Mitsubishi Heavy Industries DXK05Z7-W User manual

RLH012A002C
DXK05Z7-W
DXK07Z7-W
DXK09Z7-W
DXK12Z7-W
DXK18Z7-W
ORIGINAL INSTRUCTIONS
MANUEL DE L’UTILISATEUR
CLIMATISEUR
USER’S MANUAL
AIR-CONDITIONER
ANWENDERHANDBUCH
KLIMAGERA
¨T
ISTRUZIONI PER L’USO
CONDIZIONATORE D’ARIA
MANUAL DEL PROPIETARIO
ACONDICIONADOR DE AIRE
GEBRUIKERSHANDLEIDING
AIRCONDITIONING
MANUAL DO UTILIZADOR
APARELHO DE AR CONDICIONADO
ɊɍɄɈȼɈȾɋɌȼɈ ɉɈ ɗɄɋɉɅɍȺɌȺɐɂɂ
ɄɈɇȾɂɐɂɈɇȿɊ ȼɈɁȾɍɏȺ
ENGLISH
DEUTSCH
ITALIANO
ESPAN
˜OL
NEDERLANDS
PORTUGUÊS
ɊɍɋɋɄɂɃ
FRANÇAIS
ΕΛΛΗΝΙΚΑ
KULLANIM KILAVUZU
ΟΔΗΓΙΕΣ ΧΡΗΣΗΣ
ΚΛΙΜΑΤΙΣΤΙΚΟ
TÜRKÇE
USER’S MANUAL
AIR-CONDITIONER
202201
RLH012A002C_Cover.indd 1 2021/12/6 13:16:48

RLH012A002C_Cover.indd 2 2021/12/6 13:16:49

EN-1
Thank you for purchasing a MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
Air-Conditioner. To get the best long-lasting performance, please read and follow this user’s manual
carefully before using your air-conditioner. After reading, please store the manual in a safe place
and refer to it for operational questions or in the event of any irregularities.
ENGLISH
Your air-conditioner is marked with this symbol. It means that waste electrical and
electronic equipment (WEEE as in directive 2012/19/EU) should not be mixed with
general household waste. Air-conditioner should be treated at an authorized treatment
facility for re-use, recycling and recovery and not be disposed of in the municipal
waste stream. Please contact the installer or local authority for more information.
This symbol printed on the batteries attached to your air-conditioner is information
for end-users according to the EU directive 2006/66/EC article 20 annex II.
Batteries, at their end-of-life, should be disposed of separately from general
household waste. If a chemical symbol is printed beneath the symbol
shown above, this chemical symbol means that the batteries contain a
heavy metal at a certain concentration. This will be indicated as follows:
Hg:mercury(0.0005 %), Cd:cadmium(0.002 %), Pb:lead(0.004 %)
Please, dispose of batteries correctly at your local community waste
collection or the recycling center.
The emission sound pressure level from each Indoor and Outdoor unit is under 70 dB(A).
contents
Safety precautions..........................................2
Tips for effective operation .............................7
Name of each part and its function.................8
Remote control .............................................10
Operation failure with the remote control......10
Temporary run operation ..............................10
Installing two air-conditioners
in the same room..........................................11
Child lock ......................................................11
Airflow range setting.....................................12
Operation and display section
for remote control .........................................13
Current time setting .....................................14
AUTO mode operation..................................14
Temperature adjustment during AUTO mode ...15
FAN SPEED .................................................15
COOL/HEAT/DRY/FAN mode operation.......16
Air-conditioner operation temperature range ....16
Characteristics of HEAT mode operation......16
Airflow direction adjustment..........................17
3D AUTO operation ......................................17
SLEEP TIMER operation ..............................18
OFF TIMER operation ..................................18
ON TIMER operation ....................................19
SLEEP TIMER + ON TIMER operation ........19
PROGRAM TIMER operation ......................20
ALLERGEN CLEAR operation .....................20
HIGH POWER/ECONOMY operation...........21
NIGHT SETBACK operation.........................22
SILENT operation .........................................22
MENU function
Wireless LAN connection setting ...............23
Backlight setting.........................................23
Display brightness adjustment...................24
SELF CLEAN operation.............................24
Fan control in heating thermo - OFF..........25
SILENT mode setting.................................26
Wireless LAN communication setting ........26
Initialization of wireless LAN setting .............27
PRESET operation .......................................28
Maintenance.................................................29
Proper installation.........................................31
Troubleshooting ...........................................31
Notice ...........................................................31
Contact your dealer ......................................33
Auto restart function .....................................33
Self diagnosis function..................................34
RLH012A002C_EN.indd 1 2021/12/13 13:13:08

