Honeywell RTH5100B Manuel D'utilisation page 8

Operating Manual
Select the fan setting About your new thermostat
Fan System
Auto
Fan System
On
69-2330EFS—01
Press the FAN button to select Auto
Cool or On.
In "Auto" mode (the most commonly
used setting), the fan runs only
when the heating or cooling system
is on. If set to "On," the fan runs
continuously.
Cool
M28303
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