White Rodgers 1F92W-51 - Manual (Page 49)

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15. I live in an area where daylight savings time is
observed. How do I change the thermostat
clock twice a year without affecting thermo-
stat programming?
To change your clock, follow the instructions for
setting current time and day. See ENTERING
YOUR PROGRAM. Thermostat programming is
not affected when you change the clock.
17. Do I have to re-program my thermostat after
I change the battery?
When the thermostat is on the wall and the
system has power, the thermostat is being pow-
ered by a 24v AC source. If power is lost, or if the
thermostat is removed from the wall, the pro-
gram will be retained for approximately one
minute if there is no battery installed or if the
installed battery is dead. If you are changing the
battery after seeing a flashing BAT on the dis-
play, the installed battery may be dead. If you
remove the old battery and install a fresh one
within one minute, you may not lose your thermo-
stat programming. After installing a new battery,
follow the procedures in CHECK YOUR PRO-
GRAMMING to determine whether your pro-
gramming was maintained. If the thermostat
maintains programming, press SYSTEM
HEAT-OFF-COOL-AUTO
until
OFF is displayed, put the thermostat back on the
wall, press SYSTEM
HEAT-OFF-COOL-AUTO
to select the operating mode
you want, then press RUN
PRGM
to start program
operation. If the program is lost, re-program the
thermostat. See PROGRAMMING YOUR THER-
MOSTAT.