White Rodgers 1F90W-71 Operation Manual page 8

The Display
1
Continuously displays system mode (HEAT,
OFF, COOL, AUTO, HOLD). During pro-
gramming, the program period is displayed
(MOR, DAY, EVE, or NHT).
2
Alternately displays room temperature (F
denotes degrees Fahrenheit and C denotes
degrees Celsius) and time of day (A de-
notes AM time and P denotes PM time).
3
Displays the setpoint temperature.
4
5 DAY indicates that the displayed program
is the weekday program. 2 DAY indicates
that the displayed program is the weekend
program.
8
5
The word BATTERY flashes on the display
when the "AA" alkaline batteries are weak
and should be replaced. The word BAT-
TERY is displayed continuously (non-flash-
ing) when thermostat is running on battery
power only.
6
FAN ON is displayed when the blower is
operating continuously. FAN AUTO is dis-
played during automatic fan operation (when
the blower cycles with the heating or cooling
system).