Deep Standby

The device also has the ability to automatically enter “Deep Standby” whenever the wired network connections are removed for more than 60 minutes in Quick Start Mode. Power indicator will turn off during Deep Standby. Please note that the HEOS cannot be operated as intended when in Deep Standby as there is no network connection.
To “wake” a HEOS device from Deep Standby, you must press the standby button which will immediately turn on Power indicator. The Device may need to "find" the network before it can operate properly.
Power button for more than 6 seconds, the device enter Deep Standby.