Mitsubishi Heavy Industries SRK20ZSX-WF User manual

MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
2-3, Marunouchi 3-chome, Chiyoda-ku, Tokyo, 100-8332, Japan
http://www.mhi-mth.co.jp/en/
MITSUBISHI HEAVY INDUSTRIES AIR-CONDITIONING EUROPE, LTD.
5 The Square, Stockley Park, Uxbridge, Middlesex, UB11 1ET, United Kingdom
Tel : [phone]
Fax: [phone]
http://www.mhiae.com/
MHIAE SERVICES B.V.
(Wholly-owned subsidiary of MITSUBISHI HEAVY INDUSTRIES AIR-CONDITIONING EUROPE, LTD.)
Herikerbergweg 238, Luna ArenA, 1101 CM Amsterdam, Netherlands
P.O.Box 23393 1100 DW Amsterdam, Netherlands
Tel : [phone]
http://www.mhiaeservices.com/
RLF012A216B
SRK20ZSX-WF
SRK25ZSX-WF
SRK35ZSX-WF
SRK50ZSX-WF
SRK60ZSX-WF
SRK20ZSX-WFB
SRK25ZSX-WFB
SRK35ZSX-WFB
SRK50ZSX-WFB
SRK60ZSX-WFB
SRK20ZSX-WFT
SRK25ZSX-WFT
SRK35ZSX-WFT
SRK50ZSX-WFT
SRK60ZSX-WFT
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
РУКОВОДСТВО ПО ЭКСПЛУАТАЦИИ
КОНДИЦИОНЕР ВОЗДУХА
ENGLISH
DEUTSCH
ITALIANO
ESPAN
˜OL
NEDERLANDS
PORTUGUÊS
РУССКИЙ
FRANÇAIS
ΕΛΛΗΝΙΚΑ
KULLANIM KILAVUZU
ΟΔΗΓΙΕΣ ΧΡΗΣΗΣ
ΚΛΙΜΑΤΙΣΤΙΚΟ
TÜRKÇE
USER’S MANUAL
AIR-CONDITIONER
202203
RLF012A216BCover.indd1RLF012A216BCover.indd1 2022/02/2814:12:012022/02/2814:12:01

UK DECLARATION OF CONFORMITY
MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD. 2-3, Marunouchi 3-chome, Chiyoda-ku, Tokyo, 100-8332, Japan
declare under our sole responsibility that the apparatus referred to in this declaration conforms with the following directives.
Description of apparatus: Split Type Air Conditioner
Model name:
Relevant GB Directives :
Supply of Machinery Regulations S.I. 2008/1597
Applied Standards / Regulations :
Conformity model list
Description of apparatus: Split Type Air Conditioner
Model name:
[Indoor Unit] [Outdoor Unit]
Authorised Representative in the GB :
MITSUBISHI HEAVY INDUSTRIES AIR-CONDITIONING EUROPE, LTD.
5 The Square, Stockley Park, Uxbridge, Middlesex, UB11 1ET, United Kingdom
EU DECLARATION OF CONFORMITY
MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
2-3, Marunouchi 3-chome, Chiyoda-ku, Tokyo, 100-8332, Japan
declare under our sole responsibility that the apparatus referred to in this declaration conforms with the following directives.
Relevant EU Directives :
Machinery 2006/42/EC
Applied Standards / Regulations :
EN 60335-1 EN 60335-2-40
Conformity model list
Authorised Representative in the EU :
MHIAE SERVICES B.V. Herikerbergweg 238, Luna ArenA, 1101 CM Amsterdam, Netherlands P.O.Box 23393 1100 DW Amsterdam, Netherlands
[Indoor Unit] [Outdoor Unit]
Category Model
SRC Series SRC20ZSX-W
SRC25ZSX-W SRC35ZSX-W SRC50ZSX-W SRC60ZSX-W SRC20ZSX-WA SRC25ZSX-WA
SRC35ZSX-WA
Category Model
SRK Series SRK20ZSX-WF
SRK25ZSX-WF SRK35ZSX-WF SRK50ZSX-WF SRK60ZSX-WF SRK20ZSX-WFB SRK35ZSX-WFB SRK25ZSX-WFB SRK50ZSX-WFB
SRK20ZSX-WFT SRK60ZSX-WFB SRK25ZSX-WFT SRK50ZSX-WFT SRK35ZSX-WFT SRK60ZSX-WFT
Category Model
SRC Series SRC20ZSX-W
SRC25ZSX-W SRC35ZSX-W SRC50ZSX-W SRC60ZSX-W SRC20ZSX-WA SRC25ZSX-WA
SRC35ZSX-WA
Category Model
SRK Series SRK20ZSX-WF
SRK25ZSX-WF SRK35ZSX-WF SRK50ZSX-WF SRK60ZSX-WF SRK20ZSX-WFB SRK35ZSX-WFB SRK25ZSX-WFB SRK50ZSX-WFB
SRK20ZSX-WFT SRK60ZSX-WFB SRK25ZSX-WFT SRK50ZSX-WFT SRK35ZSX-WFT SRK60ZSX-WFT
EN 60335-1 EN 60335-2-40
RLF012A216BCover.indd2RLF012A216BCover.indd2 2022/02/2814:12:012022/02/2814:12:01

