DAIKIN ROOM AIR CONDITIONER
Operation Manual
MODELS FTXS20G2V1B FTXS25G2V1B
FTXS35G2V1B FTXS42G2V1B
FTXS50G2V1B
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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
COMFORT AIRFLOW and
INTELLIGENT EYE Operation ..................... 14
POWERFUL Operation ................................ 17
OUTDOOR UNIT QUIET Operation............. 18
ECONO Operation ....................................... 19
TIMER Operation ......................................... 20
WEEKLY TIMER Operation ......................... 22
Note for Multi System................................... 27
CARE
Care and Cleaning ....................................... 29
TROUBLE SHOOTING
Trouble Shooting.......................................... 32
1
READ BEFORE OPERATION
Safety precautions
• Keep this manual where the operator can easily find them.
• Read this manual attentively before starting up the unit.
• For safety reason the operator must read the following cautions carefully.
• This manual classifies precautions into WARNINGS and CAUTIONS. Be sure to follow all precautions below: they are all important for ensuring safety.
WARNING
If you do not follow these instructions exactly, the unit may
cause property damage, personal injury or loss of life.
Never do. Be sure to follow the instructions.
Be sure to earth the air conditioner.
Never touch the air conditioner (including the
remote controller) with a wet hand.
If you do not follow these instructions exactly, the unit may
cause minor or moderate property damage or personal injury.
Never cause the air conditioner (including the
remote controller) to get wet.
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.
• It is not good for health to expose your body to the airflow for a long time.
• Do not put a finger, a rod or other objects into the air outlet or inlet. As the fan is rotating at
a high speed, it will cause injury.
• Do not attempt to repair, relocate, modify or reinstall the air conditioner by yourself. Incorrect work
will cause electric shocks, fire etc.
For repairs and reinstallation, consult your Daikin dealer for advice and information.
• The refrigerant used in the air conditioner is safe. Although leaks should not occur, if for
some reason any refrigerant happens to leak into the room, make sure it does not come in
contact with any flame as of gas heaters, kerosene heaters or gas range.
• If the air conditioner is not cooling (heating) properly, the refrigerant may be leaking, so call your dealer.
When carrying out repairs accompanying adding refrigerant, check the content of the repairs with our service staff.
• Do not attempt to install the air conditioner by your self. Incorrect work will result in water leakage,
electric shocks or fire. For installation, consult the dealer or a qualified technician.
• In order to avoid electric shock, fire or injury, if you detect any abnormally such as smell of fire, stop
the operation and turn off the breaker. And call your dealer for instructions.
• Depending on the environment, an earth leakage breaker must be installed. Lack of an earth
leakage breaker may result in electric shocks or fire.
• The air conditioner must be earthed. Incomplete earthing may result in electric shocks. Do
not connect the earth line to a gas pipe, water pipe, lightning rod, or a telephone earth line.
CAUTION
In order to avoid any quality deterioration, do not use the unit for cooling precision instru-
•
ments, food, plants, animals or works of art.
• Never expose little children, plants or animals directly to the airflow.
•
Do not place appliances which produce open fire in places exposed to the airflow from the unit or
under the indoor unit. It may cause incomplete combustion or deformation of the unit due to the heat.
2
• Do not block air inlets nor outlets. Impaired airflow may result in insufficient performance or trouble.
• Do not stand or sit on the outdoor unit. Do not place any object on the unit to avoid injury, do not
remove the fan guard.
• Do not place anything under the indoor or outdoor unit that must be kept away from moisture. In
certain conditions, moisture in the air may condense and drip.
• After a long use, check the unit stand and fittings for damage.
• Do not touch the air inlet and alminum fins of outdoor unit. It may cause injury.
• The appliance is not intended for use by young children or infirm persons without supervision.
• Young children should be supervised to ensure that they do not play with the appliance.
• To avoid oxygen deficiency, ventilate the room sufficiently if equipment with burner is used
together with the air conditioner.
•
Before cleaning, be sure to stop the operation, turn the breaker off or pull out the supply cord.
• Do not connect the air conditioner to a power supply different from the one as specified. It
may cause trouble or fire.
• Arrange the drain hose to ensure smooth drainage. Incomplete draining 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.
• Do not operate the air conditioner with wet hands.
• Do not wash the indoor unit with excessive water, only use a slightly wet cloth.
•
Do not place things such as vessels containing water or anything else on top of the unit. Water
may penetrate into the unit and degrade electrical insulations, resulting in an electric shock.
