Mitsubishi Electric AT-50A User manual

Before using the controller, read this
Instruction Book carefully to ensure
proper operation.
Retain this Instruction Book for future
reference.
Make sure that this manual as well as the
Installation Manual are passed on to any
future air condition system users.
To ensure safety and proper operation of
the unit, the unit should only be installed
by qualified personnel.
Air-conditioner Control System
ADVANCED TOUCH CONTROLLER
MODEL
AT-50A
INSTRUCTION BOOK
Safety Precautions .............................................................. 2
Function List........................................................................ 4
Names and Functions of Controller Components................ 6
Screen Conguration [HOME screen] ................................. 8
Buttons [HOME screen]..................................................... 10
Icon Displays [HOME screen]............................................ 12
Basic Operations............................................................... 16
Screen selection.........................................................................16
Group selection..........................................................................17
Operating the Air conditioning unit group...................................18
ON/OFF operation........................................................................ 18
Mode............................................................................................. 18
Temperature setting...................................................................... 20
Interlocked ventilation units(LOSSNAY)/Fan speed/Air direction/Louver settings ....... 21
"Disable scheduled operation" button........................................... 22
Operating the LOSSNAY group..................................................22
Mode............................................................................................. 22
Fan speed setting......................................................................... 22
Operating the General equipment group....................................22
ON/OFF operation........................................................................ 22
Multiple group selection screen..................................................23
Disabling functions.....................................................................23
Menu Screen..................................................................... 24
Usage - Main Menu Settings.............................................26
Operation Setting .......................................................................26
Restriction Settings ....................................................................42
Control Panel..............................................................................50
System Management .................................................................57
Maintenance...................................................................... 61
Touch Panel Cleaning screen.....................................................61
Troubleshooting................................................................. 62

2
33
Safety Precautions
Indicates a risk of death or serious injury.
●Thoroughly read the following safety precautions prior to installation.
●Observe the following precautions to ensure safety.
Indicates a risk of serious injury or structural damage.
WARNING
CAUTION
●After reading this manual, pass it on to the end user to retain for future reference.
●Keep this manual for future reference and refer to it as necessary. This manual should be made available to those who repair or relocate
the controller. Make sure that the manual is passed on to any futureAT-50Ausers.
All electric work must be performed by qualied personnel.
Generalprecautions
(Prohibited actions) (Do not touch) (No water) (No wet hands) (Electric shock hazards) (Injury hazards) (Important actions)
WARNING
Do not install the unit in a place where large amounts
of oil, steam, organic solvents, or corrosive gases,
such as sulfuric gas, are present or where acidic/
alkaline solutions or sprays are used frequently.
These substances can compromise the performance
of the unit or cause certain components of the
unit to corrode, which can result in electric shock,
malfunctions, smoke, or re.
To reduce the risk of shorting, current leakage,
electric shock, malfunctions, smoke, or re, do not
wash the controller with water or any other liquid.
To reduce the risk of electric shock, malfunctions,
smoke or re, do not operate the switches/buttons or
touch other electrical parts with wet hands.
To reduce the risk of re or explosion, do not place
ammable materials or use ammable sprays around
the controller.
CAUTION
To reduce the risk of damage to the controller, do not
directly spray insecticide or other ammable sprays
on the controller.
To reduce the risk of electric shock or malfunctions,
do not touch the touch panel, switches, or buttons
with a pointy or sharp object.
Precautions during installation
WARNING
Do not install the controller where there is a risk of
leaking ammable gas.
If ammable gas accumulates around the controller, it
may ignite and cause a re or explosion.
Properly dispose of the packing materials. Plastic
bags pose suffocation hazard to children.
To reduce the risk of injury or electric shock, before
spraying a chemical around the controller, stop the
operation and cover the controller.
To reduce the risk of injury or electric shock, stop
the operation and switch off the power supply before
cleaning, maintaining, or inspecting the controller.
Properly install all required covers to keep moisture
and dust out of the controller. Dust accumulation and
water can cause electric shock, smoke, or re.
To reduce the risk of injury and electric shock, avoid
contact with sharp edges of certain parts.
To avoid injury from broken glass, do not apply
excessive force on the glass parts.
To reduce the risk of injury, wear protective gear
when working on the controller.
Precautionsfor movingor repairing the controller
WARNING CAUTION
The controller should be repaired or moved only by
qualied personnel. Do not disassemble or modify the
controller.
Improper installation or repair may cause injury,
electric shock, or re.
To reduce the risk of shorting, electric shock, re,
or malfunction, do not touch the circuit board with
tools or with your hands, and do not allow dust to
accumulate on the circuit board.
Additional precautions
To avoid damage to the controller, use appropriate tools to
install, inspect, or repair the controller.
AT-50A is designed for exclusive use with the Building
Management System by Mitsubishi Electric. The use of this
controller for with other systems or for other purposes may
cause malfunctions.
To avoid damage to the controller, do not overtighten the
screws.
To avoid discoloration, do not use benzene, thinner, or
chemical rag to clean the controller.To clean the controller,
wipe with a soft cloth soaked in water with mild detergent,
wipe off the detergent with a wet cloth, and wipe off water
with a dry cloth.
To avoid damage to the controller, provide protection against
static electricity.
●Nomenclature

