White Rodgers 1 F 78 User Manual

www.white-rodgers.com

6

wish, you may adjust your new thermostat temperature dis-
play to match your old thermostat. This can be accomplished 
(within a ±3° range) as follows:

1.  Press PRGM and RUN buttons at the same time.

2. Press 

 or 

 to adjust the displayed temperature to 

your desired setting.

3.  Press RUN to resume normal program operation.

•  Display Backlight — (Not available on earlier models.) The 

display backlight improves display contrast in low lighting 
conditions. Selecting backlight ON will turn the light on for 
a short period of time after any button is pressed. Selecting 
backlight OFF (default) will keep the light off. Turn the dis-
play backlight feature ON as follows:

1.  Press TIME and RUN buttons at the same time. The display 

will show “d-L” and “OFF” alternately.

2. Press 

 or 

 to change “OFF” to “ON” 

This section will help you plan your thermostat’s program to meet 
your needs. For maximum comfort and effi ciency, keep the follow-
ing guidelines in mind when planning your program.

•  When heating (cooling) your building, program the tempera-

tures to be cooler (warmer) when the building is vacant or dur-
ing periods of low activity.

•  During early morning hours, the need for cooling is usually 

minimal.

Look at the factory preprogrammed times and temperatures shown 
below. If this program will suit your needs, simply press the RUN 
button to begin running the factory preset program.
If you want to change the preprogrammed times and temperatures, 
follow these steps.

Determine the time periods and temperatures for your weekday 
and weekend programs. You must program four periods for both the 
weekday and weekend program. However, you may use the same 
heating and cooling temperatures for consecutive time periods. You 
can choose start times, heating temperatures, and cooling tem-
peratures independently for both weekday and weekend programs 
(for example, you may select 5:00 AM and 70° as the weekday 1st 
period heating start time and temperature, and also choose 7:00 
AM and 76° as the weekday 1st period cooling start time and 
temperature). Use the table at the bottom of the page to plan your 
program time periods and the temperatures you want during each 
period. You may also want to look at the sample program table to 
get an idea of how the thermostat can be programmed.

6:00 AM

8:00 AM

5:00 PM

10:00 PM

6:00 AM

8:00 AM

5:00 PM

10:00 PM

6:00 AM

8:00 AM

5:00 PM

10:00 PM

6:00 AM

8:00 AM

5:00 PM

10:00 PM

70 F

62 F

70 F

62 F

78 F

85 F

78 F

82 F

70 F

62 F

70 F

62 F

78 F

85 F

78 F

82 F

Start
Time

Temperature

Start
Time

Temperature

Period

Follow these steps to enter the heating and cooling programs you 
have selected.

1.  Press TIME button once. The display will show the hour only.

 EXAMPLE: 

PM

 

2.  Press and hold either 

 or 

 until you reach the correct 

hour and AM/PM designation (AM begins at midnight; PM be-
gins at noon).

3.  Press TIME once. The display window will show the minutes 

only.

    EXAMPLE: 

4.  Press and hold either 

 or 

 until you reach the correct 

minutes.

5.  Press TIME once. The display will show the day of the week.

6. Press 

 or 

 until you reach the current day of the week.

7.  Press  RUN once. The display will show the correct time and 

room temperature alternately.

1.  Move the SYSTEM switch to HEAT.

2.  Press PRGM once. “A” (indicating weekday program) will appear 

in the display. Also displayed are the currently programmed start 
time for the 1st heating period and the currently programmed 
temperature (fl ashing).

    EXAMPLE: 

AM

MO TU WE TH FR

This display window shows that for the 1st weekday period, the 
start time is 6:00 AM, and 70° is the programmed temperature 
(this example refl ects factory preprogramming).

3. Press 

 or 

 to change the displayed temperature to your 

selected temperature for the 1st heating program period. 

4.  Press TIME once (the programmed time will fl ash). Press 

 

or 

 until your selected time appears. The time will change 

in 15 minute increments. When your selected time is displayed, 
press TIME again to return to the change temperature mode.

5.  Press PRGM once. The currently programmed start time and 

setpoint temperature for the 2nd heating program period will 
appear.

Start
Time

Temperature

Start
Time

Temperature

Period