– 9 –
Chapter 2. Initial Setting
This chapter contains information about the settings to be made at the time of installation. Please read the instructions carefully and make
the settings accordingly. Refer to Chapter 1. “Installation” for how to install the AT-50A Advanced Touch Controller, and refer to the air
conditioning unit installation manuals for how to connect the controller cable to the air conditioning units, or how to install the air conditioning
units. Please remember to give all manuals to the end users after installation is complete.
2-1. AT-50A Advanced Touch Controller
List of functions available under the “Service menu”
(*1) Refer to section 1-5 “Note.”
(*2) Available only when AT-50A is set as a main controller.
Screen
Setting
Function
Page
Basic
settings
M-NET address
Sets the M-NET address for the AT-50A.
12
Main system controller/
sub system controller (*1)
Set the system controller as the main or sub.
12
Operation prohibit setting
(Used/Not used)
Use to select the type of controller from which to prohibit the access of the local
remote controllers (from other system controllers).
12
Remote controller access
Selects the type of controllers to prohibit access* from (remote controllers only or
both remote controllers and system controllers).
* Access to ON/OFF, Mode, Set Temp, and Filter Reset.
12
External input mode
Selects the external input mode.
12
Filter sign
Displays or suppresses the Filter sign on the HOME screen.
12
Dry mode
Includes or excludes Dry mode as an option for the operation mode.
12
Set temperature range
(Schedule)
Selects the settable temperature range:
Standard: 19°C (67°F) to 28°C (83°F); Low: 8°C (46°F) to 30°C (87°F);
Manual: Settable to any arbitrary range between 8°C (46°F) and 30°C (87°F).
12
Time notification
Sends or does not send the clock synchronization signal once a day to the
controllers and units.
13
Operation mode control
(*2)
Selects the function “System-Changeover” or “Operation Mode Selection Limit”.
13
Group
settings
Groups
Makes the group settings for the indoor units, LOSSNAY units, DIDO controllers
(PAC-YG66DCA), remote controllers, and sub-system controllers.
13
Interlocked operation
Enters the interlock settings between indoor and LOSSNAY units.
14
Batch deletion (*2)
Deletes all group and interlock settings collectively.
14
Maintenance
System view
Displays the information about the indoor units connected to each outdoor unit.
15
Malfunction log
Stores the latest errors. (up to 50)
15
Checking the Gas Amount
(*2)
Use to check for refrigerant leak from the outdoor unit.
15
Software update
Updates software.
16
Test run
Test run
Runs a test on the connected air conditioning units.
15
Function 1 button with LED
Function 2 button with LED
Power LED
Collective ON/OFF
button with LED
Touch panel
