SPLIT-TYPE AIR CONDITIONERS
OPERATING INSTRUCTIONS
INDOOR UNIT
MSZ-A18YV
MSZ-A24YV
MSZ-A26YV
MSZ-A30YV
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
date and shop name, etc. are entered correctly.
• This air conditioner should not be installed by the customer. (Safety and perform-
ance functions cannot be assured.)
SAFETY PRECAUTIONS
NAME OF EACH PART
Indoor unit
CAUTION
Do not operate the unit at low outside temperature (less than -10°C) in the cooling mode.
•
In the cooling mode, if the unit is operated at low outside temperature (less than -10°C), water con-
densed in the air conditioner may drop and wet or damage furniture, etc.
Air cleaning filter
(White bellows type)
Front panel
Air inlet
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.
Power supply cord
Do not put a stove, etc. where they are exposed to direct airflow.
This may cause imperfect combustion.
Catechin air filter
•
When the unit is to be cleaned, switch it off and disconnect the power supply plug and/or turn off the
breaker.
Remote control
receiving section
•
Since the fan rotates at high speed during operation, this may cause an injury.
Vertical vane
When the unit is not going to be used for a long time, disconnect the power supply plug and/or turn
off the breaker.
Horizontal vane
•
Otherwise, dirt may collect and this may cause a fire.
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.
If liquid from the batteries gets onto your skin or clothes, wash it well with clean water.
Remote controller
•
•
If liquid from the batteries gets into your eyes, wash them well with clean water and consult a doctor at
once.
Operation section
Display section
(When the front panel is opened)
Ventilate well in using the unit with a stove, etc.
An oxygen shortage may occur.
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 degrade the insulation. This may cause an electric shock.
Do not step or put anything on the indoor/outdoor unit.
This may cause an injury, etc. if you or something falls down.
Operation
Indicator lamp
•
•
Emergency operation switch
•
Remote control
receiving section
•
For installation
WARNING
Consult your dealer for installation of the air conditioner.
Outdoor unit
•
CAUTION
Do not install the unit where flammable gas could leak.
Air inlet (back and side)
•
If gas leaks and collects around the unit, it may cause an explosion.
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.
Piping
Install an earth leakage breaker depending on the place where the air conditioner is to be installed
(humid places, etc.).
Drainage hose
•
If the earth leakage breaker is not installed, it may cause 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.
•
Air outlet
Drain outlet
3
NAME OF EACH PART
PREPARATION BEFORE OPERATION
Remote controller
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.
I
Signal transmitting section
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 6 for details.)
˚C
Operation display section
CLOCK
AMPM
AMPM
Indoor unit
ON/OFF (operate/
stop) button
TOO
WARM
TOO
ON/OFF
COOL
Insert the power supply plug into the power outlet and/or turn the breaker on.
I
Temperature buttons
WARNING:
Remove dirt from the power supply plug and insert the plug securely.
If dirt adheres to the plug or insertion is incomplete, it may cause a fire or an electric shock.
Open the front lid.
(This diagram shows an overall view.)
AMPM
TOO
TOO
ON/OFF
WARM
COOL
VANE button
(Horizontal vane button)
Fan speed control button
Off-timer button
FAN
STOP
I
FEEL COOL
VANE
START
HR.
HEAT DRY
On-timer button
MODE WIDE VANE
HR.button
MIN.button
(Time set buttons)
Operation select button
ECONO COOL button
ECONO COOL
LONG
MIN.
RESET CLOCK
CLOCK set button
LONG button
WIDE VANE button
(Vertical vane button)
RESET button
4
PREPARATION BEFORE OPERATION
Handling of the remote controller
Remote controller
When the remote controller cannot be used (emergency operation)
•
•
•
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 the batteries of the remote controller run out or the remote controller malfunctions, the emergency operation
can be done using the EMERGENCY OPERATION switch.
How to set the batteries and the current
time
1 Press the EMERGENCY OPERATION switch.
2 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).
1 Remove the front lid and insert batteries.
•
Each time the EMERGENCY OPERATION switch is
pressed, the unit will operate in order of EMER-
GENCY COOL MODE, EMERGENCY HEAT MODE
and STOP MODE.
