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USER’S MANUAL
ORIGINAL INSTRUCTIONS
AIR-CONDITIONER
SRR25ZM-W
SRR35ZM-W
SRR50ZS-W
SRR60ZS-W
USER’S MANUAL
AIR-CONDITIONER
MANUEL DE L’UTILISATEUR
CLIMATISEUR
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
ΟΔΗΓΙΕΣ ΧΡΗΣΗΣ
ΚΛΙΜΑΤΙΣΤΙΚΟ
ENGLISH
FRANÇAIS
DEUTSCH
ITALIANO
ESPAN˜OL
NEDERLANDS
PORTUGUÊS
ΕΛΛΗΝΙΚΑ
РУКОВОДСТВО ПО ЭКСПЛУАТАЦИИ
КОНДИЦИОНЕР ВОЗДУХА
KULLANIM KILAVUZU
RJJ012A005
РУССКИЙ
TÜRKÇE
201901
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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.
Your Air Conditioning product may be 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-conditioners
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 in the batteries attached to your Air Conditioning
product 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).
ENGLISH
Contents
Safety precautions ..........................................2
Name of each part and its function .................7
Remote control handling.................................9
Operation failure with the remote control........9
Temporary run operation ................................9
Installing two air-conditioners in the same room
Child Lock .....................................................10
Operation and display section for remote control
Current time setting .....................................12
AUTO mode operation ..................................12
Temperature adjustment during AUTO .........13
FAN SPEED .................................................13
Airfl ow direction adjustment..........................13
COOL/HEAT/DRY/FAN mode operation ......14
Air-conditioner operable temperature setting
Characteristics of HEAT mode operation .....14
SLEEP TIMER operation .............................. 15
OFF-TIMER operation ..................................15
...10
.... 11
...14
ON-TIMER operation ....................................16
SLEEP TIMER + ON-TIMER operation ........16
ON-TIMER + OFF-TIMER operation ............17
WEEKLY TIMER operation ........................... 18
HIGH POWER/ECONOMY operation ..........22
NIGHT SETBACK operation .........................23
SILENT operation .........................................23
SELF CLEAN operation................................24
Auto restart function .....................................24
Tips for effective operation ...........................24
Maintenance .................................................25
Proper installation .........................................26
Troubleshooting ............................................26
Notice ...........................................................27
Contact your dealer ......................................28
About the Multiple Air-conditioner .................28
Self diagnosis function..................................29
EN-1
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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
CAUTION
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
The user’s manual should be read
carefully.
There is information included
in the user’s manual and/or
installation manual.
Indicates a potentially hazardous situation which, if not avoided, can
result in serious consequences such as death or severe injury.
Indicates a potentially hazardous situation which, if not avoided, can
result in personal injury or property damage.
Observe instructions
with great care
A service personnel should be
handing this equipment with
reference to the installation
manual.
Provide proper
earthing
❚ 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 wellventilated 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 4.0m
This value is for split system. In the case of
*
multi system, see the installation sheet of
outdoor unit.
EN-2
2
.*
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❚ 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 CO2 equivalent.
EN-3
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❚ Safety precautions
❚ OPERATION PRECAUTIONS
•
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.
•
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.
•
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.
WARNING
•
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.
CAUTION
•
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.
EN-4
Page 7
❚ Safety precautions
•
Do not touch the aluminum fins on the
heat exchanger.
It may result in injury.
•
Do not place household electrical
appliances or household items underneath 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
and to locking of drain pump.
•
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.
•
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.
CAUTION
•
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.
•
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.
EN-5
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❚ 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.
EN-6
Page 9
Name of each part and its function
INDOOR UNIT
Air blows out of here.
Removes dust or dirt from the inlet air.
Refrigerant piping connection
and electric wire
Unit display section
(Remote control signal receiver)
Drains water from the indoor unit.
Wireless remote control
Air inlet
Air outlet
Air fi lter
Page 25
Drain hose
Page 11
Accessories
Wireless remote control Wireless remote
control holder
OUTDOOR UNIT
Wood screw × 2
(for remote control holder mounting)
Battery × 2
(R03 (AAA, Micro))
Air inlet
(On side & rear surface)
Air outlet
Outdoor unit fan
EN-7
Heat exchanger
Page 10
Name of each part and its function
Unit display section
RUN (HOT KEEP) light (green)
• Illuminates during operation.
Blinks when airfl ow stops due to the ‘HOT
•
and ‘CLEAN operation’.
KEEP’
1.5 sec.
HOT KEEP
CLEAN operation
Operation mode
invalid
• Buzzer sound for remote control
ON
OFF
0.5 sec.
3 sec.
ON
OFF
1 sec.
Page 24
0.5 sec.
ON
OFF
0.5 sec.
Page 28
NOTE
When preset temperature 24°C, automatic operation and automatic airfl ow are selected, the buzzer sound (PIPI) is produced.
When turning off the air-conditioner by pressing ON/OFF button (except CLEAN mode), the buzzer sound (PI) is produced.
This function is useful for operating the air-conditioner in the darkness.
Air fl ow setting
Preset temperature
Remote control signal receiver
Unit ON/OFF button
This button can be used for turning on/
off the unit when a remote control is not
available.
TIMER light (yellow)
Illuminates during TIMER operation.
HI POWER light (green)
Illuminates during HIGH POWER operation.
ECONO light (orange)
Illuminates during ECONOMY operation.
Page 9
Representative installation examples
Ceiling concealed (side fl ow) type
Ceiling concealed (downward fl ow) type
EN-8
Remote control signal receiver
Air outlet (Local arrangements part)
Air inlet grill
(Local arrangements part)
Air outlet (Local arrangements part)
Remote control signal receiver
Air inlet grill
(Local arrangements part)
Page 11
Remote control handling
Replacing 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.
Pull out the cover and take
1
out old batteries.
Insert new batteries.
