About your new thermostat
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 heating and cooling temperatures are set to acceptable ranges:
Temperature
settings do not
change
Follow these steps to restore default schedule settings (see page 10):
To restore
default schedule
settings
• Make sure fresh AA alkaline batteries are correctly installed
(see page 15).
• Heat: 40° to 90°F (4.5° to 32°C).
• Cool: 50° to 99°F (10° to 37°C).
1. Press SET CLOCK/DAY/SCHEDULE.
2. Press SET SCHEDULE.
3. Press DONE and NEXT at the same time for 4 seconds.
21
RTH6350/RTH6450 Series
69-2415ES—03