Mitsubishi AT-50A User Manual

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Page 1

Air-conditioner Control System ADVANCED TOUCH CONTROLLER

MODEL

AT-50A

INSTRUCTION BOOK

Safety Precautions ..............................................................2

Function List ........................................................................ 4

Names and Functions of Controller Components................ 6

Screen Conguration [HOME screen] ................................. 8

Buttons [HOME screen] ..................................................... 10

Icon Displays [HOME screen]............................................ 12

Basic Operations ............................................................... 16

Screen selection .........................................................................16

Group selection ..........................................................................17

Operating the Air conditioning unit group ...................................18

ON/OFF operation ........................................................................ 18

Mode ............................................................................................. 18

Temperature setting ...................................................................... 20

Interlocked ventilation units(LOSSNAY)/Fan speed/Air direction/Louver settings

"Disable scheduled operation" button ........................................... 22

Operating the LOSSNAY group ..................................................22

Mode ............................................................................................. 22

Fan speed setting ......................................................................... 22

Operating the General equipment group ....................................22

Before using the controller, read this Instruction Book carefully to ensure proper operation. Retain this Instruction Book for future reference. Make sure that this manual as well as the Installation Manual are passed on to any future air condition system users. To ensure safety and proper operation of the unit, the unit should only be installed by qualified personnel.

ON/OFF operation ........................................................................ 22

Multiple group selection screen ..................................................23

Disabling functions .....................................................................23

Menu Screen ..................................................................... 24

Usage - Main Menu Settings ............................................. 26

Operation Setting .......................................................................26

Restriction Settings ....................................................................42

Control Panel ..............................................................................50

System Management .................................................................57

Maintenance ...................................................................... 61

Touch Panel Cleaning screen .....................................................61

Troubleshooting ................................................................. 62

....... 21

Page 2

Safety Precautions

Thoroughly read the following safety precautions prior to installation.

●

Observe the following precautions to ensure safety.

●

WARNING CAUTION

Nomenclature

●

(Prohibited actions)

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 AT-50A users.

Indicates a risk of death or serious injury. Indicates a risk of serious injury or structural damage.

(Do not touch) (No water)

All electric work must be performed by qualied personnel.

(No wet hands) (Electric shock hazards)

(Injury hazards) (Important actions)

General precautions

WARNING

Do not install the unit in a place where large amounts of oil, steam, organic solvents, or corrosive gases, such as sulfuric gas, are present or where acidic/ alkaline solutions or sprays are used frequently. These substances can compromise the performance of the unit or cause certain components of the unit to corrode, which can result in electric shock,

malfunctions, smoke, or re.

To reduce the risk of shorting, current leakage,

electric shock, malfunctions, smoke, or re, do not

wash the controller with water or any other liquid. To reduce the risk of electric shock, malfunctions,

smoke or re, do not operate the switches/buttons or

touch other electrical parts with wet hands.

CAUTION

To reduce the risk of re or explosion, do not place ammable materials or use ammable sprays around

the controller.

To reduce the risk of damage to the controller, do not

directly spray insecticide or other ammable sprays

on the controller. To reduce the risk of electric shock or malfunctions,

do not touch the touch panel, switches, or buttons with a pointy or sharp object.

To reduce the risk of injury or electric shock, before spraying a chemical around the controller, stop the operation and cover the controller.

To reduce the risk of injury or electric shock, stop the operation and switch off the power supply before cleaning, maintaining, or inspecting the controller.

Properly install all required covers to keep moisture and dust out of the controller. Dust accumulation and

water can cause electric shock, smoke, or re.

To reduce the risk of injury and electric shock, avoid contact with sharp edges of certain parts.

To avoid injury from broken glass, do not apply

excessive force on the glass parts.

To reduce the risk of injury, wear protective gear when working on the controller.

Precautions for moving or repairing the controller

WARNING

The controller should be repaired or moved only by

qualied personnel. Do not disassemble or modify the

controller. Improper installation or repair may cause injury,

electric shock, or re.

Additional precautions

To avoid damage to the controller, use appropriate tools to install, inspect, or repair the controller.

AT-50A is designed for exclusive use with the Building

Management System by Mitsubishi Electric. The use of this controller for with other systems or for other purposes may cause malfunctions.

CAUTION

To reduce the risk of shorting, electric shock, re,

or malfunction, do not touch the circuit board with tools or with your hands, and do not allow dust to accumulate on the circuit board.

To avoid damage to the controller, do not overtighten the screws.

To avoid discoloration, do not use benzene, thinner, or chemical rag to clean the controller. To clean the controller, wipe with a soft cloth soaked in water with mild detergent, wipe off the detergent with a wet cloth, and wipe off water with a dry cloth.

To avoid damage to the controller, provide protection against static electricity.

Precautions during installation

WARNING

Do not install the controller where there is a risk of

leaking ammable gas. If ammable gas accumulates around the controller, it may ignite and cause a re or explosion.

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

Page 3

Function List

The table below summarizes the functions that are available on the AT-50A. Refer to the pages listed for details.

Function Description Page

Switches the ON/OFF operation of the units such as air conditioning

ON/OFF Operation

Mode

Set Temperature Fan Speed Air Direction

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 AT-50A.

Louver

ON/OFF Operation for Interlocked Ventilation

Collective Operation

Date and Time

Weekly/1-day schedule

Setback Control

Disabling scheduled operation

System-Changeover

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/Heating” for each group or all groups. (Switches the mode “Bypass/Heat recovery/ Auto” for LOSSNAY

groups.) 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.

*1 *1

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.)

The following functions can be collectively executed on multiple groups:

Setback, Schedule, Mode, Temperature Correction, RC Prohibition. 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 congured for the Weekly schedule,

and 5 for 1-day schedule.

• Two types of weekly schedule (Summer/Winter) can be set.

• 1-day schedule overrides the Weekly schedule. This function helps keep the indoor temperature in the temperature range while the units are stopped and during the time this function is effective.

Scheduled operation can be temporarily disabled. This setting must be set to OFF to run scheduled operation.

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.

20 21 21 21

19 38

Restriction Settings

Basic Settings

Maintenance

Miscellaneous

Function Description Page

Lock Buttons

Set Temperature Range Limit

Prohibit Remote Controller

Operation Mode Selection Limit

Display Format

Function Key Setting

HOME screen Operation Mode Setting

Volume Control

Error

Filter sign Touch Panel

Cleaning Mode Touch Panel

Calibration Mode

External input

External output

Locks the following buttons: Collective ON/OFF, F1, F2, and Main

Menu.

