PEUGEOT 508 Handbook page 96

Comfort
4. Air fl ow adjustment
Press this "full fan" button
to increase the air flow.
The air flow symbol, the fan, fills progressively
as the fan speed increases.
Press this "empty fan" button
to reduce the air flow.
94
Deactivating the system
Press the "empty fan" air flow
button until the fan disappears
and "- -" appears.
This action stops all of the functions of the air
conditioning system.
Thermal comfort is no longer controlled.
However, a slight air flow may still be felt,
resulting from the forward movement of
the vehicle.