Hitachi PC-ARF Technical Catalogue page 289

5 Centralised remote controls
PSC-A64GT
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Group register
N O T E
This function is detailed in section "Test run" since it is a required item when performing the Test run procedure.
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Optional Function Setting
This function is used for setting and changing the function selection of air conditioner and central station listed in the fol-
lowing table.
Function
Set "Fixing Operation Mode" to "Enable" to fix the present operation mode.
Fixing Operation Mode
The operation mode is fixed to the present settings, which cannot be changed from the remote control
switch or from the central station.
Set "Fixing Temperature Setting" to "Enable" to fix the present set temperature.
Fixing Temperature
The setting temperature is fixed to the present settings, which cannot be changed from the remote control
Setting
switch or from the central station.
Set "Cooling Only" to "Enable" to fix the operation mode to cooling. This function is used when setting heat
pump models to restricted operation in cooling only.
Cooling Only
Operation modes "HEAT" and "AUTO" cannot be selected from the remote control switch or from the cen-
tral station.
Set "Auto" to "Enable" to use the cooling/heating automatic operation. It is possible to set this mode from
the remote control switch and from the central station.
Auto
However, "AUTO" cannot be selected in the following cases:
* When connected to a cooling-only model.
* When the "Cooling Only" function is enabled.
Set "Fixing Fan Speed" to "Enable" to fix the fan speed.
Fixing Fan Speed
The fan speed is fixed to the present settings, which cannot be changed from the remote control switch or
from the central station.
This function is used for switching the control mode of the central station between "Normal" and "Run/Stop
Only"
*Normal:
The settings of each group are displayed when tapping its button. This is the control mode by default.
Control Mode
*Run/Stop Only:
The control mode at "Monitor 1" and "Monitor 2" is changed to "Run and Stop" for each group only. Tapping
the button of each groups has the effect of switching its operation on and off, without changing any of the
settings.
Set to "Enable" in order to set the prohibition of all remote control operation (all the items) together with a
stop order to the remote control at the OFF time of the schedule function of the controller.
OFF time Remote
In this case, the prohibition of all remote control operation (all the items) is cancelled at the ON time, but
there is no operation order.
control prohibition
This function cannot be set when there is a prohibition of remote control operation (for individual items). Set
this function to "Disab." in such cases.
Display of Accumulated
Tap "Disable" to hide the numerical value of the accumulated operation time. Before setting, tap "All
Groups" at "Optional Function" screen.
Operation Time
N O T E
• "Optional Function Setting" contents are set to the group by the central station, check the setting from the remote control switch in
the same group. If setting is not reflected, set same contents by the remote control switch. In the same way, "Optional Function Set-
ting" contents such as "Fixing Operation Mode", "Fixing Temperature Setting", "Cooling Only", "Fixing Fan Speed" or "Auto" are set to
the group by the remote control switch, check the setting from the central station. If setting it not reflected, set same contents by the
central station.
• Number 3 of "Demand Function Setting" is set to the group, the setting temperature is reset to 20 ºC (in heating operation) or 28 ºC
(in cooling operation) when the demand signal is OFF. In the case, both of "Fixing Temperature Setting" and Number 3 of "Demand
Function Setting" are set to group, the fixed temperature is not changed even if the demand signal is OFF.
• Do not set "Power Supply ON/OFF 1 and 2" by remote control switch when the function "RCS Operation Prohibited" is used. If use
"Power Supply ON/OFF 1 and 2" mode, the function "RCS Operation Permitted" setting is required.
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TCGB0106 rev.0 - 12/2014
Description
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