Hitachi PC-ARF Technical Catalogue page 396

5 Centralised remote controls
PSC-A64S
Procedure for the cancellation of master unit setting
a. Screen change for cancellation of Master Unit setting keep depressing the "CHECK"
switch for 3 seconds during all the indoor unit is stopped (with "RUN" indicator OFF).
The "CHECK" indicator turns ON, and it shows the state is changed to the CHECK
mode and "1" (master unit setting mode) turns ON at the 7-segment indicator for
checking.
b. Select of Zone to be cancelled depress the "ZONE" switch and the "GROUP" 
switch, and select the zone and the group to cancel.
c. Cancel the slave unit setting.
Depress the "RUN/STOP" switch and the master unit is cancelled "SET" indicator and
the "" indicators of group turn OFF.
The "" indicators of zone turns OFF when there is one or more group with the mas-
ter unit set.
d. Perform the cancellation of master unit setting procedure b and c for each zone and
group.
e. After completion of cancelling the master unit setting, change the mode to the stand-
ard state by depressing "RESET" switch.
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Setting of slave unit
When using the remote control switch (PC-ART), the half-size remote control switch (PC-ARH) or receiver kit (PC-ALH*),
after the setting of master unit, the central station automatically set the slave unit. Check for the setting state by the slave
unit setting mode.
Indication of slave unit 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
with the smallest address among the slave units of the group to be set. The "" indication of group flickers in case that the
slave units of the group are already set. In case that the slave units are not set, "- -" is indicated at Ref. Nº and I.U. Add.
"2" shows the slave
unit setting mode.
Only the zone including the group
with the master unit already set is
indicated.
The zone to be set is flickered.
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TCGB0106 rev.0 - 12/2014
Ref. Nº of Indoor unit to be set.
(Can be changed by depressing the "∇" (TEMP) switch.)
"" shows the zone and the group with indoor units to be set (The
above figure shows that the indoor unit of Ref. Nº.1 and I.U. Add. 2
is set as the slave unit of zone 1, group 2).
When the "SET" indication appears, the indi-
cated indoor unit is set as the slave unit. (When
"SET" does not appear, the slave unit is not set.)
Address of Indoor unit to be set.
(Can be changed by depressing the "∆ " (TEMP)
switch.)
When the "CHECK" indication appears, the
central station is in the check mode.