Mitsubishi Electric Mr.Slim MCF-18TN User manual

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FOR USER
PARA EL USUARIO
OPERATING INSTRUCTIONS
MANUAL DE INSTRUCCIONES
Floor And Ceiling-Type Air-Conditioners
MCF-18TN/24TN
HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
SG79A614H01

2
CONTENTS
SAFETY PRECAUTIONS ........................................................................................................................................................ 2
NAME OF EACH PART ............................................................................................................................................................ 4
PREPARATION BEFORE OPERATION .................................................................................................................................. 5
“I FEEL...” AUTO OPERATION ................................................................................................................................................. 6
MANUAL OPERATION (COOL, DRY, FAN) ............................................................................................................................. 7
AIR FLOW VELOCITY AND DIRECTION ADJUSTMENT ...................................................................................................... 8
TIMER OPERATION (ON/OFF TIMER) ................................................................................................................................... 9
WHEN THE AIR CONDITIONER IS NOT GOING TO BE USED FOR A LONG TIME ............................................................ 9
MAINTENANCE ....................................................................................................................................................................... 9
CLEANING THE AIR FILTER/DEODORIZING FILTER (OPTION) ........................................................................................ 10
REPLACEMENT OF THE DEODORIZING FILTER (OPTION)/AIR CLEANING FILTER (OPTION) ..................................... 10
BEFORE CONTACTING THE SERVICE REPRESENTATIVE, CHECK THE FOLLOWING AGAIN...................................... 11
WHEN YOU THINK THAT TROUBLE HAS OCCURRED ...................................................................................................... 11
INSTALLATION, RELOCATION AND INSPECTION .............................................................................................................. 12
SPECIFICATIONS ................................................................................................................................................................. 12
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 these cautionary items shown here are important for safety, be sure to observe them.
Marks and their meanings are as shown below.
Warning: Incorrect handling could cause a serious hazard, such as death, serious injury etc. with a high prob-
ability.
Caution: Incorrect handling could cause a serious hazard depending on the conditions.
Meanings of symbols used in this manual are as shown below.
: Be sure not to do.
: Be sure to follow the instruction.
(Black) : Never insert your finger or a stick, etc.
(Black) : Never step onto the indoor/outdoor unit and do not put anything on them.
(Yellow) : Danger of electric shock. Be careful.
(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 position and Safety device
Enclosure
Enclosure
Air outlet
Air inlet
Warning
■Do not expose your skin directly
to cool air for a long time.
This could damage your health.
■Do not insert your finger or a stick, etc. into the air inlet/air outlet.
■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.
■Repair or relocation should not
be done by the customer.
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.
•This air conditioner is NOT intended for use by children or infirm persons without supervisions.
■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.
■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 in-
door unit off with the remote con-
troller.
•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.

3
Caution
■Do not put a vase or glass on
the indoor unit.
Water dropping into the indoor unit
may deteriorate the insulation,
causing electric shock.
■ 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 operate switches with wet
hands.
This may cause an electric shock.
■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 di-
rect air flow.
This could injure the pet or plant.
■Do not use an insecticide or
flammable spray.
This may cause a fire or deforma-
tion of the cabinet.
■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.
■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
fall down.
■Do not leave the unit on an in-
stallation stand which is dam-
aged.
The unit may fall and this may
cause an injury.
■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 hu-
midity (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.
For installation
Caution
■Earth the unit.
Do not connect the earth to a gas
pipe, water pipe, lightning rod or the
earth of a telephone. If the earthing
is incorrect, it may cause an electric
shock.
■Install an earth leakage breaker
depending on the place where the
air conditioner is to be installed
(humid place, etc.).
If the earth leakage breaker is not
installed, it may cause an electric
shock.
■Do not install the unit where flam-
mable gas could leak.
If gas leak and collect around the
unit, it may cause an explosion.
■Drain should be fully drained.
If the drainage route is incomplete,
water may drop from the unit. This
may wet and damage furniture.
Warning
Consult your dealer for installation of the
air conditioner.
Caution
■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 explo-
sion.
■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 bat-
teries 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.
■Ventilate well in using the unit
with a stove, etc.
An oxygen shortage may occur.
■Do not put a stove, etc. where
they are exposed to direct air
flow.
This may cause imperfect com-
bustion.

