Checkout = HEAT PUMP HEATING
•
HIGH HEAT RUNTIME: 5 min.
•
LOW HEAT RUNTIME: 5 min.
•
DEFROST: NO
The heat pump heating mode can be exercised with this menu
option. With a 2-speed heat pump, a low heat runtime and a high
heat runtime are independently selectable to exercise. A defrost
cycle is also selectable. Default time = Fixed 5 min. minimum,
range = 5 - 120 min.
Checkout = HEAT PUMP COOLING OR AC COOLING
•
HIGH COOL RUNTIME: 5 min.
•
LOW COOL RUNTIME: 5 min.
The heat pump cooling mode (or AC cooling mode) can be
exercised with this menu option. With a 2-speed heat pump or AC
unit, a low cool runtime and a high cool runtime are independently
selectable to exercise. The display will change to show the heat
pump or AC operating status. Default time = Fixed 5 min.
minimum, range = 5 - 120 min.
Checkout = HUMIDIFIER
•
ON
•
OFF
The humidifier can be exercised On and Off with this menu option.
Checkout = VENTILATOR
The ventilator can be exercised through all of its operating speeds
with this menu option.
SERVICE MENUS
The Service Info menu will only show the equipment installed in
the system. Below is a sample using a furnace and a dual fuel heat
pump. A sample service menu is shown in Fig. 25.
Service = FURNACE STATUS
The Status screens will show all of the current operating param-
eters of each installed piece of equipment.
HEAT STAGE:
•
OFF, LOW, HIGH
Displays stage of heat that the furnace is currently delivering.
AIRFLOW CFM:
•
(furnace model dependent)
Cubic Feet per Minute of air the blower is currently delivering.
INDUCER RPM (90% furnaces only):
•
Inducer motor RPM value.
BLOWER RPM:
•
Blower motor RPM value.
STATIC PRESS:
•
Inches of water. Displays static pressure that the furnace is
currently experiencing.
LOCKOUT TIMER:
•
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
ELECTRIC HEAT STATUS:
•
OFF, LOW, MED, HIGH
Displays stages of electric heat that the fan coil is currently
delivering.
AIRFLOW CFM:
•
(fan coil model dependent)
Cubic Feet per Minute of air the blower is currently delivering.
BLOWER RPM:
•
Blower motor RPM value
STATIC PRESS:
•
Inches of water
Displays static pressure that the fan coil is currently experiencing.
Service = HEAT PUMP / AC STATUS
STAGE: (HEAT / COOL):
•
OFF, LOW, HIGH
Displays stage of heating or cooling that the heat pump/AC is
delivering.
DEFROST:
•
NO, YES
Displays status of defrost mode if heat pump.
AIRFLOW CFM:
•
Indoor unit cfm measurement.
BLOWER RPM:
•
RPM feedback from indoor motor.
COIL TEMP:
•
Degrees F.
Temperature of the outdoor unit coil (only available on 2-speed
communicating outdoor units).
STATIC PRESS:
•
Static pressure of indoor unit.
Service = LAST 10 SYSTEM FAULTS
This screen will show last 10 faults that occurred throughout the
system. Each fault has the time and date of incident recorded.
Service technician should enter current date in
″
TODAY’S
DATE
″
menu section before checking and logging the last 10
system faults. Each fault has a two-letter acronym preceding the
fault name to identify which piece of equipment generated the
fault.
•
HP = heat pump
•
AC = air conditioner
•
FN = furnace
•
FC = fan coil.
Service = RUN / FAULT HISTORY
The indoor unit and outdoor unit (if communicating) has the
following histories:
NOTE:
For Critical Fault Screens, see Trouble Shooting section
in this document.
Resettable Faults:
•
Fault counters for each piece of equipment that can be reset.
Cycle Counters:
•
Number of heat/cool/power cycles the unit has performed.
Fig. 25 — SERVICE INFO MENUS
A03205
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
—10—