Locks the following functions: ON/OFF, Mode, Set Temp, Fan

Speed, and Schedule ON/OFF. 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)

When set as the main controller, operation of the following modes with the local remote controllers can be prohibited.

When cooling is prohibited: Cooling, dry, automatic cannot be

chosen.

When heating is prohibited: Heating, automatic cannot be chosen. When cooling/heating is prohibited: Cooling, dry, heating, automatic

cannot be chosen.

Selects the display formats for the following items: Display

language, temperature unit, room temperature, display or nondisplay of Cooling/Heating mode icons (during Auto mode), backlight timer, and group names.

The F1 button and the F2 button can be set as a run button of the

following collective operation: Setback, Schedule, Operation Mode,

Temperature Correction, Remote Controller Prohibition. When the Group icon is touched, the action differs depending on

the operation mode. Default is set to the operation mode 2.

Operation mode 1:

Operation mode 2:

Operation mode 3: Directly moves to the Group screen of the

Sets the sound volume and screen brightness. If an error occurs on the AT-50A 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, appear on the corresponding group icon on the HOME screen. The

error code can be veried and reset on the Status List screen.

Filter Icon will appear on the HOME screen when the lter is due

for cleaning. The icon can be removed from the Status List screen. 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.

Turns ON/OFF the units in the group whose Group icon is touched.

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.

group whose Group icon is touched.

will

11 23 42

Page 4

Names and Functions of Controller Components

Product features

The AT-50A described in this manual is a centralized controller with color LCD touch panel for air conditioning units, LOSSNAY, and General equipment using the Mitsubishi Electric DIDO controller (PACYG66DCA). AT-50A can control up to 50 units/50 groups. (*1) AT-50A controls and monitors the air conditioning units of each group. AT-50A also can control detailed scheduling and prohibits the local remote controller operation in each room (group), which may lead to energy savings. Basic operations are accessed through the AT-50A touch panel. ON/OFF, F1, and F2 operations that

control air conditioning units collectively are accessed by using buttons next to the touch panel.

AT-50A 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

Maintenance screen : Initial setting screen to set the basic systems such as group settings

* 1 Group: minimum unit to be controlled by AT-50A

A group consists of units (16 units maximum).

(described in this Instruction Book)

(described in the Installation Manual)

Touch panel / Buttons

1 Display/Touch panel

AT-50A features a 5" color LCD touch panel. Touch panel displays the operation status of the units. Function settings such as week schedule settings are accessed through the touch panel. The backlight lights up when the panel is touched, and lights off after certain period of time. The

backlight will remain lit as long as an error exists.

2 Collective ON/OFF Button *1

The Collective ON/OFF button enables the collective ON/OFF function that allows the user to turn on/off the air conditioning units, LOSSNAY, and DIDO controllers in all groups collectively. The indicator corresponds to the operation status of controlled units.

Unlit : Indicates that all units are stopped.

Lit : Indicates that one or more units are in operation.

Blink : Indicates that an error is occurring.

3 Function 1 Button (F1), 4 Function 2 Button (F2) *1 *2

Desired functions from the following list can be assigned to the F1 and F2 buttons. (Setback/Schedule/Operation Mode/Temperture Correction/Remote Controller Prohibition) The functions to assign to these buttons can be selected from the Function Key Setting on the Control Panel. The indicator on the buttons indicates the enabled/disabled status of the function.

Unlit : The assigned function is disabled. Lit : The assigned function is enabled.

The indicators on the F1 and F2 buttons will be lit or unlit when the functions that are assigned to the F1 and F2 buttons are enabled or disabled from the Collective Operation panel.

5 Power indicator

The power indicator lights up when the power to AT-50A is turned on.

Unlit : Power OFF

Lit : Power ON

*1 When the button is pressed while the operation is prohibited, the LED will blink twice. *2 Buttons 2, 3, and 4 are available only on the HOME screen.

Buttons 2, 3, and 4 have indicators on the top.

Page 5

Screen Configuration [HOME screen]

HOME screen

1. How to switch the HOME screen

Touch tubs to change the display format.

: Displays the GRID screen.

: Displays the GRID (zoom-out) screen.

: Displays the GRID (zoom-in) screen.

: Displays the LIST screen.

: Displays the GROUP screen.

2. How to move to the Main Menu screen

: Displays the Main Menu screen.

3. How to move to the Maintenance screen

Refer to the Installation Manual.

GRID screen

Zoom-out screen

To the GRID (zoom-in) screen

Zoom-in screen

To the GRID (zoom-out) screen

To the GROUP screen

To the GRID screen

To the LIST screen

To the GRID screen

GROUP screen

To the LIST screen

LIST screen

To the GROUP screen

[Main Menu screen]

To the Main Menu screen

To the HOME screen

Page 6

Buttons [HOME screen]

① ② ③ 󱦯④ ⑤

⑨ ⑩⑦⑧

⑧ ⑪

⑯ ⑰ ⑱

⑮

󱦱

⑥

󱦱

⑪

⑫

⑥

⑭

⑬

⑲

HOME screen

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

Displays the operation status of all groups. The button layout 6 varies with the number of the registered groups.

LIST screen

Displays the detailed operation status of each group with group name. (5 groups on 10 pages

maximum)

Note: Display

⑨

mode. Refer to P17 "Operation mode" for details.

Sample displays above are for default setting: Operation

mode 2.

Operation mode 1

Operation mode 2

and ⑩ vary depending on the operation

Displays the detailed operation status of each

group. (10 groups on 5 pages maximum)

GROUP screen

Displays the detailed operation status of each group. Sets group operations. (When the air conditioning units are controlled)

LOSSNAY

1GRID screen button

Displays the GRID screen.

2LIST screen button

Displays the LIST screen.

3GROUP screen button

Displays the GROUP screen.

4MAIN MENU screen button

Displays the MAIN MENU screen.

5Operation lock button

Locks or unlocks the buttons on the AT-50A. Press and hold the button for two seconds to lock or unlock the buttons. The locked/unlocked status icon will appear on the buttons.

A password may be required to unlock certain buttons. Select the buttons to be locked from the Lock Buttons (Refer to P42.) on the Main menu. If no items have been selected, the operation lock button will not appear on the screen.

Group icon (operation status display) 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.

Locked

Unlocked

7 “Access the Collective Operation

panel” button

Press this button to bring up the collective operation panel. (Refer to P19 for information about the collective operation panel.)

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

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

9Select All button

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

0Move-to-the-selected-group button

Moves to the GROUP screen of the selected group. Moves to the Multiple group selection screen when multiple groups are selected. Refer to P23 "Multiple group selection screen" for details.

aPage button

Flips through pages.

bDisplay selection button

Shows/Hides the display for the information below.

