Mitsubishi Electronics TC-24A User Manual

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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.

Safety Precautions

●

Thoroughly read the following safety precautions prior to installation.

●

Observe the following precautions to ensure safety.

●

Nomenclature

●

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 future TC-24A users.

General precautions

WARNING

Indicates a risk of death or serious injury.

CAUTION

Indicates a risk of serious injury or structural damage.

All electric work must be performed by qualified personnel.

WARNING

(Prohibited actions) (Do not touch) (No water) (No wet hands) (Injury hazards) (Important actions)(Electric shock hazards)

CAUTION

WARNING

Do not install the controller where there is a risk of leaking flammable gas. If flammable gas accumulates around the controller, it may ignite and cause a fire or explosion.

Properly dispose of the packing materials. Plastic bags pose suffocation hazard to children.

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 fire.

Precautions during installation

To reduce the risk of shorting, current leakage, electric shock, malfunctions, smoke, or fire, do not wash the controller with water or any other liquid.

Properly install all required covers to keep moisture and dust out of the controller. Dust accumulation and water can cause electric shock, smoke, or fire.

To reduce the risk of electric shock, malfunctions, smoke or fire, do not operate the switches/buttons or touch other electrical parts with wet hands.

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.

To reduce the risk of fire or explosion, do not place flammable materials or use flammable sprays around the controller.

To reduce the risk of damage to the controller, do not directly spray insecticide or other flammable sprays on the controller.

To reduce the risk of injury, wear protective gear when

working 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.

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.

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

Function List

The table below summarizes the functions that are available on the TC-24A.

Refer to the pages listed for details.

Function Description

Page

Screen

Home

Main

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

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

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,

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

23 23

*1: Available functions vary depending on the unit type. Only the functions that are supported by the connected units

Page

Screen

Home

Main

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

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

23 23

Function List (cont'd)

Function Description

Page

Screen

Home

Main

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

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

Touch Panel Cleaning screen

Touch Panel Calibration screen

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.

Page

Screen

Home

Main

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

Touch Panel Cleaning screen

Touch Panel Calibration screen

Names and Functions of Controller Components

Product features

③

① ②

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 󰴥 , 󰴦 , and 󰴧 have LED on the top.

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.

󰴤 Display/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.

󰴥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

󰴦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

󰴧 SET 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

󰴨 Power 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 / ④ is pressed.

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 screen

To the GROUP screen

To the GRID screen

To the LIST screen

To the HOME screen

To the Main Menu screen

To the GRID (zoom-out) screen

To the GRID (zoom-in) screen

GRID screen

HOME screen

Screen Configuration [HOME screen]

GROUP screen

LIST screen

To the GRID screen

To the GROUP screen

To the GRID screen

To the LIST screen

To the HOME screen

To the Main Menu screen

[Main Menu screen]

To the GROUP screen

To the LIST screen

HOME screen

Buttons [HOME screen]

LOSSNAY

HOME screen

GRID (zoom-out) screen

Displays the operation status of all groups.

GRID (zoom-in) screen

Displays the deta iled operation status o f each group. (10 groups on 3 pages maximum)

LIST screen

Displays the deta iled operation status o f each group with group name. (5 grou ps on 5 p ages maximum)

Note:Display ⑦ and ⑧ vary depending o n t he ope rat ion

mode.Refer to P19 "Operation mode" for details. Sample displays above are for default setting: Operation mode 2.

GROUP screen

Displays the deta iled operation status o f each group. Sets group operations. (When the air conditioning units are controlled)

Operation mode 2

Operation mode 3

Operation mode 1

Air conditioning units SETBACK mode

① ② ③ 󱦯 ④

⑦ ⑧

⑭ ⑮ ⑯

⑬

󱦱

⑥

⑤

⑨

⑤

󱦱

⑨

⑩

⑤

⑫

⑪

⑰

⑱

Note : Depending on the units to be controlled and TC-24A settings, available button operations and displays vary. : While the icon is displayed on the button, the operation is locked.

Flips through pages.

󰴬Page button

Switches the group to be displayed.

󰴮Group button

Displays the GRID screen.

󰴤GRID screen button

Displays the LIST screen.

󰴥LIST screen button

Displays the GROUP screen.

󰴦GROUP screen button

Displays the MAIN MENU screen.

󰴧MAIN MENU screen button

: Displays the zoom-out screen. : Displays the zoom-in screen.

󰴩

GRID (zoom-out/zoom-in) screen button

Selects/Deselects groups collectively. Adds check marks to all selected icons.

󰴪Select 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 P25 "Multiple group selection screen" for details.

󰴫Move-to-the-selected-group button

Shows/Hides the display for the information below.

• Set temperature

• Scheduled operation is enabled.

• Hold function is enabled.

󰴭Display selection button

Switches the operation mode of the air conditioning units and LOSSNAY.

󰴯Mode button

Adjusts the set temperature by using the + and – buttons. Current room temperature appears above the button. Set temperature appears between the + and – buttons.

󰴰Set temperature button

Enables/Disables the hold function for the displayed groups. Icon appears while the hold function is enabled.

󰴱HOLD button

Displays the popup window of Interlocked ventilation (LOSSNAY)/Air direction/Fan speed/ Louver setting screen.

