14
Checkout -- System Access Module (SAM)
See System Access Module Installation Instructions for full details.
SERVICE MENUS
The Service Info menu will only show the equipment installed in
the system. Below is a sample using a furnace and a heat pump
(Hybrid Heat). A sample service menu is shown in Fig. 32.
SERVICE INFO
FURNACE STATUS
HEAT PUMP STATUS
LAST 10 SYSTEM FAULTS
RUN/FAULT HISTORY
TODAY’S DATE
MODEL/SERIAL NUMBER
SERVICE PHONE NUMBER
BACK SELECT
A03205
Fig. 32 -- Service Info Menu
Service -- Furnace Status or Gas PAC Status
The Status screens will show all of the current operating parameters
of each installed piece of equipment.
NOTE
: To view a less detailed Equipment Status screen, press the
right side button. This will display equipment stage, fan status,
actual and target humidify settings.
Heat Stage:
S
OFF, LOW, HIGH
Displays stage of heat that the furnace is currently delivering.
Airflow CFM:
S
(furnace model dependent)
Cubic Feet per Minute of air the blower is currently delivering.
Inducer RPM (90% furnaces only):
S
Inducer motor RPM value.
Blower RPM:
S
Actual RPM feedback from indoor blower motor.
Static Press:
S
Inches of water. Displays the calculated static pressure that the
fan coil is currently experiencing.
S
If static pressure cannot be accurately calculated, the display will
read UNKNOWN. When this is seen, the system 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.
Blower RPM:
S
Actual blower motor RPM value
Static Press:
S
Inches of water. Displays the calculated static pressure that the
fan coil is currently experiencing.
S
If static pressure cannot be accurately calculated, the display will
read UNKNOWN. When this is seen, the system 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.
Outdoor Coil Temp:
S _
F or
_
C (default =
_
F)
Temperature of the outdoor unit coil (only available on 2--stage
communicating outdoor units).
Blower RPM:
S
Actual RPM feedback from indoor blower motor.
Static Press:
S
Inches of water. Displays the calculated static pressure that the
fan coil is currently experiencing.
S
If static pressure cannot be accurately calculated, the display will
read UNKNOWN. When this is seen, the system is adjusting to
high static pressure by cutting back blower RPM.
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. 33 -- 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.
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
SPP = Packaged product
SAM = System Access Module
Service -- Run / Fault History
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 performed.
UID
01
--
V
