Honeywell T7200 Owner's Manual page 26

Single Zone Air Conditioning System - A packaged
system that includes heating, cooling, and air
distribution equipment. It might also include an
economizer (see Economizer). These systems are
self-contained, often roof mounted, and condition
the air in a specific local area with its own thermo-
stat. Larger buildings may have 2 or more areas or
zones, each with its own air conditioning system
and thermostat.
Thermostat Cycle - The time necessary for the
heating or cooling equipment to come on, operate,
and turn and remain off until the next time it is
needed. Cycle time is controlled by the thermostat.
For example, mechanical cooling equipment might
turn on and then go off 4 times in an hour.
I f . . .
Setpoint or start times cannot
be charmed.
BATT displayed on LCD.
Heating/Cooling will not go
on or off.
No heating/cooling with no
display of time or temperature.
Display of 4 dashes (----) for
time.
Display of 2 dashes and a
degree symbol (--") for
temperature.
Unoccupied Temperature Setpoint - The heating
and cooling temperature settings used when the
room or building is scheduled to be unoccupied.
Unoccupied Start Time - The selected time at
which the air conditioned space is allowed to
become cooler/warmer to save energy. NOTE: can
be temporarily overridden by using the "&Hour
Override" key.
7-Day Program - Each day of the week (7 days)
may be individually scheduled for occupied or
unoccupied start times. This allows maximum
flexibility
Then
Keyboard is locked out. Contact your installer. See section titled
SECURITY AND OVERRIDES for details.
Battery weak or not installed. See section titled BATTERY ACCESS AND
REPLACEMENT for details.
Wait for the minimum operation time delay of 2 to 4 minutes. Recall
temperature setpoints and subbase system and fan switches (if available)
to verify correct settings.
Power to the thermostat has been lost. If battery backup is installed,
program will be maintained. If power to thermostat is out for more than 24
hours, contact your installer.
There is no program stored in thermostat. This will occur when power is
first applied to the thermostat, or when power was lost to the thermostat
while battery backup was either weak or not installed. Re-program the
thermostat.
Temperature sensor has failed, or is out of range. No heating/cooling will
be allowed to come on. Contact your installer.
for building scheduling.
5 1