USER’S MANUAL
SRK20HG
SRK28HG
SRK40HG
AIR-CONDITIONER
РУКОВОДСТВО ПО ЭКСПЛУАТАЦИИ
КОНДИЦИОНЕР ВОЗДУХА
KULLANIM KILAVUZU
SPL‹T KL‹MA
ENGLISH
РУССКИЙ
TÜRKÇE
This air conditioner complies with EMC Directive 89/336/EEC, LV
Directive 73/23/EEC.
RKX012A014
Thank you for purchasing a MITSUBISHI HEAVY INDUSTRIES, LTD. Air-Conditioner. To
get the best long-lasting performance, 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.
This air-conditioner is intended for domestic use.
contents
Safety precautions......................................................................................................................... 2
Name of each part and its function ............................................................................................... 4
Operation and indication section for remote control .................................................................... 5
Present time setting procedure ...................................................................................................... 5
AUTO mode operation procedure ................................................................................................ 6
Temperature adjustment during AUTO ........................................................................................ 6
About FAN SPEED ...................................................................................................................... 6
COOL/HEAT/DRY mode operation procedure ........................................................................... 7
Air-conditioner operating conditions............................................................................................7
Characteristics of HEAT mode operation .................................................................................... 7
Air flow direction adjustment procedure ...................................................................................... 8
SLEEP operation procedure ......................................................................................................... 9
OFF-TIMER operation procedure ................................................................................................ 9
ON-TIMER operation procedure................................................................................................ 10
SLEEP operation + ON-TIMER operation procedure ............................................................... 10
PROGRAM TIMER operation procedure .................................................................................. 11
HIGH POWER/ECONOMY operation procedure ..................................................................... 12
Concerning CLEAN operation ................................................................................................... 13
Emergency run operation............................................................................................................ 13
Power blackout auto restart function .......................................................................................... 13
Remote control handling procedure ........................................................................................... 14
When the operation fails with the remote control ...................................................................... 14
Operating hints ........................................................................................................................... 14
Maintenance................................................................................................................................ 15
Has the unit been installed correctly? ......................................................................................... 17
Troubleshooting .......................................................................................................................... 17
Please remember! ....................................................................................................................... 18
When to contact your distributor without delay ......................................................................... 19
Self diagnosis function ............................................................................................................... 19
ENGLISH
–1–
Safety precautions
• Before starting to use the system, please read these “Safety precautions” carefully to ensure proper operation of the system.
• The safety precautions are classified as “
improper handling could have dramatic consequences like death, serious injury, etc. Nevertheless, even precautions as shown in the column “
CAUTION” might pose a serious problem, depending on the circumstances. Please observe these precautions with great care, since they are
essential to your safety.
• Symbols which appear frequently in the text have the following meaning:
DANGER” and “ CAUTION”. Precautions as shown in the column “ DANGER” indicate that
Strictly prohibited Provide positive earthing
• When you have read the instruction manual, please keep it near at hand for consultation. If someone else takes over as operator, make certain that the
manual is also passed on to the new operator.
Observe instructions with
great care
❚ INSTALLATION PRECAUTIONS
DANGER
The system is meant for domestic, residential etc. use. The system must be installed by your dealer or a qualified pro-
If used in inferior environments, such as an engineering
workplace, the equipment may function poorly.
Do not install near places where inflammable gas may leak.
Gas leaks may cause fire. If you don’t fit a circuit breaker, you may cause an electric
Make sure that you drain the hose properly, so that all the
water has dripped out.
Negligence may cause flooding in the room resulting in wet
furniture.
fessional.
It is not advisable to install the system yourself, as faulty
handling may cause leakage of water, electric shock or fire.
CAUTION
Depending on the place of installation, a circuit breaker may
be necessary.
shock.
Make sure that the system has been properly earthed.
Earth cables should never be connected to a gas pipe, municipal
water pipe, lightning conductor or telephone earth cable. Incorrect installation of the earth cable may produce an electric shock.
❚ OPERATION PRECAUTIONS
Do not expose yourself to the cooling
air for prolonged periods.
This could affect your physical condition and cause health problems.
Only use approved fuses.
Use of steel or copper wire instead of
an approved fuse is strictly forbidden,
as it may cause a breakdown or fire.
Do not place a combustible insecticide
or paint spray near the blower, nor aim it
directly at the system.
