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DAIKIN ROOM AIR CONDITIONER
OPERATION MANUAL
MODELS
ATX20KV1B
ATX25KV1B
ATX35KV1B
1
Features
Enhanced comfort and energy Enhanced comfort and energy
savingssavings
ECONO
This function enables effi cient operation by limiting the maximum power
consumption. It is useful when using the air conditioner and other electrical
devices simultaneously on a shared electrical circuit.
Page 14
COMFORT AIRFLOW
The airfl ow direction is upward while in COOL operation, and downward while
in HEAT operation. This function prevents cold or warm air from blowing
directly on your body.
Page 13
2
Contents
Read Before Operation
Safety Precautions ......................................... 3
Names of Parts ............................................... 5
Preparation Before Operation ......................... 8
Basic Operation
AUTO · COOL · DRY · HEAT ·
FAN ONLY Operation ............................9
Adjusting the Airfl ow Rate .................. 11
Adjusting the Airfl ow Direction ...........12
Useful Functions
COMFORT AIRFLOW Operation .......13
POWERFUL Operation ......................13
ECONO Operation ............................. 14
TIMER Operation
ON/OFF TIMER Operation ................15
Care
Care and Cleaning ....................................... 17
When the Need Arises
FAQ ............................................................. 21
Troubleshooting ........................................... 22
The English text is the original instruction. Other languages are
translations of the original instructions.
3
Read Before Operation
Safety Precautions
• Keep this manual where the user can easily fi nd it.
• Read the precautions in this manual carefully before operating the unit.
• This appliance is intended to be used by expert or trained users in shops, in light industry and on farms, or for commercial use
by lay persons.
• Sound pressure level is less than 70 dB (A).
• 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
CAUTION
Failure to follow these instructions properly may result in
personal injury or loss of life.
Failure to observe these instructions properly may result in
property damage or personal injury, which may be serious
depending on the circumstances.
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.
WARNING
• In order 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 shocks or fi re hazards.
• Do not use fl ammable spray near the air conditioner, or otherwise fi re may result.
• To avoid electric shocks, do not operate with wet hands.
• 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 shocks or fi re hazards. Please contact your local dealer or qualifi ed personnel for installation and
maintenance work.
• When the air conditioner is malfunctioning (giving off a burning odour, etc.) turn off power to the unit and contact your
local dealer. Continued operation under such circumstances may result in a failure, electric shocks or fi re hazards.
• Be sure to install an earth leakage circuit breaker. Failure to install the earth leakage circuit breaker may result in
electric shocks or fi re.
• Be sure to earth the unit. Do not earth the unit to a utility pipe, lightning conductor or telephone earth lead. Imperfect
earthing may result in electric shocks.
CAUTION
• Do not use the air conditioner for purposes other than those for which it is intended. Do not use the air conditioner
for cooling precision instruments, food, plants, animals or works of art as this may adversely affect the performance,
quality and/or longevity of the object concerned.
• Do not expose plants or animals directly to airfl ow from the unit as this may cause adverse effects.
• Do not place appliances that produce naked fl ames in places exposed to the airfl ow from the unit as this may impair
combustion of the burner.
• Do not block air inlets nor outlets. Impaired airfl ow may result in insuffi cient performance or trouble.
• Do not sit on the outdoor unit, put things on the unit, or pull the unit. Doing so may cause accidents, such as falling
or toppling down, thus resulting in injury, product malfunctioning, or product damage.
4
Read Before Operation
• 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 shocks or fi re.
• Do not wash the air conditioner with water, as this may result in electric shocks or fi re.
• Do not place water containers (vases etc.) above the unit, as this may result in electric shocks or fi re hazards.
• 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 off the circuit breaker or remove the power cord. Otherwise, an
electric shock and injury may result.
• Only connect the air conditioner to the specifi ed power supply circuit. Power supplies other than the one specifi ed
may result in electric shocks, overheating and fi res.
•
Arrange the drain hose to ensure smooth drainage. Imperfect drainage may cause wetting of the building, furniture etc.
