30
Note for Multi System
This system has one outdoor unit connected to multiple
indoor units.
■
Selecting the operation mode
1. With the priority room setting present
but inactive or not present.
When more than 1 indoor unit is operating, priority is
given to the first unit that was turned on.
In this case, set the units that are turned on later to
the same operation mode as the first unit.
Otherwise, they will enter the standby state, and the
OPERATION lamp will flash: this does not indicate
malfunction.
NOTE
CAUTION
2. With the priority room setting
active.
See “Priority room setting” on the next page.
■
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 night time hours to
prevent annoyance to neighbors.
• The NIGHT QUIET mode is activated when the temperature drops 5°C or more below the highest
temperature recorded that day. Therefore, when the temperature difference is less than 5°C, this
function will not be activated.
• NIGHT QUIET mode reduces slightly the cooling (heating) efficiency of the unit.
■ 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 first unit to be turned on.
• Normally, the operation mode in the room where the unit is first run is given priority, but the
following situations are exceptions, so please keep this in mind.
If the operation mode of the first 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 flash.
A room B room
C room D room
Outdoor unit
01_EN_3P248442-3.fm Page 30 Tuesday, September 8, 2009 1:54 PM
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