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3
TIMER ON/OFF
Press the TIMER ON/OFF button.
The timer setting procedure ends.
The display "
or
ing light to a constant light.
Refer to figure 4 on page 3
NOTE
NOTE
NOTE
• When setting the timer Off and On at the same
time, repeat the above procedure from
once again.
When the timer is programmed to stop the system
after 3 hours and start the system after 4 hours, the
system will stop after 3 hours and then 1 hour later
the system will start.
• After the timer is programmed, the display shows
the remaining time.
• Press the TIMER ON/OFF button once again to
cancel programming. The display vanishes.
7. OPTIMUM OPERATION
Observe the following precautions to ensure the
system operates.
• Adjust the room temperature properly for a com-
fortable environment. Avoid excessive heating or
cooling.
• Prevent direct sunlight from entering a room dur-
ing cooling operation by using curtains or blinds.
• Ventilate the room regularly.
Using the unit for long periods of time requires
attentive ventilation of the room.
• Keep doors and windows closed. If the doors and
windows remain open, room air will flow out and
cause to decrease the effect of cooling and heat-
ing.
• Do not place other heaters directly below the
indoor unit.
They may deform due to the heat.
• Never place objects near the air inlet and the air
outlet of the unit. It may cause deterioration in the
effect or stop in the operation.
" changes from flash-
!
to
• Turn off the main power supply switch when it is
not used for long periods of time. When the main
power switch is turned on, some watts of electric-
ity is being used even if the system is not operat-
ing. Turn off the main power supply switch for
saving energy. When reoperating, turn on the
main power supply switch 6hours before opera-
tion for smooth running (Refer to MAINTE-
NANCE).
• When the display shows "
AIR FILTER), ask a qualified service person to
clean the filter (Refer to MAINTENANCE).
8. MAINTENANCE
(FOR SERVICE PERSONNEL)
ONLY A QUALIFIED SERVICE PERSON IS
ALLOWED TO PERFORM MAINTENANCE
IMPORTANT!
• BEFORE OBTAINING ACCESS TO TERMINAL
DEVICES, ALL POWER SUPPLY CIRCUITS
MUST BE INTERRUPTED
• To clean the air conditioner, be sure to stop oper-
ation, and turn the power switch off. Otherwise, an
electric shock and injury may result.
• Do not wash the air conditioner with water.
Doing so may result in an electric shock.
• Be careful with a scaffold or staging.
Caution must be exercised because of work at a
high place.
HOW TO CLEAN THE AIR FILTER
Clean the air filter when the display shows "
(TIME TO CLEAN AIR FILTER).
Increase the frequency of cleaning if the unit is
installed in a room where the air is extremely
contaminated.
If the dirt becomes impossible to clean, change the
air filter.
(Contact your dealer when you exchange air filter.)
1. Open the suction grille.
Slide the latches (×2) outward to the side and
carefully lower the grille.
(Do the same procedure for closing.)
" (TIME TO CLEAN
"
11
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