• Set temperature

• Scheduled operation is enabled.

cGroup button

Switches the group to be displayed.

dMode button

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

eSet temperature button

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

“Disable scheduled operation” button

Use this button to temporarily disable the scheduled operation on the display. The indicator on the button will remain lit when the function is enabled. The scheduled operation will not be run when the icon

is displayed.

Interlocked ventilation (LOSSNAY)/ Air direction/Fan speed/Louver setting button

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

* Refer to P21 "Interlocked ventilation units

(LOSSNAY)/Fan speed/Air direction/Louver settings" for the popup window.

⑱ON/OFF button

Changes the operation to ON/OFF.

⑲Fan speed selection button

Switches LOSSNAY fan speed between Lo and High.

1Current time

Displays the current time.

2Current page/Total pages

Displays the Current page/Total page number.

Operation mode 3

Note: Depending on the units to be controlled and AT-50A settings, available button operations and displays vary. : While the icon is displayed on the button, the operation is locked.

10 11

Page 7

Icon Displays [HOME screen]

(1) GRID (zoom-out) screen

(2) GRID (zoom-in) screen

[ON (BG Color: blue)]

Group No.

•Filter sign

•Check mark

[OFF (BG Color: black)]

[Error (BG Color: yellow)]

Error display Communication error

at startup

[Air conditioning ]

[ON (BG Color: blue)]

•Check mark

•ON/OFF operation prohibition

Group No.

•Mode

•Filter sign:

Schedule (enable/disable)

Room temperature Interlocked ventilation

(LOSSNAY) operation

[OFF (BG Color: black)]

[LOSSNAY group]

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

Filter sign:

LOSSNAY icon

Schedule (enable/disable)

[General equipment group]

[ON (BG Color: blue)]

Schedule (enable/disable)

General equipment icon

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

Error display

[OFF (BG Color: black)]

(3) LIST screen

Display selection button

Set temperature*

[OFF (BG Color: black)]

Schedule (enable/disable)

Room temperature

** Interlocked LOSSNAY does not appear during operation.

[OFF (BG Color: black)]

•LOSSNAY icon

•General equipment icon

Group No. Room (Group) name

•Check mark

[LOSSNAY group]

Group No. Room (Group) name

•Check mark

[ON (BG Color: blue)]

Schedule (enable/disable)

Room

•Mode

•Filter sign:

* When the temperature offset function is

enabled, the temperature will appear in the green outline font.

[ON (BG Color: blue)]

•LOSSNAY icon

•Filter sign:

temperature

Schedule (enable/disable) Schedule (enable/disable)

[General equipment group]

Group No. Room (Group) name Schedule (enable/disable) Schedule (enable/disable)

•Check mark

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

•General equipment icon •General equipment icon

Interlocked ventilation**

ON: blue

OFF: black

Display selection button

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

Interlocked ventilation (LOSSNAY) operation**

•Mode

•Filter sign:

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

•LOSSNAY icon

•Filter sign:

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

Room temperature

Error:

Displays

when an error occurs.

Startup (communication) error:

Displays

as well as the error display when a

startup (communication) error occurs.

Filter sign:

Displays

when lter needs maintenance.

During scheduled operation:

Displays

during scheduled operation.

When the "Disable scheduled operation" button is enabled:

Displays

when the "Disable scheduled

operation" button is enabled.

Room temperature:

Display ranges 8-39ºC (46-102ºF). When the temperature is beyond the range, 8ºC (46ºF) or 39ºC (102ºF) will blink on the display. When multiple air conditioning units (indoor units) are registered to a group, current indoor temperature on the main indoor unit is displayed.

Interlocked ventilation (LOSSNAY):

Displays when there are ventilation units interlocked with the air conditioning (indoor) units in the group.

Icon color indicates the operation status (Blue: ON, Black: OFF).

General equipment icon:

Displays the General equipment type.

Error (BG Color: yellow)

【

Air conditioning

【

unit/LOSSNAY/General equipment group

】

Error display

】

Page 8

Icon Displays [HOME screen]

GROUP screen

[Air conditioning unit group]

During operation

Group No.

Mode

Error

Startup (communication)

error

Filter sign

Scheduled operation

/Disabled

Disable scheduled

operation function: ON

Disable scheduled

operation function: OFF

Temperature Correction

While the unit is stopped

Group name

Fan speed Louver

Air direction

Interlocked ventilation (LOSSNAY)

Room temperature Set temperature

When the Temperature Correction function is enabled

[LOSSNAY group]

During operation

While the unit is stopped

Fan speed display

[General equipment group]

During operation

While the unit is stopped

General equipment icon

Interlocked ventilation

(LOSSNAY)

Error:

Displays

Startup (communication) error:

Displays startup (communication) error occurs.

Filter sign:

Displays

During scheduled operation:

Displays

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

when an error occurs.

as well as the error display when a

when lter needs maintenance.

during scheduled operation.

When the "Disable scheduled operation" button is enabled:

Displays operation" button is enabled.

Room temperature:

Display ranges 8-39ºC (46-102ºF). When the room temperature is beyond the range, 8ºC (46ºF) or 39ºC (102ºF) will blink on the display. When multiple air conditioning units (indoor units) are registered to a group, current indoor temperature on the main indoor unit is displayed.

when the "Disable scheduled

When the Temperature Correction function is enabled:

When the Temperature Correction function is enabled, the corrected temperature will appear in the green outline font.

Interlocked ventilation (LOSSNAY):

Displays the operation status of the ventilation that is interlocked with the air conditioning (indoor) units.

General equipment icon:

Displays the General equipment type.

Page 9

Basic Operations

Screen selection

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

GRID (zoom-out) screen

GRID (zoom-in) screen

LIST screen

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 P41 for changing the mode.

• Operation mode 2: appears in the area marked 2.

Allows the user to select groups to be operated. Moves to the Group screen.

Touch the Group icon 1 to select the group to be operated. Groups can be selected on the GRID 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 the Group screen.

The number of selected groups = 1 : The selected group appears on the Group screen.

Refer to P18 "Group screen" for details.

The number of selected groups > 1 : The Multiple group selection screen appears.

(The selected groups can be operated collectively.) Refer to P23 "Multiple group selection screen" for details.

• Operation mode 1: appears in the area marked 2. Stops or starts the operation of the air conditioning units through Group icon 1.

2 to move to

* ON/OFF operation lock

When AT-50A restricts its own ON/OFF operation, the icon above will appear. The ON/OFF operation will be disabled.

* During receiving the external input signal

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

■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

• Operation mode 3: Nothing appears in the area marked 2. Moves to the Group screen by touching the Group icon 1.