EN-2
Safety precautions
x Before starting to use the system, please read these “Safety precautions” carefully to ensure
proper operation of the system.
x When you have read this user’s manual, please keep it safely. If someone else takes over as
user, make sure that the manual is also passed on to the new user.
WARNING
Indicates a potentially hazardous situation which, if not avoided, can
result in serious consequences such as death or severe injury.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, can
result in personal injury or property damage.
Please observe these precautions with great care, since they are essential to your safety.
x Symbols which appear frequently in the text have the following meaning:
Strictly prohibited Observe instructions
with great care Provide proper earthing
The user’s manual should be read
carefully. A service personnel should be
handing this equipment with
reference to the installation
manual.
There is information included
in the user’s manual and/or
installation manual.
❚Following precaution is for R32.
This equipment uses Àammable refrigerants. If the refrigerant is leaked,
together with an external ignition source, there is a possibility of ignition.
WARNING
x Strict compliance of the domestic laws must
be observed when disposing the appliance.
x Do not use means to accelerate the
defrosting process or to clean, other than
those recommended by the manufacturer.
x The appliance shall be stored in a room
without continuously operating ignition
sources (for example: open Àames, an
operating gas appliance or an operating
electric heater).
x Do not pierce or burn.
x Be aware that refrigerants may not contain an
odour.
x The appliance shall be stored in a well-
ventilated area where the room size
corresponds to the room area as speci¿ed for
operation.
x The staႇin servicing operations must hold
the national quali¿cation or other relevant
quali¿cations.
x The indoor unit shall be stored in a room that
has a minimum area of 4.0 m
2
.*
*
This value is for split system. In the case of
multi system, see the installation sheet of
outdoor unit.
RLH012A002C_EN.indd 2 2021/12/13 13:13:08

EN-3
❚Safety precautions
❚INSTALLATION PRECAUTIONS
WARNING
x The system is for domestic and residential use.
If used in severe environments, such as an engineering workplace, the equipment may
function poorly.
x The system must be installed by your dealer or a qualified installer.
It is not advisable to install the system by yourself, as faulty handling may cause
leakage of water, electric shock or fire.
CAUTION
x Do not install it where flammable gas may leak.
Gas leaks may cause fire.
x Make sure that an earth leakage
breaker is installed.
If you do not install an earth leakage
breaker, you may get an electric shock.
x Make sure to install the drain hose
properly so that all the water is drained
out.
Improper installation may lead to water
drop in the room resulting in wet furniture.
x Make sure that the system has been properly earthed.
Earth wire should never be connected to a gas pipe, water pipe, lightning conductor
or telephone earth wire. Improper installation of the earth wire may cause an electric
shock.
This Product contains fluorinated greenhouse gases.
Do not vent R32 into the atmosphere: R32 is a fluorinated greenhouse gas with a Global Warming
Potential (GWP) = 675.
Refer to a label on outdoor unit for the weight of fluorinated greenhouse gas and CO2equivalent.
RLH012A002C_EN.indd 3 2021/12/13 13:13:08

EN-4
❚Safety precautions
❚OPERATION PRECAUTIONSWARNING
x Children shall not play with the
air-conditioner.
x Do not expose yourself to the cooling
air for a long period.
This could affect your physical condition
and cause health problems.
x Cleaning and user maintenance shall
not be made by children without
supervision.
x Do not insert anything into the air
outlet.
This may cause injury, as the internal fan
rotates at high speed.
x This air-conditioner can be used by children aged from 8 years and above
and people with reduced physical, sensory or mental capabilities or lack of
experience and knowledge, if they have been given supervision or instruction
concerning use of the air-conditioner in a safe way and understand the hazards
involved.
x Store the remote control out of reach of children.
Failure to observe this may result in the batteries being swallowed or other accidents.
CAUTION
x Only use approved fuses.
Use of steel or copper wire instead of an
approved fuse is strictly prohibited, as it
may cause a breakdown or fire.
x Do not handle the switches with wet
hands.
This may cause an electric shock.
x Do not swing from the indoor unit.
If the indoor unit falls down, you may get
injured.
x Do not place a flammable insecticide
or paint spray near the air-conditioner,
nor spray it directly on the system.
This may result in a fire.
x Do not expose any combustion
appliance directly to the air stream of
the air-conditioner.
The combustion appliance may
malfunction.
x Do not wash the air-conditioner with
water.
This could cause an electric shock.
Using a high pressure washer may cause
damage to the aluminum fins, resulting in
performance decrement.
x Do not use for preservation of food,
plants or animals, precision devices or
works of art.
The system is only intended for use in
ordinary domestic rooms. Any other use
of the system may damage the quality of
food, etc.
x Do not place anything containing
water, like vases, on top of the unit.
Water entering the unit could damage the
insulation and therefore cause an electric
shock.
x Do not install the air-conditioner where
the airflow direction is aimed directly at
plants or animals.
This will damage their health.
x Do not step/sit on the unit nor put
anything on it.
If the unit falls down or things drop from it,
people could get hurt.
x After a long period of use, check the
unit’s support structure regularly.
If you do not repair any damage right
away, the unit may fall down and cause
personal injury.
RLH012A002C_EN.indd 4 2021/12/13 13:13:08

