White Rodgers 1F91-71 Thermostat User Manual


 
8
Other than and , the buttons are
located behind the thermostat door. To open
the door, use your fingernail in the indentation
at the top center of the door. Pull the door out,
then swing the door down on its hinges.
Following are brief descriptions of the display
and the thermostat buttons.
The Display
1
Continuously displays system mode (HEAT,
OFF, COOL, AUTO, HOLD). During pro-
gramming, the program period is displayed
(MOR, DAY, EVE, NHT).
2
Alternately displays room temperature (F
denotes degrees Fahrenheit and C de-
notes degrees Celsius) and time of day (A
denotes 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.
5
The word BAT flashes on the display when
the 9 volt alkaline battery is weak and
should be replaced.
6
FAN is displayed when the blower is
operating continuously, regardless of heat-
ing or cooling system cycling. FAN is
displayed during automatic fan operation
(when the blower cycles with the heating or
cooling system).