2
R03 (AAA, Micro) x2
Pay attention to
the
and
marks
■ When the display shows any abnormal condition, Press the ACL switch with the
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
unspecifi ed 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 manufacturering time to the unit. However, the battery may
still be in working order after expiry of its nominal life.
tip of a ballpoint pen.
Using the remote control holder
Close the cover.
3
Press the ACL switch with
4
the tip of a ballpoint pen.
Page 12
The remote control can be attached to a wall or pillar
by using a 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.
Warning note for remote control handling
Strictly prohibited
• Do not go near high temperature
places, such as an electric carpet
or a stove.
• Do not put any obstructing
obstacles between the remote
control and the unit display
section.
• Do not leave the remote control
exposed to direct sunlight or other
strong lighting.
• Do not spill any liquid on the
remote control.
• Do not drop the remote control.
Handle with care.
• Do not place heavy objects on the
remote control, or step on it.
Operation failure with the remote control
• Are the batteries running down?
“Replacing the batteries” above.
Replace the batteries with new ones and retry the operation.
• If the operation fails, operate the unit
with temporary operation function.
Contact your dealer to have the remote
control checked.
Below
Temporary run operation
• The unit ON/OFF button on the unit display section operates ON/OFF temporarily when the remote control is not used.
Operation program
• OPERATION MODE : AUTO
• FAN SPEED : AUTO
• Operation starts by pressing the unit ON/OFF button; it stops if you press
the button again.
NOTE
• Do not hold the Unit ON/OFF button down for more than 5 seconds.
(Holding it down longer than 5 seconds sets the automatic cooling used during servicing or when relocating the air-conditioner.)
Unit ON/OFF button
EN-9
Page 12
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.
Setting the remote control
Pull out the cover and take out bat-
1
teries.
Disconnect the switching line next to
2
the battery with wire cutters.
Disconnect
Insert batteries.
3
Close the cover.
Setting an indoor unit
Turn off the power source, and turn it on after 1 minute.
1
Point the remote control that was set according to the
2
procedure described on the left side at the unit display
section and send a signal by pressing the ACL switch
on the remote control.
Since the signal is sent in
about 6 seconds after the
ACL switch is pressed,
point the remote control at
the unit display section for
some time.
Check that the reception buzzer sound “pip” is emitted
3
from the indoor unit.
At completion of the setting, the indoor unit emits a buzzer sound
“pip”. (If no reception tone is emitted, start the setting from the beginning again.)
Reception
pip
Child Lock
■ This function locks the remote control operation to prevent an operation error.
1
Releasing procedure
Turn off the light by pressing the SET button for 3 seconds or longer.
Press the SET button for 3 seconds or longer.
is displayed. While Child Lock is set, only the ON/OFF button can be oper-
ated.
NOTE
• While Child Lock is set, the settings of temperature and fan speed cannot
be changed. To change the settings, reset Child Lock.
EN-10
Page 13
Operation and display section for remote control
OPERATION MODE select button
Each time the button is pressed, the
mode changes.
Page 12,14
TEMPERATURE button
This button sets the room temperature.
HI/ECO button
This button changes the HIGH POWER/
ECONOMY operation.
Page 22
SILENT button
This buttion changes the SILENT
operation.
Page 23
ON TIMER button
This button selects ON TIMER operation.
Page 16
OFF TIMER button
This button selects OFF TIMER
operation.
Page 15
WEEKLY button
This button switches the WEEKLY
TIMER to ON/OFF.
Page 18
CLEAN switch
This switch selects the CLEAN
operation.
Page 24
SLEEP button
This button selects SLEEP operation.
Page 15
[View with the cover opened]
• The above illustration shows all controls, but in
practice only the relevant parts are shown.
Transmission section
ON/OFF (luminous) button
Press to start operation, press again
to stop.
FAN SPEED button
Each time the button is pressed, the fan
speed changes.
Page 13
AIR FLOW (UP/DOWN) button
This button changes the air fl ow (up/
down) direction.
This button is not used.
(Air fl ow direction adjustment can not be
performed.)
Page 13
NIGHT SETBACK button
This button sets NIGHT SETBACK
operation.
Page 23
SET/Child Lock button
Use this button to set the timer and
Child Lock.
Page 10
CANCEL button
This button cancels the ON timer, OFF
timer, and SLEEP operation.
TIMER button
This buttions is used for setting the
current time and timer function.
PROGRAM button
This button sets WEEKLY TIMER.
Page 18
ACL switch
Switch for resetting microcomputer.
Page 9
TIME SET UP switch
This switch is for setting the time.
Page 12
Display in OFF status
The current time, day of the week, and present OPERATING MODE are displayed while the air-conditioner is turned off.
Transmission procedure
When each button on the remote control is pressed with the remote control pointing towards the unit
display section, a signal is transmitted.
When the air-conditioner receives the signal correctly, it will beep.
EN-11
Reception
pip
Page 14
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 a time.
Example: Set to Sat 10:30.
1
2
3
4
5
NOTE
• The timer operation works based on the time clock, so please
set it correctly.
• The remote control data is reset when the present time is set.
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 is not 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 is not set.
• When the battery of the remote control is replaced or the ACL
switch is pressed, the remote control is 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.
AUTO mode operation
■
Automatically selects the operation mode (COOL, HEAT, DRY) depending on the room temperature when switched on.
Press the MODE button.
1
The mode changes whenever the button is pressed.
.
Set to
Press the ON/OFF button.
2
To stop: Press the ON/OFF button.
NOTE
• In case air is not blowing out
during the operation.
Page 27
EN-12
AUTO mode can be
operated by simply
pressing the ON/OFF
button.
• If you do not want the AUTO mode program, change to
COOL, HEAT, DRY or FAN instead of AUTO.
• Airfl ow direction adjustment procedure.