This may result in a fire. The appliance may then work inad-
DANGER
Do not insert anything into the air inlet.
This may cause injury, as the internal fan rotates at high speed.
CAUTION
Do not handle the switches with wet
hands.
This may cause an electric shock. If the system falls down,
You should not expose any combustion appliance directly to the air
stream of the air-conditioner.
equately.
– 2 –
Store the remote control out of reach
of infants.
Failure to observe this may result in
the batteries being swallowed or
other accidents.
Don’t swing from the system.
you may get injured.
Do not wash the air-conditioner with water.
This could cause an electric shock.
Safety precautions
The system should only be used for its original purpose
and not for anything else like, for instance, preservation of
food, plants or animals, precision devices or works of art.
Do not place anything containing water, like vases, on top of the unit.
CAUTION
Do not install the system at a place
where the air stream of the blower is
aimed directly at plants or animals.
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 sit on the outdoor unit nor put
anything on it.
If the unit falls down or things drop
off it, people could get hurt.
Do not place household electrical appliances or household items beneath the
indoor or outdoor units.
Condensation falling from the unit
can stain objects and cause accidents
or electrical shock.
When you clean the system, stop the
unit and turn off the power switch.
Never clean the unit while the internal
fan is rotating.
Water entering the unit could damage the insulation and therefore
cause an electric shock.
After a long period of use, check the unit's
support structure from time to time.
If you don't repair any damage
straightaway, the unit may fall
down and cause personal injury.
If you operate the system together
with a combustion appliance, you
must regularly ventilate the indoor air.
Insufficient ventilation may cause
accidents due to oxygen deficiency.
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 resulting in break down,
emission of smoke or flame.
This will damage their health.
Do not touch the aluminum fins on the
air heat exchanger.
Failure to observe this may result in
injury.
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.
Contact your dealer to clean inside
the indoor unit, do not attempt to do
so yourself.
The use of a non-approved detergent
or improper washing method can
damage the unit’s plastic components and cause leaks. Damage,
smoke, or fire can also result if the
detergent comes in contact with
electrical parts or the unit’s motor.
Stop the unit and turn off power if you
hear thunder or there is a danger of
lightning.
Electrical storms can damage the unit.
❚ PRECAUTIONS FOR TRANSFER OR REPAIRS
DANGER
Consult your dealer for repairs to the
system.
Wrong repairs could cause an electric
shock, fire, etc.
If the air-conditioner fails to cool or warm, it may have a refrigerant leak. Contact
your dealer.
If refrigerant needs to be added, check with your dealer for proper instructions.
The refrigerant used in your air-conditioner is safe. However, if refrigerant unexpectedly leaks
from the unit onto a fan heater, stove, hotplate or other heat source, harmful products could be
released.
If the air-conditioner is moved elsewhere, contact your dealer or a professional fitter.
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 switch and consult your dealer.
Continued use of the system in abnormal circumstances may result in
malfunctioning, electric shock, fire,
etc.
– 3 –
Name of each part and its function
INDOOR UNIT
Air Inlet panel
Draws in the indoor air.
Air filter
Removes dust or dirt from the inlet air.
Page 15
Air-cleaning filter
Room temperature detector
Unit operation switch
Air outlet
Air blows out of here.
Left/right air flow adjustment louver
Page 8
Up/down air flow direction adjustment flap
Page 8
Drain hose
Drains water from the dehumidified air.
Refrigerant piping connection electric flex
Unit indication section
TIMER light (yellow)
Illuminates during TIMER operation.
RUN (HOT KEEP) light (green)
• Illuminates during operation and CLEAN
operation.
Blinks at air flow stop due to the ‘HOT KEEP’.
•
1.5 sec.
ON
OFF
Page 18
0.5 sec.
RUN TIMER
ON / OFF
HI POWER light (green)
Illuminates during HIGH POWER operation.
ECONO light (orange)
Illuminates during ECONOMY operation.
HI POWER ECONO
Unit ON/OFF button
In emergencies, this button can be used for turning on/off the unit
when remote control is not available.
Page 13
Remote control signal receiver
– 4 –
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.
Present time setting procedure
■ When inserting the batteries, the present time is automatically set to time setting mode.
Example: Set to 10:30.
1
2
3
Press the ACL switch.
Press with the tip of a ballpoint pen, etc.
The time indicator blinks and can be set to the current time.
