SPLIT-TYPE AIR CONDITIONERS
OPERATING INSTRUCTIONS
MSZ09UN
MSZ12UN
For customers
Thank you very much for purchasing this Mitsubishi room air conditioner.
• To use this unit correctly and safely, be sure to read this operating instructions before use. Keep this manual carefully for
later reference.
• Be sure to receive a guarantee card from your dealer and check that the purchased data and shop name, etc. are
entered correctly.
• This air conditioner should not be installed by the customer. (Safety and performance functions cannot be assured.)
CONTENTS
SAFETY PRECAUTIONS .................................................................................... 2
NAME OF EACH PART ....................................................................................... 4
PREPARATION BEFORE OPERATION .............................................................. 6
I FEEL... AUTO OPERATION .............................................................................. 7
MANUAL OPERATION (COOL, DRY, HEAT) ...................................................... 8
AIR FLOW VELOCITY AND DIRECTION ADJUSTMENT................................... 9
TIMER OPERATION (ON/OFF TIMER) ............................................................. 10
WHEN THE AIR CONDITIONER IS NOT GOING TO BE USED
FOR A LONG TIME ............................................................................................ 10
MAINTENANCE ................................................................................................. 11
CLEANING THE AIR FILTER AND THE DEODORIZING FILTER (OPTION) ... 11
REPLACEMENT OF THE DEODORIZING FILTER (OPTION)/
AIR CLEANING FILTER (OPTION) ................................................................... 12
BEFORE CONTACTING THE SERVICE REPRESENTATIVE,
CHECK THE FOLLOWING AGAIN .................................................................... 12
WHEN YOU THINK THAT TROUBLE HAS OCCURRED ................................. 13
INSTALLATION, RELOCATION AND INSPECTION ......................................... 14
SAFETY PRECAUTIONS
Since rotating parts and parts which could cause an electric shock are used in this product, be
•
sure to read these “Safety Precautions” before use.
Since the cautionary items shown here are important for safety, be sure to observe them.
•
Marks and their meanings are as shown below.
Incorrect handling could cause a serious hazard, such as death, serious injury,
WARNING
CAUTION
Meanings of symbols used in this manual are as shown below.
(Black) Never insert your finger or stick, etc.
(Black) Never step onto the indoor/outdoor unit and do not put anything on them.
(Yellow) Danger of electric shock, be careful.
etc. with a high probability.
Incorrect handling could cause a serious hazard depending on the conditions.
Be sure not to do.
Be sure to follow the instruction.
(Blue) Be sure to shut off the power.
After reading this manual, keep it together with the installation manual in a handy place for easy
•
reference.
Warning mark positions and safety devices
FRONT PANEL
ENCLOSURE
ENCLOSURE
AIR OUTLET
2
WARNING
This air conditioner is NOT intended for use by children or infirm persons without supervisions.
•
Do not turn the breaker off/on during
operation.
This may cause a fire due to spark, etc.
•
Be sure to turn off the breaker absolutely after
•
switching the indoor unit off with the remote controller.
Do not expose your skin directly to cool
air for a long time.
This could damage your health.
•
When an abnormality (burning smell,
etc.) occurs, stop the air conditioner
and turn off the breaker.
If the unit continues to be operated in an abnormal
•
condition, it may cause a fire, trouble, etc. In this
case, consult your dealer.
Do not insert your finger or a stick, etc.
into the air inlet/outlet.
Since the fan rotates at high speed, this may cause
•
an injury.
Young children should be supervised to ensure that
•
they do not play with the air conditioner.
Repairs or relocation should not be
done by the customer.
If this is done incorrectly, it may cause a fire, an elec-
•
tric shock, or injury from the unit falling, water leaking, etc.
Consult your dealer.
The customer should not install this
unit.
If this is done incorrectly, it may cause a fire, an
•
electric shock, or injury from the unit falling, water
leaking, etc.
Consult your dealer.
SAFETY PRECAUTIONS
CAUTION
When the air filter is to be
removed, do not touch
the metal parts of the indoor unit.
This may cause an injury.
•
When the unit is to be
cleaned, switch it off and
turn off the breaker.
Since the fan rotates at high
•
speed during operation, this may
cause an injury.
Do not clean the air conditioner with water.
Water may enter the unit and de-
•
grade the insulation. This may
cause an electric shock.
Do not put a pet or houseplant where it will be exposed to direct airflow.
This could injure the pet or plant.
•
Ventilate well in using the
unit with a stove, etc.
An oxygen shortage may occur.
•
Do not use the unit for
special purposes.
Do not use this air conditioner to
•
preserve precision devices, food,
animals, plants and art objects.