* Refer to P23 "Interlocked ventilation (LOSSNAY)/

Air direction/Fan speed/Louver setting" for the popup window.

󰴲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.

󰴨

Group icon (operation status display) button

Changes the operation to ON/OFF.

󰴳ON/OFF button

Displays the popup window to adjust the set temperature during the SETBACK mode. Current room temperature appears above the button. Set temperature appears on the button. Refer to P22 "Temperature setting" for details.

󰴴

Set temperature button (SETBACK mode)

Switches LOSSNAY fan speed between Lo and High.

󰴵Fan speed selection button

Displays the current time.

󱦯Current time

Displays the Current page/Total page number.

󱦱Current page/Total pages

Icon Displays [HOME screen]

•Check mark

•ON/OFF operation prohibition

[ON (BG Color: blue)]

[OFF (BG Color: black)] [Error (BG Color: yellow)]

(1) GRID (zoom-out) screen

(2) GRID (zoom-in) screen

(3) LIST screen

•Check mark

Room temperature

Interlocked ventilation (LOSSNAY) operation

[ON (BG Color: blue)]

Schedule/Hold

[OFF (BG Color: black)]

Group No.

[Air conditioning ]

[LOSSNAY group]

LOSSNAY icon

Filter sign:

[ON (BG Color: blue)] [OFF (BG Color: black)]

General equipment icon

[ON (BG Color: blue)] [OFF (BG Color: black)]

[General equipment group]

[Error (BG Color: yellow)] [Air conditioning unit/LOSSNAY/General equipment group]

Error display

Group No.

•Filter sign

•Check mark

Error display Communication error

at startup

Group No.

•Check mark

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 filter needs maintenance.

During scheduled operation:

Displays during scheduled operation.

While hold function is enabled:

Displays while hold function 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.

Group No. Room (Group) name

[LOSSNAY group]

Group No. Room (Group) name

[General equipment group]

•Check mark

•Mode

•Filter sign:

Schedule/Hold

(3) LIST screen

•Check mark

Display selection button

Group No.

•Check mark

Room (Group) name

[ON (BG Color: blue)]

Room temperature

Set temperature

Schedule/Hold

•Mode

•Filter sign

㧦

[OFF (BG Color: black)]

Room temperature

Interlocked ventilation ON: blue OFF: black

Schedule/Hold

* Interlocked LOSSNAY does not appear during operation.

Room temperature

Interlocked ventilation (LOSSNAY) operation

•Mode

•Filter sign:

[ON (BG Color: blue)] [OFF (BG Color: black)]

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.

[ON (BG Color: blue)] [OFF (BG Color: black)]

•LOSSNAY icon

•Filter sign㧦

Group No. Room (Group) name

[ON (BG Color: blue)]

Schedule/Hold

•LOSSNAY icon

•Filter sign

㧦

[OFF (BG Color: black)]

Schedule/Hold

•LOSSNAY icon

[LOSSNAY group]

Group No. Room (Group) name

[ON (BG Color: blue)]

Schedule/Hold

[General equipment group]

•General equipment icon

[OFF (BG Color: black)]

Schedule/Hold

•General equipment icon

•Check mark

[ON (BG Color: blue)] [OFF (BG Color: black)]

•General equipment icon

Maximum limit temperature Minimum limit temperature

㧔

SETBACK mode

㧕

Error display

ޣError (BG Color: yellow)ޤ ޣAir conditioning

unit/LOSSNAY/General equipment groupޤ

GROUP screen [Air conditioning unit group]

During operation

[LOSSNAY group]

During operation

[General equipment group]

During operation

SETBACK mode

While the unit is stopped

Group name

Group No.

Mode

Error

Room temperature

Set maximum/minimum

limit temperature

Interlocked ventilation

(LOSSNAY)

Remaining OVERRIDE time

Set temperature

Startup (communication)

error

Filter sign

Scheduled operation

/HOLD

HOLD-ON

HOLD-OFF

Interlocked ventilation (LOSSNAY)

Fan speed Louver

Air direction

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 filter needs maintenance.

During scheduled operation:

Displays during scheduled operation.

While hold function is enabled:

Displays while hold function 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.

Remaining OVERRIDE time

Displays the remaining time before the setback control resumes to the original set temperature when the maximum/minimum limit temperature is temporarily changed or when the set temperature is changed through the local remote controllers while setback control is executed.

Note : While the icon is displayed on the button, the operation is locked.

Icon Displays [HOME screen] (cont'd)

[LOSSNAY group]

During operation

[General equipment group]

During operation

While the unit is stopped

Fan speed display

General equipment icon

Remaining OVERRIDE time

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.

Basic Operations

Screen selection

GRID (zoom-out) screen appears at the initial startup.

Select the desired screen.

①

②

③

GRID (zoom-out) screen

GRID (zoom-in) screen LIST screen

②

①

③③

• 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 TC-24A 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 ① is 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 P

47 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 ① to select the group to be operated. Groups can be selected on the GRID (zoom-in) or the LIST screens. Touch the Group icon ① to switch between displaying check marks (selected) and hiding check marks (deselected). Touch ③ to select all groups. Touch the Group icons of the groups to be operated, and then touch ② to move to the Group screen.

