White Rodgers 1F94W-71 - Manual (Page 39)

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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 thermostat programming?
To change your clock, follow the instruc-
tions for setting current time and day. See
ENTERING YOUR PROGRAM. Thermo-
stat programming is not affected when you
change the clock.
16. Do I have to reprogram my thermostat
after I change the battery?
When the thermostat is on the wall and the
system has power, the thermostat is being
powered by a 24 VAC source. If power is
lost, or if the thermostat is removed from the
wall, the program will be retained for ap-
proximately one minute if there is no bat-
tery installed or if the installed battery is
dead. If you are changing the battery after
seeing a flashing BATTERY on the display,
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 thermostat programming. After install-
ing a new battery, follow the procedures in
CHECK YOUR PROGRAMMING to deter-
mine whether your programming was main-
tained. If the thermostat maintains program-
ming, press SYSTEM
HEAT/EMER/OFF/
COOL/AUTO
until OFF is displayed,
put the thermostat back on the wall, press
SYSTEM
HEAT/EMER/OFF/
COOL/AUTO
to select the operating mode you
want, then press RUN
PRGM
to start program
operation. If programming is lost, you must
reprogram the thermostat. See PROGRAM-
MING YOUR THERMOSTAT.