Then reattach the front lid.
Insert the minus pole of the batteries first.
Check if the polarity of the batteries is correct.
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.
When installing on a wall, etc.
•
Install the remote controller holder in a position where
the signal reception sound (beep) can be heard from
ON/OFF
the indoor unit when the
button is pressed.
Insert the minus pole
of the batteries first.
How to install/remove the remote controller
Installing :Insert the remote controller downward.
Removing :Pull it up.
2 Press the RESET button.
Press using a
thin stick.
Remote control-
ler holder
•
Details of EMERGENCY MODE are as shown be-
low. 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 min-
utes.
Dry-cell batteries
I Reference for replacing batteries
Replace the batteries with new AAA alkaline batteries
in the following cases:
•
If the RESET button is not pressed, the remote con-
troller may not operate correctly.
· When the indoor unit does not respond to the remote
control signal.
· When the display on the remote controller becomes
dim.
· When a button of the remote controller is pressed, all
displays appear on the screen, and then disappear
immediately.
Do not use manganese batteries. The remote controller
could malfunction.
3 Press the CLOCK set button.
Operation mode
Set temperature
Fan speed
COOL
24°C
HEAT
24°C
Press using a
thin stick.
Medium
Auto
Medium
Auto
Horizontal vane
Vertical vane
Front
Front
HR.
MIN.
4 Press the
and
buttons (TIME SET
•
The operation mode is indicated by the Operation
Indicator lamp on the indoor unit as following fig-
ure.
•
The service life of an alkaline battery is about 1 year.
However, a battery whose time limit is approaching
may be exhausted soon. The recommended usable
time limit is indicated (month/year) on the bottom of
the battery.
To prevent liquid leakage, take out all batteries when
the remote controller is not going to be used for a
long time.
buttons) to set the current time.
FAN
STOP
START
HR.
I
FEEL COOL
Operation Indicator lamp
VANE
HEAT DRY
•
EMERGENCY COOL EMERGENCY HEAT
STOP
MODE WIDE VANE
ECONO COOL
LONG
MIN.
Operation Indicator
Operation Indicator
Operation Indicator
CAUTION:
RESET CLOCK
If liquid from the batteries gets onto your skin or
clothes, wash it well with clean water.
If liquid from the batteries gets into your eyes, wash
them well with clean water and consult a doctor at
once.
HR.
•
Each time the
increases by 1 hour, and each time the
is pressed, the set time increases by 1 minute.
button is pressed, the set time
MIN.
button
•
•
Do not use rechargeable batteries.
Replace the 2 batteries with new ones of the same
type.
5 Press the CLOCK set button again and close
the front lid.
•
Dispose of exhausted batteries in the correct man-
ner.
5
I FEEL... AUTO OPERATION
With the “ (I FEEL...)” auto operation mode, the optimum room condition can be set automatically
with a one-touch operation.
Description of “I FEEL...” mode
Details of operation
To start 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
button.
ON/OFF
Press the
button.
I
MODE
CLOCK
AMPM
When the “
(I FEEL...)” mode is selected, the air conditioner is automatically
controlled at the optimum temperature.
Details of auto operation
TOO
TOO
ON/OFF
To stop operation:
WARM
COOL
ON/OFF
Room temperature
when started
Operation mode Target temperature
(initial state)
Press the
button.
I
About 25°C or higher
About 25°C - 23°C
About 23°C or lower
COOL
DRY
About 24°C
—
FAN
STOP
I
FEEL COOL
VANE
START
HR.
HEAT DRY
HEAT
About 26°C
If you feel slightly warm:
TOO
MODE WIDE VANE
WARM
NOTE:
Press the
button to lower the temperature.
I
COOL: When the room temperature is 2°C 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 2°C of the set temperature and then change the set
temperature.
HEAT: When the room temperature is 2°C 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 2°C of the set temperature and then change the set
temperature.
ECONO COOL
LONG
MIN.
One press lowers the temperature by about 1°C.
RESET CLOCK
If you feel slightly cool:
TOO
COOL
Press the
button to raise the temperature.
I
One press raises the temperature by about 1°C.
MODE
When “
button until it is set.