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 treat-
ment facility for re-use, recycling and recovery and not be disposed of in the munici-
pal 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 house-
hold 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.
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 .........................................14
Current time setting .....................................15
AUTO mode operation..................................15
Temperature adjustment during AUTO mode ...16
FAN SPEED .................................................16
COOL/HEAT/DRY/FAN mode operation.......17
Air-conditioner operation temperature range ....17
Characteristics of HEAT mode operation......17
Airflow direction adjustment..........................18
3D AUTO operation ......................................18
SLEEP TIMER operation ..............................19
OFF TIMER operation ..................................19
ON TIMER operation ....................................20
The emission sound pressure level from each Indoor and Outdoor unit is under 70 dB(A).
SLEEP TIMER + ON TIMER operation ........20
ON TIMER + OFF TIMER operation ............21
ALLERGEN CLEAR operation .....................21
WEEKLY TIMER operation ..........................22
HIGH POWER/ECO operation .....................26
NIGHT SETBACK operation.........................27
SILENT operation .........................................27
MENU function
Wireless LAN connection setting ...............28
Display brightness adjustment...................28
AUTO OFF operation .................................29
SELF CLEAN operation.............................30
Fan control in heating thermo - OFF..........31
PRESET operation ....................................32
Wireless LAN communication setting ........33
Initialization of wireless LAN interface .......33
Maintenance.................................................34
Proper installation.........................................37
Troubleshooting ...........................................37
Notice ...........................................................37
Contact your dealer ......................................39
Auto restart function .....................................39
About the multiple air-conditioners ...............39
Self diagnosis function..................................40
contents
RLF012A216EN.indd1RLF012A216EN.indd1 2022/01/2117:19:372022/01/2117:19:37

EN-2
Safety precautions
• Before starting to use the system, please read these “Safety precautions” carefully to ensure
proper operation of the system.
• 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.
• This unit is designed for 2 types refrigerants (R32 or R410A). See a label on the outdoor unit to
check refrigerant information.
• 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 only for R32.
This equipment uses flammable refrigerants. If the refrigerant is leaked,
together with an external ignition source, there is a possibility of ignition.
WARNING
• Strict compliance of the domestic laws must
be observed when disposing the appliance.
• Do not use means to accelerate the
defrosting process or to clean, other than
those recommended by the manufacturer.
• The appliance shall be stored in a room
without continuously operating ignition
sources (for example: open flames, an
operating gas appliance or an operating
electric heater).
• Do not pierce or burn.
• Be aware that refrigerants may not contain an
odour.
• The appliance shall be stored in a well-
ventilated area where the room size
corresponds to the room area as specified for
operation.
• The staff in servicing operations must hold
the national qualification or other relevant
qualifications.
• The indoor unit shall be stored in a room that
has a minimum area of 4.0m2. 
*
This value is for split system. In the case of
multi system, see the installation sheet of
outdoor unit.
RLF012A216BEN.indd2RLF012A216BEN.indd2 2022/03/1610:24:162022/03/1610:24:16

EN-3
❚Safety precautions
❚INSTALLATION PRECAUTIONS
WARNING
• The system is for domestic and residential use.
If used in severe environments, such as an engineering workplace, the equipment may
function poorly.
• 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
• Do not install it where flammable gas may leak.
Gas leaks may cause fire.
• Make sure that an earth leakage
breaker is installed.
If you do not install an earth leakage
breaker, you may get an electric shock.
• 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.
• 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.
−Do not vent R410A into the atmosphere: R410A is a fluorinated greenhouse gas with a Global
Warming Potential (GWP) = 2088.
Refer to a label on outdoor unit for the weight of fluorinated greenhouse gas and CO2equivalent.
RLF012A216EN.indd3RLF012A216EN.indd3 2022/01/2117:19:372022/01/2117:19:37

