Honeywell RTH1100 series, Quick Installation Manual, Page: 20 / 48

Advanced Installation Guide
69-2446EF—01 18
WIRING
ASSIST
ANCE
TROUBLESHOOTING
Troubleshooting
Display is blank Make sure fresh AA alkaline •
batteries are correctly installed
(see page 9).
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). •
Fan does not
turn on when
heat is required
Check Heating Fan Control to •
make sure it is set to match
your heating equipment (see
page 8).
If you have difficulty with your thermostat, please try
the following suggestions. Most problems can be cor-
rected quickly and easily.