Mitsubishi Electric TC-24A User manual

Air-conditioner Control System
TOUCH CONTROLLER
INSTRUCTION BOOK
MODEL
TC-24A
Safety Precautions ............................................................ 2
Function List ...................................................................... 4
Names and Functions of Controller Components ............. 8
Screen Configuration [HOME screen] ............................... 10
Buttons [HOME screen]..................................................... 12
Icon Displays [HOME screen] ........................................... 14
Basic Operations ............................................................... 18
Screen selection ........................................................................ 18
Group selection.......................................................................... 19
Operating the Air conditioning unit group .................................. 20
ON/OFF operation ........................................................................ 20
Mode............................................................................................. 20
Temperature setting ..................................................................... 21
Interlocked ventilation units(LOSSNAY)/Fan speed/Air direction/Louver settings ...... 23
Hold Function Setting ................................................................... 24
Operating the LOSSNAY group................................................. 24
Mode...................................................................................... 24
Fan speed setting.................................................................... 24
Operating the General equipment group ................................... 24
ON/OFF operation................................................................... 24
Multiple group selection screen ................................................. 25
Disabling functions..................................................................... 25
Menu Screen [Button Settings].......................................... 26
Usage - Main Menu Settings ............................................. 28
󱫀Time and Schedule screen ................................................... 28
󱫂Restrictions Settings ............................................................. 36
󱫄Control Panel ........................................................................ 42
󱫆System Management ............................................................ 50
Maintenance...................................................................... 54
Touch Panel Cleaning screen.................................................... 54
Troubleshooting................................................................. 55
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, Installation
Manual, and Initial Setting 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.

2
Safety Precautions
$'$*!.')$!!$,#().%'*)$#(%'$')$#()!!)$#
('+)$!!$,#%'*)$#()$#(*'().
$"#!)*'
)''#)("#*!%(()$#)$)#*(')$')#$'*)*'''#
%)("#*!$'*)*'''##'')$)(#(('.("#*!($*!"+!!)$)$(,$'%'$''!$)
)$#)'$!!' (*')))"#*!(%(($#)$#.*)*'*('(
General precautions
WARNING #)('( $)$'('$*(#*'.
CAUTION #)('( $('$*(#*'.$'()'*)*'!"
All electric work must be performed by qualified personnel.
WARNING
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CAUTION
WARNING
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! #!""!(
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'$%'!.(%$($)% #")'!(!()(
%$((*$)$#/')$!'#
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$ $! ()" $'# ($!+#)( $' $''$(+ ((
(* ( (*!*' ( ' %'(#) $' ,'
! !#($!*)$#($'(%'.('*('&*#)!.
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$)*#)$'*(')#$"%$##)($)*#))$
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)$#(("$ $''
Precautions during installation
$'*)'( $($')#*''#)! !)'
($ "!*#)$#(("$  $' ' $ #$) ,( )
$#)'$!!',),)'$'#.$)'!&*
'$%'!. #()!! !! '&*' $+'( )$ % "$()*'
#*()$*)$)$#)'$!!'*()*"*!)$##
,)'#*(!)'($ ("$ $''
$ '* ) '(  $ !)' ($  "!*#)$#(
("$ $''$#$)$%'))(,)(*))$#($'
)$*$)'!)'!%')(,),)#(
$ '* ) '(  $ #*'. $' !)' ($  $'
(%'.#  "! '$*# ) $#)'$!!' ()$% )
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$%')$# # (,) $ ) %$,' (*%%!. $'
!##"#)##$'#(%)#)$#)'$!!'
$ '* ) '(  $ ' $' -%!$($# $ #$) %!
!""!")'!($'*(!""!(%'.('$*#
)$#)'$!!'
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')!.(%'.#()$'$)'!""!(%'.($#
)$#)'$!!' $'*)'( $#*'.,'%'$))+',#
,$' #$#)$#)'$!!'
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#$))$*))$*%#!(,)($'*))$#(,)
%$#).$'('%$)
$'* ) '(  $#*'.#!)' ($  +$
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$ +$ #*'. '$" '$ # !(( $ #$) %%!.
-((+$'$#)!((%')(

33
The controller should be repaired or moved only by
qualified personnel. Do not disassemble or modify the
controller.
Improper installation or repair may cause injury,
electric shock, or fire.
Precautions for moving or repairing the controller
To avoid damage to the controller, use appropriate tools to
install, inspect, or repair the controller.
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.
TC-24A 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 damage to the controller, provide protection
against static electricity.
Additional precautions
To reduce the risk of shorting, electric shock, fire, 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.
WARNING CAUTION

4
Function List
The table below summarizes the functions that are available on the TC-24A.
Refer to the pages listed for details.
Function Description
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.
Switches the mode "Cooling/Dry/Fan/Auto/Setback/Heating" for
each group or all groups. (Switches the mode "Bypass/Heat
recovery/Auto" for LOSSNAY groups.)
Automatically switches the operation mode between cooling and
heating to maintain the room temperature within the set
temperature range. The maximum/minimum limit temperature
can be overridden.
Sets the set temperature for each group or all groups.
Adjusts the fan speed for each group or all groups.
Adjusts the air direction for each group or all groups.
Enables/disables the louver for each group or all groups.
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.)
Sets the date, time, and display formats. The current time will
appear at the top right corner of the HOME screen.
• 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 configured for the Weekly
schedule, and 5 for 1-day schedule.
• 1-day schedule overrides the Weekly schedule.
Enables/disables the hold function for each group or all groups.
* When the hold function is enabled, the current operation
status is retained until the hold function is disabled.
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.
ON/OFF Operation
Mode *1
Setback Mode *1
Set Temperature *1
Fan Speed *1
Air Direction *1
Louver *1
ON/OFF Operation for
Interlocked
Ventilation *1
Date and Time
Weekly/1-day schedule
HOLD
System Cangeover
Unit Operation
Time and Schedule
System Management
*1: Available functions vary depending on the unit type. Only the functions that are supported by the connected units
can be controlled from the TC
-
24A.