4
5
Function List
The table below summarizes the functions that are available on the AT-50A.
Refer to the pages listed for details.
Function Description Page
Unit Operation
ON/OFF Operation Switches the ON/OFF operation of the units such as air conditioning
units. The LED on the Collective ON/OFF button will light up when one
or more units are in operation and off when all units are stopped. 18
Mode Switches the mode “Cooling/Dry/Fan/Auto/Heating” for each group or all
groups. (Switches the mode “Bypass/Heat recovery/ Auto” for LOSSNAY
groups.) 18
Set Temperature Sets the set temperature for each group or all groups. 20
Fan Speed Adjusts the fan speed for each group or all groups. 21
Air Direction Adjusts the air direction for each group or all groups. 21
Louver Enables/disables the louver for each group or all groups. 21
ON/OFF Operation
for Interlocked
Ventilation
The ON/OFF operation of the interlocked ventilation unit is interlocked
with the ON/OFF operation of the air conditioning unit. The interlocked
ventilation units can be independently operated for ON (High/Low)/ OFF
for each group or all groups. (When the ventilation unit is interlocked
with the air conditioning unit, the ventilation mode cannot be used.)
21
Collective Operation The following functions can be collectively executed on multiple groups:
Setback, Schedule, Mode, Temperature Correction, RC Prohibition. 19
38
Time and
Schedule
Date and Time Sets the date, time, and display formats. The current time will appear at
the top right corner of the HOME screen. 27
Weekly/1-day
schedule
• Allows the user to set the Weekly schedule for each group.
• Maximum of 16 events can be scheduled for each day.
• The types of actions that can be scheduled are as follows: ON/OFF,
Mode, Set Temperature, Fan Speed, Air Direction, and Remote
Controller Operation Prohibition.
• Maximum of 12 patterns can be congured for the Weekly schedule,
and 5 for 1-day schedule.
• Two types of weekly schedule (Summer/Winter) can be set.
• 1-day schedule overrides the Weekly schedule.
27
Setback Control This function helps keep the indoor temperature in the
temperature range while the units are stopped and during the
time this function is effective. 35
Disabling scheduled
operation Scheduled operation can be temporarily disabled.
This setting must be set to OFF to run scheduled operation. 22
System
Management System-Changeover
Automatically switches the entire system (all indoor units that are
connected to the same outdoor units) to Cooling or Heating by
periodically monitoring the room temperature and the preset temperature
of each group and determining the best operation mode.
• The System-Changeover function is not available for the following
types of products: Simultaneous Cooling/Heating units (with automatic
mode change function), Mr. SLIM®, LOSSNAY, and DIDO controller.
59
*1: Available functions vary depending on the unit type. Only the functions that are supported by the connected units can
be controlled from the AT-50A.
*1
Function Description Page
Restriction
Settings
Lock Buttons
Locks the following buttons: Collective ON/OFF, F1, F2, and Main
Menu.
Locks the following functions: ON/OFF, Mode, Set Temp, Fan
Speed, and Schedule ON/OFF.
11
23
42
Set Temperature
Range Limit Limits the available temperature range for the local remote
controllers (each group or all groups). 44
Prohibit Remote
Controller
Locks the following buttons on the local remote controllers: ON/
OFF, Mode, Set Temperature, and Filter Reset buttons (collectively
or by group) 46
Operation Mode
Selection Limit
When set as the main controller, operation of the following modes
with the local remote controllers can be prohibited.
When cooling is prohibited: Cooling, dry, automatic cannot be
chosen.
When heating is prohibited: Heating, automatic cannot be chosen.
When cooling/heating is prohibited: Cooling, dry, heating, automatic
cannot be chosen.
48
Basic Settings
Display Format
Selects the display formats for the following items: Display
language, temperature unit, room temperature, display or non-
display of Cooling/Heating mode icons (during Auto mode),
backlight timer, and group names.
50
Function Key Setting The F1 button and the F2 button can be set as a run button of the
following collective operation: Setback, Schedule, Operation Mode,
Temperature Correction, Remote Controller Prohibition. 54
HOME screen
Operation Mode
Setting
When the Group icon is touched, the action differs depending on
the operation mode. Default is set to the operation mode 2.
Operation mode 1: Turns ON/OFF the units in the group whose
Group icon is touched.
Operation mode 2: Displays the check mark when Group icon is
touched. Touch the Group icons of the groups
to be operated, and then touch the “OPERATE”
button to move to the Group screen. Multiple
groups can be selected. Use this mode when
operating the multiple groups collectively.
Operation mode 3: Directly moves to the Group screen of the
group whose Group icon is touched.
41
Volume Control Sets the sound volume and screen brightness. 55
Maintenance
Error
If an error occurs on the AT-50Acontroller or the units and
controllers it controls, the LED on the Collective ON/OFF button
will blink. If an error occurs on the indoor or LOSSNAY units, will
appear on the corresponding group icon on the HOME screen. The
error code can be veried and reset on the Status List screen.
57
Filter sign Filter Icon will appear on the HOME screen when the lter is due
for cleaning. The icon can be removed from the Status List screen. 57
Touch Panel
Cleaning Mode Disables the touch panel to allow the user to clean the panel. 61
Touch Panel
Calibration Mode Calibrates the touch panel if the touch panel does not respond
correctly when touched. 56
Miscellaneous
External input
Receives input signals from external devices and start/stop all
groups of units or permit/prohibit operations from the local remote
controllers. Requires cable connections.
External output
Outputs the operation status of the units (ON/OFF) or error signals
to external devices collectively, using contact signals. Requires
cable connections.
*1
*1
*1
*1
*1

6
7
2 Collective ON/OFF Button *1
The Collective ON/OFF button enables the collective ON/OFF function that allows the user to
turn on/off the air conditioning units, LOSSNAY, and DIDO controllers in all groups collectively.
The indicator corresponds to the operation status of controlled units.
Unlit : Indicates that all units are stopped.
Lit : Indicates that one or more units are in operation.
Blink : Indicates that an error is occurring.
AT-50Afeatures a 5" color LCD touch panel. Touch panel displays the operation status of the
units. Function settings such as week schedule settings are accessed through the touch panel.
The backlight lights up when the panel is touched, and lights off after certain period of time. The
backlight will remain lit as long as an error exists.
1Display/Touch panel
3 Function 1 Button (F1), 4Function 2 Button (F2) *1 *2
Desired functions from the following list can be assigned to the F1 and F2 buttons.
(Setback/Schedule/Operation Mode/Temperture Correction/Remote Controller Prohibition)
The functions to assign to these buttons can be selected from the Function Key Setting on the
Control Panel.
The indicator on the buttons indicates the enabled/disabled status of the function.
Unlit : The assigned function is disabled.
Lit : The assigned function is enabled.
The indicators on the F1 and F2 buttons will be lit or unlit when the functions that are assigned to
the F1 and F2 buttons are enabled or disabled from the Collective Operation panel.
5Power indicator
The power indicator lights up when the power to AT-50A is turned on.
Unlit : Power OFF
Lit : Power ON
Touch panel / Buttons
*1 When the button is pressed while the operation is prohibited, the LED will blink twice.
*2 Buttons 2, 3, and 4are available only on the HOME screen.
Names and Functions of Controller Components
Product features
3
12
4
5
The AT-50A described in this manual is a centralized controller with color LCD touch panel for air
conditioning units, LOSSNAY, and General equipment using the Mitsubishi Electric DIDO controller (PAC-
YG66DCA).
AT-50Acan control up to 50 units/50 groups. (*1)
AT-50A controls and monitors the air conditioning units of each group. AT-50A also can control detailed
scheduling and prohibits the local remote controller operation in each room (group), which may lead to
energy savings.
Basic operations are accessed through the AT-50A touch panel. ON/OFF, F1, and F2 operations that
control air conditioning units collectively are accessed by using buttons next to the touch panel.
AT-50Adisplay screen consists of three types, corresponding to the usage.
HOME screen : Monitoring screen to monitor the operation status of the units
(described in this Instruction Book)
Main Menu screen : Setting screen to set the functions such as schedule settings
(described in this Instruction Book)
Maintenance screen : Initial setting screen to set the basic systems such as group settings
(described in the Installation Manual)
* 1 Group: minimum unit to be controlled by AT-50A
A group consists of units (16 units maximum).
Buttons 2, 3, and 4have indicators on the top.

