Mitsubishi Electric AT-50A User Manual

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

Mitsubishi Electric AT-50A Specifications

General

Brand	Mitsubishi Electric
Model	AT-50A
Category	Touch Panel
Language	English

Summary

Safety Precautions

General precautions

General safety advice and warnings for the controller's use and environment.

Precautions during installation

Guidelines for safely installing the controller, including handling materials and connections.

Additional precautions

Further safety advice, including maintenance, cleaning, and handling of the controller.

Function List

Restriction Settings

Troubleshooting

Problem diagnosis and solutions for common issues.

Names and Functions of Controller Components

Touch panel / Buttons

Detailed description of the touch panel and physical buttons on the AT-50A.

Basic Operations

Screen selection

ON/OFF operation

Temperature setting

"Disable scheduled operation" button

Group selection

Steps for selecting groups for collective operation.

Mode

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

Configuration options for ventilation, fan speed, air direction, and louvers.

Multiple group selection screen

Operation mode 1, 2, 3

Collective Operation Panel

Panel for executing collective operations like setback, schedule, mode.

Performing Collective Operation

Steps to perform collective operations using the control panel.

Disabling functions

Menu Screen

Main Menu screen (Top screen)

Overview of the Main Menu structure and its main categories.

Operation Setting

Time and Schedule

Setting date, time, and operational schedules.

Collective Operation Setting

Configuring collective operations for multiple groups.

Group Icon Setting

Customizing the behavior of group icons on the HOME screen.

Operation Setting (cont'd)

Schedule setting flowchart

To configure a new pattern using a blank pattern

Copying and pasting the existing settings

Inserting an event

Setting of night setback control time period

Collective Operation for Setback Function

Collective Operation Mode Selection

Schedule Setting Procedures

Deleting selected settings

Setting the Night setback function

Configuration of the night setback function for temperature control.

Setting of lower/upper limit temperature

Collective ON/OFF Operation Group Selection

Remote Controller Access Restriction

Locking/unlocking access to settings from local/other controllers.

Checking the Weekly/One Day Schedule Settings

Collective Operation for Scheduled Operation

Collective Operation Temperature Correction

Group Icon Operation Mode Assignment

Restriction Settings

Lock Buttons

How to lock/unlock buttons and assign passwords.

Setting the Unlock password

Restriction Settings (cont'd)

Set Temperature Range Limit

Setting temperature limits for local remote controller operations.

Prohibit Remote Controller

Locking/unlocking specific settings from remote controllers.

Operation Mode Selection Limit

Limiting available operation modes for groups.

Operation mode selection limit (season changing)

Control Panel

Display Format

Configuring display settings like language, temperature unit, and icons.

Control Panel (cont'd)

Group Name Setting

Function Key Setting

Assigning functions to the F1 and F2 buttons.

Touch Panel Calibration

Volume Control

System Management

Status List

System-Changeover

Automatic mode switching based on temperature.

System Management (cont'd)

Using the System-Changeover function

Troubleshooting

Collective ON/OFF Button Blinking

Troubleshooting step for a blinking Collective ON/OFF button indicator.

Question Mark Icon Display

Troubleshooting for the '?' icon indicating errors or status.

Filter Sign Display

Troubleshooting for the Filter Sign indicating maintenance is needed.

Emergency Stop Signal

Troubleshooting when the controller is unresponsive due to an emergency stop signal.