(I FEEL...)” is not selected, press the
FAN
VANE
STOP
START
HR.
Details of display on the indoor unit
I FEEL COOL
The operation indicator at the right side of the indoor unit indicates the operation state.
Lighted
Each time the button is pressed, the operation mode is changed
in sequence:
(HEAT)
HEAT
DRY
(I FEEL...) →
(COOL) → (DRY) →
Blinking
Operation Indicator
WIDE VANE
LONG
MODE
Not lighted
Operation indicator lamp
MIN.
Difference between target
temperature and room temperature
Indication
Operation state
Description of “AUTO RESTART FUNCTION”
This shows that the air conditioner is operating to reach the
target temperature. Please wait until the target temperature
is obtained.
•
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.
About 2°C or more
•
•
•
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.
This shows that the room temperature is approaching the
target temperature.
About 2°C or less
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...” before power failure, the operation mode (COOL, DRY or HEAT) is not stored in the
memory. When the main power is turned on, the unit decides the operation mode by the initial room temperature at
restart and starts operation again.
(In case of outdoor unit MXZ series only)
Please refer to Information for multi system air conditioner.
(Page 7)
—
6
MANUAL OPERATION (COOL, DRY, HEAT)
AIR FLOW VELOCITY AND DIRECTION ADJUSTMENT
AIR FLOW velocity and direction can be selected as required.
To select the COOL, DRY or HEAT/FAN mode:
FAN
To change the AIR FLOW velocity, press the
button.
ON/OFF
I
1 Press the
button.
Each time the button is pressed, the fan speed is changed in sequence:
˚C
(Low) →
(Med.) →
(High) →
(AUTO)
CLOCK
MODE
AMPM
2 Select the operation mode by pressing the
button.
•
•
Use the
(High) notch to cool/heat the room more.
Each time this button is pressed, the operation mode is changed in sequence:
CLOCK
If the operating sound of the air conditioner disturbs your sleep, use the
(Low) notch.
AMPM
(I FEEL...) →
(COOL) → (DRY) →
(HEAT)
TOO
TOO
ON/OFF
WARM
COOL
To stop operation:
To change the AIR FLOW blowing direction vertically, press the
I
TOO
TOO
VANE
ON/OFF
ON/OFF
WARM
COOL
button.
Press the
button.
I
Each time the button is pressed, the angle of the horizontal vane is changed in
FAN
STOP
After the operation mode is set once, the operation starts in the same mode as
I
FEEL COOL
sequence:
(1) →
(2) →
(3) →
(4) →
(5)→ (SWING)→
(AUTO)
ON/OFF
the one set previously from the next time by simply pressing the
button.
VANE
START
HR.
HEAT DRY
FAN
STOP
SWING OPERATION
Use the swing operation for the air flow to reach all corners of the room.
I
FEEL COOL
MODE WIDE VANE
VANE
START
HR.
HEAT DRY
ECONO COOL
LONG
MIN.
Recommended horizontal vane range
MODE WIDE VANE
1
2
Use the
(AUTO) position usually.
(1) or (2) in the COOL or DRY mode
(3) to (5) in the HEAT mode
when adjusting to your requirements.
COOL
DRY
RESET CLOCK
ECONO COOL
LONG
MIN.
Use position
3
and use positions
RESET CLOCK
4
HEAT
5
When the set temperature is to be changed:
I
I
TOO
WARM
•
Press the
button to lower the temperature. One press lowers the temperature by about 1°C.
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.
TOO
COOL
(4) or
(5) for
•
Press the
button to raise the temperature. One press raises the temperature by about 1°C.
In HEAT operation
•
If the air conditioner absorbs too much heat from the air, it may be overloaded. Following a judgement made by the
microprocessor, the fan in the outdoor unit is automatically stopped to protect the air conditioner.
When the outdoor unit’s fan is stopped, frost may form on the outdoor unit, but this is not a problem.
• 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).
Auto air flow direction control operation
In DRY operation
VANE
When the AUTO mode is selected with the
correspond to the operation mode for effective operation.
(1) HEAT:
button, the position of the horizontal vane is automatically set to
•
•
The temperature control (temperature setting) cannot be done.
The room temperature is slightly lowered in this operation mode.