8
9
Screen Configuration [HOME screen]
1. How to switch the HOME screen
Touch tubs to change the display format.
2. How to move to the Main Menu screen
3. How to move to the Maintenance screen
Refer to the Installation Manual.
: Displays the GRID screen.
: Displays the GRID (zoom-out) screen.
: Displays the GRID (zoom-in) screen.
: Displays the LIST screen.
: Displays the GROUP screen.
: Displays the Main Menu screen.
GRID screen
Zoom-out screen
To the GRID
(zoom-in) screen To the GRID
(zoom-out) screen
Zoom-in screen
HOME screen
To the GROUP screen
To the GRID screen
To the LIST screen
To the GRID screen
To the Main Menu screen
To the HOME screen
GROUP screen
To the LIST
screen
To the GROUP
screen
LIST screen
[Main Menu screen]

10 11
Buttons [HOME screen]
① ② ③ 󱦯④ ⑤
⑨ ⑩⑦⑧ ⑧ ⑪
⑯ ⑰ ⑱
⑮
󱦱
⑥
⑥
󱦱
⑪
⑫
⑥
⑭
⑬
⑲
Note: Depending on the units to be controlled and AT-50A settings, available button operations and displays vary.
: While the icon is displayed on the button, the operation is locked.
Flips through pages.
aPage button
Switches the group to be displayed.
cGroup button
Displays the GRID screen.
1GRID screen button
Displays the LIST screen.
2LIST screen button
Displays the GROUP screen.
3GROUP screen button
Displays the MAIN MENU screen.
4MAIN MENU screen button
Press this button to bring up the collective operation
panel.
(Refer to P19 for information about the collective
operation panel.)
7 “Access the Collective Operation
panel” button
Selects/Deselects groups collectively. Adds check
marks to all selected icons.
9Select All button
Moves to the GROUP screen of the selected group.
Moves to the Multiple group selection screen when
multiple groups are selected. Refer to P23 "Multiple
group selection screen" for details.
0Move-to-the-selected-group button
Shows/Hides the display for the information below.
• Set temperature
• Scheduled operation is enabled.
bDisplay selection button
Switches the operation mode of the air conditioning
units and LOSSNAY.
dMode button
Adjusts the set temperature by using the + and –
buttons. Set temperature appears above the button.
eSet temperature button
Use this button to temporarily disable the scheduled
operation on the display.
The indicator on the button will remain lit when the
function is enabled.
The scheduled operation will not be run when the icon
is displayed.
f “Disable scheduled operation” button
Displays the popup window of Interlocked
ventilation (LOSSNAY)/Air direction/Fan speed/
Louver setting screen.
* Refer to P21 "Interlocked ventilation units
(LOSSNAY)/Fan speed/Air direction/Louver
settings" for the popup window.
g Interlocked ventilation (LOSSNAY)/
Air direction/Fan speed/Louver
setting button
Operation differs depending on the operation mode.
Operation mode 1
Turns ON/OFF the units in the group whose Group
icon is touched.
Operation mode 2
Switches the Group icon between Selected
(checked) and Deselected (unchecked).
(Default) Displays the check mark when Group
icon is touched.
Operation mode 3
Directly moves to the Group screen of the group
whose Group icon is touched.
6 Group icon (operation status display) button
Changes the operation to ON/OFF.
⑱ON/OFF button
Switches LOSSNAY fan speed between Lo and High.
⑲Fan speed selection button
Displays the current time.
1Current time
Displays the Current page/Total page number.
2Current page/Total pages
Locks or unlocks the buttons on the AT-50A.
Press and hold the button for two seconds to lock or
unlock the buttons.
The locked/unlocked status icon will appear on the
buttons.
5Operation lock button
Locked Unlocked
A password may be required to unlock certain buttons.
Select the buttons to be locked from the Lock Buttons
(Refer to P42.) on the Main menu.
If no items have been selected, the operation lock
button will not appear on the screen.
: Displays the zoom-out screen.
: Displays the zoom-in screen.
8 GRID (zoom-out/zoom-in) screen button
HOME screen
GRID (zoom-out) screen GRID (zoom-in) screen
Displays the operation status of all groups.
The button layout 6varies with the number of the
registered groups.
Displays the detailed operation status of each
group. (10 groups on 5 pages maximum)
LIST screen GROUP screen
Displays the detailed operation status of each
group with group name. (5 groups on 10 pages
maximum)
Displays the detailed operation status of each
group. Sets group operations.
(When the air conditioning units are controlled)
Note: Display ⑨and ⑩vary depending on the operation
mode. Refer to P17 "Operation mode" for details.
Sample displays above are for default setting: Operation
mode 2.
Operation mode 1
Operation mode 2
Operation mode 3
LOSSNAY

