Multiple Group Selection Screen; Disabling Functions; Lock Buttons; During Receiving The External Input Signal - Mitsubishi Electric AT-50B Instruction Book

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.
(1)

Disabling functions

Lock Buttons

When AT-50B locks its own functions for ON/OFF, Mode, Set Temperature, Fan speed, or Disable-
Scheduled-Operation button, the icon above will appear on the corresponding buttons, and the functions
will be disabled.
When the ON/OFF button is locked, the Collective ON/OFF button will be enabled.
Example) ON/OFF button locked

During receiving the external input signal

The ON/OFF button cannot be operated in the following situations.
■ When "Emergency Stop (Level signal)" is displayed
Operation restrictions
If the ON/OFF, Mode, Set Temperature, Air Direction, and Fan Speed buttons on the AT-50B are
disabled from other controllers,
for selection. (The buttons may not be disabled depending on the models of the connected indoor unit,
controllers, and remote controllers.)
If the AT-50B denies other controllers access to itself (or the "Operation Prohibition Setting" is set to
"Enabled"), other controllers cannot disable the functions on the AT-50B.
■ When the external input setting is "ON/OFF (Level signal)"
will appear on the buttons, and these buttons will not be available
* To operate the air conditioning unit group
Check the selected groups.
Touch (1) to show the
selected group confirmation
screen.
The button cannot
be operated.
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