user manual

Operating Manual
69-1921EFS—03 18
About your new thermostat
ENGLISH
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
• Checkcircuitbreakerandresetifnecessary.
• Makesurepowerswitchatheating&coolingsystemison.
• Makesurefurnacedoorisclosedsecurely.
• Ifthermostatisbatterypowered,makesurefreshAAalkaline
batteries are correctly installed (see page 17).
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 settings
Follow these steps to restore default 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.