Honeywell RTH6350 Series - Troubleshooting difficulties; Display is blank; Temperature settings do not change

RTH6350/RTH6450/RET93E0/RET95E0 Series
21 69-2415ES—05
About your new thermostatIn 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 15).
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.