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.
3
Names of parts
■ Indoor Unit
2
134
5
7
91110
8
16 14
4
6
13
15
12
■ Outdoor Unit
20/25/35/42 class 50 class
17
21
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 sensor:
• It senses the air temperature around the
unit.
7. INTELLIGENT EYE sensor:
8. Display
9. Air outlet
10. Horizontal blades (flaps):
11. Vertical blades (louvers):
• The louvers are inside of the air outlet.
(page 12.)
Outdoor Unit
■
17. Air inlet:
18. Refrigerant piping and inter-unit cable
19. Drain hose
(Back and side)
(page 14.)
(page 12.)
17
18
19
21
20
12. 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.
Model
COOLING
ONLY
HEAT
PUMP
• This switch is useful when the remote
controller is missing.
13. Operation lamp (green)
14. TIMER lamp (yellow):
INTELLIGENT EYE lamp (green):
15.
16. 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.......... beeeeep
20. Earth terminal:
• It is inside of this cover.
21. Air outlet
Mode
COOL
AUTO
(page 10.)
Temperature
setting
22°C
25°C
(page 20.)
18
19
20
Airflow
rate
AUTO
AUTO
(page 14.)
5
■ Remote Controller
1
2
3
4
<ARC452A3>
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 17.)
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.)
8. QUIET button:
OUTDOOR UNIT QUIET operation (page 18.)
9. ECONO button:
ECONO operation (page 19.)
10. SWING button:
• Horizontal blades (flaps) (page 12.)
<Open the front cover>
109
5
6
7
8
13
14
15
17
11. SWING button:
• Vertical blades (louvers) (page 12.)
12. COMFORT/SENSOR button:
• COMFORT AIRFLOW and INTELLIGENT
EYE operation (page 14.)
13. WEEKLY/PROGRAM/COPY/BACK/NEXT
button:
• WEEKLY TIMER operation (page 22.)
14. SELECT button:
• It changes the ON/OFF TIMER and
WEEKLY TIMER settings. (page 20, 22.)
15. OFF TIMER button:
16. ON TIMER button:
17. TIMER CANCEL button:
• It cancels the timer setting. (page 20, 21.)
• It cannot be used for the WEEKLY TIMER
operation.
18. CLOCK button:
(page 20.)
(page 21.)
(page 8.)
11
12
16
18
6
Preparation before Operation
■ To set the batteries
2
1. Slide the front cover to take it off.
2. Set two dry batteries (LR03·AAA).
3. Set the front cover as before.
1
■ 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.
■ 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, or similar
location with the screws procured locally.
3. Place the remote controller in the remote
controller holder.
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 alkaline batteries.
• 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.
Set.
• To remove, pull it
upwards.
Position + and
– correctly!
3
Receiver
Remote
controller
holder
7
Preparation before Operation
■ 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.
2, 4
1, 3, 5
NOTE
• If the indoor unit’s internal clock is not set to the correct time, the WEEKLY TIMER will not
operate punctually.
8
■ Turn the breaker ON
• Turning ON the breaker opens once and closes the flaps. (This is a normal procedure.)
■ Checks on Remote Controller Settings
• This remote controller is common to the heat pump model
and cooling only model. Use the dipswitches on the remote
controller to set the heat pump model or cooling only model.
• Refer to the following explanation and make the setting as
shown in the illustration.
• For customers of Heat pump model: Set to H/P
• For customers of Cooling-only model: Set to C/O
H/P C/O
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
• The air conditioner always consumes 15-35 watts 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
COOL
Outdoor temperature:〈2MK(X)S〉 10 to 46°C
Indoor temperature: 18 to 32°C
Indoor humidity: 80% max.
HEAT
Outdoor temperature:
Indoor temperature: 10 to 30°C
DRY
Outdoor temperature:〈2MK(X)S〉 10 to 46°C
Indoor temperature: 18 to 32°C
Indoor humidity: 80% max.
The operation of the system outside the above humidity or temperature range may cause a
•
〈3/4/5MK(X)S〉 –10 to 46°C
〈RK(X)S〉 –10 to 46°C
〈2/3/4/5MXS〉 –15 to 20°C
〈RXS〉 –15 to 20°C
〈3/4/5MK(X)S〉 –10 to 46°C
〈RK(X)S〉 –10 to 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.
• A safety device may work to stop the operation.
• Condensation may occur on the indoor unit and drip.
safety device to disable the system.