The button cannot be operated.

Page 10

Basic Operations

Operation Screen (Group screen)

Operating the Air conditioning unit group

Basic operations (GROUP screen)

5 3

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:

[Green] [Black]

Collective Operation Panel

This panel has the functions that can be

executed collectively. (Setback, Schedule, Mode,

Temperature Correction, RC Prohibition) Touching the

icon on the GRID or the LIST screen will bring up the Collective Operation panel. Each button has an indicator and the function name.

The indicators on the buttons show which functions are assigned to which buttons.

▪ Before using the Collective Operation buttons, the groups to execute collective settings on must be selected,

and the parameters must be set from Main Menu>Operation Setting>Collective Operation Setting.

appears on an icon of a given function, the function is not available.

▪ If

icon at the left bottom of the

Indicator Function

Collective Operation button

Performing Collective Operation

On the GRID or the LIST screen, touch the button that brings up the Collective Operation Panel.

Select the Collective Operation button on the Collective Operation panel.

Press OK on the Collective Operation panel.

(Go to 4 if Setback or Mode was selected. Otherwise, the setting is complete.)

If Setback or Mode was selected, take the following steps.

When Setback is selected When Mode is selected

Mode (useable only while the unit is in operation)

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

*Refer to P51 for Auto mode cooling/heating settings. *To operate an indoor unit in the heating (cooling) mode

while the indoor unit is already operating in the opposite mode, the operation mode cannot be changed until all of the indoor units operate in the same mode or stop. In this case, the mode 1 will blink.

*Available mode varies depending on the model.

Modes that are unavailable do not appear.

*The operation mode which is restricted by this controller or

other controllers cannot be selected.

Auto heating display

Auto cooling display

ouch OK on the popup window.

Select the desired item, and touch OK.

▪ Scheduled: Scheduled operation is enabled. The units will

▪

Unscheduled

▪ OFF

* Regardless of how the above settings are made, the Setback

function will not be executed if the operation switch is on.

* A blinking indicator on a button indicates that the function that corresponds to the button cannot be

operate according to the Setback Control settings. (P35)

: Scheduled operation is disabled. The units will

operate according to the Collective Operation settings (Setback). (P39)

: The Setback function will not be executed.

collectively executed. Check the settings for the “Collective Operation Setting.”

▪ T

▪ Select a mode on the window that will appear

▪ Press OK.

Page 11

Basic Operations

Checking the status of the collective operation functions

On the GRID or the LIST screen, touch the button that brings up the Collective Operation panel.

Check the color of the indicator on the collective operation button.

: The function is enabled.

(Yellow) (Gray) : The function is disabled.

Checking the Function button settings

On the GRID or the LIST screen, touch the button that brings up the Collective Operation Panel.

Check what it says on the indicator on the collective operation buttons.

: The function is assigned to the F1 button.

The function is assigned to the F2 button.

: : The function is not assigned to the F1 or F2 button.

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.)

*Available set temperature range varies depending on the mode or model. The temperature can be set within the following range.

Cool/Dry : 19°C - 30°C / 67°F - 87°F Heat : Auto :

17°C - 28°C / 63°F - 83°F 19°C - 28°C / 67°F - 83°F

Interlocked ventilation units (LOSSNAY)/ Fan speed/Air direction/Louver settings

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

A C

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

* [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.

(useable only while the unit is in operation)

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

After setting A through D , touch the OK button.

Stop Low High

Quiet Low Medium High Auto

ON OFF

Page 12

Basic Operations

“Disable scheduled operation” button

The “Disable scheduled operation” function is ON. The “Disable scheduled operation” function is

Use button 5 (P18) to temporarily disable the scheduled operation. When the function is enabled, the indicator on button 5 will light up in yellow. When this function is enabled, the icon operation will not be run.

Operating the LOSSNAY group

Displays that are not marked by numbers on the screen are the same as those on the Air conditioning unit group screen.

will appear on the screen, and the scheduled

OFF.

Mode

Touch (1) to access the modes in the order "Bypass, Heat recovery, Auto." The selected mode will appear in the area marked (2).

* Available mode varies depending on the model.

Modes that are unavailable do not appear.

Fan speed setting

(2) (1) (3) (4)

Operating the General equipment group

Displays that are not marked by numbers on the screen are the same as those on the Air conditioning unit group screen.

Touch (3) to access the fan speeds in the order "Low, High." The selected fan speed will appear in the area marked (4).

Displays the General equipment type.

*When changing icons, refer to the Installation Manual.

ON/OFF operation

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

• When the General equipment is turned of the output contact of DIDO controller (PACYG66DCA) also turns off.

Multiple group selection screen

Allows the user to collectively operate all groups that are selected on the GRID or LIST screen. When selected groups include two or more unit types, select the unit type to be operated. Then, the target group will be the selected unit group.

* To operate the Air conditioning unit group

(1)

Check the selected groups. Touch (1) to show the

selected group conrmation

screen.

Disabling functions

Lock Buttons

When AT-50A locks its own functions for ON/OFF, Mode, Temperature, Fan speed, “Disable scheduled operation” button, the icon above will appear on the corresponding buttons, and the functions will be disabled. When the ON/OFF function is locked, the Collective ON/OFF button will be enabled.

Example) ON/OFF operation lock

During receiving the external input signal

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

■Displays the emergency stop level-signal input*

Operation restrictions

If the ON/OFF, Mode, and Temperature buttons on the AT-50A are disabled from other controllers, will appear on the buttons, and these buttons will not be available for selection. If the AT-50A denies other controllers access to itself, other controllers cannot disable the functions on the AT-50A.

■Displays ON/OFF level-signal input

The button cannot be operated.

Page 13

Menu Screen

The Main Menu screen allows the user to configure the basic settings. To access the [Main Menu] screen, touch the

[Menu] screen.

icon at the right top corner of the [HOME] or the

Main Menu screen (Top screen)

1 [HOME] button

Accesses the [HOME] screen.

3 4

1 Operation Setting

(1) Time and Schedule Sets the date, time, schedules, and Setback control. (2) Collective Operation Setting Sets the collective operation settings. (3) Group Icon Setting

Changes the behavior of the group icon on the HOME screen. * Three setting options are available.

2 Restriction Settings

(1) Lock Buttons Locks the buttons and the functions on the AT-50A. (2) Set Temperature Range Limit Sets the temperature range for the local remote controllers. (3) Prohibit Remote Controller Locks the buttons* on the local remote controllers.

(4) Operation Mode Selection

Limit

ON/OFF

* Limits the operation mode selection.

, Mode, Set Temperature, and Filter Reset buttons

3 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.

