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Manual Operations
And Maintenance
Page 9
Manual Operations And Maintenance
3
Operation mode selection
Maintenance
While two or more indoor units are
simultaneously operating, make sure the “modes”
do not conict with each other. The heat mode
claims precedence over all other modes. If the
unit initially begins operation in HEAT mode, the
other units can operate in HEAT mode only. For
example: If the unit intially started operating under
COOL (or FAN) mode, the other units can operate
under any mode except HEAT. If one of the units is
set in HEAT mode, the other running units will
stop operation and diplay ”P5” (for units with
display window only) or the auto and operation
indication lights will ash rapidly, the defrost
indication light will turn o, and the timer
indication light will remain on (for units without
a display window). Alternatively, the defrost and
alarm indication light (if applicable) will light up,
or the operation indication light will ash rapidly,
and the timer indication light will turn o (for
the oor and standing type).
If you plan on leaving the unit idle for a long time,
perform the following tasks:
1. Clean the indoor unit and air lter.
2. Select FAN-ONLY mode and let the indoor fan
run for some time to dry the inside of the unit.
3. Disconnect the power supply and remove the
battery from the remote control.
4. Check the components of the outdoor unit
periodically. Contact a local dealer or a
customer service center if the unit requires
servicing.
When the air conditioner is to be used
again:
• Use a dry cloth to wipe o any dust that has
accumulated on the rear air intake grille, in order
to avoid the dust being dispersed from the
indoor unit.
• Check that the wiring is not broken o or
disconnected.
• Check that the air lter is installed.
• Check if the air outlet or inlet is blocked after
the air conditioner has not been used for a long
time.
For units that feature an outdoor electrical heater,
when the outdoor ambient temperature is
below 0°C (32°F), it is strongly recommended
for you to keep the machine energized so as
to keep it warm for a smoother restarting operation.
Optimal operation
To achieve optimal performance, please note the
following:
• Adjust the direction of the air ow so that it is
not blowing directly onto any people.
• Adjust the temperature to achieve the highest
possible level of comfort. Do not adjust the
unit to extreme temperature levels.
• Close doors and windows in COOL mode or
HEAT mode.
• Use the TIMER ON button on the remote
controller to select a time that you want your
air conditioner to start.
• Do not place any objects near the air inlet or air
outlet, as the eciency of the air conditioner
may be reduced, and the air conditioner may
stop running.
• Clean the air lter periodically, otherwise
cooling or heating performance may be
reduced, and the heat exchanger can get clogged.
• Do not operate unit with the horizontal louver in
a closed position.
NOTE: Before you clean the air conditioner, be
sure to switch o the unit and disconnect the
power supply breaker.
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