In Case Of Difficulty - Honeywell RTH6350 Series Operating Manual

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.
RTH6350/RTH6450/RET93E0/RET95E0 Series
21 69-2415ES—05