(2) Function Key Setting Assigns the functions to the F1 and F2 buttons.

* Setback, Schedule, Mode, Temperature Correction, and RC

Prohibition can be assigned. (3) Volume Control Sets the sound volume and screen brightness. (4) Touch Panel Calibration Calibrates the touch panel.

P26 P38 P41

P42 P44 P46

P48

P50

P54

P55 P56

2 Back button

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

3 Touch Panel Cleaning button P61

Touch this button to access the screen that will not respond when touched (except when the numbers in the four corners are touched in a specified order), allowing the user to clean the touch panel without accidentally changing the settings.

4 Service Menu button

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

4 System Management

(1) Status List Displays errors and filter signs. (2) System-Changeover Selects the System-Changeover* setting.

* Automatically switches the entire system to Cooling or

Heating based on the room temperature and the preset

temperature of each group.

This function cannot be used when the Operation Mode

Selection Limit function is used.

P57 P59

Page 14

Usage - Main Menu Settings

Operation Setting

Main Menu > Operation Setting

Main Menu > Operation Setting > Time and Schedule > Date and Time

ASetting the date, time, and display format

Main Menu > Operation Setting > Time and Schedule

1Time and Schedule

A B C D

Date tab Time tab

1. Touch the A Date and Time button on the [Time and Schedule] screen.

2. On the [Date and Time] screen, touch the 1 [Date] tab to set the date, or 2 [Time] tab to set the time.

3. Using the 3

4. 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 1/1/2011 12:00AM. ・If the clock is set forward, the operations that were scheduled to have taken place before the new

time will be cancelled.

Main Menu > Operation Setting > Time and Schedule > Set Schedules

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

BSetting the operation schedule

Types of schedules Number of operation patterns

Weekly

One Day

[Note] If a specific pattern is assigned to multiple groups or days and the configuration of the pattern is changed, the

26 27

Use to assign an operation pattern for each day of the week to be executed every week.

Use to assign unique operation patterns for specic dates (up to seven

days in advance, including the current date).

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.

Maximum 12 patterns

Maximum 5 patterns

Page 15

Usage - Main Menu Settings

Operation Setting (cont'd)

Schedule setting flowchart

Step 1 Select the Weekly or One Day tab.

Weekly

Step 2 Validity period.

Step 3 Select a group.

Step 4 Select days or dates.

Step 5 Assign a pattern to the selected days or dates.

Step 6 Configure the pattern.

One day

Set Schedule screens

Select Group and Days/Dates screen

Select Pattern screen

Edit Pattern screen

Seasonal settings screen

Schedule Setting Procedures

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

Days/Dates screen.

Current tab name

[Weekly] tab

2. Touch the Weekly or One Day tab. When the Weekly tab was selected, the “Seasonal settings” must be made as follows. (1) Touch the [Seasonal settings] button on the Select Group and Days/Date screen.

(The “Seasonal settings” button appears only on the [Weekly] screen.)

(2) Touch the button 1, and select the use or non-use of Weekly2.

[One Day] tab

On the [One day] tab, a 7-day schedule including today will be displayed.

"Seasonal Settings" btutton

Day (Date) grid

• [Weekly] screen Displays the pattern numbers that are assigned to groups and days.

) will appear on the top left corner of the cell to which One-

( day schedule is assigned. One-day pattern will override the Weekly pattern. The “Seasonal Settings” button will appear. On the button, the effective period that was selected on the Weekly Tab will appear. The effective period can be changed on the “Seasonal Settings” screen that will appear when the button is pressed.

• [One day] screen Displays the One-day schedule patterns that are assigned to specific dates.

: Use Weekly2 : Do not use Weekly2

buttons to select the use or non-use

(3) Use the

of Weekly1 and the effective period for Weekly2. If Weekly2 is set to “Do not use Weekly2,” the effective period cannot be set.

(4) Pressing the 3 OK button will take the screen back

to the Select Group and Days/Date screen, and the effective period on the “Seasonal Settings” button will be updated.If the effective periods for Weekly1 and Weekly2 overlap, the setting cannot be completed.

28 29

Page 16

Usage - Main Menu Settings

Operation Setting (cont'd)

3. Select the cell where a specific group and a day (date) intersect to assign a pattern. * Patterns can be copied, pasted, or deleted on the Select Group and Days/Dates screen.

e.g., The weekly schedule of a specific group can be copied and pasted to another group,

or the schedule pattern of a specific day can be copied and pasted to another day. Refer to P32 for details.

4. On the Select Pattern screen, select [--] (deselected) or one of the 12 or 5 patterns (between [P01] and

[P12] on the Weekly tab OR between [P01] and [P05] on the One Day tab). Each pattern can be newly configured, copied and pasted, or edited. See 1, 2, and 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.

Operation pattern numbers

Schedules events for the selected pattern

• Appears only if the selected pattern has been configured.

• The functions not supported by the selected group will appear underlined in red, and they will not be executed. * Touch the < > buttons to check the actions for each scheduled

event.

* Refer to P34 for icon definitions.

① To configure a new pattern using a blank pattern

Touch a blank pattern number, then touch the ⇒ 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.

button to access the Edit Pattern screen.

② To copy an existing pattern and paste it to selected days or dates

Touch a pattern number to select it, then touch the [OK] button to return to the Select Group and Day/ Date screen. To set the schedule for other groups or days/date ⇒ See Step 2. When setting is complete ⇒ See Step 10.

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.

Event No.

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

*1 The scheduled actions for each event will be displayed over two pages.

Use the scroll buttons to switch between the pages.

*2 On the Edit Pattern screen, the events of a specific pattern can be copied and pasted to another

pattern. Refer to P32 for details

Scheduled actions Event No. Scheduled actions

Scroll button

Air Flow Direction, Prohibit Remote Controller Operation

Page 17

Usage - Main Menu Settings

Operation Setting (cont'd)

6. Set the time and the actions for the selected event number.

Change values with the

buttons.

* Functions that can be included in each event are as follows: Execution Time, ON/OFF, Mode, Fan

Speed, Air Direction, Set Temperature, and Local Remote Controller Operation Prohibition settings. * Refer to P34 for icon definitions. * The Set Temperature must be set to a temperature within the range that was specified in the Initial

Settings 1/Basic Settings under the Service Menu.

Refer to the Installation Manual to change the temperature setting range.

7. When finished making the settings, touch the OK button to return to the Edit Pattern screen.

8. Repeat Steps 5 through 7 above to set as many events and the execution time for the events as necessary.

9. When finished, touch the Return button to return to the Select Group and Days/Date screen. To set the schedule for other groups or days/date ⇒ See Step 2.

When setting is complete ⇒ See Step 10.