The number of selected groups = 1 : The selected group appears on the Group screen. Refer to P20 "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 P25 "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.

Basic Operations (cont'd)

Operation Screen (Group screen)

Mode (useable only while the unit is in operation)

Touch ② to access the modes in order of "Cooling, Dry, Fan, Auto, Setback, and Heating." The selected mode will appear in the area labeled ①.

ON/OFF operation

Touching ③ allows 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 P43 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 ① will blink.

*Available mode varies depending on the model.

Modes that are unavailable do not appear.

Basic operations (GROUP screen)

①

②

⑤ ③

④

Auto heating display

Auto cooling display

Operating the Air conditioning unit group

[Green] [Black]

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.)

Setback mode

The setback function automatically switches the operation mode between cooling and heating to maintain the room temperature within the set temperature range.

The following figure shows the operation patterns of the unit that the setback operation is executed.

*The status of the air conditioning units do not reflect the mode.

HEAT FAN* FAN* FAN*COOL HEAT COOL

Minimum limit temperature

Maximum limit temperature

Night Daytime

During setback operation

Night Daytime

Room temperature

The room temperature changes corresponding to the change in the outside temperature.

Sample) When occupants are away from home

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

Setback : [Upper limit]19

°C - 30°C [21°C - 30°C] / 67°F - 87°F [69°F - 87°F]

[Lower limit]12

°C - 26°C [17°C - 26°C] / 53°F - 79°F [63°F - 79°F] * [ ] in case of using Mr.SLIM units. * Set temperature range varies depending on the model.

*Available set temperature range varies depending on the mode or model.

Notes on setback operation

• When the setback operation is performed on the air conditioning units that do not have Auto mode, use the system changeover function (*1) to prevent the coexistence of the air conditioning units in cooling and heating in a refrigerant system.

*1 Refer to P52 for System changeover.

• When the setback operation is performed on the cooling-only units, the maximum/minimum limit temperature can be set, but only maximum limit temperature is controlled in the operation.

• When the set temperature range is set through the local remote controllers and the setback operation is performed, the setback operation (override (*2) ) may be suspended.

*2 Refer to P22 for OVERRIDE.

• To change the setback maximum/minimum limit temperature

Touch the set temperature button to display the screen for setback maximum/minimum limit temperature.

Basic Operations (cont'd)

Timer does not appear on the screen.

Then, one of the screens on the right appear. Touch the OVERRIDE button (2) to switch between [TEMPORARY] and [PERMANENT] (shown above the OVERRIDE button).

Touch (3) to set the maximum/minimum limit. When [TEMPORARY] is selected, the timer will appear, and the original maximum/minimum limit temperature will appear above the timer. Touch (4) to set the timer. Then, touch the [OK] button (5).

When the scheduled setback operation is performed, [TEMPORARY] will appear on the screen.

When the setback operation is performed by selecting the setback mode or pressing the SET BACK button, [PERMANENT] will appear on the screen.

* After the set time has elapsed, the setback control resumes to

the original maximum/minimum limit temperature.

* When the set temperature is changed through other controllers

while setback operation (override) is executed, the temperature display is changed and setback operation (override) is suspended. After two hours have elapsed, the setback operation resumes to the original maximum/minimum limit temperature.

* The maximum/minimum limit temperature cannot be temporarily

changed on the multiple group selection screen. (Override cannot be used.)

* The override time can be set up to four hours in 10-minute

increments.



 



 





While the setback operation is performed



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

Stop Low High

Setting 1 Setting 2 Setting 3 Setting 4 Setting 5 Swing Auto

Quiet Low Medium High Auto

ON OFF

Touch ④ to show the Interlocked ventilation units (LOSSNAY)/Fan speed/Air direction/Louver settings screen.

Basic Operations (cont'd)

Operating the General equipment group

Displays the general equipment type.

*When changing icons, refer to Initial Setting Manual.

ON/OFF operation

• When the general equipment is turned on, the output contact of DIDO controller (PACYG66DCA) also turns on.

• When the general equipment is turned off, the output contact of DIDO controller (PACYG66DCA) 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.

Hold Function Setting

HOLD-ON HOLD-OFF

Touch ⑤ to enable/disable the hold function. * When the hold function is enabled, the current operation status is retained until the hold

function is disabled.

When this function is enabled, the scheduled operation will be prohibited as well as the following remote controller operations: Stop, operation mode change, preset temperature change.

is displayed while the hold function is enabled.

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.

Check the selected groups. Touch (1) to show the selected group confirmation screen.

(1)

■

Displays the emergency stop level signal input*

■Displays ON/OFF level signal input

The button cannot be operated.

Disabling functions

Lock Buttons

When TC-24A locks its own functions for ON/OFF, Mode, Temperature, Fan speed, Hold, 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 disabled. When the hold function is locked, the Hold button will be disabled. When the mode function is locked, the Set back button will be disabled.

Sample) ON/OFF operation lock

During receiving the external input signal

The ON/OFF function cannot operate when the following displays appear.

Menu Screen [Button Settings]

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.

