White Rodgers 1F91W-71 User Manual

Page 10

The Thermostat Buttons

Sets the system mode (HEATing, OFF,
COOLing, or AUTOmatic changeover [user
selectable feature]).
Selects fan operation (see #6, above). This
button is also used to program the fan to run
continuously during a program period.
Runs display forward or backward through
time, day, or anticipation settings during
programming.

Used in conjunction with

TIME
FWD

and

TIME

BACK

set current time and day of the week.
Used during programming to set the day of
the week. Also used in conjunction with

SET

CLOCK

to enter anticipation setting mode.

Used to initiate or review thermostat pro-
gramming.

Used to start program operation after pro-
gramming. Also used to return thermostat
to program operation after being in HOLD
mode.
Used to manually override programming to
hold at a selected temperature (when HOLD
is displayed).
Used to advance thermostat program to the
next program period (for example, from the
MOR program to the DAY program).

(Blue arrow) Lowers temperature set-

ting (40

F or 4

C minimum).

(Red arrow) Raises temperature set-

ting (99

F or 37

C maximum)

The red light is on when the 1st stage
heating/cooling system is operating. The
yellow light is on when the 2nd or 3rd stage
heating/cooling system is operating.