Carrier 33CS420-01 Owner's Manual page 33

Over,cling the Daily Schedule
The OVERRIDE button may be used to interrupt the normal time
schedule programming of the thermostat. Override may only be used
when the thermostat is running the time schedule, in Program On
mode.
Unoccupied Operation - During programmed, unoccupied
periods, pressing the OVERRIDE button will temporarily
force the thermostat into Occupied 1 comfort settings for 30
minutes. The remaining Override time will alternate with the
clock (refer to the second display below). The Override timer
can be set up to a maximum of four (4:00) hours, in increments
of 30 minutes. If the timer has been set for the maximum time,
the next press of the OVERRIDE button will reset the timer,
returning the thermostat to the correct time period program for
the day.
Occupied Operation - During programmed, occupied periods, a
press of the OVERRIDE button will force the thermostat into an
unoccupied period for the remainder of the day. During this
forced unoccupied period the OVERRIDE button will operate as
described above.
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