󱫀

󱫂

󱫄

󱫆

󰴦 󰴧

Main Menu screen (Top screen)

󰴥

󰴤

󰴤 [HOME] button

Accesses the [HOME] screen

󰴧 Service Menu button

Accesses the maintenance menu for service personnel. Normally, general users do no need to change

any settings in the maintenance menu.

󰴦 Touch Panel Cleaning button P54

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.

󰴥 Back button

Returns the screen to the previous screen.

(When touched on the Main Menu screen, returns the screen to the HOME screen.)

󱫀 Time and Schedule

(1) Date and Time Sets the date, time, and display formats.

P28

(2) Set schedule

Sets the Weekly and 1-day operation schedules.

P29

(3) Check Current setting

Displays the operation schedule settings.

P35

󱫂 Restrictions Settings

(1) Lock Buttons Locks the buttons on the TC-24A.

P36

(2) Set Temperature Range Limit

Sets the temperature range for the local remote controllers.

P38

(3) Prohibit Remote Controller

Locks the buttons* on the local remote controllers.

* ON/OFF, Mode, Set Temperature, and Filter Reset buttons

P40

󱫄 Control 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.

P42

(2) Button Setting • Selects the groups that the operation applies to when the

Collective ON/OFF, HOLD, or SETBACK button is pressed.

•

Changes the behavior of the group icon on the HOME screen.

*Three setting options are available.

P46

(3) Volume Control

Sets the sound volume and screen brightness.

P48

(4) Touch Panel Calibration

Calibrates the touch panel.

P49

󱫆 System Management

(1) Status List Displays errors and filter signs.

P50

(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.

P52

Usage - Main Menu Settings

󱫀Time and Schedule screen

Main Menu > Time and Schedule

󱦯 󱦱 󱦳

󱦯Setting the date, time, and display format

Date tab Time tab

󰴧

󰴨

1. Touch the 󱦯 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.

Using the ③ buttons, set the following items: [Day/Month/Year] and [Hour/Minute/AM・PM].

On each tab, select one of the three display formats by checking the ④ checkbox next to the desired

format.

5. Touch the ⑤ Save button.

The initial date/time setting is 1/1/2010 12:00AM. If the clock is set forward, the operations that were scheduled to have taken place before the new

time will be cancelled.

Main Menu > Time and Schedule > Date and Time

󰴦

󰴥󰴤

󱦱Setting the operation schedule

Main Menu > 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 t o assi gn an oper atio n patt ern for each day of the week t o 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

Schedule setting flowchart

Step 1 Select the Weekly or One Day tab.

Step 2 Select a group.

Step 3 Select days or dates.

Step 4 Assign a pattern to the selected

days or dates.

Step 5 Configure the pattern.

Select Group and Days/Dates screen

Select Pattern screen

Edit Pattern screen

Set Schedule screens

1. Touch the [Set Schedules] button on the [Time and Schedule] screen to access the Select Group and

Days/Dates screen.

Usage - Main Menu Settings

󱫀Time and Schedule screen (cont'd)

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 Oneday 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.

2. Touch the Weekly or One Day tab.

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 page 32 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 ③ below 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 page 34 for icon definitions.

Operation pattern numbers

Schedules events for the selected pattern

[One Day] tab

Day (Date) grid

Current date

[Weekly] tab

On the 1-day tab, a 7-day schedule (Sunday through Saturday) including today will be displayed.

Scroll button

ON/OFF, Mode, Set Temperature, and Fan Speed

Air Flow Direction, Prohibit Remote Controller Operation

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.

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 11.

③ To 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.

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 page 32 for details

Event No. Scheduled actions Event No. Scheduled actions

Usage - Main Menu Settings

󱫀Time and Schedule screen (cont'd)

* 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 page 34 for icon definitions.

* The Set Temperature must be set to a temperature within the range that was specified in the Initial

Settings/Basic Settings under the Service Menu.

Refer to the Initial Setting manual to change the temperature setting range.

(The temperature range for the Setback mode depends on the connected indoor units.)

7. When finished making the settings, touch the OK button to return to the Select 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 [Save] button.

.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 11.

.When finished, touch the [Save] button.

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.

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.

1. Touch a row to insert an event above it.

* A red checkmark will appear on the selected row.

2. Touch the

Insert button. A blank 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

Functions Deselected

Setting 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)

*1 The icons corresponding to the functions that are not scheduled will not be displayed except in the Edit Pattern popup screen.

On [green]Off [black]

Setting 1 Setting 2 S

wing Auto

Permit Prohibit

Setting 3 Setting 4

Setting 5

Quiet Low Mid High Auto

Cooling Dry Fan Heating Auto

Setback Bypass Heat Recovery Auto Damper

Usage - Main Menu Settings

󱫀Time and Schedule screen (cont'd)

Change values with the

buttons.

Touch the icons repeatedly to select

the desired one.

󱦳Checking the Weekly/One Day Schedule Settings

Main Menu > Time and Schedule > Check Current 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.

• [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 Oneday 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.

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 Schedule screen.

• 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 page 34 for icon definitions.

