Hitachi PSC-5S Installation And Operation Manual page 9

Central
Station
r
Maste
Refrigerant No. Setting
Indoor Unit RSW Setting
Group Number
4.2.1. GROUP SETTING PROCEDURE
Changing to Group Setting Mode
1. Depress the "CHECK" switch for 3 seconds during the units of all groups are stopped. The
central station is changed to the check mode and the "CHECK" indication is turned ON. And
the "1" (Main Unit Setting Mode) is indicated at the 7 segment indicator for checking.
2. Depress the "CHECK" switch, and the indication on the 7 segment indicator for checking is
changed to "2" (Sub Unit Setting Mode).
3. Depress the "RESET" switch, and the check mode is changed to the normal mode.
ATTENTION:
- When there is a group in operation, the central station can not be changed to the check mode.
- When the group setting is performed, use the check table for group setting (page 9), and you
can also write down the group number on the surface inside of the switch cover.
Setting of Master Unit
Indication of Master Unit Setting Mode
When the central station is changed to the master unit setting mode, the LCD indication on the
central station is as shown below. The indication of the group to be set is flickered. The
refrigerant cycle number (hereafter called "Ref. No.") and the indoor unit address (hereafter called
"I.U. Add.") indicates the address of the indoor unit which is set as the master unit of the group to
be set. The " " indication of group flickers in case that the master unit of the group is set. When
the "SET" indication appears, the indoor unit indicated on LCD is set as the master unit. In case
that the master unit is not set, "- -" is indicated at Ref. No. nd I.U. Add., and the "SET" indication
does not appear.
Slave
Slave
Master
1 1 2
0 1 0
1 2
GROUP SETTING
Master Master
Without Remote
Control Switch
2 3 3
1 0 1
3 4
/
5
4