Honeywell TH9421 Owner's Manual - Page 8
Fan setting
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Operating Manual Fan setting WED 70 FAN Inside AUTO SYSTEM HEAT 6:01 AM 70 Set To Following Schedule SCHED HOLD CLOCK SCREEN MORE Press FAN Note: If a fan schedule is programmed, "Auto" will run the fan schedule. Press FAN to select fan operation, then press DONE: • On: Fan is always on. • Auto: Fan runs only when the heating or cooling system is on. • Circ: Fan runs randomly, about 35% of the time, not counting any run time with the heating or cooling system. You can press FAN to override the fan settings you've programmed for different time periods (see page 9). If you select On or Circ, the setting you select will remain active until you press FAN again to select Auto, and return to the fan schedule (see page 28 for more information). 69-1815EFS-06 6