When the air flow temperature is too low, the air is blown out horizontally.
When the air flow temperature rises, the air is blown out downwards.
The details of the display on the indoor unit are explained on page 6.
(2) COOL, DRY: The air is blown out horizontally.
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.
WIDE VANE
To change the AIR FLOW blowing direction horizontally, press the
button.
I
Each time the button is pressed, the angle of the VERTICAL VANE is changed in sequence:
Information for multi system air conditioner (Outdoor unit: MXZ series)
→
→
→
→
(SWING) →
→
Multi system air conditioner (Outdoor unit: MXZ series) can connect two or more indoor units with one outdoor
unit. According to the capacity, two or more units can operate simultaneously.
SWING OPERATION
Use the swing operation for the air flow to reach all corners of the room.
•
When you try to operate two or more indoor units with one outdoor unit simultaneously, one for the cooling and the other
for heating, the operation mode of the indoor unit that operates earlier is selected. The other indoor units that will start the
operation later cannot operate, indicating an operation state. (Refer to the table of Operation Indicator lamp on page 6.)
In this case, please set all the indoor units to the same operation mode.
NOTE:
Horizontal AIR FLOW blowing range
Adjust the horizontal AIR FLOW direction using the re-
mote controller. If the VERTICAL VANE is moved manu-
ally, it may cause trouble.
•
•
When indoor unit starts the operation while the defrosting of outdoor unit is being done, it takes a few minutes (max. 10
minutes) to blow out the warm air.
In the heating operation, the indoor unit that does not operate may get warm or the sound of refrigerant flowing may be
COOL/DRY
heard. This is not a malfunction since the refrigerant continuously flows into the indoor unit that does not operate.
About 100°
Description of “AUTO RESTART FUNCTION”
HEAT
Refer to page 6.
About 150°
7
LONG OPERATION
ECONO COOL OPERATION
Use this operation when you want the air flow to reach a long distance.
Use this operation when you want to be comfortable in COOL mode even with energy saved.
Perform the following operations while the unit is operat-
ing.
Perform the following operations while the unit is operat-
ing in the MANUAL COOL mode.
ECONO COOL
LONG
˚C
˚C
Press the
button.
Press the
button.
I
I
CLOCK
CLOCK
AMPM
AMPM
The fan speed increases.
When the
(ECONO COOL) operation is selected in COOL mode, the air
When the fan speed is set to
speed determined by the room temperature and the set temperature.
In addition, the HORIZONTAL VANE moves to the position for LONG mode.
(AUTO), the fan speed is higher than a fan
conditioner performs swing operation in various cycle according to the tem-
perature of air conditioner.
Also SET TEMPERATURE is automatically set 2°C higher than in COOL mode.
TOO
TOO
TOO
TOO
ON/OFF
ON/OFF
WARM
COOL
WARM
COOL
Mechanism of the LONG operation
To release the ECONO COOL operation:
ECONO COOL
In the following example, the VERTICAL VANE is set to
(front).
FAN
STOP
FAN
STOP
Press the
button again.
I
I
FEEL COOL
I
FEEL COOL
VANE
START
HR.
VANE
START
HR.
COOL/DRY
HEAT
HEAT DRY
HEAT DRY
VANE
LONG
•
•
When the
button or the
button is pressed or the operation mode
MODE WIDE VANE
MODE WIDE VANE
is changed during the ECONO COOL operation, ECONO COOL operation
is released.
ECONO COOL
LONG
MIN.
ECONO COOL
LONG
MIN.
TOO
TOO
WARM
COOL
FAN
RESET CLOCK
RESET CLOCK
The
button, the
or
button and ON/OFF timer (explained below)
are available.
What is “ECONO COOL”?
Swing air flow (change of air flow) makes you feel cooler than constant air flow. So, even though the set temperature is
automatically set 2°C higher, it is possible to perform cooling operation with keeping comfort.As a result, energy can be saved.
Fan speed: Higher
Solid arrow: When the LONG mode is used
Dotted arrow: When the LONG mode is not used
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.
To release the LONG mode:
How to set the ON timer
How to set the OFF timer
LONG
Press the
button again.
I
START
STOP
1 Press the
button during operation.