EN-4
❚Safety precautions
❚OPERATION PRECAUTIONS
WARNING
• Children shall not play with the
air-conditioner.
• Do not expose yourself to the cooling
air for a long period.
This could affect your physical condition
and cause health problems.
• Cleaning and user maintenance shall
not be made by children without
supervision.
• Do not insert anything into the air
outlet.
This may cause injury, as the internal fan
rotates at high speed.
• 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.
• Store the remote control out of reach of children.
Failure to observe this may result in the batteries being swallowed or other accidents.
CAUTION
• 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.
• Do not handle the switches with wet
hands.
This may cause an electric shock.
• Do not swing from the indoor unit.
If the indoor unit falls down,you may get
injured.
• 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.
• Do not expose any combustion
appliance directly to the air stream of
the air-conditioner.
The combustion appliance may
malfunction.
• 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.
• 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.
• 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.
• Do not install the air-conditioner where
the airflow direction is aimed directly at
plants or animals.
This will damage their health.
• 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.
• 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.
RLF012A216EN.indd4RLF012A216EN.indd4 2022/01/2117:19:372022/01/2117:19:37

EN-5
❚Safety precautions
CAUTION
• Do not touch the aluminum fins on the
heat exchanger.
It may result in injury.
• 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.
• Do not operate the system without the
air filter.
It can cause malfunction of the system
due to clogging of the heat exchanger.
• 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.
• 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.
• 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.
• 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.
• 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.
• When you clean air-conditioner, stop
the unit and turn off the power source.
Never open the panel while the internal
fan is rotating.
• 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.
• 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.
• Stop the unit and turn off the power if
you hear thunder or there is a danger
of lightning.
It may damage the unit.
• 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.
RLF012A216EN.indd5RLF012A216EN.indd5 2022/01/2117:19:372022/01/2117:19:37

EN-6
❚Safety precautions
❚WIRELESS LAN PRECAUTIONS
WARNING
• 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.
• 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.
• 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
• 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.
• 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.
• 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.
• Check the operational status periodically.
Sudden indoor/outdoor temperature changes may disturb your health.
RLF012A216EN.indd6RLF012A216EN.indd6 2022/01/2117:19:372022/01/2117:19:37

EN-7
❚Safety precautions
❚PRECAUTIONS FOR RELOCATION OR REPAIRS
WARNING
• 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.
• Consult your dealer for repairs.
Wrong repairs could cause an electric
shock, fire, etc.
• 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.
• 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.
• 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.
•Set a suitable room temperature.
Excessively high or low temperatures are not good for your health and waste of electricity.
•Clean the filters frequently.
Clogged filters may block the airflow and cause less efficient operation. Page 34
•Avoid direct sunlight and draught.
Cut out direct sunlight by drawing the curtains or blinds when cooling. Keep windows and doors shut, except when ventilating.
•Adjust the airflow direction properly.
Adjust the up/down and left/right airflow to ensure a steady room temperature.
•Operate the unit only when needed.
Use the timer properly to operate the unit only when needed.
•Keep heat source away when cooling.
Keep heat sources out of the room as much as possible.
RLF012A216EN.indd7RLF012A216EN.indd7 2022/01/2117:19:372022/01/2117:19:37

EN-8
Name of each part and its function
Air inlet panel Air inlet
Air filters
Air outlet
Air outlet
Room temperature
sensor
Heat exchanger
(Aluminum fin)
Heat exchanger
(Aluminum fin)
Fan
•Inside of
the unit
Louvers
(Vertical blades)
•Left / right airflow
direction adjustment
Flaps
(Horizontal blades)
•Up / down airflow
direction adjustment
Page 34, 35
Page 34
OUTDOOR UNIT
INDOOR UNIT Air-cleaning filter
Page 36
•Allergen clear filter
(Light orange)
•Photocatalytic washable
deodorizing filter (Orange)
Air inlet
(back and side)
Fan
•Inside 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
Motion
sensor
Model name label
(SRC50-60ZSX-W)
DO NOT INSERT ANYTHING
INTO THE AIR OUTLET
WARNING
This equipment
uses flammable
refrigerant.
Page 2
Model name and refrigerant type
(SRC20-35ZSX-W)
QR code
• You can check
the SSID and
KEY (Password).
This equipment uses
flammable refrigerant.
Page 2 (only R32 models)
RLF012A216BEN.indd8RLF012A216BEN.indd8 2022/03/1113:24:482022/03/1113:24:48

EN-9
Unit display section
Name of each part and its function
•Buzzer 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 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.
NOTE
Preset temperature
Airflow setting
PipPip Pip Pip Pip Pip Pip Pip Pip Pip Pip Pip
Remote control Remote control
holder
Allergen clear filter
(Light orange)
Photocatalytic washable
deodorizing filter (Orange)
Battery × 2
(R03 (AAA, Micro))
Wood screw × 2
(for remote control holder mounting)
TIMER light (yellow)
Illuminates during TIMER operation.
RUN light (green/blue)
Accessories
•Illuminates during operation.
green : except ECO operation
blue : ECO operation
•Blinks slowly when SELF CLEAN operation
(3 seconds ON, 1 second OFF).
•Blinks when airflow is stopped to
prevent blowing out of cold air in
heating operation. (1.5 seconds ON,
0.5 seconds OFF)
Page 30
Page 37
•Do not touch the air inlet panel and flap while it is operating.
- The air inlet panel opens up while the system is operating.
Do not install the unit in a fashion in which the air inlet panel cannot open or place
objects near the indoor unit.
- The air inlet panel and the flap close when the operation stops.
Your fingers may get caught when the panel or the flap closes.
•Do not apply excessive force to the air inlet panel and flap. Doing so may cause
these parts to malfunction.
CAUTION
Page 19-25
•Blinks slowly when AUTO OFF
operation during stand by (3.5
seconds ON, 0.5 second OFF).
Page 29
This button can be used for turning on/off
the unit when a remote control is not available.
Page 10
Remote control signal receiver
Unit ON/OFF button
•RUN lights blink quickly during invalid operation mode.
Page 39
RLF012A216EN.indd9RLF012A216EN.indd9 2022/01/2117:19:382022/01/2117:19:38

EN-10
Remote control
Setting the batteries
The following cases show exhausted batteries. Replace old batteries with new ones.
•Receiving beep is not emitted when a signal is transmitted.
•Display fades away.
NOTE
•Do not use old and new batteries together.
•Remove the batteries when the remote control is not used for a long period.
•The 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.
•The 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.
Pull out the cover.
Insert new batteries.
R03 (AAA, Micro) x 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
•Are the batteries running down?
“Setting the batteries” above.
Replace the batteries with new ones and retry the
operation.
Operation failure with the remote control
•If the operation fails, operate the unit with temporary run opera-
tion function.
“Temporary run operation” below.
Strictly prohibited
•Do not drop the remote control.
Handle with care.
• Do not take remote control near
high temperature places, such as an
electric heating carpet or a stove.
•Do not place heavy objects on the
remote control, or step on it.
•Do not put any obstructing
obstacles between the remote
control and the unit.
•Do not spill any liquid on the
remote control.
•Do not leave the remote control
exposed to direct sunlight or other
strong lighting.
Temporary run operation
•The 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
• AIR FLOW : AUTO
•Operation starts by pressing the unit ON/OFF button; it stops if you press
the button again.
•Do 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
Unit ON/OFF button
Press the ACL switch with
the tip of a ballpoint pen.
•Set the current time.
Page 15 Current time
setting Step 2
Contact your dealer to have the remote
control checked.
RLF012A216EN.indd10RLF012A216EN.indd10 2022/01/2117:19:382022/01/2117:19:38

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 emit-
ted 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 SET 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 SET button for 3 seconds or more.
•While 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.
•Child lock will not function during ALLERGEN CLEAR operation.
NOTE
Reception
peep
RLF012A216EN.indd11RLF012A216EN.indd11 2022/01/2117:19:382022/01/2117:19:38

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.
(Center Installation)
2Press the AIR FLOW U/D (UP/DOWN) button and
the AIR FLOW L/R (LEFT/RIGHT) button together for
5 seconds or more.
The airflow range setting display illuminates.
3Setting the airflow range.
Press the AIR FLOW L/R (LEFT/RIGHT) button and adjust to the desired
location.
Each time the AIR FLOW L/R (LEFT/RIGHT) button is pressed, the display is
switched in the order of:
(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)
•Once 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.
•During the operation, an airflow range setting cannot be set.
•When 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
RLF012A216EN.indd12RLF012A216EN.indd12 2022/01/2117:19:382022/01/2117:19:38