. To exit the screen and return to the “Time and Schedule” screen, press on the “Select Group and

Days/Date” screen.

Copying, pasting, deleting, and inserting settings

Touch the icons repeatedly to select the desired one.

Copying and pasting the existing settings

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).

(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

5. Touch the OK button on the window that pops up.

Paste button.

Click on the checkbox next to the button to activate the Copy, Paste,

Delete, and Insert buttons.

Deleting selected settings

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.

2. Touch the Delete button.

3. Touch the OK button on the window that pops up.

Page 18

Usage - Main Menu Settings

Operation Setting (cont'd)

Inserting an event

1. Touch a row to insert an event above it. * A red checkmark will appear on the selected row.

2. Touch the * If the maximum number of events have been set, no more rows can be inserted.

Icon Definitions

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.

Insert button. A blank row will appear above the selected row.

Functions

Deselected *

On [green] Off [black]

Cooling Dry Fan Heating Auto

Bypass Heat Recovery Auto Damper

Quiet Low Mid High Auto

Setting 1

Setting 2 Setting 3 Setting 4 Setting 5

Permit Prohibit

Setting Options

Swing

Auto

Main Menu > Operation Setting > Time and Schedule > Setback Control

CSetting the Night setback function

Night setback function is a function that prevents indoor dew or extreme temperature rise by heating/ cooling automatically when the room temperature goes outside of the specific range during the set time period.

・When the air conditioning group with night setback function is off and when the temperature

exceeds the preset temperature, heating/cooling operation starts.

・If the room temperature is measured by the air-conditioner’s suction temperature sensor, the

temperature may not be correct when the air-conditioner is inactive and the air is not fresh. When the air-conditioner is inactive, using a remote sensor or a remote control sensor is recommended to measure room temperature correctly.

・If the temperature setting or ON/OFF operation is prohibited for this unit, Setback operation

cannot be used.

・If the operation mode change is prohibited or the operation mode selection is limited for this unit,

Setback function may not function properly.

When the night setback control is set, air conditioning group operates as shown below.

Setback operation stops

(when the temperature rise 3ºC/5.4ºF or the control time period is over)

Heating

Off

21ºC/69ºF

Lower limit temperature 12ºC/53ºF

Heating

21ºC/69ºF

When the temperature drops below the lower limit temperature

Room temperature

Heating

Setback operation starts.

Off

Heating

12ºC/53ºF

Setback control time period

(heating control)

Upper limit temperature 28ºC/83ºF

24ºC/75ºF

When the temperature rises above the upper limit temperature

Cooling

Room temperature

Cooling

Off

Setback control time period

(cooling control)

Setback operation starts.

Cooling

28ºC/83ºF

3ºC/5.4ºF

Cooling

Off

24ºC/75ºF

If “Unscheduled” is selected, the Setback function that were set on the Setback Control screen will not be executed with the pressing of the Collective Operation button. In this case, the settings that were made on the “Collective Operation Setback” screen will override the settings made on the “Setback Control” screen, and the scheduled operation will not run.

1. Touch the C Setback Control button on the [Time and Schedule] screen.

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

1 5

Page 19

Usage - Main Menu Settings

Operation Setting (cont'd)

3. Press button 1 to bring up the “Control Time Period” and “lower/upper limit temperature” settings screen, and make necessary settings.

Setting of night setback control time period

Touch the 2

Setting of lower/upper limit temperature

Touch the 3 When [--] is set, setback control will not be operated.

Click OK to close the popup window and return to the “Setback Control” screen. The new settings will appear on the display section 4 on the screen. Pressing “Cancel” will close the popup window, but the new setting will not be reflected on the display section 4 on the screen.

4. Press the button labeled 5 to set different lower/upper limit temperature for different groups.

e groups whose temperature setting is different from the one for the collective setting will appear

underlined

5. Select the groups to include from the Group buttons labeled 6. By default, all groups are selected.

6. Touch the 7 Save button.

• The minimum difference between the upper and lower limits is 4ºC (8ºF).

• The temperature range that can be set depends on the connected units.

• The temperature can be set within the following range. [Upper limit] 19°C - 30°C [19°C - 30°C] / 67°F - 87°F [67°F - 87°F] [Lower limit] 12°C - 28°C [17°C - 28°C] / 53°F - 83°F [63°F - 83°F] * [ ] in case of using Mr.SLIM® units.

• The groups that do not support the Setback function cannot be selected.

• The changes that are made while the Setback function is turned on will not be reflected. To have

the settings reflected, turn off the Setback function and then turn it back on. Refer to P19 for how to turn on/off the Setback function.

• The Setback status can be verified by accessing the “Check Current Settings” screen from the

“Time and Schedule” screen.

buttons to set the control time.

buttons to set the upper and lower limits.

Main Menu > Operation Setting > Time and Schedule > Check Current Settings

DChecking the Weekly/One Day Schedule Settings

1. Touch the [Check Current Settings] button on the [Time and Schedule] screen.

[One Day] tab

[Weekly] tab

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.

Effective time for the Night Setback function

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 screen, and access the Set Schedules screen.

Day (Date) grid Displays scheduled patterns

• [Weekly] screen Displays the pattern numbers that are assigned to groups and days.

) will appear on the top left corner of the cell to which One-

( day schedule is assigned. One-day pattern will override the Weekly pattern.

• [One day] screen Displays the One-day schedule patterns that are assigned to specific dates.

Seasonal Settings (Weekly only)

Operation pattern numbers Schedules events for the selected pattern

• Appears only if the selected pattern has been configured.

• The functions not supported by the selected group will appear underlined in red, and they will not be executed. * Refer to P34 for icon definitions.

• The effective time for the Night Setback function will appear as a yellow line on the timeline.

button to return to the Time and Schedule

36 37

Page 20

Usage - Main Menu Settings

Operation Setting (cont'd)

Main Menu > Operation Setting

To select the groups on which to execute the Collective Operation (Enable or disable the Setback function)

Main Menu > Operation Setting > Collective Operation Setting

2Setting the Collective Operation Settings

1 3 5

・When appears on the “RC Prohibition” button, this function will not be available.

2 4 6

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

1. Touch the 1 ON/OFF button on the [Collective Operation Setting] screen.

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

3. Select the groups to include from the Group buttons labeled A. By default, all groups are selected.

4. Touch the B Save button.

Show Group Name List button Shows a list of group names in a pop-up window.

1. Touch the 2 Setback button on the [Collective Operation Setting] screen.

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

3. Touch the C buttons to set the upper and lower limits. Press the button labeled D 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 A. By default, all groups are selected.

