Group Setting - Hitachi PC-ARF Technical Catalogue

5 Centralised remote controls
PSC-A16RS
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Resetting of Centralised ON/OFF Controller
1 Depress the switches "15" and "16" simultaneously for 3 seconds when all group is stopped. The operation lamps
(LED) of the group 15 and 16 is turned ON.
2 Depress the switches "15" and "16" simultaneously again. The operation lamp (LED) of the group 16 flickers, then
depress the switch "2" and confirm that the operation lamp(LED) of the group 6 is turned ON.
3 When the resetting of centralised ON/OFF controller is completed, all the operation lamp (LED) is turned OFF, and
the group recognition is started again.
C A U T I O N
DO NOT perform the resetting within 3 minutes after the operation order from the centralised ON/OFF controller is performed. If the reset-
ting is performed within 3 minutes, the remote control switch may be in the state of centralised control. When turning OFF the power supply
of the centralised ON/OFF controller within 3 minutes, the same consequence may occur.

5.4.4.2 Group setting

For group setting with the centralised ON/OFF controller, the remote control switch is required. When using with other
centralised controllers, the remote control switch is also required.
In case that there are indoor units with auto-louver and indoor units without auto-louver in the same group, the address of
the smaller number in the remote control switch group shall be applied for the indoor units with auto-louver. If the address
of the smaller number is applied for the indoor units without auto-louver, the setting of auto-louver is not available for the
remote control switch group.
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Case 1: Group Setting by Centralised ON/OFF Controller Alone
Group setting
1 The centralised ON/OFF controller has no function of group setting itself. The group setting is automatically per-
formed according to the address setting of the indoor unit.
2 The group of indoor units controlled by the same remote control switch is regarded as one group. Therefore, in the
case where the remote control switch is connected individually with each indoor unit, one unit is regarded as one
group as shown below.
Group 2
Group 1
3 Up to 8 centralised ON/OFF controllers can be connected to the same H-LINK (Control Line) system. For connection
of multiple centralised ON/OFF controllers, provide address for each centralised ON/OFF controller by setting the dip
switch (SW18) inside of the centralised ON/OFF controller.
4 The group setting of the centralised ON/OFF controller is performed in order, from the indoor unit with the smallest
address number, and finished on the following conditions.
- When the group setting up to 16 groups is completed.
- When there is no indoor unit in the same refrigerant cycle.
- When the serial numbered address of the indoor unit breaks off, and there are indoor units with continued address
number in the same refrigerant cycle.
401
TCGB0106 rev.0 - 12/2014
Group 3
I.U. Add
Ref. Add.
Remote Control
Switch
Group 4
5