Operation Selection Procedure - Hitachi PC-ARF Technical Catalogue

5 Centralised remote controls
PSC-A64S
Procedure for the cancellation of slave unit setting
a. Screen Change for Cancellation of Slave 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. When "1" (master unit setting mode)
is turns ON at the 7-segment indicator for checking, depress the "CHECK" switch
again, and then the checking indication is changed to "2" (slave unit setting mode).
b. Select the refrigerant system address and indoor unit address to cancel. The refriger-
ant system address is changed by depressing "∇" (TEMP) switch and the indoor unit
address is changed by depressing "∆" (TEMP) switch in order as shown below. In this
case, the switch is kept depressing, and the indication of the refrigerant system ad-
dress or the indoor unit address is fast-forwarded.
i. * The Ref. Nº and I.U. address of the indoor unit unconnected are not indicated.
ii. * The Ref. Nº and I.U. address of the indoor unit set as the master unit are not
indicated.
c. Cancellation of Slave Unit Address.
Depress the "RUN/STOP" switch and the slave unit is cancelled "SET" indicator and
the "" indicators of zone and group turn ON.
d. Perform the cancellation of slave unit setting procedure b and c for each intended
refrigerant system and address.
e. After completion of canceling the slave unit setting, change the mode to the standard
state by depressing "RESET" switch.

5.3.4.2 Operation selection procedure

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About Setting Target
The zone and the group subject to setting and monitoring are called as setting target. The central station indicates the
setting target as shown below.
Indication Example 1
This indication is the example in the case where the setting target is group. The setting of
the selected group is ordered.
Indication Example 2
This indication is the example in the case where the setting target is zone.
The setting of all the groups set in the selected zone is ordered.
Indication Example 3
This indication is the example in the case where the setting target is all the indoor units.
The setting of all the units (all the groups) set is ordered.
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TCGB0106 rev.0 - 12/2014
The above figure shows the
case of selecting Ref. Nº. "1"
and I. U. Add. "2".
(ex. In case of Zone 1 and
Group 2)
(ex. In case of All Group in
Zone 1)
(ex. In case of All Indoor
Units)