EN-13
■According to the installation location of the indoor unit, turn the sensor to the right or left until it clicks into position.
(The orientation of the application range can be changed laterally by approximately 20 degrees.)
Left End Installation Center Installation Right End Installation
Air-conditioner
installation
location
Motion sensor
orientation
Turn to the right Center Turn to the left
■The motion sensor detects the movement of people (heat-generating bodies) to determine whether there is someone in the room and
how much they move.
The application range is as follows. Adjust the angle of the motion sensor according to the installation location of the indoor unit.
above
•Horizontal angle 100°(Top view)
•Depending on the room conditions and/or the installation location, the motion sensor may not be able to detect people correctly.
The motion sensor may not be able to detect people in the following cases:
−When a person(s) is immediately under or beside the air-conditioner
−When the room temperature is 30 °C or higher
−When there is any obstacle such as furniture or a glass window between the air-conditioner and the person(s)
−When the person(s) is covering most of their skin with extremely heavy clothes or they are exposing their backs to the air-
conditioner
- When the person(s) makes extremely little movement, which may occur while, for example, they are sleeping
•In the following cases, the motion sensor may judge that there is someone in the room even though there is actually not:
−When there is an animal such as a dog or cat in the room
−When plant leaves are swaying in the wind
−When a heating appliance (e.g., oscillating heater) or other heat-generating object is moving
−When there is a significant temperature change in walls or floors of the room at the time the operation starts
50° 50°
7m
Motion sensor setting
About the motion sensor
Open the air inlet panel.
page 34
Change the orientation of the motion
sensor.
Adjust the orientation of the motion sensor by pressing
the end of the sensor.
Close the air inlet panel.
page 34
1
2
3
RLF012A216EN.indd13RLF012A216EN.indd13 2022/01/2117:19:382022/01/2117:19:38

EN-14
OPERATION MODE select button
Each time the button is pressed, the
mode changes.
The above illustration shows all controls, but in practice
only the relevant parts are shown.
ALLERGEN CLEAR button
This button selects ALLERGEN CLEAR
operation.
ON/OFF (luminous) button
Press to start operation, press again
to stop.
TEMPERATURE button
This button sets the room temperature.
AIR FLOW (UP/DOWN) button
This button changes the airflow (up/
down) direction.
TIME SET UP switch
This switch is used for setting the time.
SLEEP button
This button selects SLEEP operation.
MENU switch
This switch selects the MENU function.
ON TIMER button
This button selects ON TIMER operation.
TIMER button
This button is used for setting the current
time and timer function.
ACL switch
This switch resets the program to default
state.
PROGRAM button
This button sets WEEKLY TIMER.
Operation and display section for remote control
HI/ECO button
This button changes the HIGH POWER/
ECO operation.
AIR FLOW (LEFT/RIGHT) button
This button changes the airflow (left/
right) direction.
SILENT button
This button sets the SILENT operation.
OFF TIMER button
This button selects OFF TIMER
operation.
WEEKLY button
This button switches the WEEKLY
TIMER to ON/OFF.
FAN SPEED button
Each time the button is pressed, the fan
speed changes.
3D AUTO button
This button sets 3D AUTO operation.
NIGHT SETBACK button
This button sets NIGHT SETBACK
operation.
SET/Child lock button
Use this button to set the timer and
Child lock.
CANCEL button
This button cancels the ON timer, OFF
timer, and SLEEP operation.
Transmission section
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, day of the week,
and present OPERATING MODE are
displayed while the air-conditioner is
turned off.
[View with the cover opened]
Page 15, 17
Page 26
Page 18
Page 27
Page 21
Page 20
Page 19
Page 22
Page 28
Page 19
Page 16
Page 18
Page 18
Page 27
Page 11
Page 22
Page 10, 15
Page 15
Display in OFF status
RLF012A216EN.indd14RLF012A216EN.indd14 2022/01/2117:19:392022/01/2117:19:39