4
ON/OFF
FAN
TOO
WARM TOO COOL
VANE
MODE
STOP
START
HR.
MIN.
I FEEL COOL
FAN DRY
AMPM
CLOCK
˚C
AMPM
RESET CLOCK
NAME OF EACH PART
Indoor unit (When installed on the floor)
Outdoor unit
Vertical vane
Horizontal vane
Operation Indicator lamp
Remote control receiving section
Front panel
Air cleaning filter (White bellows type) (OPTION)
Air inlet
Air filter
Deodorizing filter (Gray sponge type) (OPTION)
Remote controller
(When installed on the ceiling)
Operation section
(When the air inlet grille is pulled forward)
Emergency operation switch
Air inlet (back and side)
Piping
Drain hose
Air outlet
Drain outlet
Remote controller
RESET button
Signal transmitting section
Operation display section
ON/OFF (operate/stop) button
Operation select button
Fan speed control button
On-timer button
CLOCK set button
HR. button
MIN. button
(Time set button)
Temperature buttons
Vane control button
Off-timer button
(This diagram shows an overall view.)
Open the front lid.
ON/OFF
TOO
COOL
AMPM
CLOCK
˚C
AMPM
TOO
WARM
12345

5
ON/OFF
FAN
TOO
WARM TOO COOL
VANE
MODE
ECONO COOL
STOP
START
HR.
MIN.
I FEEL COOL
FAN DRY
AMPM
CLOCK
˚C
AMPM
RESET CLOCK
WHEN THE REMOTE CONTROLLER
CANNOT BE USED (EMERGENCY OP-
ERATION)
When the batteries of the remote controller run out or the
remote controller malfunctions, EMERGENCY OPERATION
can be done using the EMERGENCY OPERATION switch.
1Press the EMERGENCY OPERATION switch.
When the EMERGENCY OPERATION switch is
pressed, the unit will operate in test run for 30 minutes
at first and then the operation mode shifts to EMER-
GENCY COOL MODE.
Details of EMERGENCY COOL MODE are as shown below.
However, the temperature control does not work for 30 min-
utes 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
Set temperature 24°C
Fan speed Medium
Horizontal vane Auto
The operation mode is indicated by the Operation Indicator
lamp on the indoor unit as following figures.
Operation Indicator Lamp
■To stop the EMERGENCY COOL MODE, press
the EMERGENCY OPERATION switch again.
Each time the switch is pressed, the operation mode
alternates between the EMERGENCY COOL MODE
and STOP MODE.
Breaker for the air conditioner
■Turn the breaker ON.
Remote controller (How to set the batteries and the current time)
1Remove 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.
2Press the RESET button.
•If the RESET button is not pressed, the remote con-
troller may not operate correctly.
Insert the minus pole of
the batteries first.
Press here using
a thin stick.
PREPARATION BEFORE OPERATION
3Press the CLOCK set button.
4Press the
HR.
and
MIN.
button (TIME set but-
ton) to set the current time.
•Each time the
HR.
button is pressed, the set time is
counted up by 1 hour, and each time the
MIN.
button is
pressed, the set time is counted up by 1 minute.
5Press the CLOCK set button again and close
the front lid.
Press here using
a thin stick.
Handling of the remote controller
•The range that the signal can reach is about 6 m when
the remote controller is pointed at the front of the in-
door unit.
•When a button is pressed, one or two beeps will be
heard from the indoor unit. If no sound is heard, op-
erate again.
•Use the remote controller carefully.
If it is dropped, thrown or it gets wet, the remote con-
troller may not operate.
When installing on a wall, etc.
•Install the remote controller installation case in a po-
sition where the signal reception sound (beep) can
be heard from the indoor unit when the
ON/OFF
button is
pressed.
How to install/remove the remote controller
Installing : Insert the remote controller downward.
Removing : Pull it up.
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, re-
place the batteries with new ones (size AAA).
•Though both alkaline batteries and manganese bat-
teries can be used, alkaline batteries are recom-
mended 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 approach-
ing may be exhausted soon. The recommended us-
able time limit is indicated (month/year) on the bot-
tom 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.
Remote controller
installation case
Operation Indicator Operation Indicator
STOPEMERGENCY COOL

