Jacuzzi frame 100 Use & Maintenance page 51

"Stand-by" mode
If no key is pressed for a few seconds, the system switches
from the "awaiting instructions" mode to "stand-by" mode.
TOP model
The control panel only shows the "on/off" key illuminated white.
Press the "on/off" key again to reactivate the control panel
("awaiting instructions" mode) and then activate the electronic
functions.
TT model
The control panel shows all keys illuminated with a white light, with
reduced intensity.
Press any key again to reactivate the control panel ("awaiting
instructions" mode) and then activate the electronic functions.
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