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Contents
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1. Safety Precautions
1. Safety Precautions ...................................................................... 2
1.1. Installation ..................................................................... 2
1.2. During operation ............................................................ 4
1.3. Disposing of the unit ...................................................... 5
2. Introduction ................................................................................. 6
3. Components ................................................................................ 6
3.1. Indoor unit and remote controller ................................... 6
3.2. Outdoor unit ................................................................... 7
4. Operation .................................................................................... 7
4.1. Operation modes ........................................................... 7
4.2. Switching the unit on/off ................................................ 8
4.3. Cooling .......................................................................... 8
4.4. Drying (dehumidifying) ................................................... 9
4.5. Heating .......................................................................... 9
4.6. Automatic (cooling / heating) ....................................... 10
4.7. Selecting a temperature .............................................. 10
4.8. Using the timer ............................................................ 11
4.9. Selecting a fan speed .................................................. 13
4.10.Adjusting vertical airflow direction ............................... 14
4.11.Vertical airflow adjustment ........................................... 14
5. Tips for best results ................................................................... 15
6. Care and cleaning ..................................................................... 15
6.1. Cleaning the filters and the indoor unit ........................ 15
6.2. Care and cleaning ....................................................... 16
6.3. End-of-season ............................................................. 17
6.4. Pre-season checks ...................................................... 17
7. Troubleshooting ........................................................................ 18
8. Specifications ............................................................................ 19
ss
s Since this unit contains rotating parts and parts which
ss
could cause an electric shock,be sure to read all of the
“Safety Precautions” before operating the unit.
ss
s “Safety Precautions” lists important points about safety.
ss
Please be sure to follow them.
Symbols used in the text
Warning:
Describes precautions that should be observed to avoid the risk of
injury or death to the user.
Caution:
Describes precautions that should be observed to prevent damage
to the unit.
Symbols used in the illustrations
: Indicates an action that must be avoided.
: Indicates that important instructions must be followed.
: Indicates a part which must be grounded.
: Indicates that caution should be taken with rotating parts. (This sym-
bol is displayed on the main unit label.) <Color: Yellow>
: Indicates the main switch. (This symbol is displayed on the main
unit label.) <Color: Blue>
Warning:
Carefully read the labels affixed to the main unit.
1.1. Installation
Warning:
• The unit should not be installed by the user. Ask the dealer or an
authorized company to install the unit. If the unit is installed im-
properly, water leakage, electric shock or fire may result.
• Use only accessories authorized by Mitsubishi Electric and ask
your dealer or an authorized company to install them. If accesso-
ries are installed improperly, water leakage, electric shock or fire
may result.
• The Installation Manual details the suggested installation method.
Any structural alteration necessary for installation must comply
with local building code requirements.
• Never repair the unit or transfer it to another site by yourself. If
repair is performed improperly, water leakage, electric shock or
fire may result. If you need to have the unit repaired or moved,
consult your dealer.
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1. Safety Precautions
1.1. Installation
1) Outdoor unit
Warning:
• The outdoor unit must be installed on a stable, level surface, in a
place where there is no accumulation of snow, leaves or rubbish.
• Do not stand on, or place any items on the unit. You may fall
down or the item may fall, causing injury.
Caution:
The outdoor unit should be installed in a location where air and noise
emitted by the unit will not disturb the neighbours.
2) Indoor unit
Warning:
The indoor unit should be securely installed. If the unit is loosely
mounted, it may fall, causing injury.
1.1. Installation
3) Remote controller
Warning:
The remote controller should be installed in such a way that children
cannot play with it.
4) Drain hose
Caution:
Make sure that the drain hose is installed so that drainage can go
ahead smoothly. Incorrect installation may result in water leakage,
causing damage to furniture.
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1. Safety Precautions
1.1. Installation
5) Power line, fuse or circuit breaker
Warning:
• Make sure that the unit is powered by a dedicated line. Other appliances connected to the same line could cause an overload.
• Make sure that there is a main power switch.