Page 14
Page 13
Page 15
Temperature adjustment during AUTO
■ Air temperature adjustment is possible even during automatic operation. There are 6 levels of adjustment possible with the button or
the button.During automatic operation, 24°C is preset both for heating and cooling.
1
When it is a little cold
Press the
■ Each time the button is pressed, the switch over occurs in the following order
When it is a little hot
Press the
■ Each time the button is pressed, the switch over occurs in the following order
When –6 is indicated, even if the button is pressed, the indicator does not change.
Press the“ or (TEMP)” button.
button.
–6 → –5 → ............ –1 → ±0 → +1 ............ +6.
When +6 is indicated, even if the button is pressed, the indicator does not change.
button.
+6 → +5 → ............ +1 → ±0 → –1 ............ –6.
Setting
temp.(°
-6 -5 -4 -3 -2 -1 +0 +1 +2 +3 +4 +5 +6
C
)
18 19 20 21 22 23 24 25 26 27 28 29 30
FAN SPEED
■ You can choose the fan speed of your air-conditioner without dry mode.
1
Press the FAN SPEED button.
Each time the button is pressed, the fan speed changes.
Remote Control display
AUTO HiMeLoULo
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
• When FAN SPEED is changed from Hi to Lo or ULo, the sound of
refrigerant fl owing may be heard.
Airfl ow direction adjustment
Adjusting up/down air fl ow direction
■ Air fl ow direction adjustment can not be performed, although a display will be
changed if “AIR FLOW” button is pushed.
EN-13
Page 16
COOL/HEAT/DRY/FAN mode operation
1
2
3
4
NOTE
• 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.
Page 27
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
Press the FAN SPEED button
Set the fan speed as preferred.
A fan speed cannot be set under Dry operation.
To stop: Press the ON/OFF button.
Air-conditioner operable temperature setting
■ Use within the following operational range. Operating outside of this range may result in the protection devices being activated,
preventing the unit from working.
Cooling operation Heating operation
Outside temperature
Inside temperature
Inside humidity
Approximately -15 to 46 °C Approximately -15 to 24 °C
Approximately 18 to 32 °C Approximately 10 to 30 °C
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.
Characteristics of HEAT mode operation
Mechanism and capacity of HEAT mode operation
■ Mechanism
• 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 effi cient
heating.
If this happens, the automatic defrost function is activated and during defrosting 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 sec. ON, 0.5 sec. OFF) during defrosting.
• The outdoor unit may give off 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.
EN-14
Page 17
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 17
1
■ If it is pressed while the unit is off
SLEEP TIMER operation starts with the previous operation settings, and the airconditioner 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:
No display
(canceled)
Example: You prefer it to stop after 7 hours.
Set to
The timer light (yellow) is on.
• The unit stops after the set time lapses.
Changing of set time
Set a new time by pressing SLEEP button.
How to cancel
Press the CANCEL button to turn off the SLEEP
display.
OFF-TIMER operation
NOTE
• Cannot be set at the same time with OFF-TIMER.
Press the SLEEP button.
... (Units of one hour)
■ The unit stops automatically when the set time comes.
With the air-conditioner turned off, start the operation from Step 1. With the air-conditioner running, start from Step 2.
Example: You prefer it to stop 22:30.
Press the ON/OFF button.
1
Press the OFF-TIMER button.
OFF-TIMER display is blinking.
Press the “ or (TIMER)” button.
Every time the button is pressed, the display is switched in the order of:
0:00 0:10 0:20
Every time the button is pressed, the display is switched in the order of:
0:00 23:50 23:40
Set at 22:30.
Press the SET button.
The display changes from blinking to steady lighting and the setting is
complete.
The timer light (yellow) is on.
NOTE
• The unit stops at the end of the set period of time.
• Make sure to press the button within 60 seconds from the last operation
in step 3, otherwise the setting is not completed.
• The current time is not displayed during OFF-TIMER operation.
• Different from SLEEP TIMER operation, automatic set temperature ad-
justment is not done during OFF-TIMER operation.
EN-15
...
...
23:00 22:50
1:00 1:10
(Units of ten minutes)
(Units of ten minutes)
Changing of set time
Set a new time by using the OFF-TIMER button.
How to cancel
Press the CANCEL button to turn off the timer
display.
2
3
4
Page 18
ON-TIMER operation
■
Operation starts 5 to 60 minutes before the set time so that the room temperature reaches the optimum temperature at the set time. Page 17
ON-TIMER operation can be set regardless of whether the air-conditioner is running or not.
Example: When the preferred room temperature is required at 8:00.
Press the ON-TIMER button.
1
2
ON-TIMER display is blinking.
Press the “ or (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)
Changing of set time
Set a new time by using the ON-TIMER button.
How to cancel
Press the CANCEL button to turn off the timer
display.
Every time the button is pressed, the display is switched in the order of:
0:00 23:50 23:40
Set at 8:00.
Press the SET button.
3
• Operation starts 5 to 60 minutes before the set time.
• The timer light (yellow) goes out at the set time.
• Make sure to press the button within 60 seconds from the last operation
• The current time is not displayed during ON-TIMER operation.
• If the ON/OFF button is pressed after setting the ON-TIMER, the setting
The display changes from blinking to steady lighting and the setting is
complete.
The timer light (yellow) is on.
The operation stops if it is set during operation.
NOTE
in step 2, otherwise the setting is not completed.
will be canceled.
...
23:00 22:50
(Units of ten minutes)
SLEEP TIMER + ON-TIMER operation
■ Combined timer operation of SLEEP TIMER and ON-TIMER.
Example: When it is required to stop after 3 hours and then start operation at 8:00, near the
set temperature.
1 SLEEP TIMER setting
Set by the procedures on page 15.
Set to
2 ON-TIMER operation setting
Set by the above procedure mentioned in ON-TIMER.
Set to
The setting of the lighting of the timer light (yellow) of this unit is complete.