1 Press the
button during operation.
Each time the button is pressed, the OFF timer mode
alternates between ON and OFF.
Each time the button is pressed, the ON timer mode
alternates between ON and OFF.
I LONG mode is also released in the following ways.
VANE
•
By pressing the
button
HR.
HR.
2 Set the time of the timer using the
and
2 Set the time of the timer using the
and
ECONO COOL
MIN.
MIN.
•
By pressing the
button (only during COOL mode)
buttons.
buttons.
HR.
HR.
I Even when the LONG mode is being used, the air may not reach a long dis-
tance due to the installation location of the air conditioner.
Each time the
button is pressed, the set time in-
Each time the
creases by 1 hour; each time the
the set time increases by 10 minutes.
button is pressed, the set time in-
MIN.
MIN.
creases by 1 hour; each time the
the set time increases by 10 minutes.
button is pressed,
button is pressed,
FAN
In this case, press the
button to set the fan speed to
(High), and
LONG
then press the
button.
To release the OFF timer:
To release the ON timer:
FAN
MODE
WIDE VANE
STOP
I
,
, and
buttons, temperature buttons and the ON/OFF timer
START
Press the
button.
I
Press the
button.
I
are available.
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 starts operating with timer
cancelled at the same time that power is restored.
8
WHEN THE AIR CONDITIONER IS NOT GOING TO BE
USED FOR A LONG TIME
MAINTENANCE
Before starting maintenance
Cleaning the indoor unit
Turn off the breaker and/or disconnect the
power supply plug.
Clean the unit using a soft dry cloth.
I
I
When it is not going to be used for a long
time:
When the air conditioner is to be used
again:
•
If the dirt is noticeable, wipe the unit with a cloth
soaked in a solution of mild detergent diluted in luke-
warm water.
1 Perform the FAN operation for 3 or 4 hours
1 Clean the air filter and install it in the indoor
CAUTION:
•
Do not use gasoline, benzine, polishing powder, or
insecticide. The unit may be damaged.
to dry the inside of the air conditioner.
unit.
When the unit is to be cleaned, switch it off and discon-
nect the power supply plug or turn off the breaker. Since
the fan rotates at high speed during operation, it may
cause an injury.
To perform FAN operation, set the remote controller to
the highest temperature in the MANUAL COOL mode.
(Refer to page 7.)
(Refer to page 10 for cleaning instructions.)
2 Check that the air inlet and outlet of the in-
door/outdoor units are not blocked with any
obstacles.
2 Turn off the breaker and/or disconnect the
power supply plug.
CAUTION
3 Check that the earth is connected correctly.
CAUTION:
Do not open the front panel up past the level position.
The panel may come off in order to prevent it from being damaged.
Turn off the breaker or disconnect the power supply plug
when the air conditioner is not going to be used for a
long time.
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.
•
The front panel may also come off if the upper part of the front panel is pulled down.
Dirt may collect and this may cause a fire.
3 Remove the batteries from the remote con-
Do not exceed.
troller.
CAUTION:
Movable
range
To prevent liquid leakage, take out all batteries when the
remote controller is not going to be used for a long time.
If the front panel comes off, attach it as explained below.
I
Keeping the front panel level with one hand, insert the hinges one by one with the other hand
into the notches at the left, right and center of the top of the indoor unit until they click into
place. (1) Then, close the front panel. (2)
1
Keep the front panel level and
insert the hinges into the notches.
2
•
Do not step onto an unstable bench when maintaining the unit, etc. This may cause an injury, etc. if you fall
down.
9
CLEANING THE CATECHIN AIR FILTER
REPLACEMENT OF THE AIR CLEANING FILTER
Do not open the front panel up past the level position.
When the capacity is lowered because of dirt, etc., it is necessary to replace the air cleaning filter.
The panel may come off in order to prevent it from being damaged.
Air cleaning filter replacement
About once every 4 months
Cleaning the catechin air filter (about once every 2 weeks)
1 Remove the catechin air filter.
3 After washing with water/lukewarm water,
1 Remove the catechin air filter.
1 Install a new air cleaning filter.
dry the catechin air filter well in the shade.