• Do not place objects in direct proximity of the outdoor unit and do not let leaves and other debris accumulate around
the unit. Leaves are a hotbed for small animals which can enter the unit. Once in the unit, such animals can cause
malfunctions, smoke or fi re when making contact with electrical parts.
• Do not place objects around the indoor unit.
Doing so may have an adverse infl uence on the performance, product quality, and life of the air conditioner.
• This appliance is not intended to be used by persons with reduced physical, sensory or mental capabilities, or with
lack of operation knowledge, unless they have been given supervision or instruction concerning the appliance use by
person responsible for their safety.
• Keep out of children’s reach to ensure that they do not play with the appliance.
Installation site.
To install the air conditioner in the following types of environments, consult the dealer.
• Places with an oily environment or where steam or soot occurs.
• Salty environment such as coastal areas.
• Places where sulfi de gas occurs such as hot springs.
• Places where snow may block the outdoor unit.
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 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.
Safety Precautions
ON/OFF
5
Read Before Operation
Indoor Unit
Display
Air inlet
Front panel
Air outlet
Louvers (vertical blades)
• The louvers are inside of the air
outlet.
Page 12
Flap (horizontal blade)
Page 12
Model name plate Indoor temperature
sensor
• Detects the air temperature
around the unit.
OPERATION lamp (green)
TIMER lamp (orange)
Page 15,16
Signal receiver
• Receives signals from the remote
controller.
• When the unit receives a signal, you
will hear a beep sound.
Case Sound type
Operation start beep-beep
Setting changed beep
Operation stop long beep
Indoor unit ON/OFF switch
• Press this switch once to start operation.
Press once again to stop it.
• For the operation mode setting, refer to the following table.
Mode Temperature setting Airfl ow rate
AUTO 25°C AUTO
• This switch can be used when the remote controller is missing.
Names of Parts
6
Read Before Operation
Outdoor Unit
• The appearance of the outdoor unit may differ between different models.
Open the front panel
Air fi lter
Refrigerant piping and inter-
unit wiring
Earth terminal (inside)
Drain hose
Air outlet
Model name plate
Air inlet
(back and side)
Outdoor temperature
sensor (back)
Titanium apatite photocatalytic
air-purifying fi lter (without
frame)
Names of Parts
7
Read Before Operation
Names of Parts
Remote Controller
Display (LCD)
• Displays the current settings.
(In this illustration, each section is
shown with its displays on for the
purpose of explanation.)
AUTO button
• Automatically selects an appropriate
operation mode (COOL or HEAT)
based on the indoor temperature and
starts the operation.
Page 9
Direct operation buttons
• Starts the COOL, DRY, HEAT or FAN
ONLY operation.
Page 9
TEMPERATURE
adjustment button
• Changes the temperature setting.
Page 10
COMFORT button
• COMFORT AIRFLOW operation.
Page 13
POWERFUL button
• POWERFUL operation.
Page 13
OFF TIMER button
(NIGHT SET mode)
Page 16
ON TIMER button
Page 15
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.
• The maximum transmission distance
is about 7m.
OFF button
• Stops the operation.
Page 10
FAN setting button
• Selects the airfl ow rate setting.
Page 11
ECONO button
• ECONO operation.
Page 14
SWING button
•
Adjusts the airfl ow direction
.
Page 12
TIMER CANCEL button
• Cancels the timer setting.
Page 15,16
8
Read Before Operation
Preparation Before Operation
To insert the batteries
1. Remove the back cover by sliding and then
slightly lifting it.
2. Insert 2 dry batteries AAA.LR03 (alkaline).
3. Replace the back cover.
To fi x the remote controller holder to a wall
1.
Choose a place where the signals reach the
unit.
2.
Attach the holder to a wall, a pillar, or similar
location with the screws supplied with the holder.
3. Hang the remote controller on the remote
controller holder.
Fahrenheit/Celsius display switch
Press
and
(TIMER button)
simultaneously for about 5 seconds.
• The temperature will be displayed in Celsius when it is presently displayed in
Fahrenheit, and vice versa.
• The switch operation is only possible when the temperature is being displayed.