5
Page
Screen
Home
Main
Menu
Screen/Button name
HOME screen (GRID screen, LIST screen, GROUP screen,
Multiple group selection screen), Set Schedule screen, Collective ON/OFF button
GROUP screen, Multiple group selection screen, Set Schedule screen
SETBACK button (only when enabling/disabling the SETBACK mode)
GROUP screen, Multiple group selection screen, Set Schedule screen,SETBACK button
GROUP screen, Multiple group selection screen, Set Schedule screen
GROUP screen, Multiple group selection screen, Set Schedule screen
GROUP screen, Multiple group selection screen, Set Schedule screen
GROUP screen, Multiple group selection screen
GROUP screen, Multiple group selection screen
Date and Time screen
Set Schedule screen, Check Current Settings screen
GROUP screen, Multiple group selection screen, HOLD button
System Changeover screen
9
20
9
20
9
21
21
23
23
23
23
28
29
9
24
52

6
Function List (cont'd)
Function Description
Lock Buttons
Set Temperature Range
Limit
Prohibit Remote
Controller
Display Format
Button Setting
HOME screen
Operation Mode Setting
Volume Control
Error
Filter sign
Touch Panel Cleaning Mode
Touch Panel Calibration
Mode
External input
External output
Restrictions Settings
Basic Settings
Maintenance
Miscellaneous
Locks the following functions: ON/OFF, Mode (including
SETBACK), Set Temperature, Fan Speed, and HOLD.
Limits the available temperature range for the local remote
controllers (each group or all groups).
Locks the following buttons on the local remote controllers:
ON/OFF, Mode, Set Temperature, and Filter Reset buttons
(collectively or by group)
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),
and backlight timer, and group names.
• Selects the groups that the operation applies to when the
Collective ON/OFF, HOLD, or SETBACK button on the
controller is pressed. All groups are selected by default. The
maximum and minimum temperatures can be set for the
SETBACK operation.
When the Group icon is touched, the action differs depending
on the operation mode. Default is set to the operation mode 2.
Operation mode1: Turns ON/OFF the units in the group
whose Group icon is touched.
Operation mode2: 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 mode3: Directly moves to the Group screen of the
group whose Group icon is touched.
Sets the sound volume and screen brightness.
If an error occurs on the TC-24A controller 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 verified and reset on the Status
List screen.
Filter Icon will appear on the HOME screen when the filter is
due for cleaning. The icon can be removed from the Status List
screen.
Disables the touch panel to allow the user to clean the panel.
Calibrates the touch panel if the touch panel does not respond
correctly when touched.
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.
Outputs the operation status of the units (ON/OFF) or error
signals to external devices collectively, using contact signals.
Requires cable connections.

7
Page
Screen
Home
Main
Menu
Screen/Button name
Lock Buttons screen
Set Temperature Range Limit screen
Set Schedule screen, Prohibit Remote Controller screen
Display Format screen
Setback Button Setting screen, Hold Button Setting screen, Collective Operation Button setting
screen
Group Icon Setting screen
Volume control screen
HOME screen (GRID screen, LIST screen, GROUP screen), Status List screen
HOME screen (GRID screen, LIST screen, GROUP screen), Status List screen
Touch Panel Cleaning screen
Touch Panel Calibration screen
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38
40
42
46
47
48
50
50
54
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8
Names and Functions of Controller Components
Product features
③
①②
④
⑤
The TC-24A 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).
TC-24A can control up to 24 units/24 groups. (*1)
TC-24A controls and monitors the air conditioning units of each group. TC-24A 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 TC-24A touch panel. ON/OFF, Hold, and Set back operations
that control air conditioning units collectively are accessed by using buttons next to the touch panel.
TC-24A display 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 Initial Setting Manual)
* 1 Group: minimum unit to be controlled by TC-24A
A group consists of units (16 units maximum).
Buttons ②,③, and ④have LED on the top.

9
TC-24A features a 5"-wide 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
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 LED 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.
②Collective ON/OFF Button *1
The Hold button enables the hold function that allows the user to retain the current operation
status for all selected groups collectively.
While the hold function is enabled, the scheduled operation is suspended, and the local remote
controller operation is also prohibited.
Unlit : Normal operation
Lit : HOLD-on
③HOLD Button *1, *2, *3
The Setback button enables the setback mode for all selected groups collectively. The setback
function automatically switches the system between cooling and heating to maintain the room
temperature within the set temperature range. The wider the set temperature range, the greater
the energy saving.
To keep the setback mode, enable the hold function.
Unlit : Normal operation mode
Lit : Setback mode
④SET BACK Button *1, *2, *3
The power indicator lights up when the power to TC-24A is turned on.
Unlit : Power OFF
Lit : Power ON
⑤Power indicator
Touch panel / Buttons
*1 When the button is pressed while the operation is prohibited, the LED will blink twice.
*2 The hold and setback functions can be enabled only through the HOME screen.
*3 The LED lights on and off only when the button ③/④is pressed.

10
Zoom-out screen
1. How to switch the HOME screen
Touch tubs to change the display format.
2. How to move to the Main Menu screen
Zoom-in screen
: 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.
3. How to move to the Maintenance screen
Refer to Initial Setting Manual.
To the GRID
(zoom-out) screen
To the GRID
(zoom-in) screen
GRID screen
Screen Configuration [HOME screen]
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