Mitsubishi Electric AG-150A Instruction Book page 27

Depending on the status of each group, the following icons will appear on the icons mentioned above.
During an error
During energy-save control
* During energy-save operation, the energy-save icon will appear over the intake air temperature.
* When setting ventilation interlock with Mr. Slim units, the air conditioning and interlocked ventilation icon will display ON even when the
interlocked LOSSNAY is operating by itself.
(This will occur when used with the following M-NET adapter: PAC-SF48/50/60/70/80/81MA-E)
* When multiple AG-150A controllers are connected by connecting an Expansion controller to the system, "Schedule setting enabled,"
"Energy-save control," and "During night setback" will be displayed only on the AG-150A controller that is executing these functions.
* The energy saving icon is displayed while the energy-saving control is performed in a group of indoor units and in the outdoor unit
belonged to that group.
* If a given LOSSNAY unit is interlocked with multiple indoor unit groups, the LOSSNAY unit may be in operation even when the display
shows that the unit is stopped.
* Switching between display or non-display of room temperature is possible on the LCD display and the Initial setting screen.
Interlocked unit ON
Intake air temperature
display
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Interlocked unit OFF
During night setback
Schedule setting enabled
Unknown (during initial
startup)