Turn on the circuit breaker
• After the power is turned on, the fl ap of the indoor unit opens and closes once to set the
reference position.
Position and
correctly!
2
3
1
Remote
controller holder
Remote controller
Screws
NOTE
Notes on batteries
• When replacing the batteries, use batteries of the same type, and replace both old batteries together.
• The batteries will last for about 1 year. If the remote controller display begins to fade and the possible transmission range becomes shorter
within a year, however, replace both batteries with new, size AAA.LR03 (alkaline).
• The batteries supplied with the remote controller are for initial operation. The batteries may run out in less than 1 year.
Note on remote controller
• Do not drop the remote controller. Do not get it wet.
9
Basic Operation
AUTO · COOL · DRY · HEAT · FAN ONLY
Operation
NOTE
Notes on AUTO operation
• In AUTO operation, the system selects an appropriate operation mode (COOL or HEAT) based on the indoor temperature and starts the
operation.
• The system automatically reselects setting at a regular interval to bring the indoor temperature to the user-setting level.
Note on DRY operation
• Eliminates humidity while maintaining the indoor temperature as much as possible. It automatically controls temperature and airfl ow rate, so
manual adjustment of these functions is unavailable.
The air conditioner operates with the operation mode of your choice.
To start operation
AUTO operation
• To automatically select an appropriate temperature and operation mode.
Press
.
COOL operation
• To lower the temperature.
Press
.
DRY operation
• To lower the humidity.
Press
.
HEAT operation
• To raise the temperature.
Press
.
FAN ONLY operation
• To circulate air in the room.
Press
.
• The OPERATION lamp lights green.
Display
10
Basic Operation
To stop operation
Press
.
• The OPERATION lamp goes off.
To change the temperature setting
Press
.
• Press to raise the temperature and press to lower the temperature.
COOL operation HEAT operation AUTO operation DRY or FAN ONLY operation
18 – 32°C 10 – 30°C 18 – 30°C
The temperature setting
cannot be changed.
Tips for saving energy
Keeping the temperature setting at a moderate level helps save energy.
• Recommended temperature setting
− For cooling: 26 – 28°C
− For heating: 20 – 24°C
Cover windows with a blind or a curtain.
• Blocking sunlight and air from outdoors increases the cooling (heating) effect.
Keep the air fi lters clean.
• Clogged air fi lters cause ineffi cient operation and waste energy. Clean them once every 2 weeks.
Page 18
If you are not going to use the air conditioner for a long period, for example in spring or autumn, turn off the circuit
breaker.
• The air conditioner always consumes a small amount of electricity even while it is not operating.
AUTO · COOL · DRY · HEAT · FAN ONLY
Operation
11
Basic Operation
You can adjust the airfl ow rate to increase your comfort.
To adjust the airfl ow rate setting
Press
.
• Each pressing of
changes the airfl ow rate setting in sequence.
AUTO Indoor unit quiet
Airflow rate 1-5 (Low to High)
• When the airfl ow is set to “ ”, quiet operation starts and noise from the indoor unit will
become quieter.
• In the quiet operation mode, the airfl ow rate is set to a weak level.
AUTO, COOL, HEAT and FAN ONLY operation DRY operation
The airfl ow rate setting
cannot be changed.
NOTE
Note on airfl ow rate setting
• At smaller airfl ow rates, the cooling (heating) effect is also smaller.
Adjusting the Airfl ow Rate
12
Basic Operation
Adjusting the Airfl ow Direction
You can adjust the airfl ow direction to increase your comfort.
CAUTION
• Always use a remote controller to adjust the angles of the fl ap. Moving the fl ap forcibly by hand may cause
a malfunction.
• Be careful when adjusting the louvers. Inside the air outlet, a fan is rotating at a high speed.
To start auto swing
Up and down airfl ow direction
Press
.
• “ ” is displayed on the LCD.
• The fl ap (horizontal blade) will begin to swing.
To set the fl ap at the desired position
• This function is effective while the fl ap is in auto swing mode.
Press
when the fl ap reaches the desired
position.
• “ ” disappears from the LCD.