Recommended temperature setting
For cooling:26°C – 28°C
For heating:20°C – 24°C
Dipswitches
9
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.
:AUTO
:DRY
: COOL
:HEAT
:FAN
Cooling only
model
Heat pump
model
2. Press “ON/OFF button”.
• The OPERATION lamp lights up.
5
4
2, 3
1
■ To stop operation
3. Press “ON/OFF button” again.
• Then OPERATION lamp goes off.
■ To change the temperature setting
4. Press “TEMPERATURE adjustment button”.
DRY or FAN mode AUTO or COOL or HEAT mode
Press “ ” to raise the temperature and press
“ ” to lower the temperature.
The temperature setting is not variable.
10
Set to the temperature you like.
■ To change the airflow rate setting
5. Press “FAN setting button”.
DRY mode AUTO or COOL or HEAT or FAN mode
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.
NOTE
■
Note 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.
■
Note 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 airflow rate setting
• At smaller airflow rates, the cooling (heating) effect is also smaller.
plus “ ” “ ” are available.
11
Adjusting the Airflow Direction
You can adjust the airflow direction to increase
your comfort.
■ To adjust the horizontal
blades (flaps)
1. Press “SWING button ”.
• “ ” is displayed on the LCD and the
flaps will begin to swing.
2. When the flaps have reached
the desired position,
press “SWING button ”
once more.
• The flaps will stop moving.
• “ ” disappears from the LCD.
■ To adjust the vertical
blades (louvers)
1, 2
3, 4
3. Press “SWING button ”.
• “ ” is displayed on the LCD.
4. When the louvers have reached the desired position, press the
“SWING button ” once more.
• The louvers will stop moving.
• “ ” disappears from the LCD.
12
■ To start 3-D Airflow
1. 3. Press the “SWING button ” and the “SWING button ”:
the “ ” and “ ” display will light up and the flap and louvers will
move in turn.
■ To cancel 3-D Airflow
2. 4. Press either the “SWING button ” or the “SWING button ”.
■ COMFORT AIRFLOW operation
• Check COMFORT AIRFLOW operation in the section of “COMFORT AIRFLOW Operation”
and “INTELLIGENT EYE Operation”. (page 14.)
Notes on flaps and louvers angles
• When “
SWING button
swinging range depends on the operation
mode. (See the figure.)
Three-Dimensional (3-D) Airflow
• Using three-dimensional airflow circulates
cold air, which tends to collected at the bottom
of the room, and hot air, which tends to collect
near the ceiling, throughout the room,
preventing areas of cold and hot developing.
■
ATTENTION
• Always use a remote controller to adjust the
angles of the flaps and louvers. If you
attempt to move it forcibly with hand when it
is swinging, the mechanism may be broken.
• Always use a remote controller to adjust the
louvers angles. In side the air outlet, a fan is
rotating at a high speed.
” is selected, the flaps
In DRY mode or
COOL mode
COMFORT AIRFLOW
(page 14.)
In HEAT mode
In FAN mode
Upper limit
Lower limit
Stop operation
Upper limit
Upper limit
5˚
15˚
50˚
Stop operation
30˚
70˚
Lower limit
80˚
COMFORT AIRFLOW (page 14.)
5˚
80˚
Lower limit
Stop operation
13
COMFORT AIRFLOW and INTELLIGENT EYE Operation
The INTELLIGENT EYE incorporates infrared
sensors to detect the presence of people in the
conditioned room.
When these sensors detect people, the louvers
will adjust the airflow direction to an area where
people are not present. When there are no people
in the sensing areas, the air conditioner will go
into energy-saving mode.
■ To start operation
1. Press “COMFORT/SENSOR
button” and select an
operation mode.
• Choose the desired operation mode
out of the following sequence.
• Each time the “COMFORT/SENSOR
button” is pressed a different setting
option is displayed on the LCD.
Blank
■ To cancel operation
1, 2
2. Press “COMFORT/SENSOR
button”.
• Press the button to select “Blank”.
Display Operation mode Explanation
COMFORT AIRFLOW
INTELLIGENT EYE
COMFORT AIRFLOW and
INTELLIGENT EYE
Blank No function –
The flaps will adjust the airflow direction upward
while cooling, and adjust the airflow direction
downward while heating. (page 15.)
The sensors will detect the movement of people
in the sensing areas and the louvers will adjust
the airflow direction to an area where people are
not present. When there are no people in the
sensing areas, the air conditioner will go into
energy-saving mode. (page 15.)
