22
Note for Multi System
What is a “Multi System”?
This system has one outdoor unit connected to multiple
indoor units.
Selecting the Operation Mode
With the Priority Room Setting present but
1.
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 (*1) as the
fi
rst unit.
Otherwise, they will enter the Standby Mode, and the
operation lamp will
fl
ash; this does not indicate malfunction.
(*1)
COOL, DRY and FAN mode may be used at the same time.
•
AUTO mode automatically selects COOL mode or HEAT mode based on the room temperature.
•
Therefore, AUTO mode 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 Mode
, then using
HEAT Mode
in any room after this will give priority to
HEAT
. In this situation,
the air conditioner running in FAN Mode will go on standby, and the operation lamp will
fl
ash.
With the Priority Room Setting active.
2.
See “Priority Room Setting” on the next page.
B
room
A
room
Outdoor
unit
NIGHT QUIET Mode (Available only for COOL operation)
NIGHT QUIET Mode requires initial programming during installation. Please consult your retailer or dealer for assistance.
NIGHT QUIET Mode reduces the operation noise of the outdoor unit during the nighttime hours to prevent annoyance to neighbors.
The NIGHT QUIET Mode is activated when the temperature drops 9°F (5°C) or more below the highest temperature recorded
•
that day. Therefore, when the temperature difference is less than 9°F (5°C), this function will not be activated.
NIGHT QUIET Mode reduces slightly the cooling ef
fi
ciency of the unit.
•
OUTDOOR UNIT QUIET Operation
Page 17
With the Priority Room Setting present but inactive or not present.
1.
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.
2.
See “Priority Room Setting” on the next page.
COOL / HEAT Mode Lock
The COOL / HEAT Mode Lock requires initial programming during installation. Please consult your authorized dealer for
assistance. The COOL / HEAT Mode Lock sets the unit forcibly to either COOL or HEAT Mode. This function is convenient when
you wish to set all indoor units connected to the Multi system to the same operation mode.
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