12
13
Icon Displays [HOME screen]
(1) GRID (zoom-out) screen
(2) GRID (zoom-in) screen
[ON (BG Color: blue)]
Group No.
•Filter sign
•Check mark
[OFF (BG Color: black)] [Error (BG Color: yellow)]
Error display
Communication error
at startup
[Air conditioning ]
[ON (BG Color: blue)]
•Check mark
•ON/OFF operation
prohibition
Group No.
•Mode
•Filter sign:
Schedule (enable/disable)
Room temperature
Interlocked ventilation
(LOSSNAY) operation
[OFF (BG Color: black)]
[LOSSNAY group]
[ON (BG Color: blue)] [OFF (BG Color: black)]
[OFF (BG Color: black)]
[ON (BG Color: blue)]
[General equipment group]
Filter sign:
LOSSNAY icon
Schedule (enable/disable)
Schedule (enable/disable)
General equipment icon
[Error (BG Color: yellow)]
[Air conditioning unit/LOSSNAY/General equipment group]
Error display
Error:
Displays when an error occurs.
Startup (communication) error:
Displays as well as the error display when a
startup (communication) error occurs.
Filter sign:
Displays when lter needs maintenance.
During scheduled operation:
Displays during scheduled operation.
When the "Disable scheduled operation"
button is enabled:
Displays when the "Disable scheduled
operation" button is enabled.
Room temperature:
Display ranges 8-39ºC (46-102ºF). When the
temperature is beyond the range, 8ºC (46ºF) or
39ºC (102ºF) will blink on the display.
When multiple air conditioning units (indoor
units) are registered to a group, current indoor
temperature on the main indoor unit is displayed.
Interlocked ventilation (LOSSNAY):
Displays when there are ventilation units
interlocked with the air conditioning (indoor)
units in the group.
Icon color indicates the operation status (Blue:
ON, Black: OFF).
General equipment icon:
Displays the General equipment type.
(3) LIST screen
Display selection button
Display selection button
[ON (BG Color: blue)] [OFF (BG Color: black)] [ON (BG Color: blue)]
Group No. Room (Group) name Schedule (enable/disable) Schedule (enable/disable)
Interlocked ventilation (LOSSNAY) operation**
•Check mark
•Mode
•Filter sign:
Room
temperature Set temperature* Room
temperature
Interlocked
ventilation**
ON: blue
OFF: black
Room
temperature
•Mode
•Filter sign:
* When the temperature offset function is
enabled, the temperature will appear in
the green outline font.
** Interlocked LOSSNAY
does not appear
during operation.
[LOSSNAY group]
Group No. Room (Group) name Schedule (enable/disable) Schedule (enable/disable)
[OFF (BG Color: black)]
[ON (BG Color: blue)] [OFF (BG Color: black)] [ON (BG Color: blue)]
[OFF (BG Color: black)]
•Check mark •LOSSNAY icon
•Filter sign: •LOSSNAY icon •LOSSNAY icon
•Filter sign:
[General equipment group]
Group No. Room (Group) name Schedule (enable/disable) Schedule (enable/disable)
[ON (BG Color: blue)] [OFF (BG Color: black)] [ON (BG Color: blue)]
[OFF (BG Color: black)]
•Check mark •General equipment icon •General equipment icon
【Error (BG Color: yellow)】
【Air conditioning
unit/LOSSNAY/General
equipment group】
Error display
•General equipment icon

14
15
Icon Displays [HOME screen]
GROUP screen
[Air conditioning unit group]
During operation
Group No.
Mode
Error
Startup (communication)
error
Filter sign
Scheduled operation
/Disabled
Disable scheduled
operation function: ON
Disable scheduled
operation function: OFF
Interlocked ventilation (LOSSNAY)
Air direction
Fan speed Louver
Group name
Room temperature
Set temperature
Temperature Correction
While the unit is stopped
Interlocked ventilation
(LOSSNAY)
When the Temperature
Correction function is
enabled
[LOSSNAY group]
During operation
Fan speed display
General equipment icon
[General equipment group]
During operation
While the unit is stopped
While the unit is stopped
Error:
Displays when an error occurs.
Startup (communication) error:
Displays as well as the error display when a
startup (communication) error occurs.
Filter sign:
Displays when lter needs maintenance.
During scheduled operation:
Displays during scheduled operation.
When the "Disable scheduled operation"
button is enabled:
Displays when the "Disable scheduled
operation" button is enabled.
Room temperature:
Display ranges 8-39ºC (46-102ºF). When the
room temperature is beyond the range, 8ºC
(46ºF) or 39ºC (102ºF) will blink on the display.
When multiple air conditioning units (indoor
units) are registered to a group, current indoor
temperature on the main indoor unit is displayed.
When the Temperature Correction function
is enabled:
When the Temperature Correction function is
enabled, the corrected temperature will appear
in the green outline font.
Interlocked ventilation (LOSSNAY):
Displays the operation status of the ventilation
that is interlocked with the air conditioning
(indoor) units.
General equipment icon:
Displays the General equipment type.
Note : While the icon is displayed on the button, the operation is locked.

16
17
Basic Operations
Screen selection
GRID (zoom-out) screen appears at the initial startup.
Select the desired screen.
1
22
1
33
1
2
3
• Operation mode 1: appears in the area marked 2.
Stops or starts the operation of the air conditioning units through Group icon 1.
• Operation mode 3: Nothing appears in the area marked 2.
Moves to the Group screen by touching the Group icon 1.
* ON/OFF operation lock
When AT-50A restricts its own ON/OFF operation, the icon above will appear. The ON/OFF
operation will be disabled.
■Displays the emergency stop level-signal input* ■Displays ON/OFF level-signal input
When the group icon button is set to the operation mode 1
Group selection
• Operation mode 1, 2, 3
When the Group icon 1is touched, the action differs depending on the operation mode.
Operation mode consists of three modes (shown below), and default is set to the
operation mode 2. Refer to P41 for changing the mode.
• Operation mode 2: appears in the area marked 2.
Allows the user to select groups to be operated. Moves to the
Group screen.
Touch the Group icon 1to select the group to be operated. Groups can be selected on
the GRID or the LIST screens.
Touch the Group icon 1to switch between displaying check marks (selected) and hiding
check marks (deselected). Touch 3to select all groups.
Touch the Group icons of the groups to be operated, and then touch 2to move to
the Group screen.
The number of selected groups = 1 : The selected group appears on the Group screen.
Refer to P18 "Group screen" for details.
The number of selected groups > 1 : The Multiple group selection screen appears.
(The selected groups can be operated collectively.)
Refer to P23 "Multiple group selection screen" for details.
* During receiving the external input signal
The ON/OFF function cannot operate when the following displays appear.
The button cannot
be operated.
GRID (zoom-out) screen
GRID (zoom-in) screen LIST screen

