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18. Do I have to reprogram my thermostat after
I change the batteries?
When the thermostat is on the wall and the
system has power, the thermostat is being
powered by a 24v AC source. If power is lost,
or if the thermostat is removed from the wall,
the program will be retained for approximately
one minute if there are no batteries installed
or if the installed batteries are dead. If you are
changing the batteries after seeing a flashing
BATTERY on the display, the installed batter-
ies may be dead. If you remove the old
batteries and install fresh ones within one
minute, you should not lose your thermostat
programming. After installing new batteries,
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,
reprogram the thermostat. See PROGRAM-
MING YOUR THERMOSTAT.