EN-5
❚Safety precautions
CAUTION
x Do not touch the aluminum fins on the
heat exchanger.
It may result in injury.
x Do not place household electrical
appliances or household items under-
neath the indoor or outdoor units.
Condensation falling from the unit may
stain objects and cause accidents or
electrical shock.
x Do not operate the system without the
air filter.
It can cause malfunction of the system
due to clogging of the heat exchanger.
x Do not shut off the power source
immediately after stopping the
operation.
Wait at least 5 minutes, otherwise there is
a risk of water leakage or breakdown.
x Do not control the system with main
power switch.
It can cause fire or water leakage. In
addition, the fan can start unexpectedly,
which can cause personal injury.
x Do not pour liquid into the unit and do
not put water container on the unit.
Water entering the unit could damage the
insulation and therefore cause an electric
shock.
x If you operate air-conditioner together
with a combustion appliance, you must
regularly ventilate the indoor air.
Insufficient ventilation may cause
accidents due to oxygen deficiency.
x Stand firmly on a stepladder or other
stable object when removing the inlet
panel and filters.
Failure to observe this may result in injury
through insecure objects toppling over.
x When you clean air-conditioner, stop
the unit and turn off the power source.
Never open the panel while the internal
fan is rotating.
x Do not place objects near the outdoor
unit or allow leaves to gather around
the unit.
If there are objects or leaves around the
outdoor unit, small animals may enter
unit and contact electrical parts and may
cause a break-down, smoke or fire.
x Contact your dealer to clean inside the
indoor unit, do not attempt to do by
yourself.
The use of a non-approved detergent or
improper washing method may damage
the unit’s plastic components and cause
leaks. Damage, smoke, or fire may also
happen if the detergent comes in contact
with electrical parts or the unit’s motor.
x Stop the unit and turn off the power if
you hear thunder or there is a danger
of lightning.
It may damage the unit.
x If the power cable becomes damaged,
contact your dealer or a qualified
installer.
If it is not replaced, it may cause a
breakdown or fire.
RLH012A002C_EN.indd 5 2021/12/13 13:13:08

EN-6
❚Safety precautions
❚WIRELESS LAN PRECAUTIONS
WARNING
x Do not turn ON the wireless LAN communication near automatic control
equipment such as an automatic door or fire-alarm device.
It may cause an accident due to malfunction of equipment.
x Do not turn ON the wireless LAN communication in a hospital, etc. where the use
of wireless devices is prohibited.
It may cause malfunction of medical equipment due to a wireless device.
x Do not turn ON the wireless LAN communication near a person with a cardiac
pacemaker or implanted defibrillator.
It may cause malfunction of a medical device.
CAUTION
x Do not turn ON the wireless LAN communication near another wireless device,
microwave, cordless phone, fax machine, etc.
It may cause malfunction of wireless device.
x When operating the air-conditioner from outdoors, fully confirm the statuses of
the unit, its periphery, and persons in the room beforehand.
It may cause damage to your health, contamination of household goods, or negative
effects on animals.
x When someone is in the room, notify him/her that the air-conditioner is to be
operated from outdoors.
It may cause damage to your health.
x Check the operational status periodically.
Sudden indoor/outdoor temperature changes may disturb your health.
RLH012A002C_EN.indd 6 2021/12/13 13:13:08

