Aero goes to standby on its own
By default, the Manhattan Aero goes into standby after 20 minutes without a button press while nothing is playing, for example when it’s left on a menu. This is a UK energy-efficiency (ErP) requirement that applies to all set-top boxes.
(If the Aero switches itself off the moment you turn it on, rather than after a period of inactivity, see Aero turns itself off when you turn it on.)
From software 19.1021.153 (May 2026), you can change this behaviour:
Settings → System → Power & Energy Saving → Standby When Inactive
Switch it off if you want the Aero to stay awake all the time. Leave it on if you’d rather it switched itself off after a period of inactivity to save energy.
The same menu also has Auto Power Off, which switches the Aero off after a set time, four hours by default. Turn that off as well if you want the Aero to stay on all day, for example as a radio or music player.
If you don’t see this setting, your Aero may still be on an earlier software version. You can check for an update through Settings → System → Software Updates → Check for Updates.