Filter
Top Products
ON-SITE SETTING AND OTHERS (Continued)
<Group Control Operation>
Group control allows operation control of up to 8 indoor units using one remote controller. It includes twin,
triple, and double twin controls with one outdoor unit.
The indoor unit connected to outdoor unit controls room temperature according to the R/C setting.
<An example of system>
1-1 2-1 3-1 3-2 4-1 7-1
(1) Scope of R/C indication
The indoor unit setting range (operation mode/fan speed/temperature) set in the header unit is
reflected in the remote controller.
A Do not set a concealed duct high static pressure type (AID-P***1H) for header unit.
• If the type is set as header unit, settings are as follows.
Operation mode: [Auto cooling/heating], [HEAT], [COOL] or [FAN] without [DRY]
Fan speed : [HH]
• In the DRY operation mode, FAN mode is not available for duct models.
B Do not set a “COOL only” model for header unit.
• [Auto cooling/heating] and [HEAT] operation modes are not available.
(2) HA
Both indoor and outdoor units are compatible with the remote control HA.
Operation ON/OFF control for entire group is available.
A Multiple HA inputs in one group are not allowed.
(3) Address setting
If there is no serial data communication between indoor and outdoor units at power on, the indoor unit
is regarded as twin follower unit. (Each time of power on)
... Recognition of twin header (main)/follower (sub) is carried out at each power on, and the result is
not stored in the non-volatile memory.
When performing auto address setting, power on the indoor units in a control group within 3 minutes.
... If powered on after 3 minutes when auto address judgment is completed, the unit is rebooted
and reenters auto address setting mode.
A Connect 3 wires between indoor and outdoor units properly.
B Check refrigerant line address, indoor unit address, and group address of each unit.
Regarding twin, triple, and double twin, in particular, check for one refrigerant line address for all
units.
C An indoor unit number (refrigerant line address/group address), once it is set, is retained in
principle unless it is not used for any other unit.
O/U O/U
O/U O/U
O/U
I/U I/U
I/U I/U
I/U
I/U
Header
8 units maximum
R/C
– 61 –