• After the SLEEP TIMER set time has elapsed, the operation stops, and it starts from
5 to 60 minutes before the ON-TIMER’s set time.
• The timer light is turned off when ON-TIMER set time comes.
Changing of set time
Set a new time by using the SLEEP or ON-TIMER button.
How to cancel
Press the CANCEL button to turn off the timer display.
EN-16
Page 19
ON-TIMER + OFF-TIMER operation
■ The timer operations of the combination of ON and OFF-TIMER.
Example: Present time is 21:00. The air-conditioner running.
When it is prefered to stop at 22:30, and then start operation at 8:00, near the set
temperature.
1 OFF-TIMER operation setting
Set by the procedures on page 15. Set to
2 ON-TIMER operation setting
Set by the procedures on page 16. Set to
Timer light (yellow) on the unit display section will light when the setting is
completed.
■ The set time will be displayed on the remote control. The display will change
depending on the operational status.
NOTE
• Timer operation can be set only for next 24 hours.
• The air-conditioner stopping.
• The air-conditioner running.
Changing of set time
Set a new time by using the OFF-TIMER or ON-TIMER button.
How to cancel
Press the CANCEL or ON/OFF button to turn off the timer display.
First the air-conditioner starts running with ON-TIMER.
After the air-conditioner stops running with OFF-TIMER.
First the air-conditioner stops running with OFF-TIMER.
After the air-conditioner starts running with ON-TIMER.
Comfort Start-up
In ON-TIMER operation, the unit starts the operation a little earlier, so
that the room can approach optimum temperature at ON time. This is so
called “Comfort start-up”.
• Mechanism
The room temperature is
checked 60 minutes before
the ON time. Depending on
the temperature at that time,
the operation starts 5 to 60
minutes before the timer is at
ON.
• The function is available for
both COOL and HEAT operation mode (including AUTO). It
does not work for DRY mode.
In COOL operation
▼
(Stop) Operation starts
Set temperature
Check the room
temp. 60 mins.
before.
▼
(Operation)
Set time
SLEEP TIMER
When SLEEP TIMER is selected, the set temperature is automatically
adjusted after a while, ensuring that the room is not too cold during cooling or too warm during heating.
• During cooling : The preset temperature is lowered by 1°C at the start
of SLEEP operation (when the timer is set). After that, the temperature
goes up by 1°C every an hour to become 1°C higher than the present
temperature.
• During heating: The preset temperature is lowered by 1°C at the start
of SLEEP operation (when the timer is set). After that the temperature
becomes 3°C lower in an hour and 6°C lower in two hours than the
present temperature.
EN-17
Page 20
WEEKLY TIMER operation
■ Up to 4 programs with timer operation (ON-TIMER / OFF-TIMER) are available for each day of the week. Max 28 programs per week are
available. Once this has been set, the timer operation will be repeated at the same programs every week unless the WEEKLY TIMER is
canceled.
Sample (At cooling season)
: WEEKLY TIMER setting
: MANUAL setting
COOL 27°C
COOL 27°C
COOL 28°C
COOL 28°C
AUTO 27°C
COOL 26°C COOL 25°C
COOL 26°C COOL 27°C
WEEKLY TIMER ON/OFF setting
■ Switch the WEEKLY TIMER to ON/OFF by using the WEEKLY button.
Press the WEEKLY button.
1
The WEEKLY TIMER becomes effective.
Every time the WEEKLY button is pressed, the display is switched in the
order of:
COOL 28°C
COOL 28°C
COOL 28°C
COOL 28°C
No display
(WEEKLY TIMER on) (WEEKLY TIMER off)
NOTE
• The WEEKLY TIMER is switched to ON/OFF regardless of
whether the air-conditioner is running or not.
• The ON-TIMER operation of the WEEKLY TIMER is effective
regardless of whether the air-conditioner is running or not.
When the ON-TIMER setting time is reached, the remote
control operates according to the contents that are set. The
remote control display is also switched to the operation
contents that are set. The setting can be changed from the
remote control after ON-TIMER operation of the WEEKLY
TIMER.
The following contents can be set by the ON-TIMER.
Operation mode, fan speed, temperature, ECONOMY, NIGHT
SETBACK, SILENT.
Comfort start-up is not performed for WEEKLY TIMER ON-
TIMER operation.
EN-18
When the WEEKLY TIMER is set to ON, the timer light (yellow) of the unit
display section is on.
When the battery of the remote control is replaced or the ACL switch is
pressed, the remote control is 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.
• OFF-TIMER operation of the WEEKLY TIMER is effective only
when the air-conditioner is running. When the time set by the
OFF-TIMER is reached, the air-conditioner stops.
• When multiple program numbers are set for the current day
(day of the week), the operation is performed from the earliest
time that is set.
• When various timers (ON-TIMER, OFF-TIMER, and SLEEP
TIMER) are operating, the WEEKLY TIMER does not operate
even if the time set in the ON-TIMER or OFF-TIMER is
reached. The WEEKLY TIMER becomes effective after
various timers are terminated.
• The ON-TIMER or OFF-TIMER of the same time in the same
day of the week cannot be set.
• In case of the WEEKLY TIMER being not sent in the remote
control, the TIMER light is not on even if the WEEKLY button
is pressed and
is displayed on the remote control.
Page 21
Setting mode <Individual setting>
Set after setting the current day of the week and the time.
1
2
3
Press the PROGRAM button.
and current day of the week blink.
Press the “ or (TIMER)” button.
Select a day of the week to be reserved.
Every time the
the order of:
Mon Tue Wed
Every time the button is pressed, the display is switched in
the order of:
Mon Sun
Press the SET button.
The day of the week is determined and the program number
blinks.
button is pressed, the display is switched in
...
Display of all of the days of
Sun
the week
Display of all of the days of
the week
Sat
...
Tue
4
5
6
Press the “ or (TIMER)” button.
Select a program number.
Every time the button is pressed, the display is switched in the
order of:
P1 P2 P3 P4
Every time the
the order of:
P1 P4 P3 P2
Press the SET button.
When no set contents (ON-TIMER or OFF-TIMER) are
available, both the
When set contents (ON-TIMER or OFF-TIMER) are available,
either one of
Press the ON-TIMER or OFF-TIMER button.
ON-TIMER or OFF-TIMER is determined and time display blinks.
button is pressed, the display is switched in
and timers blink.
or is lit.
ON-TIMER is selected OFF-TIMER is selected
EN-19
Page 22
7
8
9
10
Press the “ or (TIMER)” button.
Set a time.
Every time the
order of:
0:00 0:10 0:20
Every time the button is pressed, the display is switched in
the order of:
0:00 23:50 23:40
When ON-TIMER is selected, go to Step 8.
When OFF-TIMER is selected, go to Step 9.
Set required operation contents.
When ON-TIMER is selected, operation mode and fan speed can be changed and the
ECONO, SILENT or NIGHT SETBACK operation can be set.
Press the SET button.
The time is determined and and blink.
Press the PROGRAM button or SET button.
When the PROGRAM button is pressed, the setting is sent to the air-conditioner.
Since it takes 3 seconds for transmission, point the remote control at the unit display section
during the period.
When the setting is received, a buzzer sound (pip, pip, pip) is emitted.
When the SET button is pressed, the setting continues from Step 2.
button is pressed, the display is switched in the
...
...
23:00 22:50
1:00 1:10
(Units of ten minutes)
(Units of ten minutes)
Setting mode <Collective setting>
■ Set the same operation contents to the same program number of all the days of the week. In Step 2 above, select “all of the days of the
week”. When the contents that were individually set exist in the same program number, the contents are overwritten.
NOTE
• If no operation is performed for 60 seconds in setting mode, the setting changes that have been made until then become invalid and
the setting mode terminates. Subsequently,
(This blinking can not be observed if setting mode gets terminated while setting only one program.)
• At the end of the setting mode, point the remote control at the unit display section and press the PROGRAM button. In this case,
check that the air-conditioner emits a reception buzzer sound three times (pip, pip, pip). If the buzzer sound is not emitted, set the
mode to the setting mode again by pressing the PROGRAM button and check that the buzzer sound is emitted.
and all the program numbers (P1, P2, P3 and P4) blink for 10 seconds.
EN-20
Page 23
How to cancel the setting <Individual setting>
1
2
3
4
5
6
Press the PROGRAM button.
and current day of the week blink.
Press the “ or (TIMER)” button.
Select a day of the week to be canceled.
Press the SET button.
The day of the week is determined and the program number blinks.
Press the “ or (TIMER)” button.
Select a program number to be canceled.
At cancelation operation, do not press the SET button. If the SET button is
pressed, the mode is shifted to the Set mode.
Press the CANCEL button.
The setting contents of the ON or OFF-TIMER are canceled and is
displayed on the time display section.
Press the PROGRAM button.
When the PROGRAM button is pressed, the setting is sent to the airconditioner.
When the setting is received, a buzzer sound (pip, pip, pip) is emitted.
The setting contents of each program are canceled. Perform the operation
indicated above for each program to be canceled.
How to cancel the setting <Collective setting>
■ When the same operation contents exist in the same program number of all the days of the week, collective erase is allowed. In Step 2
above, select “all of the days of the week”. The procedure from Step 3 is the same as that indicated above.
If the operation contents have been changed or erased by individual setting after the collective setting described in page 20, causing
setting content discrepancies among the days of the week, collective erase is not allowed.
Confi rm mode
The WEEKLY TIMER setting contents can be confi rmed.
Press the PROGRAM button for 3 seconds or more.
1
2
Releasing procedure
The Confi rm mode can be terminated by pressing the ON/OFF, CANCEL or SET
button.
blinks and the setting content lights.
Press the “ or (TIMER)” button.
Select a day of the week and a program number to be confi rmed.
Display starts from the current day of the week. For the program without set-
ting,
mode, a setting mode is set.
is displayed. When the PROGRAM button is pressed in Confi rm
Mon P1 P2 P3 P4
P1 P2 P3 P4Tue
Sun P1 P2 P3 P4
Display of all of the
days of the week
P1 P2 P3 P4
NOTE
• If no operation is performed for 60 seconds in Confi rm mode, the Confi rm
mode is terminated.
EN-21
Page 24
HIGH POWER/ECONOMY operation
1
Press the ON/OFF button.
Press the HI/ECO button.
2
HIGH POWER operation
Pressing the HI/ECO button intensifi es the operating power and initiates powerful cooling or heating operation for 15 minutes continu-
ously. The remote control
NOTE
• During the HIGH POWER operation, the room temperature
is not controlled. When it causes an excessive cooling or
heating, press the HI/ECO button again to cancel the HIGH
POWER operation.
• HIGH POWER operation is not available during the DRY and
ON-TIMER + OFF-TIMER operations.
• When HIGH POWER operation is set after setting ON-TIMER operation, HIGH POWER operation will start from the set
time.
• After HIGH POWER operation, the sound of refrigerant fl ow-
ing may be heard.
displays and the FAN SPEED display disappears.
• When the operating mode is AUTO, COOL or HEAT
Every time the HI/ECO button is pressed, the display is switched in the
order of:
No display
(
HIGH POWER
• When the operating mode is DRY or ON-TIMER + OFF-TIMER
Every time the HI/ECO button is pressed, the display is switched in the
order of:
(
ECONOMY
• When the following operations are set, HIGH POWER operation will be canceled.
1 When the HI/ECO button is pressed again.
(The operation mode will be changed to the ECONOMY
operation.)
2 When the operation mode is changed.
3 When it has been 15 min. since HIGH POWER operation
has started.
4 When the SILENT button is pressed.
5 When the NIGHT SETBACK button is pressed.
• Not operable while the air-conditioner is OFF.
)(
ECONOMY
) (Normal operation)
) (Normal operation)
No display
ECONOMY operation
Pressing the HI/ECO button initiates a soft operation with the power suppressed in order to avoid an excessive cooling or heating.
The unit operates 1.5°C higher than the setting temperature during cooling or 2.5°C lower than that during heating. The remote
control displays and the FAN SPEED display disappears.
NOTE
• It will go into ECONOMY operation at the next time the airconditioner runs in the following case.
hen the air-conditioner is stopped by ON/OFF button during
1 W
ECONOMY operation.
2 W
hen the air-conditioner is stopped in SLEEP or OFF
TIMER operation during ECONOMY operation.
3 When the operation is retrieved from CLEAN operation.
• When the following operations are set, ECONOMY operation
will be canceled.
1 When the HI/ECO button is pressed again.
2 When the operation mode is changed from DRY to FAN.
3 When the NIGHT SETBACK button is pressed.
• Not operable while the air-conditioner is OFF.
EN-22
Page 25
NIGHT SETBACK operation
■ During the cold season, the room temperature can be maintained at a comfortable level during the absence, at night, and while the room
is unattended. The air-conditioner maintains the constant temperature at about 10°C.
Press the NIGHT SETBACK button.
1
Releasing procedure
Press the NIGHT SETBACK button or MODE button to turn off the NIGHT
SETBACK display.
Every time the NIGHT SETBACK button is pressed, the display is switched
in the order of:
No display
(NIGHT SETBACK on) (NIGHT SETBACK off)
NOTE
• During NIGHT SETBACK operation, the air-conditioner maintains the set
temperature at about 10°C.
• During NIGHT SETBACK operation, temperature settings cannot be
made.
• Since the room temperature may change quite a bit, it is recommended
that this be used when no one is in the room.
• During NIGHT SETBACK operation, HIGH POWER and ECONOMY
operations cannot be set.
• When NIGHT SETBACK operation is canceled by pressing the NIGHT
SETBACK button, the operation mode is reset to the mode immediately
prior to the NIGHT SETBACK operation.
SILENT operation
■ When the SILENT operation is set, the unit operates more silently reducing noise from the outdoor unit.
With the air-conditioner turned off, start the operation from Step 1. With the air-conditioner running, start from Step 2.
Press the ON/OFF button.
1
2
Press the SILENT button.
• When the operating mode is AUTO, COOL, HEAT or NIGHT SETBACK
Every time the SILENT button is pressed, the display is switched in the
order of:
No display
(SILENT on) (SILENT off)
Releasing procedure
Press the SILENT button to turn off the SILENT display.
NOTE
• During SILENT operation, the maximum cooling and heating capacities
deteriorate.
• SILENT operation will not function during DRY and FAN operation.
• In case of following operations, the air-conditioner will resume SILENT
operation whenever it turns ON again.
1
When the air-conditioner is stopped by ON/OFF button during SILENT
operation.
2 When the air-conditioner is stopped in SLEEP or OFF-TIMER op-
3 When the operation is retrieved from CLEAN operation.
• Not operable while the air-conditioner is OFF.
• The noise level of the outdoor unit may not decrease depending on the
condition.
• In case of SCM multi system, SILENT control function is invalid.
eration during
SILENT
operation.
EN-23
Page 26
SELF CLEAN operation
■ CLEAN operation should be run after AUTO, COOL and DRY operation to remove the moisture from inside the indoor unit and control the
growth of mold and bacteria.
In order to active CLEAN operation, press the CLEAN
1
switch with the tip of a ballpoint pen.
Every time the CLEAN switch is pressed, the display is
switched in the order of:
(CLEAN on) (CLEAN off)
NOTE
• Two hours later, the air-conditioner stops CLEAN operation automatically.
To stop the air-conditioner immediately, press the ON/OFF button.
• CLEAN operation is not operated after HEAT, FAN, OFF-TIMER and
SLEEP operations have fi nished.
• The indoor unit fan runs for about two hours in CLEAN operation.
• The RUN light illuminates during CLEAN operation.
ON
OFF
• Pressing the SLEEP button or NIGHT SETBACK button during CLEAN
operation cancels the CLEAN operation and then the unit is set to
SLEEP or NIGHT SETBACK operation.
• This is not a function for removing mold, germs or grime that have already adhered to the unit.
No display
3 sec.
1 sec.
Auto restart function
■ What is auto restart function?
• Auto restart function records the operational status of the air-conditioner immediately prior to be switched off by a power cut, and then
automatically resumes operations after the power has been restored.
• The following settings will be canceled:
1 Timer settings
2 HIGH POWER operations
NOTE
• Auto restart function is set at on when the air-conditioner is shipped from the factory. Consult with your dealer if this function needs
to be switched off.
• When power failure occurs, the timer setting is canceled. Once power is resumed, set the timer again.
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.
According to handling directions
of local arrangements part,
adjust the airfl ow direction
properly.
Adjust the up/down and left/right airfl ow
to ensure a steady room temperature.
Air fl ow direction adjustment can not be
performed by unit.
Clean the fi lters frequently.
Clogged fi lters may block the airfl ow and
cause less effi cient operation.
Please request cleaning of the air fi lter
from special contractor.
Operate the unit only when
needed.
Use the timer properly to operate the
unit only when needed.
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.
Keep heat source away when
cooling.
Keep heat sources out of the room as
much as possible.
EN-24
Page 27
Maintenance
Before maintenance
Turn off the power source.
Do not spill any liquid.
• There's a danger of
electric shock.
• Wipe the unit with a
soft, dry cloth.
Do not touch the aluminum fi ns
on the heat exchanger.
Do not use the following articles:
• Hot water (40°C or more)
It may deform or discolour the unit.
• Petrol, paint thinner, benzine or
cleanser, etc.
