperature setting Airflow rate

AUTO 25°C AUTO

• This switch is useful when the remote controller is

missing.

14. Multi-monitor lamp: (page 8.)

• The lamp color changes according to the operation.

• AUTO ................................................... Blue/Red

• DRY...................................................... Green

• COOL ................................................... Blue

• HEAT.................................................... Red

• FAN ...................................................... White

15. TIMER lamp (yellow): (page 19.)

16. INTELLIGENT EYE lamp (green): (page 15.)

17. Signal receiver:

• It receives signals from the remote controller.

• When the unit receives a signal, you will hear a

short beep.

• Operation star t .................................... beep-beep

• Settings changed ................................. beep

• Operation stop ..................................... beeeeep

 Outdoor Unit

18. Air inlet: (Back and side)

19. Refrigerant piping, humidifying hose and
inter-unit cables

20. Drain hoses

21. Earth terminals:

• It is inside of this cover.

22. Air outlet

23. Humidifying hoses

24. Humidity unit

Indoor Unit

134

2

Outdoor Unit

18

24

22

91110

8

17 15

5

7

612

14

16

13

1923

20

21

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Remote Controller

2

3

4

<ARC452A5>

7

8

Open
the front cover

1

5

6

9

10

11

12

 Remote Controller

1. Signal transmitter:

• It sends signals to the indoor unit.

2. Display (LCD):

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

3. FAN setting button:

• It selects the airflow rate setting.

4. HUMIDIFY/VENTILATE button:

• HUMID HEAT operation and FRESH AIR SUPPLY
VENTILATION (page 12.)

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 8.)

8. POWERFUL/QUIET button:

• POWERFUL and OUTDOOR UNIT QUIET
operation (page 17.)

9. ECONO button:

• ECONO operation (page 18.)

10.SWING button:

• Flaps (horizontal blades) (page 10.)

11.SWING button:

• Louvers (vertical blades) (page 10.)

12. COMFORT/SENSOR button:

• COMFORT AIRFLOW and INTELLIGENT EYE
operation (page 15.)

13. : WEEKLY button
: PROGRAM button
: COPY button
: BACK button
: NEXT button:

• WEEKLY TIMER operation (page 21.)

14. SELECT button:

• It changes the ON/OFF TIMER and WEEKLY
TIMER settings. (page 19, 20, 22.)

15. OFF TIMER button: (page 19.)

16. ON TIMER button: (page 20.)

17. TIMER CANCEL button:

• It cancels the timer setting. (page 19, 20.)

• It cannot be used for the WEEKLY TIMER operation.

18. CLOCK button: (page 7.)

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13

15
17

16
18

14

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Preparation before Operation

Set.

2

Position + and
– correctly!

3

1

 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 to block
signals between the unit and the remote controller, such as a curtain, the unit will not operate.

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

• The maximum distance for communication is about 7m.

Receiver

 To fix the remote controller holder on the wall

Pull.

Remote
controller
holder

1. Choose a place from where the signals reach the unit.

2. Fix the holder to a wall, a pillar, or similar location with the

screws procured locally.

3. Place the remote controller in the remote controller holder.

 Attach the titanium apatite photocatalytic air-

purifying filter and air supply filter

(page 28, 29.)

 Turn the breaker ON

• Turning ON the breaker opens once and closes the flaps. (This is a normal procedure.)

ATTENTION

 About batteries

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

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

• The batteries will last for approximately one year. If the remote controller display begins to fade and the degradation of reception
performance occurs within a year, however, replace both two 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.

 About 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.

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2, 4

1, 3, 5

 To set the clock

1.

Press “CLOCK” button.

• “ ”is displayed.

• “ ” and “ ” blinks.

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.

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

•“ ” blinks.

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NOTE

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

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.

• Clogged air filters cause inefficient operation and waste energy. Clean them once in
about every two weeks.

 Please note

• Even while the air conditioner is not operating, it consumes approx. 15 watts of electricity to activate electronic device.
When the compressor is preheating, the unit consumes approx. 50 watts of electricity.

• 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

Outdoor temperature: 10 to 46°C

COOL

DRY

HEAT

HUMID

HEAT

• The operation of the system outside the above humidity or temperature range may cause a safety device to disable the system.

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

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

Outdoor temperature: –15 to 20°C
Indoor temperature: 10 to 30°C

Outdoor temperature: –10 to 20°C
Indoor temperature: 12 to 30°C
Indoor humidity: 70% max.

• 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.

Recommended temperature setting

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

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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 a operation

mode.

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

5

4

AUTO COOL HEAT FANDRY

1

2, 3

2. Press “ON/OFF” button.

• “ ” is displayed on the LCD.

• The OPERATION lamp lights up.

Operation mode Multi-monitor lamp

AUTO Blue/Red

DRY Green

COOL Blue

HEAT Red

FAN Wh ite

HUMID HEAT

FRESH AIR SUPPLY
VENTILATION

Orange/Yellow

(page 12.)

Lit white for 2 seconds.
After that, return to the
color of selected
operation mode or
change to yellow in a
standby state.
(page 14.)

 To stop operation

3. Press “ON/OFF” button again.

• “ ” disappear from the LCD.

• Then OPERATION lamp goes off.

 To change the temperature setting

4. Press “TEMPERATURE adjustment” button.

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

DRY or FAN mode COOL mode HEAT mode AUTO mode

The temperature setting is not
variable.

8

18 – 32°C 10 – 30°C 18 – 30°C

Press “ ” button to raise the temperature and

press “ ” button to lower the temperature.

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 To change the airflow rate setting

5. Press “FAN setting” button.

DRY mode AUTO or COOL or HEAT or FAN mode

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.

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

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Five levels of airflow 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 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.

• A pinging sound may be heard during defrosting operation, which, however does not mean that the air conditioner has failures.

 Note on COOL operation

• This air conditioner cools the room by blowing the hot air in the room outside, so if the outside temperature is high, the performance of
the air conditioner drops.

 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 rate, so manual adjustment of these functions is unavailable.

 Notes on AUTO operation

• In AUTO operation, the system selects a temperature setting and an appropriate operation mode (COOL or HEAT) based on the room
temperature at the start of 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 airflow rate setting

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

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