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
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 until
OFF is displayed, put the thermostat back on the
wall, press | SYSTEM | to select the operating mode |
RUN
you want, then press PRGM to start program
operation. If the program is lost,
MOSTAT.
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