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 | until OFF is displayed, |
HEAT/EMER/OFF/ | ||
| COOL/AUTO |
|
put the thermostat back on the wall, press
SYSTEM | to select the operating mode you | ||
HEAT/EMER/OFF/ | |||
COOL/AUTO |
|
|
|
want, | then press | RUN | to start program |
PRGM | |||
operation. If programming is lost, you must reprogram the thermostat. See PROGRAM-
MING YOUR THERMOSTAT.
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