Hisense PureFlat RF22B3FSE Operation Manual page 21

Display controls
Demo mode
Demo mode is for store display, and it
prevents the refrigerator from
generating cool air. In this of Cooling Off
Mode, the refrigerator may seem like it is
working but it will not make cool air.
If you enter the Demo mode, the
temperature area will show " ". To
switch off Demo mode, press and hold
" " and " " keys at the same time for 5
seconds and the buzzer gave a long
sound.
NOTE: The Demo Mode stays on even if
the refrigerator powers off. If the
consumers enter the mode with
unintentional operation, you should exit
as soon as possible, since the
refrigerator will not cool in this mode,
which will cause the food going bad.
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