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Note for Multi System
Multi system has one outdoor unit connected to multiple indoor units.
Selecting the operation mode
With the priority room setting present but
inactive or not present.
When more than one indoor unit is operating, priority is given to
the
fi
rst unit that was turned on.
In this case, set the units that are turned on later to the same
operation mode as the
fi
rst unit.
Otherwise, they will enter the standby state, and the OPERATION
lamp will
fl
ash: this does not indicate malfunction.
NOTE
Notes on operation mode for multi system
COOL, DRY and FAN operation may be used at the same time.
•
AUTO operation automatically selects COOL operation or HEAT operation based on the room temperature.
•
Therefore, AUTO operation is available when selecting the same operation mode as that of the room with the
fi
rst unit to be turned on.
CAUTION
Normally, the operation mode in the room where the unit is
fi
rst run is given priority, but the following situations are exceptions, so please keep
•
this in mind.
If the operation mode of the
fi
rst room is
FAN operation
, then using
HEAT operation
in any room after this will give priority to
HEAT
operation
. In this situation, the air conditioner running in FAN operation will go on standby, and the OPERATION lamp will
fl
ash.
With the priority room setting active.
Refer to “
Priority room setting
” on the next page.
NIGHT QUIET operation (Available only for COOL operation)
NIGHT QUIET operation requires initial programming during installation. Please consult your retailer or dealer for assistance.
NIGHT QUIET operation reduces the operation noise of the outdoor unit during the nighttime hours to prevent annoyance to neighbors.
The NIGHT QUIET operation is activated when the temperature drops 6°C or more below the highest temperature recorded that day.
•
When the temperature difference between the current outdoor temperature and the maximum outdoor temperature becomes less than 4°C,
the NIGHT QUIET operation will be stopped.
NIGHT QUIET operation reduces slightly the cooling ef
fi
ciency of the unit.
•
OUTDOOR UNIT QUIET operation
Refer to “
OUTDOOR UNIT QUIET operation
”.
Page 18
With the priority room setting present but inactive or not present.
When using the OUTDOOR UNIT QUIET operation feature with the Multi system, set all indoor units to OUTDOOR UNIT
QUIET operation using their remote controllers.
When clearing OUTDOOR UNIT QUIET operation, clear one of the operating indoor units using their remote controller.
However OUTDOOR UNIT QUIET operation display remains on the remote controller for other rooms.
We recommend you release all rooms using their remote controllers.
With the priority room setting active.
Refer to “
Priority room setting
” on the next page.
A room
B room
C room
D room
Outdoor unit
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