EN-15
AUTO mode operation
■Automatically selects the operation mode (COOL, HEAT) depending on the room temperature when switched on.
•If you do not want the AUTO mode program, change
to COOL, HEAT or FAN instead of AUTO.
Page 17
•Airflow direction adjustment procedure.
Page 18
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
•In case air is not blowing out
during the operation.
Page 37
Current time setting
■When inserting the batteries, the current time is automatically set to time setting mode. Mon and 13:00 are displayed as the current time.
Set a correct day of the week and time.
NOTE
2
•The timer operation works based on the time clock, so set it
correctly.
•The remote control data will be reset when the present time is
set.
1
3
4
5
•When the battery of the remote control is replaced or the ACL
switch is pressed, the remote control will be set to the initial
state. Since the WEEKLY TIMER program is not set in the initial
state, set the program according to the setting procedure.
Example: Set to Sat 10:30.
Press the TIME SET UP switch.
Press with the tip of a ballpoint pen, etc.
The day of the week display blinks, enabling the setting of a day of the week.
Press the “ or (TIMER)” button.
(Set to Sat)
Press the SET button.
The day of the week display changes from blinking to steady lighting,
completing the setting of a day of the week, and the time display blinks.
Make sure to press the button within 60 seconds from the last operation in
step 2, otherwise the day of the week will not be set.
Press the “ or (TIMER)” button.
(Set to 10:30)
Press the SET 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 4, otherwise the time will not be set.
NOTE
RLF012A216EN.indd15RLF012A216EN.indd15 2022/01/2117:19:392022/01/2117:19:39

EN-16
Temperature adjustment during AUTO mode
■Default preset temperature during AUTO 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“ or (TEMP)” button.
■Each time the button is pressed, the switch over occurs in the following order
18 →19 →............ 23 →24 →25 ......... →30.
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 →29 →............ 25 →24 →23 ......... →18.
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.
Each time the button is pressed, the fan speed changes.
1
•When FAN SPEED is changed from Hi to Lo or ULo, the sound of
refrigerant may be heard.
•When COOL mode is used if outside temperatures are low, the FAN
SPEED may change automatically to protect the air-conditioner.
NOTE
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
AUTO HiMeLoULo
RLF012A216EN.indd16RLF012A216EN.indd16 2022/01/2117:19:392022/01/2117:19:39

EN-17
COOL/HEAT/DRY/FAN mode operation
Airflow direction adjustment procedure. Page 18
4
3
To stop: Press the ON/OFF button.
•In case air is not blown out, when starting the heating
operation.
•The 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
•The 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.
•It may take some time to supply hot air after turning on the air-conditioner.
•If 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.
•Both indoor and outdoor fans stop and the RUN light blinks slowly (1.5 seconds ON, 0.5 seconds OFF) during defrosting.
•The outdoor unit may release some steam during defrosting. This is to help the defrosting process and is not a defect.
•The 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 37
COOL HEAT DRY FAN
26 °C - 28 °C 22 °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 button.
Press or button for the preferred temperature.
Recommendation
COOL mode operation HEAT mode operation
Outside temperature Approximately -15 to 46 °C Approximately -20 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.
RLF012A216EN.indd17RLF012A216EN.indd17 2022/01/2117:19:392022/01/2117:19:39

EN-18
Airflow direction adjustment
■ Up/down direction can be adjusted with the AIR FLOW U/D (UP/DOWN) button on the remote control. Every time you press this button,
the mode changes as follows:
Change on AIR FLOW(UP/DOWN) mode.
■Left/right direction can be adjusted with the AIR FLOW L/R(LEFT/RIGHT) button on the remote control. Every time you press this
button, the mode changes as follows:
Change on AIR FLOW(LEFT/RIGHT) mode.
Memory flap (Flap or louver stopped)
When you press the AIR FLOW (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
•Do not expose directly to airflow from the air-conditioner for a long time.
CAUTION
•When 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.
•Do 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
•Recommended angle of the flap when
stopping
•When 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.
•The 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.
•The 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.
(Swing)
(Flap stopped)
(Louver stopped)
(Swing)
NOTE FOR HEATING OPERATION
•The actual position of the flap and louver may differ from the display shown.
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
•3D AUTO operation is canceled when you switch the operation mode.
•If 3D AUTO operation is canceled then the airflow direction changes to that
used before 3D AUTO was set.
•3D AUTO operation can be set in AUTO, COOL, or HEAT operation mode
only.
NOTE
How to cancel
Press the 3D AUTO button to turn off the 3D AUTO display.
RLF012A216EN.indd18RLF012A216EN.indd18 2022/01/2117:19:392022/01/2117:19:39