Carrier 53DFS250-HW Operating Manual page 17

Key Lock
PARTIAL LOCKOUT 1
This mode locks out schedule and sys-
tem changes.
• User can change the temperature
setpoint and fan settings, but
cannot change schedule or system
settings.
• The temporary changes last until
next scheduled period. The screen
displays that time.
PARTIAL LOCKOUT 2
This mode locks out schedule, system,
and fan changes.
• User can change the temperature
setpoint, but cannot change
schedule, system, or fan settings.
• The temporary temperature change
lasts until next scheduled period.
The screen displays that time.
PARTIAL LOCKOUT 3
This mode locks out schedule, system,
fan, and temperature setpoint settings:
• Users cannot make changes to the
temperature setpoint or any schedule,
system, or fan settings.
• The only features available are
HOLIDAY and OVERRIDE.
15
53DFS250-HW Thermostat
69-2566EFS—05