5. Touch the B Save button.

・The minimum difference between the upper and lower limits is 4ºC (8ºF). ・The temperature range that can be set depends on the connected units. ・The groups that do not support the Setback function cannot be selected. ・The changes that are made while the Setback function is turned on will not be reflected. To

have the settings reflected, turn off the Setback function and then turn it back on. Refer to P19 for how to turn on/off the Setback function.

Select All button Selects all groups.

To select the groups on which to execute the Collective Operation (Enable or disable Scheduled operation)

1. Touch the 3 Schedule button on the [Collective Operation Setting] screen.

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

3. Select the groups to include from the Group buttons labeled A. By default, all groups are selected.

4. Touch the B Save button.

Show Group Name List button Shows a list of group names in a pop-up window.

Select All button Selects all groups.

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

Select All button Selects all groups.

Page 21

Usage - Main Menu Settings

Operation Setting (cont'd)

To select the groups on which to execute the Collective Operation (Operation Mode)

1. Touch the 4 Mode button on the [Collective Operation Setting] screen.

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

3. Select the groups to include from the Group buttons labeled A. By default, all groups are selected.

4. Touch the B Save button.

Select All button Selects all groups.

・

The DIDO controller groups and the LOSSNAY groups that do not support this function cannot be

selected.

To select the groups on which to execute the Collective Operation (Temperature Correction)

1. Touch the 5 Temperture Correction button on the [Collective Operation Setting] screen.

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

3. Select a value to be used as the temperature offset value from the buttons labeled C.

4. Select the groups to include from the Group buttons labeled A. By default, all groups are selected.

5. Touch the B Save button.

・The Temperature Correction function is used to temporarily raise or lower the preset temperature

setting by a certain preselected amount.

・Positive offset is used for units that are operated in the Cooling and Dry modes, and negative offset is

used for units that are operated in the Heating mode.

・The DIDO controller groups and the LOSSNAY groups that do not support this function cannot be

selected.

Select All button Selects all groups.

Show Group Name List button Shows a list of group names in a pop-up window.

To select the groups on which to execute the Collective Operation (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 6RC Prohibition button on the [Collective Operation Setting] screen.

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

3. Select the groups to include from the Group buttons labeled A. By default, all groups are selected.

4. Touch the B Save button.

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

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

Main Menu > Operation Setting

Main Menu > Operation Setting > Group Icon Setting

Indoor unit groups

○ ○ ○ × ○ × ○ ○

LOSSNAY groups

Show Group Name List button Shows a list of group names in a pop-up window.

Select All button Selects all groups.

1 2

3To assign an operation mode to the Group icon on the [HOME] screen

Touch the 3Group Icon Setting button on the [Operation Setting] screen.

Operation mode 1

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

2. Touch the 2 Save button.

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.

Page 22

Usage - Main Menu Settings

Restriction Settings

Main Menu > Restriction Settings

Main Menu > Restriction Settings > Lock Buttons

1Selecting the functions to be locked and setting the password to

unlock the locked functions

Selecting the functions to be locked

Category button

1. Touch the 1Lock Buttons button on the [Restriction Setting] screen.

2. Enter the password on the [Login] screen, and touch the log in. If the correct password is entered, the [Lock Buttons] screen will appear.

3. Press the figure above will appear. (The items in each category and the type of functions that can be locked are summarized in Table A.)

4. T

ouch

whose corresponding icon is

5. Touch the 3 Save button.

Category button 1 that includes the function to be locked. The screen that looks like the

the button

2 that corresponds to the function to be locked so that

cannot be locked.)

Table A. List of items and functions in each category

Category

button

or will not be available for selection.

Item

Schedule ON/OFF

42 43

Enable/Disable Lock button

Use these buttons to select the items to be locked when the operation lock button is enabled.

Save button

Saves the settings.

will appear. (The items

Function

Shcedule ON/OFF button *3 *4

Setting the Unlock password

Use the same password as the login password to unlock buttons.

Save button Saves the settings.

To log in

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

・If you forget the password, refer to the Installation Manual.

To change the password

1. Touch the 1 Lock Buttons button on the [Restriction Setting] screen.

2. Enter the 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. Press 1 . The screen that looks like the figure at left will appear.

4. To allow unlocking the buttons without entering the password, touch 2 “No password” to activate the

button. To require a password to unlock the buttons, touch 2“Password” to activate the button.

5. Touch the 3 Save button.

1. Enter the login password from the 1 keyboard on the touch panel. Touch 2

2. Touch the 3 Login button.

If the password matches, the Lock Buttons screen will be displayed.

necessary.

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

touch 4

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

* Password should be between four and eight characters. Touch 8 to delete a character.

3. 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.

to delete a character.

. The screen at left will appear.

Page 23

Usage - Main Menu Settings

Restriction Settings (cont'd)

Main Menu > Restriction 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).

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

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.

button until

Main Menu > Restriction Settings > Set Temperature Range Limit

2Setting the temperature ranges within which the operating

temperatures can be set from the local remote controllers

Show Group Name List button

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

Group buttons

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

Select All button Selects all groups.

1. Touch the 2 Set Temperature Range Limit button on the [Restriction 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.

Edit button

Edits the temperature range for the selected group.

buttons

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

• 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 AT-50A. 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.

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Usage - Main Menu Settings

Restriction Settings (cont'd)

Main Menu > Restriction Settings

・When appears on the “Prohibit Remote Controller” button, this function will not be available.

Main Menu > Restriction Settings> Prohibit Remote Controller

3Locking or unlocking access to the ON/OFF, Mode, Set Temperature,

and Filter Sign Reset settings from the local and other system controllers

Show Group Name List button

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

Edit button

Edits the temperature range for the selected group.

1. Touch the 3 Prohibit Remote Controller button on the [Restriction Settings].

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

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 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.)

・When this function is in use, the buttons on AT-50A cannot be

disabled from the system controller.

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

Locked → Unlocked

Group buttons

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

Select All button Selects all groups.

・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.

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

Indoor unit groups LOSSNAY groups

○ ○ ○ × ○ × ○ ○

buttons

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

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Page 25

Usage - Main Menu Settings

Restriction Settings (cont'd)

Main Menu > Restriction Settings

2 3

・When appears on the “Operation Mode Selection Limit” button, this function will not be available.

Main Menu > Restriction Settings> Operation Mode Selection Limit

4Operation mode selection limit (season changing)

Selection to specific operation modes with this controller or the local remote controller for all groups can be limited. For example, the mode selection can be limited according to the season. Cooling mode limit (winter), heating mode limit (summer), cooling + heating mode limit (between seasons)

1Button

No Limitation The limits will be cancelled. No Cooling Operation The cooling, dry and automatic modes cannot be selected with the Mode button. No Heating Operation The heating and automatic modes cannot be selected with the Mode button.

