16
Run Times:
S
Lifetime hours of operation in heating, cooling, and how
long the unit has been powered.
Service -- Today’s Date
This menu item allows the installer to enter the current date. It is
used for time/date stamping of system faults. This should be
entered every time prior to viewing “LAST 10 SYSTEM
EVENTS” section.
Service -- Model / Serial Numbers
This menu item allows the installer to view the model number and
serial number (if available) of all communicating pieces of
equipment in the system. This information resides in the original
circuit board from the factory. If a circuit board has been replaced,
the model and serial number will no longer be displayed.
Service -- Service Phone Number
This menu item allows the installer to enter a name and phone
number that the homeowner can call for future service of the
system. This name and phone number will appear to the
homeowner whenever a service reminder pop--up message is
displayed (i.e. Change Filter, etc.)
To edit:
S
Use Temp +/-- button to move cursor left and right.
S
Use Time +/-- button to select numbers and letters.
S
Use Scroll button to move up and down between NAME
and NUMBER.
OPERATIONAL INFORMATION
Zone Selection
S
Press top left ZONE button to select zones.
Continuous Fan Operation
Pressing FAN button will scroll through the following:
S
AUTO = No fan operation except during equipment op-
eration.
S
LOW = Approximately 50% of High Speed operation.
S
MED = Half way between High and Low speed opera-
tion.
S
HIGH = Highest of either High Heating or High Cooling
CFM.
Continuous fan operation is programmable. The programming
option must be enabled in the Thermostat Setup. See the
Homeowner’s Manual for detailed instructions on programming
the fan.
Five--Minute Compressor Timeguard
This timer prevents compressor from starting unless it has been off
for at least 5 minutes. It can be defeated by simultaneously pressing
the Fan and Temp + buttons.
Emergency Heat (for heat pump applications)
To activate Emergency Heat, you must press and hold the HEAT
button for 3 seconds to activate. Repeat to deactivate.
Heat Source Selection (Hybrid or Hydronic Heat)
If user wishes to override normal operation in Hybrid Heat or
Hydronic Heat applications, press and hold the heat button for 3
seconds to select desired heat source.
Keypad Lockout
Keypad can be locked by pressing “Fan” and “Humidity/Oat”
buttons at the same time for 3 seconds. When keys are locked, a
lock symbol will appear in the upper left corner of screen. Follow
same procedure to unlock keypad.
Heat and Cool LED
The Heat and Cool LEDs will pulsate during actual equipment
operation. This can be defeated in the Advanced Setup Screens.
Equipment Cycle Timer (adjustable 4--6 cycles per
hour)
This timer prevents the start of a heating or cooling cycle until 15
(or 10) minutes after the last start of the same cycle. Its function is
to assure that the equipment is not cycled more than the selected
times per hour. This timer is adjustable from 4 to 6 cycles per hour.
This timer is defeated for one cycle when the desired temperature is
manually changed. It can also be defeated for one cycle by
simultaneously pressing the Fan and Temp + buttons.
Staging Timer
In multistage heating or cooling, this timer prevents any higher
stage from turning on until the preceding stage has been on for 10
minutes.
In Hybrid Heat, the staging timer is 15 minutes between heat pump
and gas furnace operation. A demand of 5
_
F / 2.8
_
C or more will
override the staging timer and allow higher stages to energize.
Three--Minute Minimum On Time
In normal operation, when a stage turns on, it will remain on for a
minimum of three minutes. If the setpoint is changed, this timer is
automatically cancelled, allowing the equipment to turn off
immediately when the demand is removed.
Heat/Cool Setpoints (Desired Temperatures)
A minimum difference of 2
_
F / 1.1
_
C (default) is enforced
between heating and cooling desired temperatures. This is done by
allowing one setting to “push” the other to maintain this difference.
This difference is adjustable via the Install/Service menu under
Thermostat Setup.
Temperature Display
The actual temperature displayed is always rounded toward the
setpoint. This is because the system is operating and measuring the
temperature in sixteenths of a degree, but displaying in whole
numbers. The system may be turned off and on within .5
_
F / .3
_
C
of setpoint, but the display may not change. This is by design and
does not indicate a problem with the control.
Auto Changeover
When Auto mode is enabled (factory default) a change from heat
to cool (or vice versa) will not occur until an opposite mode
demand has existed for 30 minutes. If the setpoint is changed, the
30--minute requirement is defeated. This Auto Changeover time is
adjustable via the Install/Service menu under Thermostat Setup.
Range = 5 -- 120 min.
Smart Recovery
With Smart Recovery selected (factory default), transition out of
setback begins 1.5 hours before selected recovery time and
gradually adjusts room temperature so desired temperature will be
achieved at selected recovery time. It operates in both heating and
cooling. This only applies to programmable operation.
For example: Set back temperature in heating is 64
_
F. Smart
Recovery setpoint is 70
_
F at 7:00 a.m. At 5:30 a.m., the control
calculates the required temperature recovery rate (recovery temp --
set back temp or current temp if greater) / 90 minutes. If the current
temp at 5:30 = 66
_
F, the recovery rate = (70 -- 66)
_
F/90 minutes =
0.04
_
per minute. In order to achieve setpoint, the control ramps up
the setpoint 0.04
_
F / minute from 5:30 a.m. until 7:00 a.m.
NOTE
: Temperatures should not be set back so far that the
equipment cannot recover in 90 minutes.
Media Filter
If
MEDIA
or
MEDIA+EAC
is installed in the indoor unit, the
system will perform a static pressure check of the system every 24
hours at 1:00 p.m. to monitor filter accumulation (TrueSense
t
Dirty Filter Detection) or whenever power is applied to the system
or the system is transitioned from Off to Cool or Heat modes. The
blower will run at a medium airflow for one minute.
BBU
IZ
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--
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