Hitachi PC-ARF Technical Catalogue page 92

4 Individual remote controls
PC-ARF
C9 - Not Prepared
CA - Not Prepared
Cb - Selection of Forced Stoppage Logic
This function is utilized to select the logic of the contact for forced stoppage signal input.
The setting conditions and the logic of the contact are as shown below.
Setting condition
00
01
CC - Not Prepared
Cd - Not Prepared
CE - Not Prepared
CF - Change of Louver Swing Angle
This function is utilized to change louver swing angle.
Setting
Louver Swing Angle
Condi-
(Air Discharge Angle)
tion
00 Approx. 0 to 45
o
01 Approx. 0 to 25
o
02 Approx. 10 to 45
o
N O T E
When changing the setting, turn OFF the power supply or make the louver swing a couple of times in the auto
the setting
d1 - Power Supply ON/OFF 1 (Automatic Operation when Power Supply Is ON)
This function is utilized to run/stop the unit by turning ON/OFF the power supply.
When this function is utilized in the condition that there is no person to operate the unit, monitor the system for disaster
prevention.
N O T E
• When changing the setting, turn OFF the power supply or make the louver swing a couple of times in the auto swing mode to validate
the setting.
• The unit will be stopped even when the power supply is turned ON/OFF due to power failure. If power failure occurs during the stop-
page of the unit, the operation is restarted after the power supply is restored.
d2 - Not Prepared
d3 - Power Supply ON/OFF 2 (Restarting Function After Power Failure)
This function is utilized to restart the unit operation automatically when the power supply is restored after the power
failure over 2 seconds. In case of the power failure for 2 seconds or less, the standard unit memorize all the operation
modes and restarts the operation automatically. (The compressor restarts operation after 3 minutes guard in addition to
power failure time for up to 2 seconds.)
When this function is utilized in the condition that there is no person to operate the unit, monitor the system for disaster
prevention.
N O T E
• If power failure occurs during the stoppage of the unit, the unit remains stopped after the power supply is restored.
• When the compressor does not reach the fixed temperature, the system may not restart automatically after turning on the power
supply by hot-start control.
*Hot-start Control: The control program that does not operate the compressor even after the power is turned ON if the compressor
does not reach the fixed temperature.
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TCGB0106 rev.0 - 12/2014
Logic of contact
Indoor
A Contact
PCB
Indoor
B Contac
PCB
Purpose
Standard Operation
o
Draft Prevention
o
For High Ceiling
o
Sequence
Contact "open"
Normal
Forced Stoppage
Air Outlet Angle
Activation
Contact "close"
Forced Stoppage
Normal
swing mode to validate