18
19
Basic Operations
Operation Screen (Group screen)
Mode (useable only while the unit is in operation)
Touch 2to access the modes in order of "Cooling, Dry, Fan, Auto, and Heating."
The selected mode will appear in the area labeled 1.
ON/OFF operation
Touching 3allows the indoor units in the displayed group to start/stop.
When interlocked ventilation units (LOSSNAY) are connected, the ventilation units work in
conjunction with indoor units.
ON: OFF:
*Refer to P51 for Auto mode cooling/heating settings.
*To operate an indoor unit in the heating (cooling) mode
while the indoor unit is already operating in the opposite
mode, the operation mode cannot be changed until all of
the indoor units operate in the same mode or stop. In this
case, the mode 1will blink.
*Available mode varies depending on the model.
Modes that are unavailable do not appear.
*The operation mode which is restricted by this controller or
other controllers cannot be selected.
Basic operations (GROUP screen)
1
2
5 3
4
Auto heating
display Auto cooling display
Operating the Air conditioning unit group
[Green] [Black]
Collective Operation Panel
This panel has the functions that can be
executed collectively. (Setback, Schedule, Mode,
Temperature Correction, RC Prohibition)
Touching the icon at the left bottom of the
icon on the GRID or the LIST screen will bring up
the Collective Operation panel.
Each button has an indicator and the function
name.
The indicators on the buttons show which
functions are assigned to which buttons.
Indicator
Function
Collective
Operation button
▪ Before using the Collective Operation buttons, the groups to execute collective settings on must be selected,
and the parameters must be set from Main Menu>Operation Setting>Collective Operation Setting.
▪ If appears on an icon of a given function, the function is not available.
Performing Collective Operation
1 On the GRID or the LIST screen, touch the button that brings up the Collective Operation Panel.
2 Select the Collective Operation button on the Collective Operation panel.
3 Press OK on the Collective Operation panel.
(Go to 4if Setback or Mode was selected. Otherwise, the setting is complete.)
4 If Setback or Mode was selected, take the following steps.
When Setback is selected When Mode is selected
Select the desired item, and touch OK.
▪ Scheduled: Scheduled operation is enabled. The units will
operate according to the Setback Control settings.
(P35)
▪ Unscheduled : Scheduled operation is disabled. The units will
operate according to the Collective Operation
settings (Setback). (P39)
▪ OFF : The Setback function will not be executed.
*Regardless of how the above settings are made, the Setback
function will not be executed if the operation switch is on.
▪ Touch OK on the popup window.
▪ Select a mode on the window that will appear.
▪ Press OK.
*A blinking indicator on a button indicates that the function that corresponds to the button cannot be
collectively executed. Check the settings for the “Collective Operation Setting.”

20
21
Temperature setting (useable only while the unit is in operation)
Touch to adjust the temperature setting.
(* When fan mode is selected, the temperature setting cannot be made.)
The temperature can be set within the following range.
Cool/Dry : 19°C - 30°C / 67°F - 87°F
Heat : 17°C - 28°C / 63°F - 83°F
Auto : 19°C - 28°C / 67°F - 83°F
*Available set temperature range varies depending on the mode or model.
4
Interlocked ventilation units (LOSSNAY)/
Fan speed/Air direction/Louver settings
A : Interlocked ventilation units (LOSSNAY)
* When interlocked ventilation units are not connected, [A] does not appear.
B : Fan speed (useable only while the unit is in operation)
* [B] does not appear when the model does not have this function.
* Available fan speed varies depending on the model.
C : Air direction (useable only while the unit is in operation)
* [C] does not appear when the model does not have this function.
* Available air direction varies depending on the model.
D : Louver (useable only while the unit is in operation)
* [D] does not appear when the model does not have this function.
After setting A through D , touch the OK button.
A C
BD
Stop Low High
Setting 1 Setting 2 Setting 3 Setting 4 Setting 5 Swing Auto
Quiet Low Medium High Auto
ON OFF
Touch 4to show the Interlocked ventilation
units (LOSSNAY)/Fan speed/Air direction/
Louver settings screen.
Basic Operations
Checking the status of the collective operation functions
1 On the GRID or the LIST screen, touch the button that brings up the Collective Operation panel.
2 Check the color of the indicator on the collective operation button.
(Yellow) : The function is enabled.
(Gray) : The function is disabled.
Checking the Function button settings
1 On the GRID or the LIST screen, touch the button that brings up the Collective Operation Panel.
2 Check what it says on the indicator on the collective operation buttons.
: The function is assigned to the F1 button.
: The function is assigned to the F2 button.
: The function is not assigned to the F1 or F2 button.

22
23
Basic Operations
Operating the General equipment group
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.
Displays that are not marked by numbers on the screen are the same as those on the Air conditioning unit group screen.
“Disable scheduled operation” button
The “Disable scheduled operation” function is ON. The “Disable scheduled operation” function is OFF.
Use button 5(P18) to temporarily disable the scheduled operation.
When the function is enabled, the indicator on button 5will light up in yellow.
When this function is enabled, the icon will appear on the screen, and the scheduled
operation will not be run.
Operating the LOSSNAY group
Mode
Touch (1) to access the modes in the order "Bypass,
Heat recovery, Auto."
The selected mode will appear in the area marked (2).
Displays that are not marked by numbers on the screen are the same as those on the Air conditioning unit group screen.
*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).
(2) (1) (3) (4)
Multiple group selection screen * To operate the Air conditioning unit group
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)
■Displays the emergency stop level-signal input* ■Displays ON/OFF level-signal input
The button cannot
be operated.
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.
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.
Check the selected groups.
Touch (1) to show the
selected group conrmation
screen.

