Daikin FTKS50BVMB, Service Manual

Page: 244 / 456

Instruction SiEN18-622
232 System Configuration
2.2.14 Note for Multi System
<<What is a “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 one 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 (*1) as the first
unit.
Otherwise, they will enter the Standby Mode, and the operation lamp will flash; 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 first unit to be turned on.
<CAUTION>
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 Mode, then using Heating Mode in any room
after this will give priority to heating. In this situation, the air conditioner running in FAN Mode
will go on standby, and the operation lamp will flash.
2. With the Priority Room Setting active
See “Priority Room Setting” on the next page.
„
NIGHT QUIET Mode (Available only for cooling 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.
„
OUTDOOR UNIT SILENT Operation
1. With the Priority Room Setting present but inactive or not present
When using the OUTDOOR UNIT SILENT operation feature with the Multi system, set all indoor
units to OUTDOOR UNIT SILENT operation using their remote controls.
When clearing OUTDOOR UNIT SILENT operation, clear one of the operating indoor units using
their remote control. However OUTDOOR UNIT SILENT operation display remains on the remote
control for other rooms. We recommend you release all rooms using their remote controls.
2. With the Priority Room Setting active
See “Priority Room Setting” on the next page.
„
Cooling / Heating Mode Lock (Available only for heat pump models)
The Cooling / Heating Mode Lock requires initial programming during installation.Please consult your
retailer or dealer for assistance. The Cooling / Heating Mode Lock sets the unit forcibly to either
Cooling or Heating Mode. This function is convenient when you wish to set all indoor units connected to
the Multi system to the same operation mode.
C
room
B
room
A
room
Living
room
O u tdoor
u nit