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Basic Operations
"Disable scheduled operation" button
The "Disable scheduled operation" function is ON.
Use button 5 (P18) to temporarily disable the scheduled operation.
When the function is enabled, the indicator on button 5 will light up in yellow.
When this function is enabled, the icon
operation will not be run.
Operating the LOSSNAY group
Displays that are not marked by numbers on the screen are the same as those on the Air conditioning unit group screen.
(2) (1)
(3)
(4)
Operating the General equipment group
Displays that are not marked by numbers on the screen are the same as those on the Air conditioning unit group screen.
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The "Disable scheduled operation" function is OFF.
will appear on the screen, and the scheduled
Mode
Touch (1) to access the modes in the order "Bypass,
Heat recovery, Auto."
The selected mode will appear in the area marked (2).
* Available mode varies depending on the model.
Modes that are unavailable do not appear.
Fan speed setting
Touch (3) to access the fan speeds in the order
"Low, High."
The selected fan speed will appear in the area
marked (4).
Displays the General equipment type.
*When changing icons, refer to the Installation Manual.
ON/OFF operation
• When the General equipment is turned on,
the output contact of DIDO controller (PAC-
YG66DCA) also turns on.
• When the General equipment is turned off,
the output contact of DIDO controller (PAC-
YG66DCA) also turns off.
Multiple group selection screen
Allows the user to collectively operate all groups that are selected
on the GRID or LIST screen.
When selected groups include two or more unit types, select
the unit type to be operated. Then, the target group will be the
selected unit group.
(1)
Disabling functions
Lock Buttons
When AT-50A locks its own functions for ON/OFF, Mode, Temperature, Fan speed, "Disable scheduled
operation" button, the icon above will appear on the corresponding buttons, and the functions will be
disabled.
When the ON/OFF function is locked, the Collective ON/OFF button will be enabled.
Example) ON/OFF operation lock
During receiving the external input signal
The ON/OFF function cannot operate when the following displays appear.
■Displays the emergency stop level-signal input*
Operation restrictions
If the ON/OFF, Mode, and Temperature buttons on the AT-50A are disabled from other controllers,
will appear on the buttons, and these buttons will not be available for selection.
If the AT-50A denies other controllers access to itself, other controllers cannot disable the functions on
the AT-50A.
* To operate the Air conditioning unit group
Check the selected groups.
Touch (1) to show the
selected group confirmation
screen.
■Displays ON/OFF level-signal input
The button cannot
be operated.
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