No Heating/Cooling

Press the button labeled 2 to set different limitation type for different groups. The groups whose limitation setting is different from the one for the collective setting will appear

underlined

3. Select the groups to include from the Group buttons labeled 3 .

4. Touch the 4 Save button.

・ When this function is used, the System-Changeover function cannot be used. ・Note that this function cannot be used with some indoor units. In this case, changeover of the

operation mode cannot be limited with the local remote controller.

Explanation

The cooling, dry, heating and automatic modes cannot be selected with the Mode button.

1. Touch the 4 Operation Mode Selection Limit button on the [Restriction Settings] screen.

2. Touch the 1 button to set the operation mode limit. * Touch the 1 button repeatedly to select from following settings.

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Page 26

Usage - Main Menu Settings

Control Panel

Main Menu > Control Panel

To show or hide the room temperature

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

Display Format screen：2/3

Show

Main Menu > Control Panel > Display Format

1Setting the basic display settings on the HOME and MENU screens

Touch the 1 Display Format button on the [Control Panel] screen.

・ The [Display Format] screen consists of three pages (1/3 - 3/3). Use the 4 buttons to flip

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

Display Format screen：1/3

1 2 3

To select the display language

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 7 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 .

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

Touch the 8 Automatic Mode Display Setting button to switch between Show ( ) and Hide (

Example) [HOME] screen

hideshow hideshow

To set the backlight timeout time

Touch the 9 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.

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Page 27

Usage - Main Menu Settings

Control Panel (cont'd)

Main Menu > Control Panel

Main Menu > Control Panel > Display Format

Display Format screen：3/3

Group Name Setting screen

To change the group name

1. Touch the 0 Jump to the group name setting screen button on the [Display Format] screen (3/3).

2. Select a desired group name button labeled a 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 b Copy and c Paste buttons.

4. Touch the 5 Save button.

Character input screen

To enter character strings such as group names (maximum 16 characters), perform the following procedure.

4 5 3

To enter a character string

1. Touch 1 , , , , or 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 * 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.

buttons to see all characters.

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Page 28

Usage - Main Menu Settings

Control Panel (cont'd)

Main Menu > Control Panel

Main Menu > Control Panel > Function Key Setting

2Assigning Collective Operation functions to the Function Button 1

(F1) and Function Button 2 (F2)

Touch the 2 Function Key Setting button on the [Control Panel] screen.

1. Touch the check mark [ ] that corresponds to the function to assign to F1 or F2 so that the checkmark will appear as [ ]. (Check the check mark in the F1 column to assign a function to F1, and check the check mark in the F2 column to assign a function to F2. Touch the button again so that the button will appear as [ ] to cancel the selection.)

2. Touch the 3 Save button.

・As a default, no functions are assigned to either F1 or F2. ・The F1 and the F2 will be effective only on the HOME screen. ・To use the F1 or F2 button to execute a function, certain settings for Collective Operation must be

set. (Refer to P38 for information about the Collective Operation settings.)

・If “ ” appears on the checkbox, the function that corresponds to the checkbox is not available and

the function cannot be assigned to the F1 or F2 button.

1 2

3 4

Main Menu > Control Panel > Volume Control

3Adjusting the volume and brightness

Touch the 3Volume Control button on the [Control Panel] screen.

1 2

To adjust the volume

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

→ [Level 2]→ [Level 3].

2. Touch the 3 Save button.

To adjust the brightness

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

[80%] → [90%]→ [100%].

2. Touch the 3 Save button. ・The volume and brightness settings will be changed immediately, but will not be saved until the

3 Save button is touched.

Page 29

Usage - Main Menu Settings

Control Panel (cont'd)

Main Menu > Control Panel > Touch Panel Calibration

4Calibrating the touch panel

1. Touch the 4 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.

・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.

System Management

Main Menu > System Management

Main Menu > System Management > Status List

1Checking or resetting the Error or Filter Sign

Touch the 1Status List button on the [System management] screen.

Number of errors

Displays the number of errors.

Group names

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

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 check the error

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.

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

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.

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Page 30

Usage - Main Menu Settings

System Management (cont'd)

Number of Filter Signs detected Displays the number of Filter Signs that

have been detected.

Main Menu > System Management

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.

・When appears on the Reset button, the button will not be available.

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.

・

When appears on the “System-Changeover” button, this function will not be available for

selection.

Main Menu > System Management > System-Changeover

2Using the System-Changeover function

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 P44), 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.

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Page 31

Usage - Main Menu Settings

Maintenance

System Management (cont'd)

Operation mode

Displays the current operation mode. Cooling: Heating:

Block No.

Displays the block number. All units in each group are operated in the same operation mode. The AT-50A automatically creates blocks based on the refrigerant pipe connection information and the group setting information on each unit.

1. Touch the 2System-Changeover button on the [System management] screen.

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

System-Changeover mode

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

Auto

Representative Group

Setting

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.

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.

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.

Display Block Information button

Displays the addresses of the outdoor units and the names of the groups in a

specific block.

Touch Panel Cleaning screen

To clean the touch panel

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

1. Touch the

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.

・

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.

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

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.

・The initial setting for the Representative Group is the group in a specific block with the smallest

group number.

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

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Page 32

Troubleshooting

Problem

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

Problem

is displayed on the screen.

Problem A Filter Sign is displayed on the screen.

Solution

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 P57.

Solution

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 P57.

Solution

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 P57.

Specifications

Power source

Operating conditions

Weight External dimensions (W x H x D)

*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 1-5 "System diagram" in the Installation Manual.

Temperature Humidity

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

Operating temperature range Storage temperature range 30%~90%RH (Non-condensing)

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

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

0 - 40˚C [32˚F - 104˚F]

-20 - +70˚C [-4˚F - +158˚F]

of AT-50A is "4."

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

If the external input interface receives an emergency stop signal, all indoor units and the LOSSNAY that are controlled by the AT-50A will stop. The AT-50A controller, low-level system controllers, or local remote controllers 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.

Page 33

This product is designed and intended for use in the residential, commercial and light-industrial environment.

This product at hand is based on the following EU regulations:

• Low Voltage Directive 2006/95/EC

• Electromagnetic Compatibility Directive 2004/108/EC

HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN Authorized representative in EU: MITSUBISHI ELECTRIC EUROPE B.V.

HARMAN HOUSE, 1 GEORGE STREET

, UXBRIDGE, MIDDLESEX UB8 1QQ, U.K.

WT06092X01

Mitsubishi AT-50A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual