resideo RTH221B1047 Manuel Du Propriétaire page 15

Troubleshooting
If you have difficulty with your thermostat, please try the following suggestions.
Most problems can be corrected quickly and easily.
Display is
blank
Heating
or cooling
system does
not respond
Temperature
settings do
not change
"Cool On" or
"Heat On" is
flashing
"Heat On" is
not displayed
"Cool On" is
not displayed
For assistance with this product, please visit resideo.com or call Resideo
Customer Care toll-free at 1-800-468-1502.
Check circuit breaker and reset if necessary.
•
Make sure power switch at heating & cooling system is on.
•
Make sure furnace door is closed securely.
•
Make sure fresh AAA alkaline batteries are correctly
•
installed.
Set system switch to Heat. Make sure the temperature is
•
set higher than the Inside temperature.
Set system switch to Cool. Make sure the temperature is
•
set lower than the Inside temperature.
Wait 5 minutes for the system to respond.
•
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).
•
Compressor protection feature is engaged. Wait 5 minutes
•
for the system to restart safely, without damage to the
compressor.
Set the System switch to Heat, and set the temperature
•
level above the current room temperature.
Set the System switch to Cool, and set the temperature
•
level below the current room temperature.
15