Honeywell RTH7500D Owner's Manual page 42

Set Fan Setting
1. Press System & Fan button.
2. Press the Fan button to select Auto or On:
Auto—Normal setting for most homes.The fan
runs only when the heating or cooling system
is on.
On—The fan runs continuously. Use this setting
for improved air circulation or for more efficient
air cleaning.
69-1730
Set System Setting (Cont)
System Auto
Em Heat Off Cool
System & Fan
Fan Auto
FanUseEdit
CancelDone
42
M22305