EN-7
❚Safety precautions
❚PRECAUTIONS FOR RELOCATION OR REPAIRS
WARNING
x Do not perform any repairs or modifications by yourself. Consult the dealer if the
unit requires repair.
If you repair or modify the unit, it can cause water leaks, electric shocks or fire.
x Consult your dealer for repairs.
Wrong repairs could cause an electric
shock, fire, etc.
x In case the air-conditioner is relocated
elsewhere, contact your dealer or a
qualified installer.
Faulty installation may cause water
leakage, electric shock, fire, etc.
x If you notice anything abnormal (smell
of burning, etc.), stop the system, turn
off the power source and consult your
dealer.
Continued use of the system in
abnormal circumstances can result in
malfunctioning, electric shock, fire, etc.
x If the air-conditioner fails to cool
or warm the room, it may have a
refrigerant leakage. Contact your
dealer.
If refrigerant needs to be added,
check with your dealer for proper
instructions.
If the refrigerant comes in contact with the
bare skin, it may cause cold injury.
If the refrigerant gas is inhaled
excessively, it may cause deterioration
of nerve function like dizziness and
headache, or deterioration of heart
function like irregular heartbeat and heart
palpitation temporarily. If refrigerant
unexpectedly leaks from the unit onto
a fan heater, stove, hotplate or other
heat source, harmful gases could be
generated.
Tips for effective operation
■Please observe the following for the most economic and comfortable use of your unit.
xSet a suitable room temperature.
Excessively high or low temperatures are not good for your health and waste of electricity.
xClean the filters frequently.
Clogged filters may block the airflow and cause less efficient operation. Page 29
xAvoid direct sunlight and draught.
Cut out direct sunlight by drawing the curtains or blinds when cooling. Keep windows and doors shut, except when ventilating.
xAdjust the airflow direction properly.
Adjust the up/down and left/right airflow to ensure a steady room temperature.
xOperate the unit only when needed.
Use the timer properly to operate the unit only when needed.
xKeep heat source away when cooling.
Keep heat sources out of the room as much as possible.
RLH012A002C_EN.indd 7 2021/12/13 13:13:08

EN-8
Name of each part and its function
Air inlet panel Air inlet
Air filters
Air outlet
Room
temperature
sensor
Heat exchanger
(Aluminum fin)
Heat exchanger
(Aluminum fin)
Fan
xInside of
the unit
Louvers
(Vertical blades)
xLeft / right airflow
direction adjustment
Flaps
(Horizontal blades)
xUp / down airflow
direction adjustment
Page 29
Page 29
OUTDOOR UNIT
INDOOR UNIT Air-cleaning filter
Page 30
xAllergen clear filter
(Light orange)
Air inlet
(back and side)
Fan
xInside of the unit
Refrigerant pipe
and electric wire
Drain hose
Drain hole
IT MIGHT CAUSE INJURY.
DO NOT STEP ON TOP OF THIS UNIT.
WARNING
DO NOT INSERT ANYTHING
INTO THE AIR OUTLET.
IT MIGHT CAUSE INJURY.
DO NOT TOUCH THE
ALUMINUM FINS.
IT MIGHT CAUSE INJURY.
SHARP EDGE OF FINSMOVING FAN BLADES
CAUTION
Don't touch
the terminal
Don't touch
refrigerant
pipings and
connections.
block.
Model name
Unit display
section
Page 9
DO NOT INSERT ANYTHING
INTO THE AIR OUTLET
WARNING
This equipment uses
flammable refrigerant.
Page 2
Model name and refrigerant type
This equipment
uses flammable
refrigerant.
Page 2
Do not wash the inside of the air
conditioner.Water leakage and
permanent damage may result.
Electrical hazard exists.
Caution,high voltage,shut off power
before servicing fan and fan motor.
WARNING
By the following operation,forced
Reconnect power supply. Hold the
ON/OFF switch down for 5 seconds
cooling operation is possible.
until hear a beep.
Isolate the power supply.
QR code
• You can check
the SSID and
KEY (Password).
Air outlet
* The appearance varies by models
RLH012A002C_EN.indd 8 2021/12/13 13:13:08

EN-9
Unit display section
Name of each part and its function
xBuzzer sound for remote control
Buzzer sound (PipPip) is produced when
preset temperature is set to 24 °C or,
AUTO operation mode is selected or,
automatic airflow is selected (except DRY and FAN mode operation).
Buzzer sound (Pip) is produced when
air-conditioner is turned off by pressing ON/OFF button (except SELF CLEAN operation).
Buzzer sound (Peep Pip) is produced when
Wireless LAN connection setting,
Wireless LAN communication setting.
xBacklight for remote control
Press the button of the remote control lights the backlight.
The backlight turns off automatically if there is no operation for certain period of time.
The backlight can be turned on/off. page 23
NOTE
Preset temperature
Airflow setting
Remote control Remote control
holder
Allergen clear filter
(Light orange)
Battery × 2
(R03 (AAA, Micro))
Wood screw × 2
(for remote control holder mounting)
Accessories
Pip Pip Pip Pip Pip
Pip Pip Pip Pip Pip
Pip Pip
RUN light (green)
xIlluminates during operation.
xBlinks slowly when SELF CLEAN operation
(3 seconds ON, 1 second OFF).
xBlinks when airflow is stopped to
prevent blowing out of cold air in
heating operation. (1.5 seconds ON,
0.5 seconds OFF)
Page 24
Page 31
This button can be used for turning on/off
the unit when a remote control is not available.
Page 10
Unit ON/OFF button
TIMER light (yellow)
Illuminates during TIMER operation.
Page 18-20
Remote control signal receiver
RLH012A002C_EN.indd 9 2021/12/13 13:13:08