Operation pattern numbers

Schedules events for the selected pattern

[One Day] tab Day (Date) grid Displays scheduled patterns

[Weekly] tab

Usage - Main Menu Settings

󱫂 Restrictions Settings

Main Menu > Restrictions Settings

󱦯Locking or unlocking access to the ON/OFF, Mode, Set Temperature,

Fan Speed, and HOLD settings from the HOME screen

Unlocked

Locked

Main Menu > Restrictions Settings > Lock Buttons

󱦯

󱦱 󱦳

Enable/Disable Lock

button

Enables or disables the Lock buttons.

󰴤

Lock buttons button

Locks or unlocks specific buttons.

󰴦

Save button

Saves the settings.

󰴥

1. Touch the 󱦯 Lock Buttons button on the [Restrictions Settings] screen.

2. Enter the Login password on the [Login] screen, and touch the Login button. Refer to below for the

details on log in. If the correct password is entered, the [Lock Buttons] screen will appear.

3. Touch the ① "Lock" button.

4. Touch the buttons labeled ② to "Lock" or "Unlock" specific items.

5. Touch the ③ Save button.

To lock or unlock buttons

Touch the button labeled ① and select "Unlock", then touch the ② Save button. To return to the original state, select "Lock", and then touch the ② Save button.

To temporarily unlock all items

• When access to specific settings are locked on the [Lock Buttons] screen, will appear over the corresponding icons on the HOME screen, and will not allow the user to change the settings.

Lockable functions and the corresponding buttons

Functions Buttons Functions Buttons

ON/OFF

ON/OFF button on the HOME screen Set temperature Set temperature button on the HOME screen

COLLECTIVE ON/OFF button *1

Fan speed Fan speed button on the HOME screen

MODE

Mode button on the HOME screen

HOLD

HOLD button on the HOME screen

SETBACK button *1 HOLD button *1

*1 If the function is locked, the LED on the button will blink twice when touched.

To log in

1. Enter the login password from the ① keyboard on the touch panel. Touch ② to delete a character.

2. Touch the

③ Login button.

If the password matches, the Lock Buttons screen will be

displayed.

To change the password

1. Enter the current password on the login screen, and then

touch ④ . The screen at left will appear.

Enter the new password in the ⑤ [New Password] field.

*Password should be between four and eight characters. Touch ② to delete a character.

Touch the ⑥ [Retype Password] field, and enter the new password

again.

4. Touch the ⑦ OK button to reflect the change and return to

the previous screen.

The initial login password is "0000". Change the password if

necessary.

If you forget the password, refer to the Initial Setting Manual.

󰴨

󰴩

󰴪

󰴦

󰴤

󰴧

󰴥

󱦱Setting the temperature ranges within which the

operating temperatures can be set from the local remote controllers

1. Touch the 󱦱 Set Temperature Range Limit button on the [Restrictions Settings] screen.

2. Read the pop-up message, and touch the OK button to confirm.

3. Click on the ② Group button on the [Set Temperature Range Limit] screen to select the groups to

change their settings.

4. Touch the ③ Edit button.

Show Group Name List

button

Displays a list of group names in a pop-up window.

▲▼ buttons

Use to flip through the pages. (Each page lists four groups.)

Group buttons

Displays group numbers. Touch the button for a specific group to edit the settings.

Edit button

Edits the temperature range for the selected group.

Select All

button

Selects all groups.

󰴤

󰴥

󰴦

Main Menu > Restrictions Settings > Set Temperature Range Limit

Usage - Main Menu Settings

󱫂 Restrictions Settings (cont'd)

Main Menu > Restrictions Settings

󱦯

󱦱

󱦳

5. Use the ④ buttons shown in the pop-up window at right

to set the range for each operation mode (Cooling, Heating, and

AUTO).

󰴧

󰴨

• The temperature setting range and the operation mode that can be set depend on the indoor unit and remote controller models.

• Operation from the local remote controllers that are connected to Mr. SLIM® cannot be prohibited from the TC-24A. Use the button lock function on the controllers instead.

• If the temperature limits are set too high or low, the system changeover function may not work properly and the units may not operate in the expected mode (Cooling or Heating).

When using the system changeover function, it is recommended not to use the temperature range

limit function.

To clear the lower limit, keep hitting the button until

appears. To clear the upper limit, keep hitting the button until

appears.

Not all functions are supported by all local remote controllers. The

buttons for the unsupported functions will be grayed out.

6. Touch the

⑤ OK button to save the settings.

Usage - Main Menu Settings

󱫂 Restrictions Settings (cont'd)

Main Menu > Restrictions Settings

󱦯 󱦱

󱦳

󱦳Locking or unlocking access to the ON/OFF, Mode,

Set Temperature, and Filter Sign Reset settings from the local and other system controllers.

1. Touch the 󱦳 Prohibit Remote Controller button on the [Restrictions Settings].

2. Read the pop-up message, and touch the OK button to confirm.

When access to specific settings are locked, will appear over the corresponding icons.



The settings that can be locked or unlocked depend on the type of group.

Indoor unit groups

LOSSNAY groups

① ON/OFF ○ ○ ② Mode ○ × ③ Set temperature ○ × ④ Filter Sign reset ○ ○

Main Menu > Restrictions Settings> Prohibit Remote Controller

Show Group Name List

button

Displays a list of group names in a pop-up window.

▲▼ buttons

Use to flip through the pages. (Each page lists four groups.)

