Hitachi PSC-A32MN Installation And Operation Manual page 38

Operation
5.2.2.3 Simultaneous Run/Stop for All Groups
1 Tap "All Groups" on the touchscreen display.
2 Tap "Run all gr." to run all the groups simultaneously.
Tap "Stop all gr." to stop all the groups simultaneously.
(1)
3 The confirmation window is displayed. Tap "Yes" for simultaneous operation of all indoor units connected to the central station.
Tap "No" to cancel this command.
(3)
30 PMML0332A rev.0 - 05/2015
?
N O T E
The commands to run all the groups and stop all the groups have no effect
on the groups specified in "Exception Setting of Run/Stop Operation".
(2)