EN-10
Remote control
Setting the batteries
The following cases show exhausted batteries. Replace old batteries with new ones.
xReceiving beep is not emitted when a signal is transmitted.
xDisplay fades away.
NOTE
xDo not mix old and new batteries, or batteries of different types (manganese/
alkaline).
xAlkaline batteries are recommended.
xRemove the batteries when the remote control is not used for a long period.
xThe recommended effective period of a battery conforming to JIS or IEC
should be 6 to 12 months with normal use. If used longer, or when an
unspecified battery is used, liquid may leak from the battery, causing the
remote control to malfunction.
xThe recommendable effective period is printed on the battery. This may be
shorter due to manufacturing time to the unit. However, the battery may still
be in working order after expiry of its nominal life.
Remove the cover.
Insert new batteries.
R03 (AAA, Micro) × 2 or
LR03 (AAA, Micro) × 2
Close the cover.
■When the display shows any abnormal condition, press the ACL switch with the
tip of a ballpoint pen.
1
2
3
Pay attention to
the and
marks
4
The remote control can be attached to a wall or pillar
by using the remote control holder. Before installing the
remote control, check that the air-conditioner receives
the signals properly.
For installing or removing the remote control, move it up
or down in the holder.
Using the remote control holder
Warning note for remote control
xAre the batteries running down?
“Setting the batteries” above.
Replace the batteries with new ones and retry the
operation.
Operation failure with the remote control
xIf the operation fails, operate the unit with temporary run
operation function.
“Temporary run operation” below.
Strictly prohibited
xDo not drop the remote control.
Handle with care.
x Do not take remote control near
high temperature places, such as an
electric heating carpet or a stove.
xDo not place heavy objects on the
remote control, or step on it.
xDo not put any obstructing
obstacles between the remote
control and the unit.
xDo not spill any liquid on the
remote control.
xDo not leave the remote control
exposed to direct sunlight or other
strong lighting.
Temporary run operation
xThe unit ON/OFF button on the unit operates ON/OFF temporarily when the remote control is not used.
Operation program
• OPERATION MODE : AUTO
• FAN SPEED : AUTO
• AIRFLOW : AUTO
xOperation starts by pressing the unit ON/OFF button; it stops if you press
the button again.
xDo not keep pressing the unit ON/OFF button down for 5 seconds or more.
(Pressing it 5 seconds or more sets the forced cooling operation used during servicing or when relocating the air-conditioner.)
NOTE
Press the ACL switch with
the tip of a ballpoint pen.
xSet the current time.
Page 14 Current time
setting Step 2
Contact your dealer to have the remote control checked.
Unit ON/OFF button
RLH012A002C_EN.indd 10 2021/12/13 13:13:09

EN-11
Installing two air-conditioners in the same room
■When two air-conditioners are installed in the same room, use this setting when the two air-conditioners are not operated with one
remote control. Set the remote control and indoor unit.
Remove the cover and take out
batteries.
Disconnect the switching line next to
the battery with wire cutters.
Setting the remote control
1
2
Disconnect
Insert batteries.
Close the cover.
3
Turn off the power source and turn it on after 1 minute.
Point the remote control (that was set according to the
procedure described on the left side) at the indoor unit
and send a signal by pressing the ACL switch on the
remote control.
Check that the reception buzzer sound “peep” is
emitted from the indoor unit.
At completion of the setting, the indoor unit emits a buzzer sound
“peep”. (If no reception sound is emitted, start the setting from the
beginning again.)
Setting an indoor unit
1
2
3
Since the signal is sent in
about 6 seconds after the
ACL switch is pressed,
point the remote control
at the indoor unit for some
time.
Child lock
■This function locks the remote control operation to prevent an operation error.
1Press the AIRFLOW L/R (LEFT/RIGHT) button for 3
seconds or more.
is displayed. When Child lock is set, only the ON/OFF button can be
operated.
How to cancel
Turn off the light by pressing the AIRFLOW L/R (LEFT/RIGHT) button for 3
seconds or more.
xWhile Child lock is set, the settings of operation mode, temperature, fan
speed and airflow direction cannot be changed. To change the settings,
reset Child lock.
NOTE
Reception
peep
RLH012A002C_EN.indd 11 2021/12/13 13:13:09

