Honeywell RTH2510Series - Select the fan setting; Fan Switch Settings

Operating Manual
69-2601EF—03 8
Select the fan setting
Set the FAN switch to Auto 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.
Set FAN switch to choose whether the fan
runs continuously or only as needed.
M32700
Heat Off Cool Auto On
Fan