24
25
Menu Screen
The Main Menu screen allows the user to configure the basic settings.
To access the [Main Menu] screen, touch the icon at the right top corner of the [HOME] or the
[Menu] screen.
1
2
3
4
3
4
Main Menu screen
(Top screen)
2
1
1[HOME] button
Accesses the [HOME] screen.
4Service Menu button
Accesses the maintenance menu for service personnel. Normally, general users do no need to change
any settings in the maintenance menu.
3Touch Panel Cleaning button P61
Touch this button to access the screen that will not respond when touched (except when the numbers
in the four corners are touched in a specified order), allowing the user to clean the touch panel without
accidentally changing the settings.
2Back button
Returns the screen to the previous screen.
(When touched on the Main Menu screen, returns the screen to the HOME screen.)
1Operation Setting
(1) Time and Schedule Sets the date, time, schedules, and Setback control. P26
(2) Collective Operation Setting Sets the collective operation settings. P38
(3) Group Icon Setting
Changes the behavior of the group icon on the HOME screen.
* Three setting options are available. P41
2Restriction Settings
(1) Lock Buttons Locks the buttons and the functions on the AT-50A. P42
(2) Set Temperature Range Limit Sets the temperature range for the local remote controllers. P44
(3) Prohibit Remote Controller Locks the buttons* on the local remote controllers.
*ON/OFF, Mode, Set Temperature, and Filter Reset buttons P46
(4) Operation Mode Selection
Limit Limits the operation mode selection. P48
3Control Panel
(1) Display Format Selects the display formats* on the Home and Menu screens.
* Display language, temperature unit, display or non-display
of room temperature and Cooling/Heating mode icons
(during Auto mode), and backlight timer, and group names.
P50
(2) Function Key Setting Assigns the functions to the F1 and F2 buttons.
* Setback, Schedule, Mode, Temperature Correction, and RC
Prohibition can be assigned.
P54
(3) Volume Control Sets the sound volume and screen brightness. P55
(4) Touch Panel Calibration Calibrates the touch panel. P56
4System Management
(1) Status List Displays errors and filter signs. P57
(2) System-Changeover Selects the System-Changeover* setting.
* Automatically switches the entire system to Cooling or
Heating based on the room temperature and the preset
temperature of each group.
* This function cannot be used when the Operation Mode
Selection Limit function is used.
P59

26 27
Usage - Main Menu Settings
Operation Setting
Main Menu > Operation Setting
1
2
3
BSetting the operation schedule
Main Menu > Operation Setting > Time and Schedule > Set Schedules
[Note] If a specific pattern is assigned to multiple groups or days and the configuration of the pattern is changed, the
change will be reflected on all the groups and days.
Use a different pattern number to save a given configuration of events if you do not want the changes to be
reflected on the groups and days to which the pattern is assigned.
Types of schedules Number of operation patterns
Weekly Use to assign an operation pattern for each day of the week to be
executed every week. Maximum 12 patterns
One Day Use to assign unique operation patterns for specic dates (up to seven
days in advance, including the current date). Maximum 5 patterns
・The initial date/time setting is 1/1/2011 12:00AM.
・If the clock is set forward, the operations that were scheduled to have taken place before the new
time will be cancelled.
ASetting the date, time, and display format
Date tab Time tab
4
5
Main Menu > Operation Setting > Time and Schedule > Date and Time
3
2
1
Main Menu > Operation Setting > Time and Schedule
1Time and Schedule
A
B
C
D
1. Touch the A Date and Time button on the [Time and Schedule] screen.
2. On the [Date and Time] screen, touch the 1 [Date] tab to set the date, or 2 [Time] tab to set the time.
3. Using the 3 buttons, set the following items: [Month/Date/Year] and [Hour/Minute/AM・PM].
4. On each tab, select one of the three display formats by checking the 4 checkbox next to the desired
format.
5. Touch the 5Save button.

28 29
1. Touch the [Set Schedules] button on the [Time and Schedule] screen to access the Select Group and
Days/Dates screen.
Schedule Setting Procedures
• [Weekly] screen
Displays the pattern numbers that are assigned to groups and days.
( ) will appear on the top left corner of the cell to which One-
day schedule is assigned.
One-day pattern will override the Weekly pattern.
The “Seasonal Settings” button will appear.
On the button, the effective period that was selected on the
Weekly Tab will appear.
The effective period can be changed on the “Seasonal Settings”
screen that will appear when the button is pressed.
• [One day] screen
Displays the One-day schedule patterns that are assigned to
specific dates.
[One Day] tab
Day (Date) grid
[Weekly] tab
Current tab
name On the [One day] tab, a 7-day schedule including today will be displayed.
2. Touch the Weekly or One Day tab.
When the Weekly tab was selected, the “Seasonal settings” must be made as follows.
(1) Touch the [Seasonal settings] button on the Select Group and Days/Date screen.
(The “Seasonal settings” button appears only on the [Weekly] screen.)
(2) Touch the button 1, and select the use or non-use of Weekly2.
: Use Weekly2
: Do not use Weekly2
(3) Use the 2buttons to select the use or non-use
of Weekly1 and the effective period for Weekly2.
If Weekly2 is set to “Do not use Weekly2,” the effective
period cannot be set.
(4) Pressing the 3OK button will take the screen back
to the Select Group and Days/Date screen, and the
effective period on the “Seasonal Settings” button will be
updated.If the effective periods for Weekly1 and Weekly2
overlap, the setting cannot be completed.
3
1
2
Step 4 Select days or dates.
Schedule setting flowchart
Step 1 Select the Weekly or One Day tab.
Step 3 Select a group.
Step 5 Assign a pattern to the selected
days or dates.
Step 6 Configure the pattern.
Select Group and Days/Dates screen
Select Pattern screen
Edit Pattern screen
Set Schedule screens
Weekly One day
Seasonal settings screen
Step 2 Validity period.
Usage - Main Menu Settings
Operation Setting (cont'd)
"Seasonal Settings" btutton

