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Manual Operations
And Maintenance
Page 9
Operation And Maintenance
3
Operation mode selection
Maintenance
While simultaneously operating two indoor units
or more, make sure the operation modes will not
conict with each other. The heat mode claims
precedence over all other modes. If the rst unit
intially started to operate under heat mode, the
other units can operate under heat mode only.
For example: If the rst unit intially started to
operate under cool (or fan) mode, the other units
can operate under any mode except heat. If one
of the units switches to heat mode, the other
operating units will stop operation and diplay ”--”
(For the units with display LED) or the Auto and
Operation indication light ash rapidly, the
Defrost indication light turns o, the Timer
indication light remains on (For the units
without display LED), or the Defrost and
Alarm indication light (if applicable) illuminate,
the Operation indication light ashes rapidly
and the Timer indication light turns o ( For the
Floor and standing type).
If you plan to keep the system idle for a long time,
perform the following:
1. Clean the indoor unit and air lter.
2. Select FAN only mode, let the indoor fan run
for a while to dry the inside of the unit.
3. Disconnect the power supply and remove
battery from the remote control.
4. Check components of the outdoor unit
periodically. Contact your installer 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 the dust
accumulated on rear air intake grille, in order to
avoid the dust blowing out 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 airconditioner has not been used for a long
time.
Suggestion: For the systems with an Electric
Heater, when the outside ambient
temperature is below 0°C (32°F), we strongly
recommend you to keep the machine plugged
in order to guarantee smoothl restart.
Optimal operation
To achieve optimal performance, please note the
following:
• Adjust the air ow direction correctly so that it
is notdirected on people or pets.
• Adjust the temperature to achieve the highest
comfort level. Do not adjust the unit to
excessive temperature levels.
• Close doors and windows on COOL or HEAT
modes, or performance may be reduced.
• Use TIMER ON button on the remote controller
to select a time you want to start your air
conditioner.
• Do not put any object near 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 per formance may be
reduced.
• Do not operate unit with horizontal louver in
closed position.
NOTE: Before you clean the air conditioner, be
sure to switch the power o by turning OFF the
circuit breaker feeding the system.
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