Group buttons

Displays group numbers. Touch the button for a specific group to edit its settings.

Edit button

Edits the temperature range for the selected group.

Select All

button

Selects all groups.

󰴤

󰴥

󰴦

3. Click on the ② Group button on the [Prohibit Remote Controller] screen

to select the groups and change their settings.

4. Touch the ③ Edit button.

5. Use the buttons labeled ④ in the pop-up window at right to lock or

unlock access to each item.

6. Touch the ⑤ OK button to save the settings.

 The local remote controllers will be disabled in the groups whose

HOLD function is activated.

When the HOLD function is activated, the operation prohibit

settings cannot be changed from this screen.

 The screen shown left will always display the latest prohibit/permit

status. If an event takes place that changes the prohibit/permit status of a specific item, the screen display will be updated. (The mark will appear or disappear.)

The display will change as follows every time the button is touched.

󰴨

Locked → Unlocked

󰴧

Usage - Main Menu Settings

󱫄 Control Panel

Main Menu >Control Panel

󱦯

Setting the basic display settings on the HOME and MENU screens

 The [Display Format] screen consists of three pages (1/3 - 3/3). Use the 󰴧 buttons to flip

through the pages. After setting all the settings, touch the ⑤ Save button.

To select the display language

Touch the 󱦯 Display Format button on the [Control Panel] screen.

1. Touch the ① Language button on the [Display Format] screen (1/3).

2. Select a desired language from the language options (buttons

labeled ⑥ in the figure) on the pop-up screen.

3. Press the OK button to return to the previous screen.

󰴩

To select the temperature unit

Touch the ② Temperature unit button on the [Display Format] screen (1/3) to switch between ºC and ºF .

Main Menu > Control Panel > Display Format

Display Format screen：1/3

󰴤 󰴥 󰴦

󰴧

󰴨

󱦯

󱦱 󱦳 󱦵

To show or hide the room temperature

Touch the ③ Room Temperature button on the [Display Format] screen (1/3) to switch between

Show

and Hide .

To show or hide the Cooling/Heating mode icon (during Auto mode) when the operation mode is enabled

Touch the ⑦ Automatic Mode Display Setting button to switch between Show ( ) and Hide

( ). Sample [HOME] screen.

hideshow hideshow

Display Format screen：2/3

󰴪

󰴫

󰴨

To set the backlight timeout time

Touch the ⑧ Backlight timeout setting button to set the timeout time.

The back light will go off after a specified time of non-use.

* Touch the button repeatedly to select from the following settings. 　　 1 min. → 3 min. → 5 min. → 7 min. → 10 min.

The backlight will remain lit as long as an error exists.

Usage - Main Menu Settings

󱫄 Control Panel (cont'd)

Main Menu >Control Panel

Main Menu > Control Panel > Display Format

󱦯

󱦱 󱦳 󱦵

Display Format screen：3/3

󰴬

To change the group name

1. Touch the ⑨ Jump to the group name setting screen button on the [Display Format] screen (3/3).

2. Select a desired group grom the buttons labeled ⑩ on the [Group Name Setting] screen to change its

group name.

3. Enter the group name on the pop-up window. (Refer to the next page for details.) Group names can be

copied and pasted by using the ⑪ Copy and ⑫ Paste buttons.

4. Touch the ⑤ Save button.

Group Name Setting screen

󰴭

󰴮

󰴯

󰴨

Character input screen

To enter a character string

1. Touch ① [ABC], [abc], or [1( )] to select upper case alphabets, lower case alphabets, or numerical and

other symbols.

2. Enter characters from the ② keyboard. *Scroll the screen up and down with the ③ buttons to see all characters. *To correct a character, move the cursor over the character with the ④ button, and then either

delete it with the ⑤ DELETE button or overwrite it with a new character.

3. When complete, touch the ⑥ OK button to return to the previous screen.

To enter characte r stri ngs such as gr oup na mes (maximum 16 chara cters), perform the following

procedure.

󰴩

󰴥

󰴦

󰴤

󰴧 󰴨

Usage - Main Menu Settings

󱫄 Control Panel (cont'd)

Main Menu >Control Panel

To select the groups on which to execute the SET BACK function

Main Menu > Control Panel > Button Settings

󰴤 󰴥 󰴦 󰴧

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. If you change the settings while the SETBACK button is ON, turn off the SETBACK button, and

then turn it back on to reflect the changes.

󱦯

󱦱

󱦳 󱦵

󱦱Controller button settings

1. Touch the ① Setback Button Setting button on the [Button

Setting] screen.

2. Read the pop-up message, and touch the

OK button to confirm.

3. Touch the

⑤ buttons to set the upper and lower limits.

Press the button labeled ⑧ to 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

⑥ .

By default, all groups are selected.

5. Touch the ⑦ Save button.

󰴨

󰴪

󰴩

󰴫

Select All

button

Selects all groups.

To select the groups on which to execute the HOLD function

1. Touch the ② Hold Button Setting button on the [Button Setting]

screen.

2. Read the pop-up message, and touch the OK button to confirm.

Select the groups to include from the Group buttons labeled

⑨ .

By default, all groups are selected.