30
31
① To configure a new pattern using a blank pattern
Touch a blank pattern number, then touch the button to access the Edit Pattern screen.
⇒See Step 5.
If one or more patterns have been configured and saved, the message "When copying other
setting patterns to edit, select the pattern to be copied, and touch the OK button." will appear.
Touch the [OK] button to create a new pattern using a blank pattern. To use an existing
pattern as a template, select a desired pattern and then touch the [OK] button.
3. Select the cell where a specific group and a day (date) intersect to assign a pattern.
* Patterns can be copied, pasted, or deleted on the Select Group and Days/Dates screen.
e.g., The weekly schedule of a specific group can be copied and pasted to another group,
or the schedule pattern of a specific day can be copied and pasted to another day.
Refer to P32 for details.
4. On the Select Pattern screen, select [--] (deselected) or one of the 12 or 5 patterns (between [P01] and
[P12] on the Weekly tab OR between [P01] and [P05] on the One Day tab). Each pattern can be newly
configured, copied and pasted, or edited. See 1, 2, and 3below for details.
Touch a schedule pattern to select it.
Black pattern numbers indicate that the patterns have already been configured, and the white ones
indicate blank patterns.
• Appears only if the selected pattern has been configured.
• The functions not supported by the selected group will appear
underlined in red, and they will not be executed.
* Touch the < > buttons to check the actions for each scheduled
event.
* Refer to P34 for icon definitions.
Operation pattern numbers
Schedules events for the selected pattern
5. On the Edit Pattern screen, touch an event number to edit its contents.
*1 The scheduled actions for each event will be displayed over two pages.
Use the scroll buttons to switch between the pages.
*2 On the Edit Pattern screen, the events of a specific pattern can be copied and pasted to another
pattern.
Refer to P32 for details
Scroll button
ON/OFF, Mode, Set Temperature, and Fan Speed Air Flow Direction, Prohibit Remote Controller Operation
Event No. Scheduled actions Event No. Scheduled actions
② To copy an existing pattern and paste it to selected days or dates
Touch a pattern number to select it, then touch the [OK] button to return to the Select Group and Day/
Date screen. To set the schedule for other groups or days/date ⇒See Step 2.
When setting is complete ⇒See Step 10.
③To edit an existing pattern
Touch an existing pattern number, then touch the button to access the Edit Pattern screen.
⇒See Step 5.
If the selected pattern number is assigned to other groups or days, the message "This pattern
is used for another schedule. To use different pattern number, select the number, and touch
the OK button." will appear. To change the schedule of the day or date that was selected in
Step 3 above alone, select a new blank pattern number and then touch the [OK] button. To
change the setting of all groups and days to which the pattern is assigned, just touch the [OK]
button.
Usage - Main Menu Settings
Operation Setting (cont'd)

32
33
* Functions that can be included in each event are as follows: Execution Time, ON/OFF, Mode, Fan
Speed, Air Direction, Set Temperature, and Local Remote Controller Operation Prohibition settings.
* Refer to P34 for icon definitions.
* The Set Temperature must be set to a temperature within the range that was specified in the Initial
Settings 1/Basic Settings under the Service Menu.
Refer to the Installation Manual to change the temperature setting range.
7. When finished making the settings, touch the OK button to return to the Edit Pattern screen.
8. Repeat Steps 5 through 7 above to set as many events and the execution time for the events as
necessary.
9. When finished, touch the Return button to return to the Select Group and Days/Date screen.
To set the schedule for other groups or days/date ⇒See Step 2.
When setting is complete ⇒See Step 10.
10 . To exit the screen and return to the “Time and Schedule” screen, press on the “Select Group and
Days/Date” screen.
Change values with the
buttons. Touch the icons repeatedly to select
the desired one.
Click on the checkbox next to the button to activate the Copy, Paste,
Delete, and Insert buttons.
Copying, pasting, deleting, and inserting settings
6. Set the time and the actions for the selected event number.
Usage - Main Menu Settings
Operation Setting (cont'd)
1. Touch the item to be copied.
* Items that can be copied include the weekly schedule for a group, the pattern assigned to a specific
day, or the event that is scheduled to take place at a certain time.
* A red checkmark will appear on the selected item(s).
Copying and pasting the existing settings
(Example) To copy the weekly schedule for a group
(Example) To copy an event (a set of actions executed at a scheduled time)
2. Touch the Copy button. The selected item will be highlighted in blue.
3. Touch the copy destination.
* Multiple copy destinations can be selected.
* A red checkmark will appear on the selected item(s).
4. Touch the Paste button.
5. Touch the OK button on the window that pops up.
1. Touch the items to be deleted.
* Items that can be deleted at once include the weekly schedule for a group, the pattern assigned to a
specific day, or the event that is scheduled to take place at a certain time.
* Multiple items can be deleted at once.
Deleting selected settings
2. Touch the Delete button.
3. Touch the OK button on the window that pops up.

34
35
1. Touch a row to insert an event above it.
* A red checkmark will appear on the selected row.
2. Touch the Insert button. Ablank row will appear above the selected row.
* If the maximum number of events have been set, no more rows can be inserted.
Inserting an event
Icon Definitions
Usage - Main Menu Settings
Night setback function is a function that prevents indoor dew or extreme temperature rise by heating/
cooling automatically when the room temperature goes outside of the specific range during the set time
period.
CSetting the Night setback function
・When the air conditioning group with night setback function is off and when the temperature
exceeds the preset temperature, heating/cooling operation starts.
・If the room temperature is measured by the air-conditioner’s suction temperature sensor, the
temperature may not be correct when the air-conditioner is inactive and the air is not fresh. When
the air-conditioner is inactive, using a remote sensor or a remote control sensor is recommended
to measure room temperature correctly.
・If the temperature setting or ON/OFF operation is prohibited for this unit, Setback operation
cannot be used.
・If the operation mode change is prohibited or the operation mode selection is limited for this unit,
Setback function may not function properly.
When the night setback control is set, air conditioning group operates as shown below.
If “Unscheduled” is selected, the Setback function that were set on the Setback Control screen will not be
executed with the pressing of the Collective Operation button.
In this case, the settings that were made on the “Collective Operation Setback” screen will override the
settings made on the “Setback Control” screen, and the scheduled operation will not run.
1. Touch the CSetback Control button on the [Time
and Schedule] screen.
2.Read the pop-up message, and touch the OK
button to confirm.
1
6
45
7
When the temperature drops below the lower limit temperature
(heating control) When the temperature rises above the upper limit temperature (cooling control)
Setback operation stops
(when the temperature rise
3ºC/5.4ºF or the control
time period is over)
Setback
operation
starts.
Room
temperature
21ºC/69ºF
Heating
On
21ºC/69ºF
Heating
Off Heating On
12ºC/53ºF
Heating
Off
21ºC/69ºF
Setback control time period
Cooling
On
24ºC/75ºF
Cooling
Off Cooling On
28ºC/83ºF
Cooling
Off
24ºC/75ºF
Setback control time period
Setback
operation
starts.
3ºC/5.4ºF
Room
temperature
Upper limit
temperature
28ºC/83ºF
Lower limit
temperature
12ºC/53ºF
24ºC/75ºF
Operation Setting (cont'd)
*1 The icons corresponding to the functions that are not scheduled will not be displayed except in the Edit Pattern popup
screen.
Functions Deselected *1Setting Options
ON/OFF
Mode
Fan Speed
Air Flow Direction
Local remote controller
operation prohibition (ON/OFF)
Local remote controller
operation prohibition (Mode)
Local remote controller
operation prohibition (Set Temperature)
Local remote controller
operation prohibition (Filter Sign Reset)
On [green] Off [black]
Cooling Dry Fan Heating Auto
Bypass Heat Recovery Auto Damper
Quiet Low Mid High Auto
Setting 1 Swing
Permit Prohibit
Auto
Setting 2 Setting 3 Setting 4 Setting 5
Permit Prohibit
Permit Prohibit
Permit Prohibit
Main Menu > Operation Setting > Time and Schedule > Setback Control

