TCL H8W25WQ Manuel De L'utilisateur page 19

In Sleep mode, the air conditioning temperature will increase
Sleep
by 2 degrees in 1 hour (1 degree every 30 minutes), then the
(On Remote Control)
temperature will remain constant for 7 hours at which the
temperature will return to the initial temperature.
NOTE: Button sounds are muted, and all display indicator lights
turn off after 15 seconds except for the Sleep mode indicator.
LED Display
(On Remote Control)
Turn on/off the display
Press and hold for 5 seconds to switch between °F/°C.
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