Others; The Smart Way To Use; Caring For The Machine - Mitsubishi Electric 20-MYA Operation Manual

For wireless remote controller (option)
AUTO STOP
AUTO START
D Press the
or button (TIMER SET).
• Time can be set while the following symbol is blinking.
OFF timer : V
is blinking.
ON timer : V
is blinking.
h min
E Use the and buttons to set the desired time.
F Canceling the timer.
To cancel the OFF timer, press the
To cancel the ON timer, press the
• It is possible to combine both OFF and ON timers.
• Pressing the ON/OFF button of the remote controller during timer mode to
stop the unit will cancel the timers.
• If the current time has not been set, the timer operation cannot be used.

4. The smart way to use

Even minimal steps to care for your air conditioner can help make its use far
more effective in terms of air-conditioning effect, electricity charges, etc.
Set the right room temperature
• In cooling operation, a temperature difference of about 5°C between indoors
and outdoors is optimum.
• If the room temperature is raised by 1°C during air-cooling operation, about 10%
electric power can be saved.
• Excessive cooling is bad for health. It also results in the waste of electric power.
Clean the filter thoroughly
• If the screen of the air filter becomes clogged, the airflow and air-conditioning
effect can be significantly reduced. Further, if the condition is left unattended,
failure can result. It is particularly important to clean the filter at the beginning
of the cooling and heating seasons. (When profuse dust and dirt have accu-
mulated, clean the filter thoroughly.)

5. Caring for the machine

Always have filter maintenance performed by a service person.
Before care-taking, turn the power supply OFF.
Caution:
• Before you start cleaning, stop operation and turn OFF the power supply.
Remember that the fan is rotating inside at high speed, posing a serious
risk of injury.
• Indoor units are equipped with filters to remove the dust of sucked-in air.
Clean the filters using the methods shown in the following sketches. (The
standard filter should normally be cleaned once a week, and the long-life
filter at the beginning of each season.)
How to clean
• Clear dust away lightly or clean it up with a vacuum cleaner. In the case of
severe staining, wash the filter in lukewarm water mixed with dissolved neutral
detergent or water, and then rinse off the detergent completely. After washing,
dry it and fix it back into place.
Caution:
• Do not dry the filter by exposing it to direct sunlight or warming it using
fire, etc. Doing so can result in the deformation of the filter.
• Washing it in hot water (more than 50 degree C) can also result in defor-
mation.
8
AUTO STOP
button.
AUTO START
button.

3.7. Others

: Displayed when control is executed by a separately
CENTRALLY CONTROLLED
sold centralized control unit, etc.
STAND BY
: Displayed from the start of heating operation until the
DEFROST
moment warm air blows out.
: This displays indication when some abnormality oc-
CHECK
curs in the unit.
: When a button is pressed for any function which the
NOT AVAILABLE
indoor unit cannot perform, this display flashes con-
currently with the display of that function.
: In the system in which the [Sensor] display is indi-
cated as the "remote controller", room temperature
measurement is performed by the room temperature
sensor built into the remote controller. Therefore, pay
attention to the following:
FILTER : Displayed when it is time to clean the filter.
Press the A [Filter] button twice, then the display is
disappeared.
Prevent intrusion of heat during air-cooling
• To prevent the intrusion of heat during cooling operation, provide a curtain or a
blind on the window to block out direct sunlight. Also, do not open the entrance
or exit except in cases of dire necessity.
Carry out ventilation sometimes
• Since the air periodically gets dirty in a room that is kept closed for a long time,
ventilation is sometimes necessary. When gas appliances are used together
with the air conditioner, special precautions must be taken. If the "LOSSNAY"
ventilation unit developed by our company is used, you can perform ventilation
with less waste. For details on this unit, consult with your dealer.
Caution:
Never pour water or flammable sprays onto the air conditioner. Cleaning using
these methods can result in the failure of the air conditioner, electric shock,
or fire.
Replacement of filter
[Fig. 5.0.1] (P.2)
A Air outlet
C Air filter
(1) The air filter is located at the air inlet (rear side of the unit).
(2) Lift the air filter handles and pull the filter towards you.
(3) If you are going to use an air inlet conduit. remove the air filter. In this case, an
air filter must be prepared locally and installed at the intake grille.
B Air inlet
D Air filter handle