•
Do not expose the catechin air filter to direct sun-
light or heat from a fire when drying it.
Open the front
panel, then
remove/replace
the filter.
2 Install the catechin air filter and securely
Catechin air filter
Catechin air filter
Remove.
close the front panel.
2 Remove the air cleaning filter (White bellows
type).
CAUTION:
When the catechin air filter is to be removed, do not touch
the metal parts of the indoor unit.
This may cause an injury.
4 Install the catechin air filter.
2 Remove dirt from the catechin air filter us-
ing a vacuum cleaner or by washing the fil-
ter with water.
Air cleaning filter
•
If the dirt is noticeable, wash the filter with a solu-
tion of mild detergent diluted in lukewarm water.
If hot water (50 °C or more) is used, the filter may
be deformed.
Air cleaning filter
Install.
•
•
•
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 colour of the filter turns
to dark brown, replace the filter at once.
Optional parts Optional parts are available from your local dealer.
Name of parts
Parts number
AIR CLEANING FILTER
MAC-1700FT
•
Please purchase the optional parts (MAC-1700FT) as a set (2 pcs) for the first time use.
What is “Catechin air filter”?
The air filter is dyed with a natural material, catechin, that is contained in tea. The catechin air filter deodorizes
odor and noxious gases such as formaldehyde, ammonia, and acetaldehyde. Moreover, it restraints the activity of
the viruses adhering to the filter.
10
BEFORE CONTACTING THE SERVICE REPRE- WHEN YOU THINK THAT TROUBLE HAS OCCURRED
SENTATIVE, CHECK THE FOLLOWINGAGAIN
Question
Answer (not a malfunction)
Question
Answer (not a malfunction)
The air conditioner cannot • This protects the air conditioner according to in-
Water leaks from the out- • During COOL and DRY operations, pipe or pipe
Question
Check points or Remedy
be operated for about 3 min-
utes when restarted.
structions from the microprocessor. Please wait.
door unit.
connecting sections are cooled and this causes
water to condense.
The air conditioner cannot • Is the breaker turned on?
be operated.
• In the heating operation, the defrosting opera-
tion makes water frozen on the outdoor unit melt
and drip down.
• In the heating operation, water condensed on
the heat exchanger drips down.
• Is the fuse blown?
• Is the ON timer set? (Page 8)
Cracking sound is heard.
• This sound is generated by the expansion/con-
traction of the front panel, etc. due to change in
temperature.
The room cannot be cooled • Is the temperature setting correct? (Page 7)
or heated sufficiently.
• Is the filter clean? (Page 10)
The air from the indoor unit • The air conditioner may suck in an odor adher-
• Are there any obstacles blocking the air inlet or
outlet of the indoor or outdoor unit?
• Is a window or door open?
smells strange.
ing to the wall, carpet, furniture, cloth, etc. and
blow it out with the air.
White smoke is discharged • In the heating operation, vapor generated by the
from the outdoor unit. defrosting operation looks like white smoke.
The fan of the outdoor unit • When the outside temperature is low, the fan may
Air does not blow out soon • Please wait as the air conditioner is preparing
in the heating operation. to blow out warm air.
The air from the indoor unit • Is the filter clean? (Page 10)
smells strange.
does not rotate even
though the compressor is
running. Even if the fan
starts to rotate, it stops
soon.
not operate to maintain sufficient cooling capac-
ity.
The operation is stopped • Defrosting of the outdoor unit is being done (De-
The display on the remote • Are the batteries exhausted? (Page 5)
controller does not appear • Is the polarity (+, -) of the batteries correct?
for about 10 minutes in the
heating operation.
frosting 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.)
or it is dim. The indoor unit
does not respond to the re- • Are any buttons on the remote controller of other
mote control signal. electric appliances being pressed?
(Page 5)
The sound of water flowing • This is the sound of refrigerant flowing inside the
is heard.
air conditioner.
• This is the sound of condensed water flowing in
the heat exchanger.
• This is the sound of the heat exchanger defrost-
ing.
Hissing sound is some- • This is the sound when the flow of refrigerant
times heard. inside the air conditioner is switched.
When a power failure oc- • Does the air conditioner start operating again?
curs.
