STEP 4. Check Thermostat Operation
To prevent compressor and/or property damage, DO NOT operate the cooling
system if the outdoor temperature is below 55° F.
CAUTION
Once you have installed your new thermostat, you need to
check that the fan, cooling system, and heating system are all
operating properly.
If you are still in the INSTALLATION MENU, press the Exit key
to exit to the home screen.
If your system does not have a G terminal connection,
proceed to Heating System.

Check fan operation

Menu > Settings > Fan
1. Press the MENU button and select FAN ON in the thermostat
display. The blower should begin to operate. Place your hand by
a vent to confirm blower is running.
2. Select FAN AUTO to return to standard setting. The blower will
only cycle with call for cool or heat.

Check the cooling system

1. Press the Heating / Cooling Mode key one or more times to
select COOL.
2. Press the to adjust thermostat setting 1° below room
temperature. The blower should come on immediately on
high speed, followed by cold air circulation.
14