To adjust the louvers at desired position
Hold the knobs and move the
louvers (vertical blades).
There is a knob in 2 places.
NOTE
Notes on airfl ow direction setting
• The movable range of the fl ap varies according to the operation mode.
• The fl ap will stop at the upper position when the airfl ow rate is changed to low during the
up and down swing setting.
Movable range of the flap
COOL / DRY
HEAT
FAN ONLY
Knobs
13
Useful Functions
13
COMFORT AIRFLOW Operation
POWERFUL Operation
POWERFUL operation quickly maximizes the cooling (heating) effect in any
operation mode. In this mode, the air conditioner operates at maximum capacity.
To start POWERFUL operation
Press
.
• “ ” is displayed on the LCD.
• POWERFUL operation ends in 20 minutes. Then the system automatically operates again
with the previous settings which were used before POWERFUL operation.
To cancel POWERFUL operation
Press
again.
• “ ” disappears from the LCD.
The air direction and fl ow rate are adjusted so that the air will not blow directly at
people in the room.
To start COMFORT AIRFLOW operation
Press
.
• “ ” is displayed on the LCD.
COOL and DRY operation HEAT operation
Flap direction
Goes up Goes down
Airfl ow rate
AUTO
• Not available in FAN ONLY mode.
To cancel COMFORT AIRFLOW operation
Press
again.
• “ ” disappears from the LCD.
• The fl ap will return to the memory position from before COMFORT AIRFLOW operation.
14
Useful Functions
14
NOTE
Note on COMFORT AIRFLOW operation
• If the up and down airfl ow direction is selected, the COMFORT AIRFLOW operation will be cancelled.
Notes on POWERFUL operation
• Pressing
causes the settings to be cancelled, and “ ” 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 increases and the airfl ow rate becomes fi xed at the maximum setting.
The temperature setting cannot be changed.
− In DRY operation
The temperature setting is lowered by 2.5°C and the airfl ow rate is slightly increased.
− In FAN ONLY operation
The airfl ow rate is fi xed at the maximum setting.
Notes on ECONO operation
• Pressing
causes the settings to be cancelled, and “ ” disappears from the LCD.
• If the power consumption level is already low, switching to ECONO operation will not reduce the power consumption.
Some useful functions can be used together.
COMFORT AIRFLOW + ECONO Available
*Priority is given to the function of whichever button is pressed last.
POWERFUL + COMFORT AIRFLOW Not available*
POWERFUL + ECONO Not available*
ECONO Operation
ECONO operation enables effi cient operation by limiting the maximum power
consumption.
This function is useful to prevent the circuit breaker from tripping when the unit
operates alongside other appliances on the same circuit.
To start ECONO operation
Press
.
• “ ” is displayed on the LCD.
• Not available in FAN ONLY mode.
To cancel ECONO operation
Press
again.
• “ ” disappears from the LCD.
15
TIMER Operation
ON/OFF TIMER Operation
Timer functions are useful for automatically switching the air conditioner on or off
at night or in the morning. You can also use the ON TIMER and OFF TIMER
together.
To use ON TIMER operation
Press
.
“ ” is displayed on the LCD.
• Each pressing of
advances the time setting by 1 hour.
The time can be set between 1 and 12 hours.
• The TIMER lamp lights orange.
Display
To cancel ON TIMER operation
Press
.
• “ ” disappears from the LCD.
• The TIMER lamp goes off.
NOTE
In the following cases, set the timer again.
• After the circuit breaker has turned off.
• After a power failure.
• After replacing the batteries in the remote controller.
16
TIMER Operation
To use OFF TIMER operation
Press
.
“ ” is displayed on the LCD.
• Each pressing of
advances the time setting by 1 hour.
The time can be set between 1 and 12 hours.
• The TIMER lamp lights orange.
Display
To cancel OFF TIMER operation
Press
.
• “ ” disappears from the LCD.
• The TIMER lamp goes off.
To combine ON TIMER and OFF TIMER operation
• A sample setting for combining the 2 timers is shown below.
• “
” and “ ” are displayed on the LCD.