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 Descrip-
tion of “AUTO RESTART FUNCTION” on page
6.)
The room cannot be heated • When the outside air temperature is low, the
sufficiently. heating effect may not be sufficient.
The sound as burbling is • This sound is heard when the outside air is ab-
heard.
sorbed 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.
The swing operation of the • This is for the swing operation of the VERTICAL
VERTICAL VANE is sus-
pended for about 15 sec-
onds, then restarted.
VANE to be performed normally.
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 a multi-unit system, the • A small amount of refrigerant continues to flow
indoor unit which is not op-
erating becomes warm and
a sound, similar to water
flowing, is heard from the
unit.
into the indoor unit even though it is not operat-
ing.
The room cannot be cooled • When a ventilation fan or a gas cooker is used
In the following cases, stop using the air conditioner and consult your dealer.
sufficiently.
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.
•
•
•
•
When water leaks or drops from the indoor unit.
When the left operation indicator lamp blinks.
When the breaker trips frequently.
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.
Operation of the air conditioner may interfere with radio or TV reception in
areas where the reception is weak. An amplifier may be required for the af-
fected device.
The air conditioner starts • These models are equipped with an auto restart
Mist is discharged from the • The cool air from the air conditioner rapidly cools
the operation only with the
main power turned on,
though you do not operate
the unit with the remote
controller.
function. When the main power is turned off with-
out stopping the air conditioner with the remote
controller and is turned on again, the air condi-
tioner will start operation automatically in the
same mode as the one set with the remote con-
troller just before the shutoff of the main power.
•
•
air outlet of the indoor unit.
moisture in the air inside the room, and it turns
into mist.
When thunder is heard, stop operation and disconnect the power supply plug
or turn off the breaker. Otherwise, the electrical parts may be damaged.
The air flow direction • When the air conditioner is operated in COOL
changes during operation.
The direction of the hori-
zontal vane cannot be ad-
justed with the remote con-
troller.
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 tempera-
ture is too low or when defrosting is being done,
the horizontal vane position is automatically set
to horizontal.
11
INSTALLATION, RELOCATION AND INSPECTION
CAUTION:
• Earth the unit.
The installation location of the outdoor unit should be at least
Installation place
Avoid installing the air conditioner in the following places.
3 m away from the antennas for TV sets, radios, etc. In areas
where the reception is weak, provide greater space between
the outdoor unit and the antenna of the affected device if op-
eration of the air conditioner interferes with radio or TV recep-
tion.
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 places,
etc.).
•
Where flammable gas could leak.
Inverter-type
CAUTION:
To prevent the effects
of a fluorescent lamp,
keep as far apart as
possible.
fluorescent lamp
wall, etc.
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 earth leakage breaker is not installed, it may cause an electric shock.
Well-
ventilated
dry place
Keep a space
to prevent the
picture
•
•
•
•
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.
Inspection and maintenance
distortion or
the noise.
1 m
or more
100 mm or
more
•
•
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.
500 mm or
more
TV
1 m
Cordless
or more
phone or
Portable
phone
3 m
or more
•
•
Where there is high-frequency or wireless equipment.
Radio
* The required space depends on the type of outdoor unit.
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.
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
Electrical work
•
When the air conditioner is to be removed or re-installed because of rebuilding, moving, etc., special techniques and
work are required.
•
•
Provide an exclusive circuit for the power supply of the air conditioner.
Be sure to observe the breaker capacity.
WARNING:
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.
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.
• Do not use intermediate connection of the power supply cord or the extension cord and do not connect many
devices to one AC outlet.
Disposal
To dispose of this product, consult your dealer.
A fire or an electric shock may result from poor contact, poor insulation, exceeding the permissible current, etc.
Consult your dealer.
If you have any questions, consult your dealer.
Guaranteed operating range
Indoor
Outdoor
32°C DB
23°C WB
21°C DB
15°C WB
27°C DB
—
43°C DB
—
Upper limit
Lower limit
Upper limit
Lower limit
Cooling
Heating
-10°C DB
—
24°C DB
18°C WB
-10°C DB
-11°C WB
20°C DB
—
12
NOTE
NOTE
NOTE
HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
SG79Y329H01
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