6
ON/OFF
FAN
TOO
WARM TOO COOL
VANE
MODE
ECONO COOL
STOP
START
HR.
MIN.
I FEEL COOL
FAN DRY
AMPM
CLOCK
˚C
AMPM
RESET CLOCK
“I FEEL...”AUTO OPERATION
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
ON/OFF
button.
When the “(I FEEL...)”mode is selected, the air
conditioner is automatically controlled at the optimum
temperature.
To stop operation:
■Press the
ON/OFF
button.
○○○○○○○○○○○○○○○○○○○○○○○
If you feel slightly warm,
■Press the
TOO
WARM
button to lower the tem-
perature.
One press lowers the temperature by about 1°C.
If you feel slightly cool,
■Press the
TOO
COOL
button to raise the tem-
perature.
One press raises the temperature by about 1°C.
When “(I FEEL...)”is not selected, press the
MODE
button until it is set.
Each time the button is pressed, the operation mode is
changed in sequence : (I FEEL...) →(COOL) →
(DRY) →(FAN)
Description of “I FEEL...”mode
Operation state
This shows that the air condi-
tioner is operating to reach the
target temperature. Wait until
the target temperature is ob-
tained.
This shows that the room tem-
perature is approaching the
target temperature.
Indica-
tion
Difference between
target temperature
and room
temperature
About 2°C or
more
About 2°C or
less
Details of operation
According to the room temperature when the operation
starts, the operation mode is automatically set to either
COOL or DRY. 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 tem-
perature changes. If the operation mode does not match
the room condition, select the appropriate operation mode
by pressing the
MODE
button.
Details of auto operation
Note:
When both Operation Indicator lamps are lighting, as
the air conditioner is operating to reach the target tem-
perature, the set temperature may not be changed. In
this case, please wait until the lighting of Operation In-
dicator lamp changes from two to only one and then
change the set temperature.
Room temperature
when started
About 25°C or higher
About 25°C or lower
Operation mode
COOL
DRY
Target temperature
(initial state)
About 24°C
—
Details of display on the indoor unit
The Operation Indicator lamps at the right side of the in-
door unit indicate the operation state.
Operation Indicator lamp
Operation Indicator
Lighted
Not lighted
FAN
VANE
MODE
ECONO COOL
STOP
START
HR.
MIN
I FEEL COOL
FAN DRY

7
ON/OFF
FAN
TOO
WARM TOO COOL
VANE
MODE
ECONO COOL
STOP
START
HR.
MIN.
I FEEL COOL
FAN DRY
AMPM
CLOCK
˚C
AMPM
RESET CLOCK
MANUAL OPERATION (COOL, DRY, FAN)
To select the “COOL”, “DRY”or “FAN”mode:
1Press the
ON/OFF
button.
2Select the operation mode by pressing the
MODE
button.
Each time this button is pressed, the operation mode
is changed in sequence : (I FEEL...) →(COOL)
→(DRY) →(FAN)
To stop operation:
■Press the
ON/OFF
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
ON/OFF
button.
○○○○○○○○○○○○○○○○○○○○○○○
■When the set temperature is to be
changed:
•Press the
TOO
WARM
button to lower the tempera-
ture.
One press lowers the temperature by about 1°C.
•Press the
TOO
COOL
button to raise the tempera-
ture.
One press raises the temperature by about 1°C.
In “DRY”operation
•The temperature control (temperature setting)
cannot be done.
•The room temperature is slightly lowered in
this operation mode.
Note:
When the ambient temperature is too high,
the room temperature may not reach the set
temperature since the unit operates to cool
under high load.
■The details of the display on the indoor
unit are explained on page 6.
“COOL”For effective cooling
1Close the windows and pull down
blinds. Sunlight is reduced and
cooling efficiency increases.
2Paste a heat shield film (generally
available) on the window. Heat en-
tering the room is reduced.
3Block the outdoor unit from direct
sunlight. This saves energy.
CONVENIENT INFORMATION
“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 humid-
ity at which people feel comfortable is 60%-75% RH. in summer, 55%-70% RH. in winter.