4. Touch the ⑩ Save button.

󰴭

󰴬

Show Group Name List button

Shows a list of group names in a pop-up window.

1. Touch the ④ Group Icon Setting button on the [Button Setting] screen.

Select among Operation mode 1, Operation mode 2, and Operation mode 3 by touching the corresponding

button labeled ⑬ .

3. Touch the ⑭ Save button.

󰴱

󰴰

Operation mode 1

Stops or starts the operation of the specific group of units when the Group icon is touched.

Operation mode 2 (default)

Allows the user to select multiple groups before jumping to the Group screen. Touch the operate button after selecting groups to jump to the Group screen.

Operation mode 3

Jumps to the Group screen when a Group icon is touched.

To select the groups on which to execute the Collective ON/OFF function

1. Touch the ③ Collective Operation Setting button on th e

[Button Setting] screen.

2. Read the pop-up message, and touch the OK button to confirm.

Select the groups to include from the Group buttons labeled

⑪ .

By default, all groups are selected.

4. Touch the ⑫ Save button.

The DIDO controller groups that do not support the Collective ON/OFF function cannot be selected.

󰴯

󰴮

Show Group Name List button

Shows a list of group names in a pop-up window.

Select All

button

Selects all groups.

Select All

button

Selects all groups.

To assign an operation mode to the Group icon on the [HOME] screen.

Usage - Main Menu Settings

󱫄 Control Panel (cont'd)

Main Menu >Control Panel

󱦳Adjusting the volume and brightness

Main Menu > Control Panel > Volume Control

To adjust the brightness

The volume and brightness settings will be changed immediately, but will not be saved until the

③ Save button is touched.

󱦯 󱦱

󱦳 󱦵

To adjust the volume

󰴤 󰴥

󰴦

Touch the 󱦳Volume Control button on the [Control Panel] screen.

1. Touch the ① Sound button on the [Volume Control] screen. Every time the 󰴤 Sound button is touched, the sound level changes as follows: [Level 0] → [Level 1] → [Level 2] → [Level 3].

2. Touch the ③ Save button.

1.Touch the ② Brightness button on the [Volume Control] screen. Every time the 󰴥 Brightness button is touched, the brightness level changes as follows: [70%] → [80%] → [90%] → [100%].

2. Touch the ③ Save button.

1. Touch the 󱦵 Touch Panel Calibration button on the [Control Panel] screen.

Touch the OK button on the confirmation screen.

2. Touch the white squares ( ④ ) in the order they appear, starting from the top left corner.

3. After all nine squares are touched, the screen will return to the [Control Panel] screen.

󱦵Calibrating the touch panel

Main Menu > Control Panel > Touch Panel Calibration

If each square is not touched within one minute after the last square is touched, calibration will be

cancelled and the screen will return to the [Control Panel] screen.

To calibrate the screen properly, use a pointy, but not sharp, object to touch the squares.

Sharp objects may scratch the touch panel.

󰴧

Number of errors

Displays the number of errors.

Usage - Main Menu Settings

󱫆 System Management

Main Menu > System Management

󱦯Checking or resetting the Error or Filter Sign

1. Touch the ① [Malfunction] tab to check the number of errors, the names of the group in which the

errors occurred, the addresses of the error-source units, and the error codes.

Main Menu > System Management > Status List

To check the error

󱦯

󱦱

Touch the 󱦯Status List button on the [System management] screen.

󰴤

󰴥

Error source address

Displays the M-NET address of the units whose Error/Filter Signs are turned on.

Error code

Displays the code for the error that were detected.

To reset the error

1. Touch the ① [Malfunction] tab.

2. Touch the ② All Reset button.

3. Touch the OK button on the pop-up window.



Those groups whose errors have been reset will have an icon indicating that they are stopped.

Group names

Displays the name of the group that includes the unit whose Error/Filter Signs are turned on. * The name of DIDO controller

groups will not be displayed.

If an error occurs, note the error code and consult your dealer or a maintenance provider.

To check the information about the units whose Filter Signs are turned on

1. Touch the ③ [Filter Sign] tab, and check the number of units whose Filter Signs are turned on, the 　names of the groups they belong to, and their addresses.

When a Filter Sign appears, clean, wash, or replace the filter as necessary.

Refer to air conditioner or LOSSNAY manual for details.

󰴦

󰴨

To reset the Filter Sign after cleaning the filter

④ Reset button

：Clears the specific Filter Sign.

⑤ All Reset button：Clears all Filter Signs.

Number of Filter Signs detected

Displays the number of Filter Signs that have been detected.

󰴧

Usage - Main Menu Settings

󱫆 System Management (cont'd)

Main Menu > System Management

󱦱Using the System-Changeover function

Main Menu > System Management > System-changeover

󱦯

󱦱

Use the System-Changeover mode to automatically change a group of indoor units that are connected to the same outdoor unit over between the Cooling and Heating modes according to temperature changes. Use this function to control the indoor units that do not have an automatic changeover mode. They can be operated in the Heating mode in the morning, and then automatically changed over to the Cooling or Heating mode all at once in the afternoon, for example, without the need to manually change the mode via each remote controller.

* This function should not be used in conjunction with the System-Changeover function on the outdoor unit or

other system controllers.

