Xiaomi Mi 2H Mode D'emploi page 7

When the filter is saturated by harmful gases,
it may give off odors. Please place the filter in a
sunny and ventilated place to eliminate odors.
1
Filter Replacement:
1. Please refer to the Filter
Replacement label on the inside
of the filter compartment panel
for detailed instructions.
2
,
2. After replacing the filter turn on
the purifier, and press and hold the
filter reset button for 6 seconds. A
beeping sound indicates that the
filter has been successfully replaced,
and the filter service time has been
reset.
6
Resetting the Wi-Fi:
If your phone is unable to connect
to the air purifier, simultaneously
press and hold the mode and
the light button for 5 seconds. A
beeping sound indicates that Wi-Fi
has been successfully reset.