8
ON/OFF
FAN
TOO
WARM TOO COOL
VANE
MODE
ECONO COOL
STOP
START
HR.
MIN.
I FEEL COOL
FAN DRY
AMPM
CLOCK
˚C
AMPM
12345
RESET CLOCK
■To change the horizontal direction of the AIR FLOW
AIR FLOW VELOCITY AND DIRECTION ADJUSTMENT
AIR FLOW velocity and direction can be selected
as required. ■To change the AIR FLOW velocity, press the
FAN
button.
Each time the button is pressed, the fan speed is changed
in sequence: (Low) →(Med.) →(High) →
(AUTO)
•Use the (High) notch to cool the room more.
•If the operating sound of the air conditioner disturbs
your sleep, use the (Low) notch.
■To change the AIR FLOW blowing direction
vertically, press the
VANE
button.
Each time the button is pressed, the angle of the hori-
zontal vane is changed in sequence : 1→2→3→4
→5→(SWING) →(AUTO)
SWING OPERATION
Use the swing operation for the air flow to reach all cor-
ners of the room.
Recommended horizontal vane range
Use the (AUTO) position usually.
Use position 1or 2in the COOL or DRY mode when
adjusting to your requirements.
Notes:
•In the cooling operation, when the air conditioner is
operated with setting the horizontal vane to 4 or 5 for
1 hour, the AIR FLOW direction is automatically set to
position 1 to prevent condensed water from dropping.
•Adjust the vertical AIR FLOW direction using the re-
mote controller. If the horizontal vane is moved manu-
ally, it may cause trouble.
For the ceiling suspended unit
•Change the direction of the vertical vane manually.
•The air is blown out horizontally.
AUTO AIR FLOW DIRECTION CONTROL OPERATION
•When the AUTO mode is selected with the
VANE
button, the position of the horizontal vane is automatically set to
correspond to the operation mode for effective operation.
For the floor standing unit
(1) COOL, DRY (2) FAN
For the ceiling suspended unit
(1) COOL, DRY (2) FAN
•The air is blown out upwards.
For the floor standing unit
•Change the direction of the vertical vane manually.
Adjust the vane before operation starts.
Since the horizontal vane moves automatically, your fingers may be caught.
•The air is blown out downwards.
•The air is blown out horizontally.
12345
COOL
DRY
COOL
DRY
5
4
3
2
1

