15
Static Press:
S
Inches of water. Displays calculated static pressure that
the furnace is currently experiencing.
S
If static pressure cannot be accurately calculated, the dis-
play will read UNKNOWN. When this is seen, the sys-
tem is adjusting to high static pressure by cutting back
blower RPM.
Lockout Timer:
S
Seconds
If a lockout timer is active, this will show the current time value.
See furnace manual for details on lockout timers.
Service -- Fan Coil Status
Electric Heat:
S
OFF, LOW, MED, HIGH
Displays stages of electric heat that the fan coil is currently
delivering.
Airflow CFM:
S
(fan coil model number dependent)
Cubic Feet per Minute of air the User Interface is currently
requesting.
Leaving Air Temp:
This sensor is NOT required
. However, if LAT sensor is
connected to the Damper Control Module, the sensor will read
leaving air temperature of the fan coil. The temperature
information is for display purposes only. The system does not react
to this temperature reading.
Indoor Coil Temp:
This sensor is NOT required.
However, if HPT sensor is
connected to the Damper Control Module, the sensor will read
temperature at that location (i.e. if placed down stream from
evaporator coil, and before electric heat, will read coil leaving air
temperature). The temperature information is for display purposes
only. The system does not react to this temperature reading.
Blower RPM:
S
Actual blower motor RPM value
Static Press:
S
Inches of water. Displays the calculated static pressure
the fan coil is currently experiencing.
S
If static pressure cannot be accurately calculated, the dis-
play will read UNKNOWN. When this is seen, the sys-
tem is adjusting to high static pressure by cutting back
blower RPM.
Service -- Heat Pump / AC Status
Stage: (Heat / Cool)
S
OFF, LOW, HIGH
Displays stage of heating or cooling that the Heat Pump/AC is
delivering.
Defrost:
S
NO, YES
Displays status of defrost mode if heat pump.
Airflow CFM:
S
Airflow User Interface is requesting from blower.
Leaving Air Temp:
This sensor is NOT required
. However, if LAT sensor is
connected to the Damper Control Module, sensor will read leaving
air temperature of the indoor unit. The temperature information is
for display purposes only. The system does not react to this
temperature reading.
Outdoor Coil Temp:
S
_
F or
_
C (default =
_
F)
Temperature of the outdoor unit coil (only available on
communicating outdoor units).
Blower RPM:
S
Actual RPM feedback from indoor motor.
Static Press:
S
Calculated static pressure of indoor unit.
S
If static pressure cannot be accurately calculated, the dis-
play will read UNKNOWN. When this is seen, the sys-
tem is adjusting to high static pressure by cutting back
blower RPM.
Service -- Zoning Status
Zone Status:
This screen will show each zone in the system with the
corresponding damper position (POS), and CFM being delivered
to each zone. Damper position range is from 0 to 15 (0 = closed, 15
= open).
Service -- Last 10 System Events
LAST 10 EVENTS
LOW PRESSURE
3/2/05
2:35 PM
< BACK
MORE >
HP
3 EVENTS:
225 EVENTS _
ACTIVE
FN 2/28/05 6:10 PM
41-BLOWER MOTOR FAULT
F
SWITCH OPEN
F=FAULT
A07032
Fig. 35 -- Last 10 System Events
This screen will show last 10 events that occurred throughout the
system. Each entry has the time and date incident recorded. Service
technician should enter current date in “
TODAY’S DATE
”menu
section BEFORE checking and logging the last 10 system events.
These events are stored in the memory of the User Interface and are
resettable in the Thermostat Setup screen under the Reset Factory
Default selection.
Each entry has a two--letter acronym preceding the event name to
identify which piece of equipment generated the event. This event
history can be cleared under Thermostat Setup, Reset Factory
Defaults.
HP = Heat Pump
AC = Air Conditioner
FN = Furnace
FC = Fan Coil
ZN1 = Zone Board 1
ZN2 = Zone Board 2
SPP = Packaged product
SAM = System Access Module
Service -- Run / Fault History
This information is stored in the equipment circuit boards (if
communicating) and displayed on the User Interface. The indoor
unit and outdoor unit (if communicating) have the following
histories:
NOTE
: For Critical Fault Screens, see Troubleshooting section in
this document.
Resettable Faults:
S
Fault counters for each piece of equipment that can be
reset.
Cycle Counters:
S
Number of heat/cool/power cycles the unit has per-
formed.
BBU
IZ
01
--
B