Press the “ or ” button.
(Set to 10:30)
Press the ON/OFF button.
The indication changes from blinking to steady lighting and the setting is complete.
NOTE
• The timer operation is set on the basis of the present time, so please set it correctly.
• The remote control data is reset when the present time is set.
– 5 –
Press within
60 sec.!
AUTO mode operation procedure
■
Automatically selects the operation mode (COOL, HEAT, DRY) depending on the room temperature when switched on.
When the unit is not in AUTO mode:
Press MODE button.
Move the [ mark] to the (Auto) position.
Aim the remote control at the air-conditioner.
Press the ON/OFF button.
To stop: Press the ON/OFF button.
AUTO mode can be
operated by simply
pressing the ON/OFF
button.
• If you don’t want the AUTO mode program, change to
COOL, HEAT or DRY instead of AUTO.
Air flow direction adjustment
procedure.
Page 8
1
2
NOTE
• Air is not blowing out during the operation.
Page 18
Temperature adjustment during AUTO
Page 7
■
Air temperature adjustment is possible even during automatic operation. There are 6 levels of adjustment possible with the button or the button.
■ Each time the
■ Each time the button is pressed, the switch over occurs in the following order
When a change in temperature is desired.
1
When it is a little cold
Press the
When it is a little hot
Press the
Press the or button.
button.
button is pressed, the switch over occurs in the following order
–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.
When –6 is indicated, even if the button is pressed, the indicator does not change.
About FAN SPEED
■ You can choose the capacity of your air-conditioner when heating or cooling.
Operation capacity by your choice FAN SPEED
Set automatically by microcomputer AUTO
Powerful operation with high capacity HI
Standard operation MED
Energy-saving operation LO
Press the FAN SPEED button.
Move the [ mark] to the desirable fan speed position.
AUTO HI MED LO
– 6 –
COOL/HEAT/DRY mode operation procedure
Aim the remote control at the air-conditioner.
Air flow direction adjustment procedure. Page 8
NOTE
The air is not blown out during the operation.
•
Page18
1
2
3
4
Press the MODE select button.
Move the [ mark] to the desirable operation position.
(Cool), (Heat), (Dry)
Press the ON/OFF button.
Press the TEMP button.
Press or button for the desired temperature.
Standard
Press the FAN SPEED button
Set the fan speed as desired.
To stop: Press the ON/OFF button.
Program changing procedure
Set the new program.
• The operation program can also be set or changed when
the air-conditioner is not in operation.
Air-conditioner operating conditions
■ 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 Approximately 21 to 43 °C Approximately -5 to 21 °C
Inside temperature Approximately 21 to 32 °C Approximately 15 to 30 °C
Below approximately 80%
Inside humidity
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 drips.
Characteristics of HEAT mode operation
Mechanism and capacity of HEAT mode operation
■ Mechanism
• The unit draws in heat from the cold outside air, transfers it indoors and heats the room. The heating capacity of the heat pump mechanism decreases
when the outside air temperature gets colder.
• The hot air circulation system takes a while before warming up the room temperature.
• 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 defroster is activated and during defrosting the heating operation stops for 5 to 10 minutes.
• Both indoor and outdoor fans stop and the RUN light (green) 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.
– 7 –
Air flow direction adjustment procedure
Adjusting air flow direction
■ Up/down direction can be adjusted with the AIRFLOW button on the remote control. Each time when you press this button the mode changes
as follows:
Change to AIRFLOW mode.
(Flap stopped)
NOTE
• When heating operation starts, the cold air outlet is blocked, so the flap move to the horizontal position, and resume the position that was set after the warm air
output begins.
• When the compressor stops because the room temperature is higher than the temperature setting and it is in DEFROSTING operation, the flap will be in the
horizontal position.
• The air flow direction cannot be set in the instances above. Change the air flow direction settings after the warm air starts flowing and it moves to the airflow
direction that had been set.
Adjusting left/right air flow direction
MEMORY FLAP (FLAP STOPPED)
When you press the AIRFLOW button once while the flap is operating, it stops swinging at an
angle.Since this angle is memorized in the microcomputer, the flap will automatically be set at this
angle when the next operation is started.
• Recommended angle of the flap when stopping
HEAT
• Avoid constant airflow to the body for hours on end.
• When in COOL or DRY operation, do not operate for hours on end with the air
flow blowing straight down. Otherwise, condensation may appear on the outlet
grill and drip down.
• Do not try to adjust the flaps by hand, as the control angle may change or the flap
may not close properly.
(Slant forward
blowing)
COOL, DRY
DANGER
CAUTION
(Horizontal
blowing)
Adjust the direction by moving the left/right
air flow fin by hand.
Please stop the air conditioner when
adjusting the air flow direction.
(Swing)
CAUTION
– 8 –
SLEEP operation procedure
■ The unit stops automatically at the end of the set period of time.
The room temperature is automatically controlled when the set time lapses, so that the room does not become too cold during cooling or too warm
during heating.
Page 11
Press the SLEEP button.
1
■ If this is pressed while the unit is off
SLEEP operation starts with the previous operation settings, and the air conditioning is
turned off after the time that has been set passes.
■ If this is pressed while the unit is running
Each time the button is pressed, the indication changes as follows:
...
(Units of one hour)
No indication
(cancelled)
Example: You wish it to stop after 7 hours.
Set to
The timer light (yellow) is on.
h
NOTE
Cannot be set at the same time as OFF-TIMER.
Changing of set time
Set to a new time by using SLEEP button.
Releasing procedure
Press the CANCEL button to turn off the SLEEP indicator.
• The unit stops at the end of the set period of time.
•
OFF-TIMER operation procedure
■
The unit stops automatically at the end of the set period of time. If it is stopped, perform the operations starting with STEP 1 and if running start with STEP 2.
Changing of set time
Set a new time by using the OFF TIMER button.
Releasing procedure
Press the CANCEL button to turn off the timer indicator.
Example: You wish it to stop 22:30.
1
2
3
4
• The present time is not displayed during OFF-TIMER operation.
• Unlike SLEEP operation, automatic temperature adjustment is impossible during
Press the ON/OFF button.
Press the OFF TIMER button.
OFF TIMER indicator is blinking.
Press the “ or ” button.
Each time the button is pressed, the indicator is switched in the order of:
h
...
...
1:00 1:10
23:00 22:50
(Units of ten minutes)
(Units of ten minutes)
Press within
60 sec.!
0:00 0:10 0:20
Each time the button is pressed, the indicator is switched in the order of:
0:00 23:50 23:40
Set at 22:30.
Press the OFF TIMER button.
The indication changes from blinking to steady lighting and the setting is complete.
The timer light (yellow) is on.
• The unit stops at the end of the set period of time.
NOTE
OFF-TIMER operation.
– 9 –
ON-TIMER operation procedure
■
Operation starts 5 to 60 minutes before the time that is set so that the room temperature reaches the optimum temperature at that time.
ON-TIMER operation can be set regardless of whether the air-conditioner is running or not.
Example: In the case you wish to bring the temperature to nearly set temperature in at 8:00.
Press the ON-TIMER button.
1
ON TIMER indicator is blinking.
Page 11
Changing of set time
Set a new time by using the ON-TIMER button.
Releasing procedure
Press the CANCEL button to turn off the timer
indicator.
Press the “
2
3
Each time the button is pressed, the indicator is switched in the order of:
0:00 0:10 0:20
Each time the button is pressed, the indicator is switched in the order of:
0:00 23:50 23:40
Set at 8:00.
Press the ON TIMER button.
The indication changes from blinking to steady lighting and the setting is complete.
The timer light (yellow) is on.
• Operation starts 5 to 60 minutes before the set time.
• The TIMER light goes out at the set time.
NOTE
•
The present time is not displayed during ON-TIMER operation.
or ” button.
...
1:00 1:10
...
23:00 22:50
h
(Units of ten minutes)
(Units of ten minutes)
Press within
60 sec.!
SLEEP operation + ON-TIMER operation procedure
■ Combined timer operation of SLEEP operation and ON TIMER.
Example: When it is desired to stop after 3 hours and then start operation at 8:00, near
the set temperature.
Changing of set time
Set a new time by using the SLEEP or ON TIMER button.
■ SLEEP operation setting
Set by the procedures on page 9.
Set to
■ ON TIMER operation setting
Set by the above mentioned ON TIMER operation procedure.
Set to
The setting of the lighting of the timer light (yellow) of this unit is complete.
• After the SLEEP operation set time has elapsed, the operation stops, and it
starts from 5 to 60 minutes before the ON TIMER’s time.
• The timer light is not lit at the ON TIMER’s time.
Releasing procedure
Press the CANCEL button to turn off the timer indicator.
h
– 10 –
PROGRAM TIMER operation procedure
■ The timer operations that consist of the combination of the timer being set at both on and off. Once this has been set and operations started,
operations will commence and end at the same time every day as long as the ON/OFF button is not pressed.
Example: When it is desired to stop at 22:30, and then start operation at 8:00, near the set
temperature.
■ OFF TIMER operation setting
Set by the procedures on page 9. Set to
■ ON TIMER operation setting
Set by the procedures on page 10. Set to
The setting of the lighting of the timer light (yellow) of this unit is complete.
The time will be displayed on the remote control unit. The display will change
depending on the operational status.
(Stopped) (Operating)
Changing of set time
Set a new time by using the OFF TIMER or ON TIMER button.
Releasing procedure
Press the CANCEL button to turn off the timer indicator.
About Amenity facilities
Amenity facilities enable to start the operation a little earlier, so that the room
should approach optimum temperature at ON time when the operation is
started by ON-TIMER.
• Mechanism
The room temperature is checked
60 minutes before the timer is at
ON. Depending on the temperature at that time, the operation
starts 5 to 60 minutes before the
timer is at ON.
• The Amenity facility only functions for 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.
in advance.
▼
(Operation)
Set time
About SLEEP operation
When SLEEP operation is selected, the room temperature is automatically
controlled 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 2°C higher.
• During heating: Preset temperature is lowered by 1°C at the start of SLEEP
operation (when the timer is set). After that the temperature is lowered by
1°C every 30 minutes to become 3°C lower in an hour and 6°C lower in two
hours.
– 11 –
HIGH POWER/ECONOMY operation procedure
If the air-conditioner is not operating, aim the remote control at the air-conditioner.
1
2
Concerning
Pressing the HI POWER/ECONO button intensifies the operating power and initiates powerful cooling or heating operation for 15 minutes
continuously. The remote control
• During the HIGH POWER operation, the room temperature is not
controlled. When it causes an excessive cooling or heating,press
the HI POWER/ECONO button once more to cancel the HIGH
POWER operation.
• HIGH POWER operation is not available during the DRY and the
program timer operations.
• During ON timer operation, HIGH POWER operation will start
when the ON time is reached.
NOTE
HIGH POWER
operation
indicates but the FAN SPEED indication is erased.
Press the ON/OFF button.
Press the HI POWER/ECONO button.
• When the operating mode is AUTO, COOL or HEAT
Each time the HI POWER/ECONO button is pressed, the indicator is switched
in the order of:
No indication
(
HIGH POWER
• When the operating mode is DRY or PROGRAM TIMER
Each time the HI POWER/ECONO button is pressed, the indicator is switched
in the order of:
ECONOMY
(
• When the following operations are conducted HIGH POWER operation will be canceled.
1 When the HI POWER/ECONO button is pressed again.
2 When the operation mode is changed.
3 When it has been 15 min. since HIGH POWER operation
has started.
)(
ECONOMY
) (Normal operation)
) (Normal operation)
No indication
Concerning
Pressing the HI POWER/ECONO button intlates 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 for weak wind capacity during cooling or 2.5°C lower than that during heating. The remote
control
• It will go into ECONOMY operation the next time the air-conditioner runs in the following instances.
1
2
3 When CLEAN operation ends.
ECONOMY
indicates but the FAN SPEED indication is eraseed.
NOTE
When the air-conditioner is stopped using the ON/OFF button.
When the air-conditioner is stopped in SLEEP or OFF
TIMER operation.
operation
• When the following operations are conducted ECONOMY operation will be canceled.
1 When the HI POWER/ECONO button is pressed again.
– 12 –
Concerning 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.
Press the CLEAN switch with the tip of a ballpoint pen.
1
Each time the CLEAN switch is pressed, the indicator is switched
in the order of:
(CLEAN on) (CLEAN off)
To stop: Press the ON/OFF button.
NOTE
• CLEAN operation is impossible after HEAT, OFF-TIMER and SLEEP operations have stopped.
• The indoor unit fan runs for about two hours in CLEAN operation.
• The RUN light illuminates during CLEAN operation.
• Pressing the SLEEP button during CLEAN operation, cancels the CLEAN op-
eration and the unit then sets itself to SLEEP operation.
• This is not a function for removing mold, germs or grime that have already adhered to the unit.
No indication
Emergency 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.
Unit ON/OFF button
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 moving the air-conditioner.)
Power blackout auto restart function
■ What is power blackout auto restart function?
• Power blackout auto restart function is a function that records the operational status of the air-conditioner immediately prior to it being switched off
by a power cut, and then automatically resumes operations at that point after the power has been restored.
• The following settings will be cancelled:
1 Timer settings
2 HIGH POWER operations
NOTE
• The power blackout 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 cancelled. Once power is resumed, reset the timer.
– 13 –
Remote control handling procedure
Replacing the batteries
The following cases signify exhausted batteries. Replace old batteries with new ones.
• Receiving beep is not emitted when a signal is transmitted.
• Indicator fades away.
NOTE
Remove back lid and take out
1
old batteries.
Insert new batteries.
2
R03 (AAA, Micro) x2
Attention to
the , and .
marks
• Don't use old and new batteries together.
• Remove the batteries when the remote control is not used for a long period.
• The life 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.
• On the battery is printed its expected life. This may be shorter than that of the airconditioner, depending on the date of manufacture. However, the battery may still
be in working order after expiry of its nominal life.
■ When the indicator shows any abnormal condition, Press the reset switch
with the tip of a ballpoint pen.
Using the remote control holder
Close back lid.
3
Press the reset switch with the
4
tip of a ballpoint pen.
The timer setting mode is indicated.
Page 5
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
• Don’t go near high temperature
places, such as an electric carpet
or stove.
• Don’t put any obstructing obsta-
cles between the remote control
and the unit.
• Don’t leave the remote control ex-
posed to direct sunlight or other
strong lighting.
• Don’t spill water etc on the remote
control.
• Don’t drop the remote control.
Handle with care.
• Do not place heavy objects on the
remote control, or step on it.
When the operation fails with the remote control
• Are the batteries running down?
“Replacing the batteries” above.
Replace the batteries with new ones and repeat the operation.
• If the operation still fails, handle as per emergency
run operation.
Contact your dealer.
Page 13
Operating hints
■ 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 electricity.
Adjust the airflow direction properly.
Adjust the up/down and left/right airflow to
ensure a steady room temperature.
Clean the filters frequently.
Clogged filters may block the air flow and
cause less efficient operation.
Operate the unit only when needed.
Use the timer properly to operate the unit
only when needed.
– 14 –
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.
Generate little heat when cooling.
Keep heat sources out of the room as much as
possible.
Maintenance
Before maintenance During the operational season
Turn off the power switch.
• Don’t spill water.
There's a danger
of electric shock.
Wipe the unit with a soft,
dry cloth.
• Do not touch the aluminum fins on the heat
exchanger.
Stand firmly on a stepladder or other stable
•
object when removing the inlet panel and filter.
Don’t use the following articles:
• Hot water (40°C or more)
It may deform or discolour the unit.
• Petrol, paint thinner, benzine or polishing agents,
etc.
They may deform or scratch the unit.
Cleaning the air filter Standard interval is once every two week
Remove the air filter
1
1 Pull up to this side the air inlet panel.
Lightly hold the knobs at both sides and
2
lift a little to remove the panel to this
side.
Cleaning
2
If the filter is very dirty, clean it with warm water
(approx. 30°C), and dry it thoroughly.
• Don’t clean the filters with boiling water.
• Don’t dry them over an open flame.
• Pull them out gently.
Reinstall the air filter
3
• Holding firmly the filter at both sides as shown at right
and insert securely.
• Operating without putting back the air filters will make
the unit dusty, and may cause damage.
Cleaning the unit
• Wipe the unit with a soft, dry cloth, or use a vacuum cleaner.
• If the unit is very dirty, wipe it with a cloth soaked in warm water.
Cleaning the air inlet panel
• Removal, installation of air inlet panel .
• The panel can be washed with water. After washing with
water, wipe any moisture off the panel and dry out of
direct sunlight.
CAUTION
How to open the air inlet panel
Place fingers at the recesses on both sides of the panel and pull up the panel
to this side so that it will be opened by about 60 degrees.
Removal, installation of air inlet panel
When removing the air inlet panel for internal cleaning or others, open the
panel by 80 degrees and then pull it to this side.
How to close the air inlet panel
Push both sides evenly and press further lightly at the center.
Secure the upper edge of the air inlet panel by lightly pushing it in, and then
close the panel.
– 15 –
NOTE
Cooling/heating is affected by an air filter clogged up with dust etc., and the operation noise becomes louder. It may also
use extra electricity. Please clean the air filter at appropriate intervals.
At the end of the season
Set the temperature setting for approximately a half
1
day at 30°C and perform the cooling operation.
Dry the inside of the unit.
Stop the unit and turn off the power switch.
2
The unit uses appr. 2W even when the power switch has been turned
off during the off-season for safety or for saving energy.
Clean and reinstall the air filters.
3
Clean both the indoor and outdoor units.
4
Remove batteries from the remote control.
5
Installing, inspecting, and replacing the air-cleaning filter
1. Open the air inlet panel and remove the air filters.
2. Remove the filter holders, with the air-cleaning filter installed in the folders, from the air-conditioner.
3. Remove the photocatalytic washable deodorizing filter from the filter holder and inspect the
filter. Periodically, remove any dust or dirt from the photocatalytic washable deodorizing filter.
If the photocatalytic washable deodorizing filter is particularly dirt, it may be washed with water. However, the filter is fragile so be sure to wash it installed in the filter holder to avoid
damaging it. After washing the filter, place it in sunlight to dry. Placing the filter in sunlight
revitalizes the deodorizing effect.
Remove the natural enzyme filter from the filter holder and inspect the filters. Use a vacuum
cleaner to remove any dust or dirt from the natural enzyme filters. Replace the natural enzyme
filters if it cannot be cleaned or if it has been used for about 1 year.
(The natural enzyme filter should be replaced after about 1 year of use. However, the actual
replacement period may vary depending on the conditions in which the filters is used.)
(Do not dispose of the filter holders. They are reused. )
4. Install the air-cleaning filter in the filter holders, and then install the filter holders in the
air-conditioner.
At the beginning of the season
Make certain that there are no obstacles blocking the
1
air flow around the air intake and outlet openings of
the indoor and outdoor units.
Check the installation base for corrosion or rust.
2
Ensure that nothing has snapped and that the
earthed flex is not disconnected.
3
Ensure that the air filters are clean.
4
Turn on the power switch.
5
Insert batteries in the remote control.
6
Filter holder
Filter
InstallInstall
NOTE
The natural enzyme filter and the photocatalytic washable deodorizing filter may be
installed on either the right or left side of the air conditioner.
5. Install the air filters and closed the air inlet panel.
CAUTION
Do not expose natural enzyme filters to direct sunlight for an extendet period. The bacteriolytic effect will be lost.
For replacement the air-cleaning filter, contact your dealer.
Item Feature Color
Photocatalytic washable
deodorizing filter
Natural enzyme filter
Sources of odors on the filter are broken up, resulting in a
deodorizing effect.
By using the work of enzyme, mold and bacteria on the filter
are destroyed and the room air is kept clean.
– 16 –
Orange
Green
Has the unit been installed correctly?
Suitable installation position
• Is there any obstruction in front of the indoor unit, preventing proper ventilation and functioning?
• Don’t install the unit in any of the following places:
• Where there is a danger of leaking inflammable gases.
• Where there is substantial splashing of oil.
• Malfunctioning due to corrosion may occur if the unit is installed in a spa where sulfide 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 metre away from a TV set or radio.
• Drain the dehumidified 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 there is any likelihood that vibration may be transmitted through the house, fix the unit with the aid of vibration-proof pads
between the unit and the fittings.
• Select a place where cold or hot air and 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
Dependent upon service conditions and operating environment, the inside of the air-conditioner may become dirty after a number of seasons’
service (3 to 5 years). This will reduce performance. In addition to normal cleaning, we would recommend inspection and maintenance. (The airconditioner has 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
18, or if things happen as shown on
page 19, switch off the power and
contact your dealer.
– 17 –
Please remember!
You cannot restart the unit immediately after you have
stopped it.
(RUN light is on)
Not
operating?
Air is not blown out when starting the HEATING operation.
RUN light blinks slowly
(1.5 sec ON, 0.5 sec OFF)
Air is not blown out for 5 to 10 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)
Air is not blown out when starting the DRY operation.
(RUN light is on)
Some steam escapes during COOL operation.
There is a slight smell.
You hear a slight gurgling sound.
Restarting has been blocked for 3 minutes after you have stopped or
after switching off the power during operation, to protect the unit.
Please wait for
three minutes.
The three-minute protection timer in the microcomputer automatically
starts up again.
Air flow has stopped to prevent blowing out of cold air until the indoor
heat exchanger has warmed up. (2 to 5 min.) (HOT KEEP)
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 dehumified
moisture and to save energy.
This may occur if the room's temperature and humidity are very high.
It disappears as soon as the temperature and humidity decrease.
Air blown out during operation may smell. This is caused by tobacco
or cosmetics sticking to the unit.
This is caused by liquid refrigerant moving within the piping of indoor
unit. Liquid refrigerant will be evaporated and become as gaseous refrigerant during passing through the pipe in order to absorb the heat
inside the room.
You hear a slight cracking sound.
You hear a hissing or clicking sound.
After a power cut, you cannot re-start, even if power has been restored, unless you have the power blackout auto restart function.
Remote control signals are not received.
Moisture may form on the air outlet grills.
Fan won't stop immediately after unit operation was
stopped.
RUN light stays on even though operation was stopped.
This is caused by expansion and contraction of plastic body. Temperature change of plastic material due to compressor’s alternative operation cause a slight cracking noise.
This is caused by the operation of the refrigerant control valves or
electric components.
The memory circuit of the microcomputer has been wiped out. Use the
remote control to start the operation again.
Remote control signals may not be received if the signal receiver on
the air-conditioner is exposed to direct sunlight or other bright light.
If so, cut out the sunlight or reduce the other light.
If the unit is operated for a long time in high humidity, moisture may
form on the air outlet grills and start dripping.
Indoor fan :
The RUN light illuminates during CLEAN operation.
Run light turns off when CLEAN operation ends.
Fan will not stop after 2 hours if set to CLEAN operation.
– 18 –
When to contact your distributor without delay
■ Turn off the power switch immediately and inform your dealer in any of the following situations:
The fuse or switch blows continuously.
Fuse often blows.
The cable becomes extremely hot.
The covering of the cable is cracked.
CAUTION
If the power cord becomes damaged, ask your dealer or a qualified engineer to install the
replacement to avoid accidents.
The TV, radio or other equipment
starts to malfunction.
When faulty movement is observed when the ON/OFF button is pressed, even after turning off the power switch and
restarting the operation after 3 minutes, the faulty movement does not disappear.
A switch does not activate properly. You hear a strange noise during opera-
The RUN and TIMER lights on the unit indication section
blink quickly (0.5 sec. ON; 0.5 sec. OFF) and don’t work.
3 minutes go
by, but, why ...
tion.
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:
TIMER light ON
RUN light
1 time flash
2 time flash
6 time flash
Description of trouble
Heat exchanger sensor error
Room temperature sensor error
Indoor fan motor error
Cause
• Broken heat exchanger sensor wire, poor connector
connection
• Broken room temperature sensor wire, poor connector connection
• Defective fan motor, poor connector connection
RUN light keeps flashing
RUN light ON
TIMER light
1 time flash
2 time flash
4 time flash Discharge pipe sensor error • Broken discharge pipe sensor wire, poor connector connection.
2 time flash
5 time flash
6 time flash
Outdoor temperature sensor error • Broken outdoor sensor wire, poor connector connection
Outdoor heat exchanger fluid pipe
sensor error
Trouble of outdoor unit
Over heat of compressor
Error of signal transmission
• Broken heat exchanger fluid pipe sensor wire, poor connector
connection
• Broken discharge pipe sensor wire, poor connector connection
• Compressor blockage
• Gas shortage, defective discharge pipe sensor, closed service
valve
• Defective power supply, Broken signal wire, defective in/outdoor
unit boards
– 19 –
– 20 –
AIR-CONDITIONING & REFRIGERATION SYSTEMS HEADQUARTERS
16-5, 2-Chome, Kounan, Minato-ku, Tokyo, 108-8215, Japan
Fax: (03) 6716-5926
MITSUBISHI HEAVY INDUSTRIES EUROPE, LTD.
AIR-CONDITIONER DIVISION
3rd Floor Thavies Inn House 3-4 Holborn Circus London EC1N 2HA, ENGLAND
Phone: 44(0)20 7842 8171
Fax: 44(0)20 7842 8104
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