• Be sure to adhere to the unit’s voltage and fuse or circuit breaker
ratings. Never use a piece of wire or a fuse with a higher rating
than the one specified.
A Fuse or circuit breaker
B Main power switch
6) Grounding
Caution:
• The unit must be properly grounded. Never connect the grounding wire to a gas pipe, water pipe, lightning conductor or telephone
grounding wire. If the unit is not grounded properly, electric shock
may result.
• Check frequently that the ground wire from the outdoor unit is
properly connected to both the unit’s ground terminal and the
grounding electrode.
C Grounding electrode
1.2. During operation
Caution:
• Do not use any sharp object to push the buttons, as this may
damage the remote controller.
• Do not twist or tug on the remote controller cord as this may damage the remote controller and cause malfunction.
• Never block or cover the indoor or outdoor unit’s intakes or outlets. Tall items of furniture underneath the indoor unit, or bulky
items such as large boxes placed close to the outdoor unit will
reduce the unit’s efficiency.
Warning:
• Do not splash water over the unit and do not touch the unit with
wet hands. An electric shock may result.
• Do not spray combustible gas close to the unit. Fire may result.
• Do not place a gas heater or any other open-flame appliance where
it will be exposed to the air discharged from the unit. Incomplete
combustion may result.
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1. Safety Precautions
1.2. During operation
Warning:
• Do not remove the front panel or the fan guard from the outdoor
unit when it is running. You could be injured if you touch rotating, hot or high-voltage parts.
• Never insert fingers, sticks etc. into the intakes or outlets, otherwise injury may result, since the fan inside the unit rotates at
high speed. Exercise particular care when children are present.
• If you detect odd smells, stop using the unit, turn off the power
switch and consult your dealer. Otherwise, a breakdown, electric
shock or fire may result.
• Do not over-cool. The most suitable inside temperature is one
that is within 5°C of the outside temperature.
• Do not leave handicapped people or infants sitting or standing in
the path of the airflow from the air-conditioner. This could cause
health problems.
Caution:
• Do not direct the airflow at plants or caged pets.
• Ventilate the room frequently. If the unit is operated continuously
in a closed room for a long period of time, the air will become
stale.
1.3. Disposing of the unit
Warning:
When you need to dispose of the unit, consult your dealer. If pipes
are removed incorrectly, refrigerant (fluorocarbon gas) may blow out
and come into contact with your skin, causing injury. Releasing refrigerant into the atmosphere also damages the environment.
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ON/OFF
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STAND BY
DEFROST
CENTRALLY CONTROLLED
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CLOCK
ON OFF
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1Hr.
NOT AVAILABLE
CHECK MODE
FILTER
CHECK
TEST RUN
B
A
ON/OFF
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STAND BY
DEFROST
CENTRALLY CONTROLLED
˚C
CLOCK
ON OFF
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NOT AVAILABLE
CHECK MODE
FILTER
CHECK
TEST RUN
2. Introduction
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3. Components
This air-conditioner unit is designed for maximum efficiency and ease of
use. You can use it to cool, heat or dehumidify a room by making the
appropriate settings on the wall-mounted remote controller. Once you have
made your settings, operating the unit is usually a matter of simply pressing the POWER ON/OFF button.
The automatic cooling/heating mode allows setting of an optimum room
temperature to which the air conditioner automatically adjust the room
temperature.
ss
s After you have read this manual, keep it and the Installation Manual
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in a safe place for easy reference whenever a question arises. If
the unit is going to be operated by another person, make sure
that this manual is given to him or her.
A Indoor unit
B Remote controller
3.1. Indoor unit and remote controller
The indoor unit is mounted into the ceiling of your room and puts out air
(cool, warm or dry) according to the settings you make using the remote
controller mounted on the wall.
A Air intake: Draws air in a room.
B Horizontal air outlet: To be automatically set in the horizontal blowing posi-
tion in either COOL or DRY mode operation.
C Downward air outlet
D Automated vane: Helps circulate air upward and downward or adjusts air-
flow direction.
E Air filter
F Decorative panel
G Remote controller
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