
Operating Manual
69-2636ES—03 20
In case of difficulty
If you have difficulty with your thermostat, please try the following suggestions.
Most problems can be corrected quickly and easily.
Display is blank
• Make sure fresh AA alkaline batteries are correctly installed
(see page 18).
Temperature
settings do not
change
Make sure heating and cooling temperatures are set to acceptable ranges:
• Heat: 40° to 90°F (4.5° to 32°C).
• Cool: 50° to 99°F (10° to 37°C).
To restore default
schedule settings
Follow these steps to restore default schedule settings (see page 10):
1. Press
SET
CLOCK/DAY/SCHEDULE
.
2. Press
SET
SCHEDULE
.
3. Press
DONE
and
NEXT
at the same time for 4 seconds.