Mitsubishi MSZ09UN User manual

SPLIT-TYPE AIR CONDITIONERS
OPERATING INSTRUCTIONS
MSZ09UN
MSZ12UN
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
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.)
For customers

SPLIT-TYPE AIR CONDITIONERS
OPERATING INSTRUCTIONS
MSZ09UN
MSZ12UN
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
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.)
For customers

2
SAFETY PRECAUTIONS
WARNING
CAUTION
FRONT PANEL ENCLOSURE
AIR OUTLET
ENCLOSURE
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 con-
troller.
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 leak-
ing, 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.
•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,
etc. with a high probability.
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 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 positions and safety devices

2
SAFETY PRECAUTIONS
WARNING
CAUTION
FRONT PANEL ENCLOSURE
AIR OUTLET
ENCLOSURE
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 con-
troller.
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 leak-
ing, 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.
•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,
etc. with a high probability.
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 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 positions and safety devices

3
SAFETY PRECAUTIONS
CAUTION
When the air filter is to be
removed, do not touch
the metal parts of the in-
door 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 operate switches
with wet hands.
•This may cause an electric shock.
Do not clean the air con-
ditioner with water.
•Water may enter the unit and de-
grade the insulation. This may
cause an electric shock.
Do not put a pet or house-
plant where it will be ex-
posed to direct airflow.
•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.
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 put a stove, etc.
where they are exposed
to direct airflow.
•This may cause imperfect com-
bustion.
When the unit is not go-
ing 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 any-
thing on the indoor/out-
door unit.
•This may cause an injury, etc. if
you or something falls down.
Do not leave the unit on
an installation stand
which is damaged.
•The unit may fall and this may
cause an injury.
Do not operate the unit
for a long time in high hu-
midity, 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 un-
stable bench when main-
taining the unit, etc.
•This may cause an injury, etc. if
you fall down.
Replace the 2 batteries
with new ones of same
type.
•Using an old battery together with
a new one may result in heat gen-
eration, leakage or an explosion.
Do not charge or disas-
semble 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.

3
SAFETY PRECAUTIONS
CAUTION
When the air filter is to be
removed, do not touch
the metal parts of the in-
door 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 operate switches
with wet hands.
•This may cause an electric shock.
Do not clean the air con-
ditioner with water.
•Water may enter the unit and de-
grade the insulation. This may
cause an electric shock.
Do not put a pet or house-
plant where it will be ex-
posed to direct airflow.
•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.
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 put a stove, etc.
where they are exposed
to direct airflow.
•This may cause imperfect com-
bustion.
When the unit is not go-
ing 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 any-
thing on the indoor/out-
door unit.
•This may cause an injury, etc. if
you or something falls down.
Do not leave the unit on
an installation stand
which is damaged.
•The unit may fall and this may
cause an injury.
Do not operate the unit
for a long time in high hu-
midity, 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 un-
stable bench when main-
taining the unit, etc.
•This may cause an injury, etc. if
you fall down.
Replace the 2 batteries
with new ones of same
type.
•Using an old battery together with
a new one may result in heat gen-
eration, leakage or an explosion.
Do not charge or disas-
semble 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.

4
Operation Indicator
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.
SAFETY PRECAUTIONS
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 furni-
ture.
NAME OF EACH PART
Outdoor unit
Air inlet (back and side)
Piping
Drainage hose
Air outlet
Drain outlet
Service panel
Indoor unit
Air cleaning filter
(White bellows
type) (OPTION)
Deodorizing filter
(Gray sponge
type) (OPTION)
Air filter
Vertical vane
Operation section
(When the front panel is opened)
Front panel
Air inlet
Remote control
receiving section
Remote
controller
Display section
MSZ09UN MSZ09UN
MSZ12UN MSZ12UN
Horizontal vane
Emergency
operation switch
Emergency
operation switch
Operation
Indicator lamp Receiving section
Operation
Indicator lamp
Receiving
section
MSZ09UN MSZ12UN

4
Operation Indicator
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.
SAFETY PRECAUTIONS
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 furni-
ture.
NAME OF EACH PART
Outdoor unit
Air inlet (back and side)
Piping
Drainage hose
Air outlet
Drain outlet
Service panel
Indoor unit
Air cleaning filter
(White bellows
type) (OPTION)
Deodorizing filter
(Gray sponge
type) (OPTION)
Air filter
Vertical vane
Operation section
(When the front panel is opened)
Front panel
Air inlet
Remote control
receiving section
Remote
controller
Display section
MSZ09UN MSZ09UN
MSZ12UN MSZ12UN
Horizontal vane
Emergency
operation switch
Emergency
operation switch
Operation
Indicator lamp Receiving section
Operation
Indicator lamp
Receiving
section
MSZ09UN MSZ12UN

5
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
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
RESET button
(This diagram shows an overall view.)
Open the front lid.
Signal transmitting section

5
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
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
RESET button
(This diagram shows an overall view.)
Open the front lid.
Signal transmitting section