[Example]
When setting while the unit is operating
• Stops the unit 1 hour later and starts it 7 hours after that.
When setting while the unit is stopped
• Starts the unit 2 hours later and stops it 3 hours after that.
NOTE
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) during sleeping hours.
ON/OFF TIMER Operation
17
Care
CAUTION
• Before cleaning, be sure to stop the operation and turn off the circuit breaker.
• Do not touch the aluminium fi ns of the indoor unit. If you touch those parts, this may cause an injury.
Quick reference
Cleaning parts
NOTE
For cleaning, do not use any of the following:
• Water hotter than 40°C
• Volatile liquid such as benzene, petrol and thinner
• Polishing compounds
• Rough materials such as a scrubbing brush
Front panel
• Wipe it with a soft damp cloth.
• Only neutral detergent may be used.
If dirty
Indoor unit, outdoor unit and
remote controller
• Wipe them with a soft cloth.
If dirty
Air fi lter
• Vacuum dust or wash the fi lter.
Once every 2 weeks
Page 18
Titanium apatite photocatalytic air-purifying fi lter
(without frame)
• Vacuum dust or replace the fi lter.
[Cleaning] [Replacement]
Once every 6 months Once every 3 years
Page 19
Page 19
Care and Cleaning
18
Care
Air fi lter
1. Open the front panel.
• Hold the front panel by the sides and open it.
2. Pull out the air fi lters.
• Push the fi lter tab at the center of each air fi lter a
little upwards, then pull it down.
2) Pull down
1) Push
3. Wash the air fi lters with
water or clean them with
vacuum cleaner.
• It is recommended to clean the air fi lters every
2 weeks.
If the dust does not come off easily
• Wash the air fi lters with neutral detergent thinned with
lukewarm water, then dry them up in the shade.
4. Reattach the fi lters.
5. Close the front panel
slowly.
• Press the panel at both sides and the center.
• Make sure that the front panel is securely fi xed.
Care and Cleaning
19
Care
Titanium apatite photocatalytic air-purifying fi lter
1. Open the front panel and
pull out the air fi lters.
Page 18
2. Take off the titanium apatite
photocatalytic air-purifying
fi lters.
• Remove the fi lters from the tabs.
3. Clean or replace the
titanium apatite
photocatalytic air-purifying
fi lters.
[Cleaning]
3-1 Vacuum dust, and soak in lukewarm
water or water for about 10 to
15 minutes if very dirty.
• Do not remove the fi lter from the frame when
washing with water.
3-2 After washing, shake off remaining
water and let them dry in the shade.
• Do not wring out the fi lter to remove water from it.
[Replacement]
Remove the fi lter from the tabs
and prepare a new one.
• Dispose of the old fi lter as non-fl ammable waste.
4. Insert the titanium apatite
photocatalytic air-purifying
fi lters as they were.
• When attaching the fi lter, check that the fi lter is
properly set in the tabs.
5. Reattach the fi lters.
Page 18
6. Close the front panel
slowly.
Page 18
NOTE
• Operation with dirty fi lters:
− cannot deodorize the air,
− cannot clean the air,
− results in poor heating or cooling,
− may cause odor.
• Dispose of old fi lters as non-fl ammable waste.
• To order a titanium apatite photocatalytic air-purifying fi lter, contact
the dealer where you bought the air conditioner.
Item
Titanium apatite photocatalytic
air-purifying fi lter 1 set
Part No. KAF970A46
Care and Cleaning
20
When the Need Arises
Prior to a long period of non-use
1. Operate the FAN ONLY mode for several hours to dry out the
inside.
• Press
.
2. After operation stops, turn off the circuit breaker for the room
air conditioner.
3. Take out the batteries from the remote controller.
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 qualifi ed contractor in addition to regular cleaning by
the user.
• For qualifi ed contractor maintenance, please contact the dealer where you bought the air conditioner.
Care and Cleaning
21
Care
FAQ
Indoor unit
Outdoor unit
Operation does not start soon.
When
or any direct operation button
was pressed soon after operation was
stopped.
When the mode was reselected.
• This is to protect the air conditioner.