EN-12
Airflow range setting
■Take the air-conditioner location into account and adjust the left/right airflow range to maximize air-conditioning.
1If the air-conditioner is running, press the ON/OFF
button to stop.
The airflow range setting cannot be made while the unit is running.
2Press the AIRFLOW U/D (UP/DOWN) button and the
AIRFLOW L/R (LEFT/RIGHT) button together for
5 seconds or more.
The airflow range setting display illuminates.
3Setting the airflow range.
Press the AIRFLOW L/R (LEFT/RIGHT) button and adjust to the desired
location.
Each time the AIRFLOW L/R (LEFT/RIGHT) button is pressed, the display is
switched in the order of:
(Center Installation) (Right End Installation) (Left End Installation)
4Press the ON/OFF button.
The air-conditioner’s airflow range is set.
Press within 60 seconds of setting the airflow range (while the airflow range
setting display illuminates).
The diagram below indicates the airflow ranges corresponding to the air-conditioner’s installation location. Consider your room’s layout
and set the airflow range to maximize air-conditioning.
Air-conditioner installation location and airflow range
Airflow range Airflow range Airflow range
(Left End Installation) (Center Installation) (Right End Installation)
xOnce the airflow range setting is configured, it is stored in the air-conditioner even if the power source is turned off. To change the
airflow range setting, set range again with the remote control.
xDuring the operation, an airflow range setting cannot be set.
xWhen the air-conditioner is installed at the location within 50 cm from the wall, it is recommended to change the airflow range setting
to “Right End Installation” or “Left End Installation”.
NOTE
RLH012A002C_EN.indd 12 2021/12/13 13:13:09

EN-13
The above illustration shows all
controls, but in practice only the
relevant parts are shown.
Operation and display section for remote control
Transmission procedure
When each button on the remote control is
pressed – with the remote control pointing
towards the air-conditioner unit, a signal is
transmitted.
When the air-conditioner receives the signal
correctly, it will beep.
The current time and present
OPERATING MODE are displayed
while the air-conditioner is turned off.
[View with the cover opened]
Display in OFF status
ON/OFF (luminous) button
Press to start operation, press again
to stop.
CANCEL button
This button cancels the ON timer, OFF
timer, and SLEEP operation.
Transmission section
Hi/ECO button
This button changes the HIGH POWER/
ECONOMY operation.
Page 21
AIRFLOW (LEFT/RIGHT)/Child
lock button
This button changes the airflow (left/
right) direction.
Page 17
SLEEP button
This button selects SLEEP operation.
Page 18
AIRFLOW (UP/DOWN) button
This button changes the airflow (up/
down) direction.
Page 17
NIGHT SETBACK button
This button sets NIGHT SETBACK
operation.
Page 22
ACL switch
This switch resets the program to default
state.
Page 10, 14
TIME SET UP switch
This switch is used for setting the time.
Page 14
This button use to set Child lock.
Page 11
TEMP/TIMER button
This button sets the room temperature.
This button is used for setting the current
time and timer function.
OPERATION MODE select button
Each time the button is pressed, the
mode changes.
Page 14,16
SILENT button
This button sets the SILENT operation.
Page 22
ALLERGEN CLEAR button
This button selects ALLERGEN
CLEAR operation.
Page 20
ON TIMER button
This button selects ON TIMER operation.
Page 19
OFF TIMER button
This button selects OFF TIMER
operation.
Page 18
MENU switch
This switch selects the MENU function.
Page 23
LCD screen
Press the button of the remote control
lights the backlight.
The backlight can be turned on/off.
Page 9
Page 23
FAN SPEED/PRESET button
Each time the button is pressed, the fan
speed changes.
This button sets the PRESET operation.
Page 15
Page 28
3D AUTO button
This button sets 3D AUTO operation.
Page 17
RLH012A002C_EN.indd 13 2021/12/13 13:13:09

EN-14
AUTO mode operation
■Automatically selects the operation mode (COOL, HEAT) depending on the room temperature when switched on.
xIf you do not want the AUTO mode program, change to COOL, HEAT or FAN
instead of AUTO.
Page 16
xAirflow direction adjustment procedure.
Page 17
To stop: Press the ON/OFF button.
Press the MODE button.
The mode changes whenever the button is pressed.
Set to .
Press the ON/OFF button.
1
2
Current time setting
■When inserting the batteries, the current time is automatically set to time setting mode.
13:00 is displayed as the current time. Set the clock to the right time.
2
1
3
Example: Set to 10:30.
Press the TIME SET UP switch.
Press with the tip of a ballpoint pen, etc.
The time display blinks and can be set to the current time.
Press the “ or (TEMP/TIMER)” button.
(Set to 10:30)
Press the ON/OFF button.
The time display changes from blinking to steady lighting and the setting is
complete.
Make sure to press the button within 60 seconds from the last operation in
step 2, otherwise the time will not be set.
xThe timer operation works based on the time clock, so set it correctly.
xThe remote control data will be reset when the present time is set.
xWhen the battery of the remote control is replaced or the ACL switch is
pressed, the remote control will be set to the initial state.
xIn case air is not blowing out during the operation.
Page 31
NOTE
NOTE
RLH012A002C_EN.indd 14 2021/12/13 13:13:09

