Installer system test
To perform a System Test:
1 Press and hold CENTER and
approximately 3 seconds to enter advanced
menu.
to go to TEST. Press Select to enter
2 Use
System Test.
3 Use
to change between Heat, Cool, Fan, Em
Heat, or Ver (thermostat version information).
Press Select.
4 Press
to turn stages on one at a time, and
press
to turn them off.
5 Use the Home button to exit the System Test.
System test
Shaded areas below apply only to TH6320U/TH6220U or as otherwise noted.
0
1
Heat
2
3
0
Cool
1
2
0
Em Heat
1
0
Fan
1
buttons for
System status
All Off
Heat Stage 1 on
Heat Stage 2 also on
Heat Stage 3 also on
All Off
Cool Stage 1 on
Cool Stage 2 also on
All Off
Em Heat on
Fan Off
Fan On
10