You should wait for about 3 minutes.
The fl ap does not start swinging
immediately.
• The air conditioner is adjusting the position of the fl ap.
The fl ap will start moving soon.
Different sounds are heard.
A sound like fl owing 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 can be heard when the water is
pumped out from the air conditioner during COOL or
DRY 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 cabinet and frame
of the air conditioner slightly expand or shrink as a
result of temperature changes.
Whistling sound
• This sound is generated when refrigerant fl ows during
defrosting operation.
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.
In HEAT operation
• The frost on the outdoor unit melts into water or steam when the air
conditioner is in defrosting operation.
In COOL or DRY operation
• Moisture in the air condenses into water on the cool surface of the outdoor
unit piping and drips.
HEAT operation stops suddenly
and a
fl owing sound is heard.
• The outdoor unit is defrosting. HEAT operation starts
after the frost on the outdoor unit has been removed.
This can take about 4 to 12 minutes.
The air conditioner stops generating
airfl ow during HEAT operation.
• Once the set temperature is reached, the airfl ow rate is
reduced and operation stopped in order to avoid
generating a cool airfl ow. Operation will resume
automatically when the indoor temperature falls.
22
When the Need Arises
22
Before making an inquiry or a request for repair, please check the following.
If the problem persists, consult your dealer.
Not a problem
This case is not a problem.
Check
Please check again before requesting
repairs.
The air conditioner does not operate
Case Description / what to check
OPERATION lamp is off.
• Has the circuit breaker been tripped or the fuse blown?
• Is there a power failure?
• Are batteries set in the remote controller?
OPERATION lamp is blinking.
• Turn off the power with the circuit breaker and restart operation with the remote controller.
If the OPERATION lamp is still blinking, check the error code and consult your dealer.
Page 25
The air conditioner suddenly stops operating
Case Description / what to check
OPERATION lamp is on.
• To protect the system, the air conditioner may stop operating after sudden large voltage
fl uctuations. It automatically resumes operation in about 3 minutes.
OPERATION lamp is blinking.
• Is there anything blocking the air inlet or air outlet of the indoor unit or outdoor unit?
Stop operation and after turning off the circuit breaker, remove the obstruction. Then restart
operation with the remote controller. If the OPERATION lamp is still blinking, check the error
code and consult your dealer.
Page 25
The air conditioner does not stop operating
Case Description / what to check
The air conditioner continues
operating even after operation is
stopped.
Immediately after the air conditioner is stopped
• The outdoor unit fan continues rotating for about another 1 minute to protect the system.
While the air conditioner is not in operation
• When the outdoor temperature is high, the outdoor unit fan may start rotating to protect
the system.
The room does not cool down / warm up
Case Description / what to check
Air does not come out.
In HEAT operation
• The air conditioner is warming up. Wait for about 1 to 4 minutes.
• During defrosting operation, hot air does not fl ow out of the indoor unit.
Air does not come out /
Air comes out.
Is the airfl ow rate setting appropriate?
• Is the airfl ow rate setting low, such as “Indoor unit quiet” or “Airfl ow rate 1”? Increase the
airfl ow rate setting.
Is the set temperature appropriate?
Is the adjustment of the airfl ow direction appropriate?
Air comes out.
• Is there any furniture directly under or beside the indoor unit?
• Is the air conditioner in ECONO operation?
Page 14
• Are the air fi lters dirty?
• Is there anything blocking the air inlet or air outlet of the indoor unit or outdoor unit?
• Is a window or door open?
• Is an exhaust fan turning?
Troubleshooting
23
When the Need Arises
Mist comes out
Case Description / what to check
Mist comes out of the indoor unit.
• This happens when the air in the room is cooled into mist by the cold airfl ow during COOL
or other operation.
Remote controller
Case Description / what to check
The unit does not receive signals
from the remote controller or has
a limited operating range.
• The batteries may be exhausted.
Replace both batteries with new dry batteries AAA.LR03 (alkaline).
For details, refer to “Preparation Before Operation”.
Page 8
• Signal communication may be disabled if an electronic-starter-type fl uorescent lamp (such
as inverter-type lamps) is in the room. Consult your dealer if that is the case.