EN-15
Temperature adjustment during AUTO mode
■Default preset temperature duringAUTO mode is 24 °C for both cooling and heating mode. However, it can be adjusted (Minimum 18 °C,
Maximum 30 °C) using button or button.
1Press the TEMP/TIMER button.
■Each time the button is pressed, the switch over occurs in the following order
18 ĺ18.5 ĺ............ 23.5 ĺ24 ĺ24.5 ......... ĺ30.
When 30 is indicated, even if the button is pressed, the indicator does not change.
■Each time the button is pressed, the switch over occurs in the following order
30 ĺ29.5 ĺ............ 24.5 ĺ24 ĺ23.5 ......... ĺ18.
When 18 is indicated, even if the button is pressed, the indicator does not change.
Press the button.
When it is a little cold
Press the button.
When it is a little hot
FAN SPEED
■The FAN SPEED can be set except for DRY mode.
Press the FAN SPEED button.
Press or button for the preferred fan speed.
1
xWhen FAN SPEED is changed from Hi to Lo or ULo, the sound of
refrigerant may be heard.
xWhen COOL mode is used if outside temperatures are low, the FAN
SPEED may change automatically to protect the air-conditioner.
Operation capacity by your choice FAN SPEED
Set automatically by microcomputer AUTO
Silent operation ULo
Energy-saving operation Lo
Standard operation Me
Powerful operation with high capacity Hi
NOTE
AUTO ULo Lo Me Hi
RLH012A002C_EN.indd 15 2021/12/13 13:13:09

EN-16
COOL/HEAT/DRY/FAN mode operation
Airflow direction adjustment procedure. Page 17
4
3
To stop: Press the ON/OFF button.
xIn case air is not blown out, when starting the heating
operation.
xThe operation mode can also be set or changed when the
air-conditioner is not in operation.
NOTE
2
1
Air-conditioner operation temperature range
■Use within the following operational range. Operating outside of this range may result in the protection devices being activated and
preventing the unit from working.
Characteristics of HEAT mode operation
Mechanism and capacity of HEAT mode operation
xThe unit draws heat from the cold outside air, transfers it to indoors and heats the room. As a characteristic of heat pump system, the
heating capacity reduces when the outside air temperature gets colder.
xIt may take some time to supply hot air after turning on the air-conditioner.
xIf the outside temperature becomes extremely low, it would be better to use an additional source of heating.
Defrosting
If the outside temperature becomes low and humidity is high, the heat exchanger in the outdoor unit may frost over, which prevents efficient heating.
If this happens, the automatic defrost function is activated and the heating operation stops for 5 to 15 minutes during defrosting.
xBoth indoor and outdoor fans stop and the RUN light blinks slowly (1.5 seconds ON, 0.5 seconds OFF) during defrosting.
xThe outdoor unit may release some steam during defrosting. This is to help the defrosting process and is not a defect.
xThe HEAT operation resumes as soon as defrosting has been completed.
Press the FAN SPEED button.
Set the fan speed as preferred.
A fan speed cannot be set under DRY operation. Page 15
Page 31
COOL HEAT DRY FAN
26 °C - 28 °C 20 °C - 24 °C 24 °C - 26 °C —
Press the MODE button.
Set to a required mode.
(COOL), (HEAT), (DRY), (FAN)
Press the ON/OFF button.
Press the TEMP/TIMER button.
Press or button for the preferred temperature.
Recommendation
COOL mode operation HEAT mode operation
Outside temperature Approximately -15 to 46 °C Approximately -15 to 24 °C
Inside temperature Approximately 18 to 32 °C Approximately 10 to 30 °C
Inside humidity
Below approximately 80 %
The long-term use of the unit with a humidity level
exceeding 80 % may result in condensation forming
on the surface of the indoor unit, leading to water
drops.
RLH012A002C_EN.indd 16 2021/12/13 13:13:09