This may cause deterioration of
quality, etc.
Do not operate switches
with wet hands.
This may cause an electric shock.
•
Do not use an insecticide
or flammable spray.
This may cause a fire or deforma-
•
tion of the cabinet.
Do not put a stove, etc.
where they are exposed
to direct airflow.
This may cause imperfect com-
•
bustion.
When the unit is not going to be used for a long
time, turn off the breaker.
Otherwise, dirt may collect and
•
this may cause a fire.
Do not step or put anything on the indoor/outdoor unit.
This may cause an injury, etc. if
•
you or something falls down.
Do not operate the unit
for a long time in high humidity, e.g. leaving a door
or window open.
In the cooling mode, if the unit is
•
operated in a room with high humidity (80% RH or more) for a long
time, water condensed in the air
conditioner may drop and wet or
damage furniture, etc.
Do not step onto an unstable bench when maintaining the unit, etc.
This may cause an injury, etc. if
•
you fall down.
Do not charge or disassemble the batteries and
do not throw them into a
fire.
This may result in leakage, fire or
•
an explosion.
If liquid from the alkaline
batteries gets onto your
skin or clothes, wash it
well with clean water.
If liquid from the alkaline batter-
•
ies gets into your eyes, wash
them well with clean water and
consult a doctor at once.
Do not leave the unit on
an installation stand
which is damaged.
The unit may fall and this may
•
cause an injury.
Replace the 2 batteries
with new ones of same
type.
Using an old battery together with
•
a new one may result in heat generation, leakage or an explosion.
3
Operation Indicator
SAFETY PRECAUTIONS
For installation
WARNING
Consult your dealer for installation of the air conditioner.
•
CAUTION
Ground the unit.
Do not connect the ground to a gas pipe,
•
water pipe, lightning rod or the ground of
a telephone. If the grounding is incorrect,
it may cause an electric shock.
Do not install the unit where flammable
gas could leak.
If gas leaks and collects around the unit, it may
•
cause an explosion.
If the air conditioner is installed in a high
humidity area or near a water source, a
Ground Fault Interrupt (GFI) circuit
breaker should be installed to protect
against an electric shock.
Drain should be fully drained.
If the drainage route is incomplete, water may drop
•
from the unit. This may wet and damage the furniture.
4
Operation Indicator
NAME OF EACH PART
Indoor unit
MSZ09UN MSZ12UN
Air cleaning filter
(White bellows
type) (OPTION)
Deodorizing filter
(Gray sponge
type) (OPTION)
Air filter
Front panel
Air inlet
Remote control
receiving section
Vertical vane
Horizontal vane
Operation section
(When the front panel is opened)
Remote
controller
Display section
MSZ09UN MSZ09UN
Emergency
operation switch
Operation
Indicator lamp
MSZ12UN MSZ12UN
Emergency
operation switch
Outdoor unit
Air inlet (back and side)
Piping
Drainage hose
Service panel
Air outlet
Receiving section
Operation
Indicator lamp
Receiving
section
Drain outlet
ON/OFF
TOO
COOL
AMPM
CLOCK
AMPM
TOO
WARM
ON/OFF
FAN
TOO
WARM
TOO
COOL
VANE
HEAT
MODE
STOP
START
HR.
MIN.
I FEEL
COOL
DRY
AMPM
CLOCK
AMPM
RESET CLOCK
˚F
NAME OF EACH PART
Remote controller
Signal transmitting section
Operation display section
ON/OFF (operate/
stop) button
Temperature buttons
(This diagram shows an overall view.)
ON/OFF
FAN
TOO
WARM
TOO
COOL
VANE
HEAT
MODE
STOP
START
HR.
MIN.
I FEEL
COOL
DRY
AMPM
CLOCK
AMPM
RESET CLOCK
˚F
Open the front lid.
Fan speed control button
Operation select button
RESET button
Off-timer button
On-timer button
HR.button
MIN.button
(Time set button)
CLOCK set button
Vane control button
5
FAN
VANE
MODE
STOP
START
HR.
MIN.
I FEEL
COOL
DRY
RESET CLOCK
HEAT
PREPARATION BEFORE OPERATION
ON/OFF
HR.
MIN.
HR.
MIN.
Operation
Indicator
Operation
Indicator
Operation
Indicator
Operation IndicatorOperation IndicatorOperation Indicator
Auto restart function
These models are equipped with an auto restart function. If you do not want to use
■
this function, please consult the service representative because the setting of the
unit needs to be changed.
Auto restart function is ...
