Note for Multi System
Multi system has one outdoor unit connected to multiple indoor units.
Selecting the operation mode
When the priority room setting is active
but the set unit is not operating or when
the priority room setting is inactive
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 multi-monitor
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 indoor 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 multi-monitor lamp will fl ash.
With the priority room setting active
Refer to “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 nighttime hours to prevent annoyance to
neighbours.
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 effi ciency of the unit.•
OUTDOOR UNIT QUIET operation
Refer to “OUTDOOR UNIT QUIET operation”.
Page 19
When the priority room setting is active but the set unit is not operating or
when the priority room setting is inactive
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.
When the priority room setting is active
Refer to “Priority room setting” on the next page.
