15.I live in an area where daylight savings time is observed. How do I change my thermostat clock twice a year without affecting 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 changing 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 5 seconds 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 display, the installed battery may be dead. If you remove and replace the battery with a fresh one quickly, you may not lose your programming. After installing the new battery, follow the proce- dures in CHECK YOUR PROGRAMMING to determine whether your programming was maintained. If the thermostat maintains
programming, press SYSTEM until OFF is
HEAT - OFF - COOL - AUTO
displayed, put the thermostat back on the
wall, press SYSTEM to select the operating
HEAT - OFF - COOL - AUTO
mode you want, then press RUN to start
PRGM
program operation. If programming is lost, you must reprogram the thermostat. See
PROGRAMMING YOUR THERMOSTAT.
39