EN-17
Airflow direction adjustment
Memory flap (Flap or louver stopped)
When you press the AIRFLOW (U/D or L/R) button once while the flap or louver is operating, it stops swinging at the position.
Since this angle is memorized in the microcomputer, the flap or louver will automatically be set at this angle when the next
operation is started. WARNING
xDo not expose directly to airflow from the air-conditioner for a long time.
CAUTION
xWhen in COOL or DRY operation, do not operate for a long period with the
airflow blowing straight down. Otherwise, condensation may appear on the
outlet grill and drip down.
xDo not try to adjust the flaps and louvers by hand, as the control angle may
change or the flap or louver may not be closed completely.
HEAT
(Horizontal
blowing)
(Slant forward
blowing)
COOL, DRY
xRecommended angle of the flap when
stopping
■ Up/down direction can be adjusted with the AIRFLOW U/D(UP/DOWN) button on the remote control. Every time you press this button,
the mode changes as follows:
Change on AIRFLOW(UP/DOWN) mode.
■Left/right direction can be adjusted with the AIRFLOW L/R(LEFT/RIGHT) button on the remote control. Every time you press this
button, the mode changes as follows:
Change on AIRFLOW(LEFT/RIGHT) mode.
xWhen heating operation starts, the flap and louver direction is fixed at the horizontal / center position in order to avoid cold draft. It
returns to the set position when the warm air supply is started.
xThe flap and louver direction will be controlled to the horizontal/center position when the room temperature reaches the set
temperature and compressor stops or when defrosting is in operation.
xThe airflow direction cannot be set during the period mentioned above. Change the airflow direction settings after the warm air is
supplied and the flap/louver goes to the set position.
(Louver stopped)
(Swing)
NOTE FOR HEATING OPERATION
xThe actual position of the flap and louver may differ from the display shown.
(Swing)
(Flap stopped)
NOTE
3D AUTO operation
■Fan speed and airflow direction are automatically controlled, allowing the entire room to be efficiently air-conditioned.
When the air-conditioner is turned off, start the operation from Step 1. When the air-conditioner is running, start from Step 2.
Press the ON/OFF button.
Press the 3D AUTO button.
Each time the 3D AUTO button is pressed, the display is switched in the
order of:
1
2
(Normal operation)(3D AUTO)
No display
x3D AUTO operation is canceled when you switch the operation mode.
xIf 3D AUTO operation is canceled then the airflow direction changes to that
used before 3D AUTO was set.
x
3D AUTO operation can be set in AUTO, COOL, or HEAT operation mode only.
How to cancel
Press the 3D AUTO button to turn off the 3D AUTO display.
NOTE
RLH012A002C_EN.indd 17 2021/12/13 13:13:09

EN-18
SLEEP TIMER operation
■The unit will stop automatically after the set time lapses.
The set temperature is automatically adjusted according to the lapse time in order to avoid too much cooling or heating. Page 20
How to cancel
Press the CANCEL button to turn off the SLEEP
display.
Changing of set time
Set a new time by pressing SLEEP button.
xSLEEP operation will not function during ALLERGEN CLEAR operation.
xSLEEP TIMER cannot be set simultaneously with OFF TIMER.
NOTE
OFF TIMER operation
■The unit stops automatically when the set time comes.
When the air-conditioner is turned off, start the operation from Step 1. When the air-conditioner is running, start from Step 2.
Example: You prefer it to stop 22:30.
Press the ON/OFF button.
Press the OFF TIMER button.
OFF TIMER display is blinking.
Press the TEMP/TIMER button.
Every time the button is pressed, the display is switched in the order of:
0:00 0:10 0:20
...
1:00 1:10
(Units of ten minutes)
Every time the button is pressed, the display is switched in the order of:
0:00 23:50 23:40
...
23:00 22:50
(Units of ten minutes)
Set at 22:30.
3
1
4Press the OFF TIMER button.
The display changes from blinking to steady lighting and the setting is
complete.
The timer light (yellow) is on.
2
How to cancel
Press the CANCEL button to turn off the timer
display.
xThe unit stops at the end of the set period of time.
xMake sure to press the button within 60 seconds from the last operation
in step 3, otherwise the setting is not completed.
xThe current time is not displayed during OFF TIMER operation.
xOFF TIMER operation will not function during ALLERGEN CLEAR
operation.
xDifferent from SLEEP TIMER operation, automatic set temperature
adjustment is not done during OFF TIMER operation.
Changing of set time
Set a new time by using the OFF TIMER button.
NOTE
■If it is pressed while the unit is off
SLEEP TIMER operation starts with the previous operation settings, and the
air-conditioner is turned off after the set time lapses.
■If it is pressed while the unit is running
The air-conditioner is turned off after the set time lapses.
Every time the button is pressed, the display changes as follows:
...
(Units of one hour)
No display
(canceled)
Example:You prefer it to stop after 3 hours.
Set to
Press the SLEEP button.
1
The timer light (yellow) is on.
The unit stops after the set time lapses.
RLH012A002C_EN.indd 18 2021/12/13 13:13:09