Note For Multi System - Daikin Super Multi NX C-Series Service Manual

SiE12-411

2.12 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
2. With the Priority Room Setting active
" 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.
•
•
" OUTDOOR UNIT SILENT Operation
1. With the Priority Room Setting present but inactive or not present
2. With the Priority Room Setting active
" 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.
System Configuration
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.
See "Priority Room Setting" on the next page.
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.
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.
See "Priority Room Setting" on the next page.
Instruction
A
room
Outdoor
unit
B
room
Living
room
C
room
145