The air conditioner will be in COMFORT
AIRFLOW operation combined with
INTELLIGENT EYE operation. (page 16.)
14
Notes on “COMFORT AIRFLOW Operation”
•
The flap position will change, preventing air from blowing directly on the occupants of the room.
•
POWERFUL operation and COMFORT AIRFLOW operation cannot be used at the same time.
• The volume of air will be set to AUTO. If the upward and downward airflow direction is
selected, the COMFORT AIRFLOW function will be canceled.
• Priority is given to the function of whichever button is pressed last.
• The COMFORT AIRFLOW function makes the following airflow direction adjustments.
The flaps will move upward while cooling so that the airflow will be directed upward.
The flaps will move downward while heating so that the airflow will be directed downward.
Cooling operation Heating operation
Notes on “INTELLIGENT EYE Operation”
• The INTELLIGENT EYE sensor according to the following situations.
Vertical angle 90˚
(Side View)
90˚
5m
Horizontal angle 110˚
(Top View)
55˚ 55˚
5m
Area 1 Area 2
A person is detected in
area 1.
Area 1 Area 2
People are detected in
both areas.
(Use the INTELLIGENT EYE
Operation in combination with the
COMFORT AIRFLOW Operation.)
Area 1 Area 2
A person is detected in
area 2.
The air conditioner will go into
energy-saving mode after 20 minutes.
No people are detected in
the areas.
* The wind direction may differ from the
illustrated direction depending on the actions
and movements of the people in the areas.
15
COMFORT AIRFLOW and
INTELLIGENT EYE Operation
Notes on “INTELLIGENT EYE Operation”
• While the air conditioner is in INTELLIGENT EYE operation, the louvers will adjust the
airflow direction if there are people in the sensing areas of the INTELLIGENT EYE so that
the leftward or rightward airflow will not be directed to the people.
If no people are detected in either area 1 or 2 in 20 minutes, the air conditioner will go into
energy-saving mode with the set temperature shifted by 2°C.
The air conditioner may go into energy-saving operation even if there are people in the
areas. This may occur depending on the clothes the people are wearing if there are no
movements of the people in the areas.
•
The airflow direction from the louvers will be leftward if there are people in both areas 1 and 2 or if there
is a person right in front of the sensors because the sensors on the both sides will detect the person.
•
Due to the position of the sensor, people might be exposed to the airflow of the indoor unit if
they are close to the front side of the indoor unit.
If there are people close to the front side of the indoor unit or in both areas, it is recommended
to use the COMFORT AIRFLOW and INTELLIGENT EYE functions simultaneously. When
both of them are in use, the air conditioner will not direct the airflow towards the people.
• Sensor may not detect moving objects further than 5m away. (Check the application range)
• Sensor detection sensitivity changes according to indoor unit location, the speed of
passersby, temperature range, etc.
• The sensor also mistakenly detects pets, sunlight, fluttering curtains and light reflected off of
mirrors as passersby.
• NIGHT SET MODE (page 20.) will not go on during use of INTELLIGENT EYE operation.
“INTELLIGENT EYE” is useful for Energy Saving
■
Energy saving operation
• Change the temperature –2°C in heating / +2°C in cooling / +2°C in dry mode from set temperature.
• Decrease the airflow rate slightly in FAN mode only. If no presence detected in the room
during 20 minutes.
■ To combine “COMFORT AIRFLOW Operation” and
“INTELLIGENT EYE Operation”
• The air conditioner can go into operation with the COMFORT AIRFLOW and INTELLIGENT
EYE functions combined.
The flaps adjust the airflow direction upward (while in cooling operation) and downward
(while in heating operation), during which the sensors of the INTELLIGENT EYE are working
to detect the movement of people. When the sensors detect people, the louvers will direct
the airflow in such way that it will not be blown directly on them. If there are no people, the air
conditioner will go into energy-saving operation after 20 minutes.
CAUTION
• Do not place large objects near the sensor.
Also keep heating units or humidifiers outside the sensor’s detection area. This sensor can
detect undesirable objects.
•
Do not hit or violently push the INTELLIGENT EYE sensor. This can lead to damage and malfunction.
16
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, QUIET, or COMFORT
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.
• In COOL and HEAT mode
To maximize the cooling (heating) effect, the capacity of outdoor unit must be increased
and the airflow rate be fixed to the maximum setting.
The temperature and airflow settings are not variable.