They may deform or scratch the unit.
During the operational season
Cleaning the air fi lter
Please request cleaning of the air fi lter from special contractor.
NOTE
• The air fi lter that comes with the unit cannot be washed with water.
• Cooling/heating is affected by an air fi lter clogged up with dust etc., and the operation noise becomes louder. It may also use
extra electricity. Please clean the air fi lter at appropriate intervals.
At the end of the season At the beginning of the season
Perform the fan operation for 2 to 3 hours.
1
Dry the inside of the unit.
Stop the unit and turn off the power source.
2
The unit consumes approx. 2W even when the unit is not operating.
Turning off the power source will help saving energy consumption and
cost.
Clean and reinstall the air fi lters.
3
* The air fi lter that comes with the unit cannot be washed with
water.
Remove batteries from the remote control.
4
Ensure that the earth wiring is not snapped
1
nor disconnected.
Check if there is no corrosion or rust on the
2
base frame of the outdoor unit.
Make sure that there are no obstacles blocking
3
the airfl ow around the air intake and outlet
openings of the indoor and outdoor units.
Turn on the power source.
4
Insert batteries in the remote control.
5
EN-25
Page 28
Proper installation
Suitable installation position
• Do not put any obstruction in front of the indoor unit, preventing proper ventilation and functioning.
• Do not install the unit in any of the following places:
• Where there is a danger of leaking fl ammable gases.
• Where there is substantial splashing of oil.
• Malfunctioning due to corrosion may occur if the unit is installed in a spa where sulfi de gases are generated, or in a seaside resort
exposed to sea breezes. Contact your dealer.
• The air-conditioner and remote control must be at least 1 meter away from a TV set or radio.
• Drain the dehumidifi ed liquid from the indoor unit into a spot that drains well.
Pay attention to operating noises!
• When you install the unit, take care to choose a place that can comfortably stand the weight of the unit and does not increase the
operating noise or vibration. If vibration is transmitted through the house, fi x the unit with the aid of vibration-proof pads between the
unit and the fi ttings.
• Select a place where cold or hot air, operation noises from the indoor and outdoor units do not cause any inconvenience to your
neighbours.
• Do not leave any obstacles near the outlet and inlet of the outdoor unit. This may cause malfunctioning and increased operating
noise.
• If you hear an irregular noise during operation, contact your dealer.
Inspection and maintenance
Depending on operating environment, the inside of the air-conditioner may become dirty after a few year operations. This will reduce
performance. In addition to normal cleaning, we would recommend inspection and maintenance. (This may lead the air-conditioner to
having a longer life without any trouble.)
• Contact your dealer, or any distributor, for inspection and maintenance. (There will be a charge for this service).
• We would recommend inspection and maintenance to be carried out during the off-season.
• If the supply cord of this appliance is damaged, it must only be replaced by a repair shop appointed by the manufacturer, because
special purpose tools are required.
Troubleshooting
Please carry out the following checks before making a service call.
The air-conditioner does not work at all.
Has the power switch been
turned off?
Have you set the thermostat
at a suitable temperature?
suitable
temperature
Is there any direct sunlight
entering the room?
Has the timer been set in the
“ON” position?
Poor cooling or heating
Is the air filter clean? (Not
clogged?)
Poor cooling
Is there a heat source in the
room?
Is there a power failure or a
blown fuse?
Did you leave any doors or
windows open?
Are there too many people in
the room?
If the air-conditioner does not
operate properly after you have
checked the left points, or if any
doubt still exists after you have
consulted page 27, or if things
happen as shown on page 28,
switch off the power and contact
your dealer.
EN-26
Page 29
Notice
Air fl ow
Airfl ow is not blown out when starting the HEATING
operation.
RUN light blinks slowly
(1.5 sec ON, 0.5 sec OFF)
Airfl ow is not blown out for 5 to 15 min. or blown out not
warm wind for a moment at HEATING operation.
RUN light blinks slowly
(1.5 sec ON, 0.5 sec OFF)
Airfl ow is not blown out when starting the DRY operation.
(RUN light is on)
Airfl ow has stopped to prevent blowing out of cold air until the
indoor heat exchanger has warmed up. (2 to 5 min.) (HOT
KEEP program)
When outdoor temperature is low and humidity is high, the
unit sometimes performs defrosting automatically. Please
wait. During defrosting, water or steam may escape from the
outdoor unit.
The indoor fan may stop to prevent re-evaporation of
dehumifi ed moisture and to save energy.
Noise
You hear a slight gurgling sound. This is caused by refrigerating liquid moving within the unit.
You hear a slight cracking sound. This is caused by heat expansion or contraction.
You hear a hissing or clicking sound. This is caused by the operation of the refrigerant control
Whistling noise is heard from the outdoor unit. The noise means that the revolution speed of the compressor
Sometimes a “Shooooo” sound might come for a short
time from the unit that is turned off.
valves or electric components.
is increasing or decreasing.
This is the sound when operation of another indoor unit is
stopped.
Others
The unit does not restart immediately after you have
stopped it.
operating?
(RUN light is on)
Not
Restart is blocked for 3 minutes after you have stopped the
operation to protect the unit.
Please wait for
three minutes.
The three-minute protection timer in the microcomputer
automatically starts it up again.
Some steam escapes during COOL operation. This may occur if the room’s temperature and humidity are
There is a slight smell. Air blown out during operation may smell. This is caused by
After a power cut, the unit does not restart even if power
has been restored.
Remote control signals are not received. Remote control signals may not be received if the unit display
Moisture may form on the air outlet grills. If the unit is operated for a long time in high humidity, moisture
Fan will not stop immediately after unit operation was
stopped.
RUN light stays on even though operation was stopped. The RUN light illuminates during CLEAN operation.
very high. It disappears as soon as the temperature and
humidity decrease.
tobacco or cosmetics adhering to the unit.
