Bryant Programmable Thermidistat Owner's Manual page 16

PROGRAMMING THE THERMIDISTAT CONTROL
NOTE: With the FAN indicator on, you will realize
maximum humidification, but the air may feel cold
because the heat source is not always on. With the
FAN indicator off, you will conserve water and
electricity with adequate humidification.
b. AUTO indicator displayed — humidify
setting automatically changes according to
outdoor weather. This reduces the chance of
moisture buildup on windows in colder
weather.
NOTE: This feature requires the use of the outdoor
air temperature sensor.
c. AUTO and FAN displayed — combines
the features of a and b.
d. OF displayed — humidify function is
turned off.
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