• In DRY mode
The temperature setting is lowered by 2.5°C and the airflow rate is slightly increased.
• In FAN mode
The airflow rate is fixed to the maximum setting.
• When using priority-room setting
See “Note for Multi System”. (page 27.)
17
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
■
Note on OUTDOOR UNIT QUIET operation
• If using a multi system, this function will work only when the OUTDOOR UNIT QUIET
operation is set on all operated indoor units.
However, if using priority-room setting, see “Note for Multi System”. (page 27.)
• This function is available in COOL, HEAT, and AUTO modes.
(This is not available in FAN and DRY mode.)
• 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.
18
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
ECONO
Mode
Normal
operation
Maximum during
normal operation
Maximum during
ECONO Mode
1, 2
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
mode vary with the connecting outdoor unit.
Time
NOTE
• ECONO Operation can only be set when the unit is running. Pressing the OFF button
causes the setting 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 modes.
• 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.
19
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.
• Every 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 up.
1, 3
2
4
■ To cancel the OFF TIMER Operation
4. Press “CANCEL button”.
• The TIMER lamp goes off.
NOTE
• When TIMER is set, the present time is not displayed.
• Once you set ON, OFF TIMER, the time setting is kept in the memory. (The memory is
canceled when remote controller batteries are replaced.)
• When operating the unit via the ON/OFF Timer, the actual length of operation may vary from
the time entered by the user. (Maximum approx. 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.
20
■ To u s e ON TIMER
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.
•
Every 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 up.
■ To cancel ON TIMER
operation
2
1, 3
4
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
21
WEEKLY TIMER Operation
Up to 4 timer settings can be saved for each day of the week. It is convenient if the WEEKLY TIMER is
set according to the family’s life style.
■ Using in these cases of WEEKLY TIMER
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]
to
[Friday]
[Saturday]
[Sunday]
Make timer settings up to programs 1-4. (see page 23.)
Program 1 Program 2 Program 3 Program 4
ON OFF ON OFF
25˚C 27˚C
6:00 8:30 17:30 22:00
ON
25˚C
OFF
ON
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 25.)
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 23.)
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
ON
• Up to 4 reservations per day and 28 reservations per week can be set in the WEEKLY TIMER.
The effective use of the copy mode ensures ease of making reservations.
• The use of ON-ON-ON-ON settings, for example, makes it possible to schedule operating mode
and set temperature changes. Furthermore, by using OFF-OFF-OFF-OFF settings, only the turnOFF time of each day can be set. This will turn OFF the air conditioner automatically if the user
forgets to turn it OFF.
OFFOFF
27˚C
ON
22
■
To use WEEKLY TIMER operation
•
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]
25˚C 27˚C
6:00 8:30 17:30 22:00
1. Press “ button”.
• The day of the week and the reservation
number will be displayed.
• 1 to 4 settings can be made per day.
2.
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.
3. Press “NEXT button”.
• The day of the week will be set.
• “ ” and “ ” blink.
4. Press “SELECT button” to
select the desired mode.
• “ ” and “ ” or “ ” will flash.
ON OFF Blank
ON TIMER OFF TIMER no setting
• Go to STEP 9 if “no setting” is selected.
5. Press “NEXT button”.
• The weekly mode will be set.
• “ ” and “ ” blink.
6. Press “SELECT button” to select the desired time.
• The time can be set between 0:00 and 23:50 in 10 minute intervals.
• Press “BACK button” to return to the mode setting.
• Go to STEP 9 if “OFF” is selected at STEP 4.
1
3, 5, 7
2, 4, 6
7. Press “NEXT button”.
• The time will be set.
• “ ” and the temperature blink.
Respective Setting Screens
Day and number settings
ON/OFF settings Time settings Temperature settings
23
WEEKLY TIMER Operation
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”.
• The temperature will be set and go to
the next reservation setting.
• To continue further settings, repeat the
procedure from STEP 2.
10.Press “ button” to
complete the setting.
• Point the remote controller toward the
air conditioner and press the buttons to
operate. The air conditioner will beep
and the operation lamp will flash.
10
9
8
NOTE
■
WEEKLY TIMER
• Do not forget to set the time on the remote control first.
•
The day of the week, ON/OFF time can be set with WEEKLY TIMER. For ON-TIMER, settings
other than the above are based on the remote controller settings just before the operation.
• Both WEEKLY TIMER and ON/OFF timer cannot be used at the same time. The ON/OFF
timer has priority if it is set while WEEKLY TIMER is still active. WEEKLY TIMER is activated
after the reserved ON/OFF timer is completed.