If the auto restart function is not set, the unit will not restart
automatically. Use the remote control to start the operation
again.
section is exposed to direct sunlight or other bright light.
If so, cut out the sunlight or reduce the other light.
may form on the air outlet grills and start dripping.
Indoor fan : Fan will not stop after 2 hours if set to CLEAN
Outdoor fan : Fan will not stop about a 1 minute period in
Run light turns off when CLEAN operation ends.
operation.
order to protect the unit.
EN-27
Page 30
Contact your dealer
■ Turn off the power switch immediately and inform your dealer in any of the following situations:
The fuse or switch blows continuously.
The cable becomes extremely hot.
The covering of the cable is cracked.
Fuse often blows.
The TV, radio or other equipment
starts to malfunction.
When the foreign matters enter the indoor unit through the
air outlets and the dumper becomes inoperable, call your
dealer.
When abnormalities occur, turn off the power source immediately and turn it on after 3 minutes.
Restart the operation with ON/OFF button of the remote control and the abnormalities still continue.
If the power cord becomes damaged, ask your dealer or a qualifi ed engineer to
install the replacement to avoid accidents.
A switch does not activate properly. You hear a strange noise during
The RUN and TIMER lights on the unit display section blink
quickly (0.5 sec. ON; 0.5 sec. OFF) and do not work.
CAUTION
operation.
About the Multiple Air-conditioner
Simultaneous operation
• The air-conditioners cannot be in different operating modes at the same time, such as one unit being in the “Cool” mode and one
unit being in the “Heat” mode.
• When conducting different operations, the air-conditioner that was operated fi rst will be given priority, so the air-conditioner that is
operated after that will conduct air blowing operation.
• When you want to give priority to the air-conditioner that was started later, either stop the air-conditioner that has priority or cause
the operation type of the unit operated fi rst to match that of the unit operated second.
• When other indoor units are operating in different modes, the RUN light illuminates.
0.5 sec.
ON
OFF
0.5 sec.
Automatic operation
• When the remote control operation switch is in the “AUTO” mode the air-conditioner automatically selects either “COOL,” “DRY,” or
“HEAT” when operation is started depending on the room temperature.
• During simultaneous operation of air-conditioner units, operation modes may be automatically changed in response to the temperatures of the individual rooms; this will result in the operation of the outdoor unit being stopped. In such a case, COOL or HEAT mode
should be used instead of AUTO. (This is only relevant when more than one air-conditioner unit is being used.)
Refrigerant (oil) recovery operation
• If the all of the indoor units are not operated at the same time for an extended period, the cooling or heating performance may temporarily decrease. This is in order to control the recovery of the refrigerant (oil) in the stopped indoor unit(s). At this time, the sound
of refrigerant fl owing may be heard from the stopped indoor unit(s).
EN-28
Page 31
Self diagnosis function
■ We are constantly trying to do better service to our customers by installing such judges that show abnormality of each function as follows:
RUN light
1-time flash
Description of trouble
Heat exchanger sensor 1 error
Cause
• Broken heat exchanger sensor 1 wire, poor connector
connection
TIMER light ON
RUN light keeps flashing
2-time flash
3-time flash
4-time flash
5-time flash
6-time flash
7-time flash
TIMER light
1-time flash
2-time flash
4-time flash
5-time flash
1-time flash
2-time flash
3-time flash
Room temperature sensor error
Heat exchanger sensor 3 error
Drain error
Active filter voltage error • Defective outdoor unit boards
Indoor fan motor error
Refrigerant is insufficient
Closed service valve
Heat exchanger sensor 1 error
Outdoor temperature sensor error • Broken outdoor sensor wire, poor connector connection
Outdoor heat exchanger fluid pipe
sensor error
Discharge pipe sensor error
Suction pipe sensor error • Broken suction pipe sensor wire, poor connector connection
Current cut
Trouble of outdoor unit
Over current
•
Broken room temperature sensor wire, poor connector
connection
• Broken heat exchanger sensor 3 wire, poor connector
connection
Drain at reverse gradient
•
•
Float switch defective
• Defective fan motor, poor connector connection
•
Refrigerant is insufficient, leaking
•
Closed serice valve
Broken heat exchanger sensor 1 wire, poor connector
•
connection
•
Broken heat exchanger fluid pipe sensor wire, poor
connector connection
• Broken discharge pipe sensor wire, poor connector connection
•
Compressor locking, open phase on compressor
output, shortcircuit on power transistor, closed service
valve
• Broken power transistor, broken compressor wire
• Broken discharge pipe sensor wire, poor connector connection
• Compressor blockage
• Overload operation, overcharge of refrigeration
RUN light ON
RUN light 2-time flash
RUN light 7-time flash
4-time flash
5-time flash
6-time flash
7-time flash
Keep flashing
2-time flash
1-time flash
Power transistor error
Over heat of compressor
Error of signal transmission
Outdoor fan motor error • Defective fan motor, poor connector connection
Cooling high pressure protection • Overcharge of refrigeration, short circuit of outdoor unit
Rotor lock
Closed service valve
• Broken power transistor
•
Gas shortage, defective discharge pipe sensor, closed
service valve
•
Defective power source, Broken signal wire, defective
in/outdoor unit boards
• Defective compressor
• Open phase on compressor
• Defective outdoor unit boards
• Closed serice valve
EN-29
Page 32
MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
16-5 Konan 2-chome, Minato-ku, Tokyo, 108-8215, 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 : +44-333-207-4072
Fax: +44-333-207-4089
http://www.mhiae.com/
MITSUBISHI HEAVY INDUSTRIES AIR-CONDITIONERS AUSTRALIA, PTY. LTD.
9C Commercial Road Kingsgrove NSW 2208 PO BOX 318 Kingsgrove NSW 1480
Tel : +61-2-8571-7977
Fax: +61-2-8571-7992
http://www.mhiaa.com.au
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