When the indoor unit is controlled with the remote controller, the operation mode, the set temperature and
the fan speed are stored in the memory. If a power failure occurs or the main power is turned off during
operation, “Auto restart function” sets automatically to start operating in the same mode as the one set with
the remote controller just before the shutoff of the main power. (Refer to page 7 for details.)
Breaker for the air conditioner
Turn the breaker on.
■
Remote controller (How to set the batteries and the current time)
1
2
■ If the RESET button is not pressed, the remote control-
Remove the front lid and insert batteries. Then reattach the front lid.
Insert the minus pole of the batteries first.
Check if the polarity of the batteries is correct.
Insert the minus
pole of the
batteries first.
Press the RESET button.
Press using
a thin stick.
ler may not operate correctly.
3
4
Press the CLOCK set button.
Press using
a thin stick.
Press the
and
(TIME SET button) to set the current
time.
■ Each time the
creases by 1 hour, and each time the
pressed, the set time increases by 1 minute.
5
Press the CLOCK set button again
and close the front lid.
button is pressed, the set time in-
button
button is
6
Handling of the remote controller
ON/OFF
Operation
Indicator
Operation
Indicator
Operation
Indicator
Operation IndicatorOperation IndicatorOperation Indicator
The range that the signal can reach is about
•
20 ft. when the remote controller is pointed at the
front of the indoor unit.
When a button is pressed, one or two beeps will
•
be heard from the indoor unit. If no sound is heard,
operate again.
Use the remote controller carefully.
•
If it is dropped, thrown or it gets wet, the remote
controller may not operate.
When installing on a wall, etc.
Install the remote controller holder in a position
•
where the signal reception sound (beep) can be
heard from the indoor unit when the
pressed.
How to install/remove the remote controller
Installing Insert the remote controller downward.
Removing Pull it up.
button is
When the remote controller cannot
be used (emergency operation)
When the batteries of the remote controller run out or
the remote controller malfunctions, the emergency operation can be done using the EMERGENCY OPERATION switch.
1
Press the EMERGENCY OPERATION switch.
* Each time the EMERGENCY OPERATION
switch is pressed, the unit will operate in order
of EMERGENCY COOL MODE, EMERGENCY
HEAT MODE and STOP MODE.
However, when the EMERGENCY OPERATION switch is once pressed, the unit will operate in test run for 30 minutes and then the operation mode shifts to EMERGENCY MODE.
MSZ09UN MSZ12UN
Remote controller
holder
Dry-cell batteries
Reference for replacing batteries
When the indoor unit does not respond to the signal
from the remote controller, or the display becomes
dim, replace the batteries with new ones (size AAA).
Though both alkaline batteries and manganese
•
batteries can be used, alkaline batteries are recommended because their service life is longer than
that of manganese batteries.
The service life of an alkaline battery is about 1 year.
•
However, a battery which the time limit is approaching may be exhausted soon. The recommended usable time limit is indicated (month/year)
on the bottom of the battery.
Replace the 2 batteries with new ones of the same
•
type.
Do not use rechargeable batteries.
•
To prevent liquid leakage, take out all batteries
•
when the remote controller is not going to be used
for a long time.
Dispose of exhausted batteries in the correct man-
•
ner.
Details of EMERGENCY MODE are as shown below.
However, the temperature control does not work for 30
minutes in test run and the unit is set to continuous
operation. The fan speed is set to High in test run and
shifts to Medium after 30 minutes.
Operation mode COOL HEAT
Set temperature 75 °F 75 °F
Fan speed Medium Medium
Horizontal vane Auto Auto
The operation mode is indicated by the Operation Indicator lamp on the indoor unit as following figures.
Operation Indicator lamp
MSZ09UN
EMERGENCY COOL EMERGENCY HEAT STOP
MSZ12UN
EMERGENCY COOL EMERGENCY HEAT STOP
To stop the emergency operation,
■
press the EMERGENCY OPERATION
switch once (in case of EMERGENCY HEAT MODE) or twice (in
case of EMERGENCY COOL MODE).
ON/OFF
FAN
TOO
WARM
TOO
COOL
VANE
MODE
STOP
START
HR.
MIN.
I FEEL
COOL
DRY
AMPM
CLOCK
˚C
AMPM
HEAT
RESET CLOCK
MODE
FAN
VANE
HEAT
MODE
ECONO COOL
STOP
START
HR.
MIN.
I FEEL
COOL
DRY
I FEEL... AUTO OPERATION
ON/OFF
ON/OFF
TOO
WARM
TOO
COOL
MODE
Operation
Indicator
Operation Indicator
With the “ (I FEEL...)” auto operation mode,
the optimum room condition can be set automatically with a one-touch operation.
