White Rodgers 1F90-51 Operation Manual page 22

SET
5. Press once. The display will show the
DAY
day of the week as an abbreviation (MO for
Monday, TU for Tuesday, etc.).
6. Press and hold either
reach the current day of the week.
7. Press RUN once. The display will show the
PRGM
correct time and room temperature alter-
nately.
Enter Heating Program
During programming, if you don't press any
buttons for 5 minutes, the thermostat will enter
the HOLD mode and will maintain a constant
temperature. The display will revert to the alter-
nating time/temperature display. To resume pro-
gramming after this happens, press
22
TIME or TIME until you
FWD BACK
VIEW until
PRGM
you are at the point where you stopped program-
ming. Then you may continue to enter your
programs normally. If you want to stop program-
ming at any time, simply press
program operation.
SYSTEM
1. Press until HEAT is displayed.
SWITCH
2. Press VIEW once. 5 DAY (indicating weekday
PRGM
program), and MOR, representing the morn-
ing heating period, will appear in the dis-
play. Also displayed are the currently pro-
grammed start time for the MOR period and
the currently programmed temperature.
EXAMPLE:
5 DAY
This display window shows that for the
weekday MOR period, the start time is 5:00
RUN
to resume
PRGM