Hitachi PC-ARF Technical Catalogue page 408

5 Centralised remote controls
PSC-A64S
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Indication of Option Setting Mode
When the central station is changed to the slave 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 Ref. Nº and 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 option setting is
already done.
When the "SET" indication appears, the indoor unit indicated on LCD is already set with the optional function.
"A" shows the option
setting mode.
Only the zone with group as the
master unit is indicated. The zone
No. to set is fl ickered.
The state of demand setting of each zone is indicated.
 ON: There is one or more group with demand setting in the
zone.
 OFF: There is no group with demand setting in the zone.
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Setting Procedure
a. Depress the "CHECK" switch and select the setting item A – E.
b. Select the group to be set by depressing the "ZONE" switch and the "GROUP" switch.
Refer to the "Group setting procedure", for the group selection procedure.
c. Depress the "RUN/STOP" switch, the selected group is subject to option setting and the "" indication and the
"SET" indication turn ON.
When there is one or more group with indoor unit set with option in the zone, the zone indication "" turns ON.
Every time the "RUN/STOP" switch is depressed, the "" indication and the "SET" indication turn ON and OFF
alternately, and the state of option setting is changed; the selected group is to be set/not to be set with option set-
ting.
C A U T I O N
• In case that the optional functions are set by the central station, it is required to set the same optional functions for the group by the
remote control switch.
• In case that the optional functions (items A – E as shown above) are set by the remote control switch, it is required to set the same
optional functions for the group by the central station.
• The group, which is set with both of the fixing set temperature (option setting) and "Demand 3" function, is back to the former set
temperature (before Demand ON) when the demand signal is OFF.
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TCGB0106 rev.0 - 12/2014
Ref. Nº. of Indoor Unit Set as Master
Unit of Group To Be Set
Condition of Option Setting for
each Group.
(  is ON: Option is set.
 is OFF: Option is not set.)
When the "SET" indication appears,
the indicated indoor unit is set with
the optional function.
Address of indoor unit set as master
unit of group to be set.
When the "CHECK" indication
appears,the central station is in
the check mode.
Only the group with the master
unit is indicated. The group to set
is flickered.