36 37
Click OK to close the popup window and return to the “Setback Control” screen. The new settings will
appear on the display section 4on the screen.
Pressing “Cancel” will close the popup window, but the new setting will not be reflected on the display
section 4on the screen.
4. Press the button labeled 5 to set different lower/upper limit temperature for different groups.
The groups whose temperature setting is different from the one for the collective setting will appear
underlined .
5. Select the groups to include from the Group buttons labeled 6. By default, all groups are selected.
6. Touch the 7Save button.
2
3
• The minimum difference between the upper and lower limits is 4ºC (8ºF).
• The temperature range that can be set depends on the connected units.
• The temperature can be set within the following range.
[Upper limit] 19°C - 30°C [19°C - 30°C] / 67°F - 87°F [67°F - 87°F]
[Lower limit] 12°C - 28°C [17°C - 28°C] / 53°F - 83°F [63°F - 83°F]
* [ ] in case of using Mr.SLIM® units.
• The groups that do not support the Setback function cannot be selected.
• The changes that are made while the Setback function is turned on will not be reflected. To have
the settings reflected, turn off the Setback function and then turn it back on. Refer to P19 for how
to turn on/off the Setback function.
• The Setback status can be verified by accessing the “Check Current Settings” screen from the
“Time and Schedule” screen.
DChecking the Weekly/One Day Schedule Settings
1. Touch the [Check Current Settings] button on the [Time and Schedule] screen.
2. Touch the Weekly or One Day tab.
3. Touch the row that corresponds to the group whose schedules you want to check.
Touch the pattern number under a specific day to check the day's schedule that appears under the
pattern numbers.
4. Touch the < > buttons to check the actions for each scheduled event.
Touch the [Close] button to return to the previous screen.
5. To change the schedule settings, touch the Return button to return to the Time and Schedule
screen, and access the Set Schedules screen.
• [Weekly] screen
Displays the pattern numbers that are assigned to groups and
days.
( ) will appear on the top left corner of the cell to which One-
day schedule is assigned.
One-day pattern will override the Weekly pattern.
• [One day] screen
Displays the One-day schedule patterns that are assigned to
specific dates.
[One Day] tab
Day (Date) grid Displays scheduled patterns
[Weekly] tab
Seasonal Settings (Weekly only)
3. Press button 1to bring up the “Control Time
Period” and “lower/upper limit temperature” settings
screen, and make necessary settings.
Setting of night setback control time period
Touch the 2 buttons to set the control time.
Setting of lower/upper limit temperature
Touch the 3buttons to set the upper and lower limits.
When [--] is set, setback control will not be operated.
• Appears only if the selected pattern has been configured.
• The functions not supported by the selected group will appear
underlined in red, and they will not be executed.
* Refer to P34 for icon definitions.
• The effective time for the Night Setback function will appear as a
yellow line on the timeline.
Operation pattern numbers
Schedules events for the selected pattern
Effective time for the Night Setback function
Usage - Main Menu Settings
Operation Setting (cont'd) Main Menu > Operation Setting > Time and Schedule > Check Current Settings

38
39
Main Menu > Operation Setting
To select the groups on which to execute the Collective ON/OFF function
Main Menu > Operation Setting > Collective Operation Setting
2
1
3
2Setting the Collective Operation Settings
2
4
6
1
3
5
1. Touch the 1ON/OFF button on the [Collective
Operation Setting] screen.
2. Read the pop-up message, and touch the OK button
to confirm.
3. Select the groups to include from the Group buttons
labeled A. By default, all groups are selected.
4. Touch the BSave button.
Usage - Main Menu Settings
Select All button
Selects all groups.
Show Group Name List button
Shows a list of group names in a pop-up window.
A
B
・The DIDO controller groups that do not support the Collective ON/OFF function cannot be selected.
To select the groups on which to execute the Collective Operation
(Enable or disable the Setback function)
1. Touch the 2Setback button on the [Collective
Operation Setting] screen.
2. Read the pop-up message, and touch the OK button
to confirm.
3. Touch the C buttons to set the upper and
lower limits. Press the button labeled Dto set
different ranges for different groups. The groups
whose temperature setting is different from the one for
the collective setting will appear underlined .
4.Select the groups to include from the Group buttons
labeled A. By default, all groups are selected.
5. Touch the BSave button.
・The minimum difference between the upper and lower limits is 4ºC (8ºF).
・The temperature range that can be set depends on the connected units.
・The groups that do not support the Setback function cannot be selected.
・The changes that are made while the Setback function is turned on will not be reflected. To
have the settings reflected, turn off the Setback function and then turn it back on. Refer to P19
for how to turn on/off the Setback function.
Select All button
Selects all groups. B
A
CD
To select the groups on which to execute the Collective Operation
(Enable or disable Scheduled operation)
1. Touch the 3 Schedule button on the [Collective
Operation Setting] screen.
2. Read the pop-up message, and touch the OK button
to confirm.
3. Select the groups to include from the Group buttons
labeled A. By default, all groups are selected.
4. Touch the BSave button. A
B
Show Group Name List button
Shows a list of group names in a pop-up window.
Select All button
Selects all groups.
Operation Setting (cont'd)
・When appears on the “RC Prohibition” button, this function will not be available.