9
ON/OFF
FAN
TOO
WARM TOO COOL
VANE
MODE
ECONO COOL
STOP
START
HR.
MIN.
I FEEL COOL
FAN DRY
AMPM
CLOCK
˚C
AMPM
RESET CLOCK
TIMER OPERATION (ON/OFF TIMER)
It is convenient to set the timer for the time when
you go to bed, when you get home, when you get
up, etc.
TIMER
How to set the ON timer
1Press the
START
button during operation.
Each time the button is pressed, the ON timer mode
alternates between ON and OFF.
2Set the time of the timer using the
HR.
and
MIN.
buttons.
Each time the
HR.
button is pressed, the set time is
counted up by 1 hour; each time the
MIN.
button is
pressed, the set time is counted up by 10 minutes.
To release the ON timer:
■Press the
START
button.
○○○○○○○○○○○○○○○○○○○○○○○
How to set the OFF timer
1Press the
STOP
button during operation.
Each time the button is pressed, the OFF timer mode
alternates between ON and OFF.
2Set the time of the timer using the
HR.
and
MIN.
buttons.
Each time the
HR.
button is pressed, the set time is
counted up by 1 hour; each time the
MIN.
button is
pressed, the set time is counted up by 10 minutes.
To release the OFF timer:
■Press the
STOP
button.
Programming timer operation
The ON timer and the OFF timer can be used in com-
bination. 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 op-
eration cannot be used.
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:
1Perform FAN operation for 3 or 4 hours to
dry the inside of the air conditioner.
2Turn off the breaker.
Caution:
Turn off the breaker when the air conditioner is not go-
ing to be used for a long time.
Dirt may collect and this may cause a fire.
3Remove the batteries from the remote con-
troller.
Caution:
To prevent liquid leakage, take out all batteries when the
remote controller is not going to be used for a long time.
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, deter-
gent and insecticide. The unit may be damaged.
When the air conditioner is to be used
again:
1Clean the air filter and install it in the indoor
unit.
(Refer to page 10 for cleaning instructions.)
2Check that the air inlet and outlet of the in-
door/outdoor unit are not blocked.
3Check that the earth is connected correctly.
Caution:
Earth the unit.
Do not connect the earth to a gas pipe, water pipe, light-
ning rod or the earth of a telephone. If the earthing is
incorrect, it may cause an electric shock.
Clean the filter
before installing.
FAN operation

10
CLEANING THE AIR FILTER/DEODORIZING FILTER
(OPTION)
Cleaning the air filter
(about once every 2 weeks)
1Remove the air filter.
•Pull the air inlet knob forward.
(If there is deodorizing or air cleaning filter (OPTION),
please remove it before cleaning the air filter.)
2Remove dirt from the air filter using a
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 (50°C or more) is used, the filter may be
deformed.
3After washing with water/lukewarm water,
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.
4Install the air filter.
•Set the air inlet knob.
Cleaning the deodorizing filter
(about once every 2 weeks)
1Remove the air filter and the deodorizing fil-
ter together. Then separate the deodorizing
filter (Gray sponge type) from the air filter.
•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.
2Soak the filter together with its frame in luke-
warm water for about 15 minutes.
•If dirt is conspicuous, use a solution of detergent in
lukewarm water.
•If hot water (50°C 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.
3After washing with water/lukewarm water,
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.
4Attach the deodorizing filter to the air filter.
(Place the catch into the hole of the air filter
for the security.)Then install both of them to
the body.
REPLACEMENT OFTHE 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)
1Remove the air filter and the deodorizing fil-
ter together.
2Separate the deodorizing filter (Gray sponge
type) from the air filter.
3Replace a new deodorizing filter and attach
it to the air filter. (Place the catch into the
hole of the air filter for the security.)
4Install the air filter and the deodorizing filter
together.
○○○○○○○○○○○○○○○○○○○○○○○
Deodorizing filter
•Cleaning is necessary about once every 2 weeks. How-
ever, if dirt is conspicuous, clean more often.
•When the color of the filter is not restored even if the
filter is washed as the procedure shown in the left
(Cleaning the deodorizing filter) or when the filter be-
comes black, replace the filter with a new one.
•Standard interval for the filter replacement is about 1
year.
Air cleaning filter replacement
(about once every 4 months)
1Remove the air filter and the air cleaning fil-
ter together.
2Separate the air cleaning filter (White bellows
type) from the air filter.
3Replace a new air cleaning filter and attach
it to the air filter. (Place the catch into the
hole of the air filter for the security.)
4Install the air filter and the air cleaning filter
together.
○○○○○○○○○○○○○○○○○○○○○○○
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 us-
able term is about 4 months. However, if the color of
the filter turns to dark brown, replace the filter at once.
Optional parts Optional parts are available from your local dealer.
Part name Model
Deodorizing filter MAC-1700DF
Air cleaning filter MAC-1200FT
FRONT
FRONT
FRONT
FRONT
FRONT
FRONT