Source 1 S1-TBSU22HN Owner's Manual And Installation Instructions page 11

Get to Know Your Thermostat
Display Features
10 Am
18:88
Pm
Setup Step
188
Fan On
Outdoor
188
Desired Set Temperature
Indicates desired room temperature(s). Also displays the highest
and lowest temperatures for the day.
Occupied & Unoccupied icons
Indicates the program number: Occupied 1,2,3 or Unoccupied.
Override icon
Indicates the program is currently being overridden for up to 4
hours.
10
Setup Step icon
Indicates the step number when the thermostat is in the
setup mode.
11
2nd and 3rd Stage icons
Indicates what stage of cooling or heating is currently
energized.
icon
12
Indicates the keypad has been locked.
11
Program ONOFF
2nd3rd
188
Stage
Unoccupied123
H
C L S
OO ET
Override
A H S
UX EAT ET
88
Lo
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