Honeywell T8400C Owner's Manual - Page 3

Settings

Page 3 highlights

Settings Setting FAN and SYSTEM Switches Fan and system settings are controlled by using FAN and SYSTEM switches located on the bottom of the thermostat case. First set the FAN switch: Auto: Normal setting for most homes. In cooling, the fan goes off and on with the cooling equipment. In heating, the fan may start a few minutes after the heating equipment comes on. On: The fan runs continuously. Use for improved air circulation and air quality. FAN Auto On FAN SWITCH M10273 3 69-1490

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Settings
Setting FAN and SYSTEM Switches
Fan and system settings are controlled by using FAN and
SYSTEM switches located on the bottom of the thermostat
case.
First set the FAN switch:
Auto:
Normal setting for most homes. In cooling, the
fan goes off and on with the cooling equipment.
In heating, the fan may start a few minutes after
the heating equipment comes on.
On:
The fan runs continuously. Use for improved air
circulation and air quality.
FAN
Auto On
FAN
SWITCH
M10273