To start operation:
•
Press the
■
•
When the “ (I FEEL...)” mode is selected, the air
conditioner is automatically controlled at the optimum
temperature.
To stop operation:
Press the
button.
button.
■
If you feel slightly warm:
•
Press the
■
ture.
One press lowers the temperature by about 2 °F.
If you feel slightly cool:
•
Press the
■
ture.
One press raises the temperature by about 2 °F.
When “ (I FEEL...)” is not selected, press
the
Each time the button is pressed, the operation mode is
changed in sequence:
→
button until it is set.
(HEAT)
button to lower the tempera-
button to raise the tempera-
(I FEEL...) → (COOL) → (DRY)
Description of “I FEEL...” mode
Details of operation
According to the room temperature when the operation starts, the operation mode is automatically set to COOL, DRY or HEAT. However, when
operation is started again within 2 hours after it is stopped, the same
operation mode before the operation is stopped is selected. The operation mode selected first is not changed even if the room temperature
changes. If the operation mode does not match the room condition, select the appropriate operation mode by pressing the
Details of auto operation
Room temperature Operation mode Target temperature
when started (initial state)
About 77 °F or higher COOL About 75 °F
About 77 °F - 73 °FDRY —
About 73 °F or lower HEAT About 79 °F
button.
Room temperature:
About 77 °F or higher
→ COOL
About 77 °F - 73 °F→ DRY
About 73 °F or lower
→ HEAT
NOTE
Operation
Indicator
Operation Indicator
COOL:
When the room temperature is 4 °F higher than the set temperature, the set temperature may not be changed
since the air conditioner is operating to reach the target (set) temperature. In this case, please wait until
the room temperature drops to within 4 °F of the set temperature and then change the set temperature.
HEAT: When the room temperature is 4 °F lower than the set temperature, the set temperature may not be
changed since the air conditioner is operating to reach the target (set) temperature. In this case,
please wait until the room temperature rises to within 4 °F of the set temperature and then change the
set temperature.
Details of display on the indoor unit
The operation indicator at the right side of the indoor unit indicates
the operation state.
MSZ09UN MSZ12UN
Lighted
Not lighted
Operation indicator lamp
MSZ09UN
Indication
This shows that the air conditioner is operating to reach the
target temperature. Please wait until the target temperature
is obtained.
This shows that the room temperature is approaching the
target temperature.
MSZ12UN
Indication
This shows that the air conditioner is operating to reach the
target temperature. Please wait until the target temperature
is obtained.
This shows that the room temperature is approaching the
target temperature.
Operation state
Operation state
Lighted
Not lighted
Difference between target
temperature and room temperature
About 4 °F or more
About 4 °F or less
Difference between target
temperature and room temperature
About 4 °F or more
About 4 °F or less
Description of “AUTO RESTART FUNCTION”
■ These units are equipped with an auto restart function. When the main power is turned on, the air conditioner will start
operation automatically in the same mode as the one set with the remote controller before the shutoff of the main power.
■ If the unit was set to off with the remote controller before the shutoff of the main power, it will remain stopped even after
the main power is turned on.
■ If the unit was in the emergency operation before the shutoff of the main power, it will start operation, when main power
comes on, in the same mode as the one set with the remote controller before the emergency operation.
■ If the unit is operated in “I FEEL ...” mode before power failure, the operation is not stored in the memory. In “I FEEL ...”
mode, the operation is decided by the initial room temperature at (re)start.
■ Since the air conditioner has been shipped from the factory with the COOL mode saved in the memory for auto restart
function, it starts cooling operation when the user turns on the main power for the first time after installation.
7
ON/OFF
FAN
TOO
WARM
TOO
COOL
VANE
MODE
STOP
START
HR.
MIN.
I FEEL
COOL
DRY
AMPM
CLOCK
˚F
AMPM
HEAT
RESET CLOCK
MANUAL OPERATION (COOL, DRY, HEAT)
ON/OFF
MODE
ON/OFF
ON/OFF
TOO
WARM
TOO
COOL
To select the COOL, DRY or HEAT mode
1
2
Press the
Select the operation mode by pressing the
button.
Each time this button is pressed, the operation mode
is changed in sequence:
→
(DRY) → (HEAT)
button.
(I FEEL...) → (COOL)
To stop operation:
Press the
button.
■
After the operation mode is set once, the operation
starts in the same mode as the one set previously
from the next time by simply pressing the
■
■
When the set temperature is to be changed:
■ Press the
press lowers the temperature by about 2 °F.
■ Press the
press raises the temperature by about 2 °F.
In DRY operation
■ The temperature control (temperature setting) cannot be done.
■ The room temperature is slightly lowered in this
operation mode.
