Hitachi RPC-2.0FSR Installation & Maintenance Manual page 39

(d) Connecting to Wall Type Indoor Unit with Receiver
The transition wiring is required when the wall type indoor unit (with receiver) is connected.
Main
Incorrect
(3) The address of indoor unit can not be changed from the wired controller.
(4) This indoor unit is adopted four (4) steps of fan speed (HIGH 2, HIGH, MED and LOW). When it is
installed with three (3) steps of fan speed type, connect the wired controller to four (4) steps of fan
speed type. If not, "HIGH 2" will not be indicated and can not be selected.
The wired controller PC-ARF1 or PC-AWR with PC-ALHP1 must be used.
(5) In the case of connecting the centralized controller, the followings are limited.
If they are utilized without following limitations, the operation is not run correctly.
Name
Central Station
Central Station DX
Centralized ON/OFF Controller
Central Station NT
Central Station EX
HARC70-P1
HARC-BX
NOTES:
1. T he centralized controllers cannot be used together.
2. " HIGH 2" cannot be set from the centralized controller.
There is no restriction. However, for the indoor unit without wired controller or receiver kit, when the
1
condition is checked on the centralized controller, the indication is always "Prohibiting Operation by
Wired Controller" for all items.
The indoor unit with wired controller or receiver kit is required to be set as the main unit in the
2
group.
If the setting is wrong, the centralized controller cannot control the indoor units in the group.
The transition wiring is required because the centralized controller cannot recognize the indoor
3
units without the wired controller.
If the indoor unit is not connected to the wired controller by the transition wiring, either of the
followings occurs.
a. The centralized controller cannot recognize the indoor units not connected to the wired controller
or receiver kit.
b. The centralized controller cannot control the indoor unit group supposed to be remote-controlled
by it.
A10762300A-rev.1
Sub
Wall Type
Model
PSC-A64S
PSC-5S
PSC-A64GT
PSC-A32MN
PSC-A128WX2
PSC-A16RS
PSC-A128WEB3
PSC-A128EX
HARC70-P1
HARC-BX
Main
Restrictions
2
2
2
2
3
1
3
3
3
When the condition of the indoor unit which is not
connected to the wired controller is checked on
the centralized controller, the indication is always
"Prohibiting Operation by Wired Controller"
for all items.
Sub
Wall Type
Correct
33