• The “WEEKLY button” activates or deactivates the reservation.
•
To set WEEKLY TIMER, press “ button” and make a reservation according to the procedures.
• 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.
• Up to 4 settings per day and up to 28 settings per week can be reserved with WEEKLY
TIMER. If a reservation deactivated with “WEEKLY button” is activated once again, the last
reservation mode will be used.
• 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 mode, time and temperature settings.
It cannot be used to go back to the reservation number.
24
■ Using copy mode
• A reservation made once can be easily
copied and the same settings used for
another day of the week.
Program 1 Program 2 Program 3 Program 4
ON OFF ON OFF
[Monday]
[Tuseday]
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”.
2.
Press “SELECT button” to confirm
the day of the week to be copied.
3. Press “COPY button”.
• This activates copy mode.
• Copy whole reservation of the selected
day of the week.
4.
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”.
• Exit copy mode.
Setting Screens
Confirmation screen Copy screen Paste screen Normal screen
NOTE
■
COPY MODE
• The entire reservation of the source day of the week is copied in the copy mode.
Detailed settings can be made after the copy is completed.
1, 6
3, 5
2, 4
25
WEEKLY TIMER Operation
■
Confirming a reservation
• The reservation can be confirmed.
1. Press “ button”.
•
The day of the week and the reservation
number of the current day will be displayed.
2.
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.
3. Press “ button”.
• Reservation confirmation complete.
Setting Screens
■ Canceling all
4, 6, 7
reservations
4. Hold the “WEEKLY button” for
5 seconds.
• Be sure to direct the remote control
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 canceled.
■ Canceling individual reservations
• This function can be used for canceling reservations for each day of the week.
• It can be used while confirming or setting reservations.
5. Select the day of the week to be canceled with the “SELECT button”.
6. Hold the “WEEKLY button” for 5 seconds.
• The selected reservation will be canceled.
■ To cancel WEEKLY TIMER operation
7. Press “WEEKLY button” to deactivate the WEEKLY operation.
• The “ ” will disappear from the display.
• The TIMER lamp goes off.
• To reactivate the WEEKLY TIMER operation, press the “WEEKLY button” again.
1, 3
2, 5
26
Note for Multi System
〈〈
What is a “Multi System”?
This system has one outdoor unit connected to
multiple indoor units.
■
Selecting the operation mode
1. With the Priority Room Setting
present but inactive or not present.
When more than one 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 (*1) as the first unit.
Otherwise, they will enter the Standby Mode, and the operation lamp will flash; this does not indicate malfunction.
(*1)
• COOL, DRY and FAN mode may be used at the same time.
•
AUTO mode automatically selects COOL mode or HEAT mode based on the room temperature.
Therefore, AUTO mode 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 Mode, then using Heating Mode in any room after this will give priority to
heating. In this situation, the air conditioner running in FAN Mode will go on standby, and the operation lamp will flash.
〉
〉〉
A
A
room
C
C
room
room
room
B
B
room
room
Outdoor
unit
Living
Living
room
room
2. With the Priority Room Setting active.
See “Priority Room Setting” on the next page.
■
NIGHT QUIET Mode (Available only for cooling 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 5°C or more below the highest temperature
recorded that day. Therefore, when the temperature difference is less than 5°C, this function will not be activated.
• NIGHT QUIET Mode reduces slightly the cooling (heating) efficiency of the unit.
■ OUTDOOR UNIT QUIET operation
(page 18.)
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” on the next page.
■
Cooling / Heating mode lock (Available only for heat pump models)
The Cooling / Heating Mode Lock requires initial programming during installation.Please consult your retailer or dealer
for assistance. The Cooling / Heating Mode Lock sets the unit forcibly to either Cooling or Heating Mode. This function
is convenient when you wish to set all indoor units connected to the Multi system to the same operation mode.
27
Note for Multi System
■ 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.
〈Example〉
* Room A is the Priority Room in the examples.
When COOL mode 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
2. Priority when POWERFUL operation is used.
〈Example〉
* Room A is the Priority Room in the examples.
The indoor units in Rooms A,B,C and D are all operating. If the unit in Room A enters
POWERFUL operation, operation capacity will be concentrated in Room A. In such a case,
the cooling (heating) efficiency of the units in Rooms B,C and D may be slightly reduced.
3. Priority when using OUTDOOR UNIT QUIET operation.
〈Example〉
* Room A is the Priority Room in the examples.
Just by setting the unit in Room A to QUIET operation, the air conditioner starts OUTDOOR
UNIT QUIET operation.
You don’t have to set all the operated indoor units to QUIET operation.
Status of Room B, C and D when the unit in Room
A is in COOL mode
The unit enters Standby Mode. Operation resumes when
the Room A unit stops operating.
If the unit is set to COOL mode, operation continues. If set
to HEAT mode, it enters Standby Mode. Operation
resumes when the Room A unit stops operating.
28
CARE
Care and Cleaning
CAUTION
Before cleaning, be sure to stop the operation and
turn the breaker OFF.
Units
■ Indoor unit, Outdoor unit and Remote controller
1. Wipe them with dry soft cloth.
■ Front panel
1. Open the front panel.
• Hold the panel by the tabs on the two sides and lift
it unitl it stops with a click.
2. Remove the front panel.
• Lift the front panel up, slide it slightly to the right,
and remove it from the horizontal axle.
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 panel with water, dry it with
cloth, dry it up in the shade after washing.
4. Attach the front panel.
• Set the 2 keys of the front panel into the slots and
push them in all the way.
• Close the front panel slowly and push the panel at
the 3 points.
(1 on each side and 1 in the middle.)
Fit the key
into the slot.
CAUTION
• Don’t 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.
29
Filters
1. Open the front panel. (page 29.)
2. Pull out the air filters.
• Push a little upwards the tab at the center of
each air filter, then pull it down.
3. Take off the Titanium Apatite
Photocatalytic Air-Purifying Filter.
• Hold the recessed parts of the frame and
unhook the four claws.
4. Clean or replace each filter.
See figure.
Titanium Apatite
Photocatalytic
Air-Purifying Filter
Filter frame
Ta b
5. Set the air filter and Titanium Apatite
Photocatalytic Air-Purifying Filter as
Push
they were and close the front panel.
•
Insert claws of the filters into slots of the front panel.
Close the front panel slowly and push the panel at
the 3 points. (1 on each side and 1 in the middle.)
■ Air Filter
1. Wash the air filters 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 filters every 2 weeks.
■
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.
2. Do not remove filter from frame when washing with water.
3. After washing, shake off remaining water and dry in the shade.
4. Since the material is made out of polyester, 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 non-flammable waste.
Air filter
30
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 Titanium Apatite Photocatalytic Air-Purifying Filter contact to the service shop
there you bought the air conditioner.
• Dispose of the old filter as non-flammable waste.
Item Part No.
Titanium Apatite Photocatalytic Air-Purifying Filter
(without frame) 1 set
KAF970A46
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 operation.
2. After operation stops, turn off the breaker for the room air conditioner.
3. Clean the air filters and set them again.
4. Take out batteries from the remote controller.
NOTE
• When a multi outdoor unit is connected, make sure the heating operation is not used at
the other room befure you use the fan operation. (page 27.)
31
TROUBLE SHOOTING
Trouble Shooting
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 heating
operation.
The heating operation stops suddenly
and a flowing sound is heard.
The outdoor unit emits water or
steam.
Mist comes out of the indoor
unit.
The indoor unit gives out odour.
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.
• 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 system is taking away the frost on the outdoor unit.
You should wait for about 4 to 12 minutes.
■ In HEAT mode
• The frost on the outdoor unit melts into water or steam
when the air conditioner is in defrost operation.
■ In COOL or DRY mode
• 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.)
■ 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 “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 23.)
32
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.
The indoor unit comes to a stop
or does not operate when the
heat pump model is selected.
The remote controller allows
selection of “heating” even
though the unit is cooling only
model.
Heating cannot be selected,
even though the unit is heat
pump model.
• Hasn’t a breaker turned OFF or a fuse blown?
• Isn’t it a power failure?
• Are batteries set in the remote controller?
• Is the timer setting correct?
• Are the air filters clean?
• Is there anything to block the air inlet or the outlet of the
indoor and the outdoor units?
• Is the temperature setting appropriate?
• Are the windows and doors closed?
• Are the airflow rate and the air direction set appropriately?
• Are the air filters clean?
• Is there anything to block the air inlet or the outlet of the
indoor and the outdoor units?
Clean the air filters or take all obstacles away and turn the
breaker OFF. 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
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 27.)
• 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.
• Unless the air conditioner has a heating function, the unit in cooling,
dry, or fan operation comes to a stop if the heating mode is selected.
If the heating mode is selected and the Run button is pressed while
the unit is not in operation, the unit does not start operating.
Check the specifications of the outdoor unit. If the outdoor
unit is cooling only model, set the remote controller for a
cooling only model using the cooling only/heat pump switch
on the remote controller. (page 9.)
If you are not sure about how to switch the setting, contact
the service shop where you bought the air conditioner.
• Set the remote controller so that it is for a heat pump model
by using the cooling only/heat pump switch on the remote
controller. (page 9.)
If you are not sure about how to switch the setting, contact
the service shop where you bought the air conditioner.
multi system
?
33
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.
n
n
n
n
n
n
Turn the breaker
OFF and call the
service shop.
■ After a power failure
The air conditioner automatically resumes operation
in about 3 minutes. You should just wait for a while.
■ Lightning
If lightning may strike the neighbouring area, stop operation and turn the breaker OFF for system protection.
Disposal requirements
Your air conditioning product is marked with this symbol. This means that electrical and
electronic products shall not be mixed with unsorted household waste.
Do not try to dismantle the system yourself: the dismantling of the air conditioning
system, treatment of the refrigerant, of oil and of other parts must be done by a
qualified installer in accordance with relevant local and national legislation.
Air conditioners must be treated at a specialized treatment facility for re-use, recycling and recovery. By
ensuring this product is disposed of correctly, you will help to prevent potential negative consequences for
the environment and human health. Please contact the installer or local authority for more information.
Batteries must be removed from the remote controller and disposed of separately in accordance with
relevant local and national legislation.
We recommend periodical maintenance.
In certain operating conditions, the inside of the air conditioner may get foul after several seasons of use, resulting in poor performance. It is recommended to have periodical maintenance by a specialist aside from regular
cleaning by the user. For specialist maintenance, contact the service shop where you bought the air conditioner.
The maintenance cost must be born by the user.
Important information regarding the refrigerant used.
This product contains fluorinated greenhouse gases covered by the Kyoto Protocol.
Refrigerant type:
(1)
GWP
value:
(1)
GWP = global warming potential
Periodical inspections for refrigerant leaks may be required depending on European or local legislation.
Please contact your local dealer for more information.
R410A
1975
34
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.
35
LED ON OUTDOOR UNIT PCB 2MXS, 3MXS, 3MKS, 4MXS, 4MKS, 5MXS, 5MKS series
GREEN
MICROCOMPUTER
NORMAL
NORMALLY
GREEN
FLASHING
NORMALLY OFF
RED
ON
FLASHING
OFF
IRRELEVANT
RED
MALFUNCTION
DETECTION
LED1 LED2 LED3 LED4LED-A LED5
NOTE: The LED5 is only available in the 5M Series.
DIAGNOSIS
NORMAL CHECK INDOOR UNIT
HIGH PRESSURE PROTECTOR WORKED OR FREEZE-UP IN OPERATING UNIT OR STAND-BY UNIT
∗
OVERLOAD RELAY WORKED OR HIGH DISCHARGE PIPE TEMPERATURE
FAULTY COMPRESSOR START
INPUT OVERCURRENT
∗ THERMISTOR OR CT ABNORMALITY
HIGH TEMPERATURE SWITCHBOX
HIGH TEMPERATURE AT INVERTER CIRCUIT HEATSINK
∗ OUTPUT OVERCURRENT
∗ REFRIGERANT SHORTAGE
LOW VOLTAGE TO MAIN CIRCUIT OR MOMENTARY VOLTAGE LOSS
REVERSING SOLENOID VALVE SWITCHING FAILURE
FAN MOTOR FAULT
[NOTE 1]
POWER SUPPLY FAULT OR [NOTE 2]
LED ON OUTDOOR UNIT PCB 2MXS, 2MKS series
GREEN
MICROCOMPUTER
NORMAL
DIAGNOSIS
GREEN
LED-A
NORMAL CHECK INDOOR UNIT
[NOTE 1]
POWER SUPPLY FAULT OR [NOTE 2]
NORMALLY
FLASHING
ON
FLASHING
OFF
NOTE
1.
Turn the power off and then on again. If the LED display recurs,the outdoor unit PCB is faulty.
2. Diagnosis marked
∗ Do not apply to some cases. For details, refer to the service guide.
36
3P207037-1B
Two-dimensional bar code is a code
for manufacturing.
(0711)
M07B014A
HT
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