The details of the display on the indoor unit
are explained on page 7.
button to lower the temperature. One
button to raise the temperature. One
button.
8
NOTE
When the ambient temperature is too high, the room temperature may not reach the set temperature since the unit
operates to cool the room under a high load.
CONVENIENT INFORMATION
COOL For effective cooling
1 Close the windows and pull
down blinds. Sunshine is reduced and cooling efficiency
increases.
HEAT Comfortable warmth depends on the temperature difference between the indoor and
the outdoor.
It is recommended that the set temperature in the heating operation does not differ from the external temperature too much. Though there is a regional difference, as a reference, a set temperature between about
71 °F and 75 °F would be suitable.
DRY The humidity at which people feel comfortable
When air contains too much moisture, people feel uncomfortable. Humidity is related to temperature and
wind. The humidity at which people feel comfortable is 60 % - 75 % RH in summer, 55 % - 70 % RH in
winter.
2 Paste a heat shield film (gen-
erally available) on the window.
Heat entering the room is reduced.
3 Block the outdoor unit from di-
rect sunlight. This saves energy.
Description of “AUTO RESTART FUNCTION”
Refer to page 7.
ON/OFF
FAN
TOO
WARM
TOO
COOL
VANE
MODE
STOP
START
HR.
MIN.
I FEEL
COOL
DRY
AMPM
CLOCK
˚C
AMPM
HEAT
RESET CLOCK
VANE
FAN
VANE
1
2
3
4
5
AIR FLOW VELOCITY AND DIRECTION ADJUSTMENT
AIR FLOW velocity and direction can be selected
as required.
To change the AIR FLOW velocity, press
■
the
Each time the button is pressed, the fan speed is
changed in sequence: (Low) → (Med.) → (High)
→
Use the (High) notch to cool/heat the room more.
•
If the operating sound of the air conditioner disturbs your
•
sleep, use the
button.
(AUTO)
(Low) notch.
To change the AIR FLOW blowing direc-
■
tion vertically, press the
Each time the button is pressed, the angle of the horizontal vane is changed in sequence:
(3) → (4) → (5) → (SWING) → (AUTO)
button.
(1) → (2) →
SWING OPERATION
Use the swing operation for the air flow to reach all corners of the room.
Recommended horizontal
vane range
Use the (AUTO) position usually.
Use position
COOL or DRY mode and use positions
when adjusting to your requirements.
(1) or (2) in the
(3) to (5) in the HEAT mode
COOL
DRY
HEAT
NOTE
■ In the cooling operation, when the air conditioner is operated with setting the horizontal vane to
1 hour, the AIR FLOW direction is automatically set to
horizontal to prevent condensed water from dropping.
■ Adjust the vertical AIR FLOW direction using the remote
controller. If the horizontal vane is moved manually, it
may cause trouble.
■ In the heating operation, if the air flow temperature is
too low or when defrosting is being done, the horizontal
vane position is set to
(1).
(4) or
(5) for
Auto air flow direction control operation
VANE
■ When the AUTO mode is selected with the
to correspond to the operation mode for effective operation.
(1) HEAT
When the air flow temperature is too low, When the air flow temperature rises,
the air is blown out horizontally. the air is blown out downwards.
(2) COOL, DRY
The air is blown out horizontally.
button, the position of the horizontal vane is automatically set
To change the horizontal direction of the air flow, move the vertical vane manu-
■
ally.
Adjust the vane before operation starts.
Since the horizontal vane moves automatically, your fingers may be caught.
9
ON/OFF
FAN
TOO
WARM
TOO
COOL
VANE
MODE
STOP
START
HR.
MIN.
I FEEL
COOL
DRY
AMPM
CLOCK
˚C
AMPM
HEAT
RESET CLOCK
START
HR.
MIN.
HR.
MIN.
START
STOP
HR.
MIN.
HR.
MIN.
STOP
TIMER
TIMER OPERATION (ON/OFF TIMER)
It is convenient to set the timer when you go to
bed, when you get home, when you get up, etc.
How to set the ON timer
1
2
Press the
Each time the button is pressed, the ON timer mode
alternates between ON and OFF.
Set the time of the timer using the
and
Each time the
creases by 1 hour; each time the
pressed, the set time increases by 10 minutes.
button during operation.
buttons.
button is pressed, the set time in-
button is
To release the ON timer:
Press the
button.
■
How to set the OFF timer
1
2
Press the
Each time the button is pressed, the OFF timer mode
alternates between ON and OFF.
Set the time of the timer using the
and
Each time the
creases by 1 hour; each time the
pressed, the set time increases by 10 minutes.
button during operation.
buttons.
button is pressed, the set time in-
button is
To release the OFF timer:
Press the
button.