• The remote controller may not function correctly if the transmitter is exposed to direct
sunlight.
LCD is faint, is not working, or the
display is erratic.
• The batteries may be exhausted.
Replace both batteries with new dry batteries AAA.LR03 (alkaline).
For details, refer to “Preparation Before Operation”.
Page 8
Other electric devices start
operating.
• If the remote controller activates other electric devices, move them away or consult your
dealer.
Air has an odor
Case Description / what to check
The air conditioner gives off an
odor.
• The room odor absorbed in the unit is discharged with the airfl ow.
We recommend you to have the indoor unit cleaned. Please consult your dealer.
Others
Case Description / what to check
The air conditioner suddenly
starts behaving strangely during
operation.
• The air conditioner may malfunction due to lightning or radio.
If the air conditioner malfunctions, turn off the power with the circuit breaker and restart the
operation with the remote controller.
Notes on the operating conditions
• If operation continues under any conditions other than those listed in the
table,
− A safety device may activate to stop the operation.
− Dew may form on the indoor unit and drip from it when COOL or DRY
operation is selected.
Mode Operating conditions
COOL / DRY
Outdoor temperature: -10 – 46°C
Indoor temperature: 18 – 32°C
Indoor humidity: 80% max.
HEAT
Outdoor temperature: -15 – 24°C
Indoor temperature: 10 – 30°C
Troubleshooting
24
When the Need Arises
Troubleshooting
Call the service shop immediately
WARNING
When an abnormality (such as a burning smell) occurs, stop operation and turn off the circuit breaker.
• Continued operation in an abnormal condition may result in troubles, electric shocks or fi re.
• Consult the service shop where you bought the air conditioner.
Do not attempt to repair or modify the air conditioner by yourself.
• Incorrect work may result in electric shocks or fi re.
• Consult the service shop where you bought the air conditioner.
If one of the following symptoms takes place, call the service shop immediately.
• The power cord is abnormally hot or damaged.
• An abnormal sound is heard during operation.
• The safety breaker, a fuse, or the earth leakage
breaker cuts off the operation frequently.
• A switch or a button often fails to work properly.
• There is a burning smell.
• Water leaks from the indoor unit.
Turn the breaker off and call the service shop.
After a power failure
• The air conditioner automatically resumes operation in about 3 minutes. You should just wait for a while.
Lightning
• If lightning may strike the neighbouring area, stop operation and turn the breaker off for system protection.
Disposal requirements
Your product and the batteries supplied with the controller are marked with this symbol. This symbol means that
electrical and electronic products and batteries shall not be mixed with unsorted household waste.
For batteries, a chemical symbol can be printed beneath the symbol. This chemical symbol means that the battery
contains a heavy metal above a certain concentration. Possible chemical symbols are:
■Pb: lead (>0.004%)
Do not try to dismantle the system yourself: the dismantling of the product, treatment of the refrigerant, of oil and of other parts
must be done by a qualifi ed installer in accordance with relevant local and national legislation.
Units and waste batteries must be treated at a specialized treatment facility for re-use, recycling and recovery.
By ensuring correct disposal, you will help to prevent potential negative consequences for the environment and human health.
Please contact the installer or local authority for more information. Dismantling of the unit, handling of the refrigerant, oil and other
parts, should be done in accordance with the relevant local and national regulations.
Troubleshooting
25
When the Need Arises
25
Fault diagnosis by remote controller
• The remote controller can receive relevant error codes from the indoor unit.
1. When
is held down for about
5 seconds, “ ” blinks in the temperature
display section.
2. Press
repeatedly until a continuous beep
is produced.
• The code indication changes as shown below, and notifi es you with a long beep.
CODE
MEANING
SYSTEM
00
NORMAL
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)
INDOOR
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
OUTDOOR
UNIT
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
• A short beep indicates non-corresponding codes.
• To cancel the code display, hold
down for about 5 seconds. The code display also clears if no button is pressed for 1 minute.
26
3P393186-2E
2015.04
Copyright 2014 Daikin