* When the System-Changeover mode is set to [Auto], the operation mode is selected based on the demands

of the majority of the group, taking into consideration the capacity of each indoor unit. When it is set to [Representative Group], the operation mode is selected based on the demand of the representative group through updating its status every 15 minutes and changing over to the cooling or heating mode as necessary.

Because the operation mode is selected based on the demands of the representative group or of the majority

of the groups, not all areas may be air conditioned to the optimum temperature.

If the temperature limits are set too high or low (see page 38), the system changeover function

may not work properly and the units may not operate in the expected mode (Cooling or Heating).



The system changeover function is not available for the following types of products:

Simultaneous Cooling/Heating units (with Auto mode), Mr. SLIM, LOSSNAY, and DIDO controller.

1. Touch the 󱦱System-Changeover button on the [System management] screen.

Touch the ① Change mode button to select between [None], [Auto], and [Representative Group].

3. Save the ③ Save button on the [System-Changeover] screen.

The initial setting for the Representative Group is the group in a specific block with the smallest group number.

System-changeover mode

Setting

None (default) Select this option so as not to use the System-Changeover function.

Auto

The operation modes (cooling/heating) will be changed-over based on the following: Temperature differences between the preset temperature and the room temperature of all indoor unit groups that are connected to a specific outdoor unit, AND the capacity of each indoor unit in each group.

* The operation mode of the groups of units that are not operating, or the ones that are operating in the Fan or Auto mode, will remain the same.

Representative Group

The operation modes (Cooling/Heating) will be changed-over based on the temperature difference between the preset temperature of the representative group and the room temperature.

* When the air conditioning units in the Representative Group are not operating, or they are operating in the Fan or Auto mode, the system-changeover function will work in the same way as when the system-changeover mode is set to Auto.

When [Representative Group] is selected, the group that is

currently designated as the Representative Group will be

displayed.

* To designate a different group as the Representative Group, select

a new group on the screen that appears (shown right) when the ② Representative Group button is pressed, and then touch the OK

button.

󰴦

Block No.

Displays the block number. All units in each group are operated in the same operation mode. The TC-24A automatically creates blocks based on the refrigerant pipe connection information and the group setting information on each unit.

Group list

Displays the number assigned to the indoor unit groups that are connected to the outdoor units in a specific block. Select a representative group from this list when the [Representative Group] is selected for the System-Changeover mode.

Operation mode

Displays the current operation mode Cooling: Heating:

󰴤 󰴥

Display Block Information button

Displays the addresses of the outdoor units and the names of the groups in a specific block.

Maintenance

Touch Panel Cleaning screen

This screen allows the user to wipe the touch screen without accidentally changing the settings.

1. Touch the icon on the [Main menu] screen to bring up the screen shown above.

2. When done cleaning the touch panel, touch the four numbers in the corners 1, 2, 3, and 4 in that order

to return to the [Main Menu] screen.

To clean the touch panel



The four numbers must be touched in the correct order. If you touch the numbers in the wrong order, start over from 1.

Wipe with a soft dry cloth, a cloth soaked in water with mild detergent, or a cloth dampened with ethanol. Do not

use acidic, alkaline, or organic solvents.

Troubleshooting

Problem

A Filter Sign is displayed on the screen.

Problem

is displayed on the screen.

Problem

The LED on the Collective ON/OFF button is blinking.

Problem

[Emergency Stop (Level signal)] is displayed on the screen, and the controller does not respond to the ON/OFF button.

Touch Main Menu > System Management > Status List. ON the Filter Sign tab, check the address on the screen. Clean the filter on the unit whose Filter Sign is on according to the instructions in the manual for the applicable unit. Refer to page 50.

Touch Main Menu > System Management > Status List. ON the Malfunction tab, check the error code and the error source address on the screen, and consult your dealer. Refer to page 50.

If the external input interface receives an emergency stop signal, all indoor units and the LOSSNAY that are controlled by the TC-24A will stop. The TC-24A controller, low-level sys tem cont rollers, o r loca l remo te con troller s will not respond until the emergency stop signal input is removed. When the emergency stop signal is removed, the operation status before the signal was received will be restored.

Solution

WT05827X01

HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN

*1 Not for use with a generic DC power supply device. Use the power supply unit for transmission line (PAC-SC51KUA etc.) by Mitsubishi. *2 "Power consumption Coefficient" is a coefficient to calculate the relative power consumption of the devices that receive power through

the M-NET transmission line.

Refer to the note at the end of Chapter 4 "System diagram" in the Installation Manual.

Power source

Operating conditions

Weight External dimensions (W x H x D)

Receives power from the power supply unit for transmission line or from outdoor units via the M-NET transmission cable. The power consumption coefficient

of Touch Controller is "4."

Specifications

30VDC *1 (for connection to M-NET only)

Operating temperature range 0~40˚C [32˚F~104˚F] Storage temperature range -20~+70˚C [-4˚F~+158˚F] 30%~90%RH (Non-condensing)

0.5kg [1-1/8 lbs] 180 x 120 x 30 mm 7-3/32 x 4-23/32 x 1-3/16 in

Temperature

Humidity

Mitsubishi Electronics TC-24A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual