Chapter 2. Initial Setting - Mitsubishi Electric AT-50B Installation Manual

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-50B 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-50B Advanced Touch Controller
Function 1 button with LED
Function 2 button with LED
Power LED
List of functions available under the Service Menu
Screen Setting
M-NET address
Main system controller/sub
system controller
Operation prohibit setting
(Used/Not used)
Remote controller access
Basic
System
External input mode
Filter sign
Dry mode
Operation mode control
Time notification
*3
Groups
Groups
Interlocked operation
Batch deletion
System View
Malfunction Log
Maintenance
Gas Amount Check
Software update
Test Run Test Run
*1 Refer to section 1-5 "Note."
*2 Available only when AT-50B is set as a main controller.
*3 AHC (Advanced HVAC CONTROLLER) cannot be controlled from AT-50B.
Sets the M-NET address for the AT-50B.
Sets the system controller as the main or sub.
*1
Use to select the type of controller from which to prohibit the access of the local
remote controllers (from other system controllers).
Selects the type of controllers to prohibit access* from (remote controllers only or
both remote controllers and sub system controllers).
* Access to ON/OFF, Mode, Set Temp, Filter Reset, Air Direction, Fan Speed,
Timer, and Check Water sign (Air To Water (PWFY) ).
Selects the external input mode.
Displays or suppresses the filter sign on the HOME screen.
Includes or excludes Dry mode as an option for the operation mode.
*2
Selects the function "System-Changeover" or "Operation Mode Selection Limit".
Sets a daily time alarm to synchronize the clock with the controllers and units
connected to the same M-NET.
Makes the group settings for the indoor units, Air To Water (PWFY), LOSSNAY
units, DIDO controllers (PAC-YG66DCA), remote controllers, and sub system
controllers.
Enters the interlock settings between indoor and LOSSNAY units.
*2
Deletes all group and interlock settings collectively.
Displays the information about the indoor units connected to each outdoor unit.
Stores the latest errors. (up to 50)
*2
Use to check for refrigerant leak from the outdoor unit.
Updates software.
Runs a test on the connected air conditioning units.
Function
– 10 –
Collective ON/OFF
button with LED
Touch panel
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