■
Programming timer operation
The ON timer and the OFF timer can be used in combination.
The timer of the set time that is reached first will operate first.
(“
” mark indicates the order of timer operations.)
■ If the current time has not been set, the timer operation cannot be used.
NOTE
If the main power is turned off or a power failure occurs
while AUTO START/STOP timer is active, the timer setting
is cancelled. As these models are equipped with an auto
restart function, the air conditioner should start operating
at the same time that power is restored.
10
WHEN THE AIR CONDITIONER IS NOT GOING
TO BE USED FOR A LONG TIME
When it is not going to be used for a
long time:
Perform the FAN operation for 3 or 4 hours
1
to dry the inside of the air conditioner.
• To perform FAN operation, set the remote controller to
the highest temperature in the MANUAL COOL mode.
(Refer to page 8.)
“Cool”
Manual
operation
Turn off the breaker.
2
When the air conditioner is to be
used again:
Clean the air filter and install it in the in-
1
door unit.
(Refer to page 11 for cleaning instructions.)
Clean the
filter before
installing.
Check that the air inlet and outlet of the
2
indoor/outdoor units are not blocked.
CAUTION
Turn off the breaker when the air conditioner is not
going to be used for a long time.
Dirt may collect and this may cause a fire.
Remove the batteries from the remote con-
3
troller.
CAUTION
To prevent liquid leakage, take out all batteries when
the remote controller is not going to be used for a
long time.
Check that the ground is connected correctly.
3
CAUTION
Ground the unit.
Do not connect the ground to a gas pipe, water pipe,
lightning rod or the ground of a telephone. If the grounding is incorrect, it may cause an electric shock.
MAINTENANCE
Before starting maintenance
Turn off the breaker.
■
CAUTION
When the unit is to be cleaned, switch it off and turn
off the breaker. Since the fan rotates at high speed
during operation, it may cause an injury.
Cleaning the indoor unit
Clean the unit using a soft dry cloth.
■
Do not use gasoline, benzine, polishing powder, detergent and insecticide. The unit may be damaged.
CLEANING THE AIR FILTER AND
THE DEODORIZING FILTER (OPTION)
Do not open the front panel up past the level position in order to prevent it from being damaged.
Cleaning the air filter
(about once every 2 weeks)
Remove the air filter.
1
Open the front
panel, then
remove/replace
the filter.
Remove.
CAUTION
When the air filter is to be removed, do not touch
the metal parts of the indoor unit.
This may cause an injury.
Remove dirt from the air filter using a
2
vacuum cleaner or by washing the filter
with water.
■ If dirt is conspicuous, wash the filter with a
solution of detergent in lukewarm water.
■ If hot water (120°F or more) is used, the filter
may be deformed.
After washing with water/lukewarm water,
3
dry the air filter well in the shade.
■ Do not expose the air filter to direct sunlight
or heat from a fire when drying it.
Air filter
Cleaning the deodorizing filter
(about once every 2 weeks)
Remove the air filter, and then remove the
1
deodorizing filter (Gray sponge type).
■ The deodorizing filter is harmless to people.
However, to keep its effectiveness, be sure
to hold the frame and not to touch the surface of the filter with your hand.
Deodorizing filter
Soak the filter together with its frame in
2
lukewarm water for about 15 minutes.
■ If the dirt is conspicuous, use a solution of
detergent in lukewarm water.
■ If hot water (120°F or more) is used, the filter
may be deformed.
■ Do not use a scrubbing brush or sponge. This
may damage the surface of the filter.
■ Do not use a chlorine detergent.
After washing with water/lukewarm water,
3
dry the deodorizing filter well in the shade.
■ Do not expose the deodorizing filter to direct
sunlight or heat from a fire when drying it.
Install the air filter.
4
Install.
Install the deodorizing filter, and then in-
4
stall the air filter.
Install.
11
REPLACEMENT OF THE DEODORIZING FILTER
(OPTION)/AIR CLEANING FILTER (OPTION)
When the capacity is lowered because of dirt, etc., it is necessary to replace the deodorizing filter/air cleaning filter.
Deodorizing filter replacement
(about once a year)
Remove the air filter.
1
Air filter
Remove the deodorizing filter (Gray
2
sponge type).
Deodorizing filter
Install a new deodorizing filter.
3
Install the air filter and securely close the
4
front panel.
Air cleaning filter replacement
(about once every 4 months)
Remove the air filter.
1
Air filter
Remove the air cleaning filter (White bel-
2
lows type).
Air cleaning filter
Install a new air cleaning filter.
3
Install the air filter and securely close the
4
front panel.
Deodorizing filter
■ Cleaning is necessary about once every 2 weeks.
However, if dirt is conspicuous, clean more often.
■ When the color the filter is not restored even if the
filter is washed as the procedure shown on page 11
or when the filter becomes black, replace the filter
with a new one.
■ Standard interval for filter replacement is about 1
year.
Optional parts Optional parts are available from your local dealer.
Model
Name of parts
DEODORIZING FILTER MAC-1800DF MAC-1600DF
AIR CLEANING FILTER MAC-1300FT MAC-1100FT
MSZ09UN MSZ12UN
Air cleaning filter
■ If the air cleaning filter is clogged, it may lower the
unit’s capacity or cause condensation at the air outlet.
■ The air cleaning filter is disposable. The standard
usable term is about 4 months. However, if the color
of the filter turns to dark brown, replace the filter at
once.
12
BEFORE CONTACTING THE SERVICE REPRESENTATIVE, CHECK THE FOLLOWING AGAIN
The air conditioner
cannot be operated.
dd
d
dd
Check the following.
Is the breaker turned
1
on?
Isn’t the fuse blown?
2
Isn’t the ON-timer set?
3
The room cannot be
cooled or heated
sufficiently.
dd
d
dd
Check the following.
Is the temperature set-
1
ting correct?
Isn’t the filter dirty?
2
Isn’t the outlet of the out-
3
door unit blocked?
Display of the remote controller does not appear (1,
2). The remote control signal cannot be received if
the remote controller is
not operated near the air
conditioner (1).
dd
d
dd
Check the following.
Aren’t the batteries ex-
1
hausted?
Is the polarity (+, -) of the
2
batteries correct?
When a power failure occurs.
dd
d
dd
Check the following after
the restoration of the power.
Even if the above items are checked, when the air conditioner does not
recover from the trouble, stop using the air conditioner and consult your
dealer.
In the following cases, stop operation and consult your dealer.
■ The remote control signal may
not be received in a room where
an electronic ON/OFF type fluorescent lamp (inverter-type fluorescent lamp, etc.) is used.
■ In the region where the electric
wave is weak, when the air conditioner is operated, noise may
be generated in radio reception.
If the air conditioner had operated before the power failure, as these models are equipped with an auto restart
function, the air conditioner should
start operating again. (Refer to Description of “AUTO RESTART FUNCTION” on page 7.)
Does the air conditioner
1
start operating again?
■ When thunder is heard, stop operation and turn off the breaker.
Otherwise, the electrical parts
may be damaged.
WHEN YOU THINK THAT TROUBLE HAS OCCURRED
The air conditioner
cannot be operated
for about 3 minutes
when restarted.
Cracking sound is
heard.
The room smells
strange.
The fan stops
during the DRY
operation.
Question
Answer (not a malfunction)
■ This protects the air conditioner according to instructions from the microprocessor. Please wait.
■ This sound is generated by the expansion/contraction
of the front panel, etc. due to change in temperature.
■ The air conditioner sucks in an odor adhering to the
wall, carpet, furniture, cloth, etc. and blows it out with
the air.
■ In DRY operation, the unit operates using the same
refrigerant circuit as in COOL operation. DRY operation time has to be reduced in order to lower humidity
without much room temperature decreasing. So the
compressor sometimes stops, and at the same time
the indoor fan stops. This prevents water condensed
on the heat exchanger from evaporating again.
The sound of water
flowing is heard.
The sound as
burbling is heard.
The room cannot be
cooled sufficiently.
■ This is the sound of refrigerant flowing inside the air
conditioner.
■ This is the sound of condensed water flowing in the
heat exchanger.
■ This is the sound of the heat exchanger defrosting.
■ This sound is heard when the outside air is absorbed
from the drain hose in turning on the range hood or
the ventilation fan and that makes water flowing in the
drain hose spout out.
This sound is also heard when the outside air blows
into the drain hose in case the outside wind is strong.
■ When a ventilation fan or a gas cooker is used in a
room, the cooling load increases, resulting in an insufficient cooling effect.
■ When the outside air temperature is high, the cooling
effect may not be sufficient.
Question
Answer (not a malfunction)
Mechanical sound is
heard from the
indoor unit.
The air flow
direction changes
during operation.
Water leaks from the
outdoor unit.
Air does not blow
out soon in the
heating operation.
The operation is
stopped for about
10 minutes in the
heating operation.
■ This is the switching sound in turning on/off the fan or
the compressor.
■ When the air conditioner is operated in COOL or DRY
mode, if the operation continues with air blowing down
for 1 hour, the direction of the air flow is automatically set
to horizontal to prevent condensed water from dropping.
■ In the heating operation, if the air flow temperature is
too low or when defrosting is being done, the horizontal vane position is automatically set to horizontal.
■ During COOL and DRY operations, pipe or pipe connecting sections are cooled and this causes water to
condense.
■ In the heating operation, the defrosting operation makes
water frozen on the outdoor unit melt and drip down.
■ In the heating operation, water condensed on the heat
exchanger drips down.
■ Please wait as the air conditioner is preparing to blow
out warm air.
■ Defrosting of the outdoor unit is being done (Defrosting operation).
Since this is completed in 10 minutes, please wait.
(When the external temperature is too low and humidity is too high, frost is formed.)
Hissing sound is
sometimes heard.
The air conditioner
starts the operation
only with the main
power turned on,
though you do not operate the unit with the
remote controller.
■ This is the sound when the flow of refrigerant inside
the air conditioner is switched.
■ These models are equipped with an auto restart function. When the main power is turned off without stopping the air conditioner with the remote controller and
is turned on again, the air conditioner will start operation automatically in the same mode as the one set
with the remote controller just before the shutoff of
the main power.
13
INSTALLATION, RELOCATION AND INSPECTION
Installation place
Avoid installing the air conditioner in the following
places.
■ Where flammable gas could leak.
CAUTION
Do not install the unit where flammable gas could
leak.
If gas leaks and collects around the unit, it may cause
an explosion.
■ Where there is much machine oil.
■ Salty places such as the seaside.
■ Where sulfide gas is generated such as a hot spring.
■ Where oil is splashed or where the area is filled with
oily smoke.
To prevent the effects
of a fluorescent lamp,
keep as far apart as
possible.
Radio
3.3 ft.
or more
Inverter-type
fluorescent lamp
Keep a space
to prevent the
picture
distortion or
the noise.
WARNING
If the air conditioner operates but does not cool or heat (depending on model) the room, consult your dealer
since there may be a refrigerant leak. Be sure to ask the service representative whether there is refrigerant
leakage or not when repairs are carried out.
The refrigerant charged in the air conditioner is safe. Refrigerant normally does not leak, however, if refrigerant
gas leaks indoors, and comes into contact with the fire of a fan heater, space heater, stove, etc., harmful substances will be generated.
Electrical work
■ Provide an exclusive circuit for the power supply of the air conditioner.
■ Be sure to observe the breaker capacity.
■ Use the correct power (voltage and frequency) indicated on the unit to operate the air conditioner and use only
fuses or breakers with specified capacity. Do not use pieces of wire instead of fuses.
Keep the outdoor unit 9.8 ft. or
more away from the antennas
of TV sets or radios.
Wellventilated
dry place
4 in. or
more
9.8 ft.
or more
20 in. or
moreTV
wall, etc.
WARNING
■ The customer should not install this unit.
If installation is done incorrectly, it may cause a fire, an electric shock, or injury from the unit falling, water
leaking, etc.
■ The unit should be installed by licensed contractor according to local code requirements.
CAUTION
■ Ground the unit.
Do not connect the ground to a gas pipe, water pipe, lightning rod or the ground of a telephone. If the grounding is incorrect, it may cause an electric shock.
■ If the air conditioner is installed in a high humidity area or near a water source, a Ground Fault Interrupt (GFI)
circuit breaker should be installed to protect against an electric shock.
14
Inspection and maintenance
■ When the air conditioner is used for several seasons, the capacity may be lowered due to dirt inside the unit.
■ Depending on the condition, an odor may be generated or dehumidified water may not drain out smoothly due to
dirt, dust, etc.
■ It is recommended that the unit be inspected and maintained (charged) by specialist in addition to normal maintenance. Consult your dealer.
Operating sound considerations
■ Do not put an object around the air outlet of the outdoor unit. This may lower the capacity or increase the volume
of the operating sound.
■ If an abnormal sound is heard during operation, consult your dealer.
Relocation
■ When the air conditioner is to be removed or re-installed because of rebuilding, moving, etc., special techniques
and work are required.
WARNING
Repairs or relocation should not be done by the customer.
If this is done incorrectly, it may cause a fire, an electric shock, or an injury from the unit falling, water leaking,
etc. Consult your dealer.
Disposal
To dispose of this product, consult your dealer.
If you have any questions, consult your dealer.
NOTE
3400 Lawrenceville Suwanee Road
Toll Free: 800-433-4822
●
Toll Free Fax: 800-889-9904
www.mrslim.com
Specifications are subject to change without notice.
●
Suwanee, Georgia 30024
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