Service Test; Control Configuration Checklist; Programming Operating Schedules - Carrier 48PG03-16 Controls, Start-Up, Operation, Service And Troubleshooting Instructions

Service Test

The Service Test function can be used to verify proper operation
of compressors, heating stages, indoor fan, outdoor fans, power
exhaust fans, economizer, and alarm relay. Use of Service Test is
recommended at initial
troubleshooting.

Control Configuration Checklist

Refer to checklist CL-1 for recording site specific unit control
configurations.

Programming Operating Schedules

The ComfortLink™ controls will accommodate up to eight
different schedules (Periods 1 through 8), and each schedule is
assigned to the desired days of the week. Each schedule includes
an occupied on and off time. As an example, to set an occupied
schedule for 7:30 AM to 10:30 PM for Monday through Friday,
the user would set days Monday through Friday to ON for
Period 1. Then the user would configure the Period 1 Occupied
From point to 07:30 and the Period 1 Occupied To point to
22:30. To create a different weekend schedule, the user would use
Period 2 and set days Saturday and Sunday to ON with the
desired Occupied On and Off times.
NOTE: By default, the time schedule periods are programmed
for 24 hours of occupied operation.
To create a schedule, perform the following procedure:
1. Scroll to the Configuration mode, and select CCN
CONFIGURATION (CCN). Scroll down to the Schedule
Number (Configuration→CCN→SCH.O→SCH.N). If
password protection has been enabled, the user will be
prompted to enter the password before any new data is
accepted. SCH.N has a range of 0 to 99. The default value
is 0. A value of 0 is always occupied, and the unit will
control to its occupied set points. A value of 1 means the
unit will follow a local schedule, and a value of 65 to 99
means it will follow a CCN schedule. Schedules 2-64 are
not used as the control only supports one internal/local
schedule. If one of the 2-64 schedules is configured, then
the control will force the number back to 1. Make sure the
value is set to 1 to use a local schedule.
2. Enter the Time Clock mode. Scroll down to the LOCAL
TIME SCHEDULE (SCH.L) sub-mode, and press
ENTER. Period 1 (Timeclock→SCH.L→PER.1) will be
displayed.
3. Scroll down to the MON.1 point. This point indicates if
schedule 1 applies to Monday. Use the ENTER command
to go into Edit mode, and use the or key to change the
display to YES or NO. Scroll down through the rest of the
days and apply schedule 1 where desired. The schedule
can also be applied to a holiday.
4. Configure the beginning of the occupied time period for
Period 1 (OCC.1). Press ENTER to go into Edit mode,
and the first two digits of the 00.00 will start flashing. Use
the or key to display the correct value for hours, in
24-hour (military) time. Press
5. ENTER and hour value is saved and the minutes digits
will start flashing. Use the same procedure to display and
save the desired minutes value.
6. Configure the unoccupied time for period 1 (UNC.1).
Press ENTER to go into Edit mode, and the first two
digits of the 00.00 will start flashing. Use the or key to
display the correct value for hours, in 24-hour (military)
time. Press
7. ENTER and hour value is saved and the minutes digits
will start flashing. Use the same procedure to display and
save the desired minutes value.
system start-up and during
8. The first schedule is now complete. If a second schedule is
needed, such as for weekends or holidays, scroll down and
repeat the entire
(Timeclock→SCH.L→PER.2). If additional schedules are
needed, repeat the process for as many as are needed.
Eight schedules are provided. See Table 85 for an example
of setting the schedule.
SERVICE TEST
The Service Test function can be used to verify proper operation
of compressors, heating stages, indoor fan, outdoor fans, power
exhaust fans, economizer, and alarm relay. Use of Service Test is
recommended at initial
troubleshooting. (See Table 86.)
Service Test mode has the following changes from normal
operation:
S Outdoor air temperature limits for cooling circuits,
economizer, and heating are ignored.
S Normal compressor timeguards and other staging
delays are reduced to 30 seconds or less.
S Circuit alerts are limited to 1 strike (versus 3) before
changing to alarm shut down state.
The status of ALM.N is ignored so all alerts and alarms
S
are broadcast on CCN.
S The words "SERVICE TEST" are inserted into every
alarm message.
Service test can only be turned ON/OFF at the unit display. Once
turned ON, other entries may be made with the display or through
CCN.
NOTE: Service Test mode may be password protected. Refer to
Basic Control Usage section for more information.
Depending on the unit model, factory-installed options, and
field-installed accessories, some of the Service Test functions may
not apply.
To turn Service Test on, change the value of TEST to ON. To
turn service test off, change the value of TEST to OFF.
The independent (INDP) submenu is used to change output
status for the economizer, power exhaust stages, and the alarm
relay. These independent outputs can operate simultaneously with
other Service Test modes. All outputs return to normal operation
when Service Test is turned off. When the economizer is using
the factory default
(Configuration→ECON→E.CTL is 1 or 2) then the Economizer
Calibration feature may be used to automatically check and reset
the economizer actuator range of motion.
The fans (FANS) submenu is used to change output status for the
indoor fan and outdoor fan stages.
The cooling (COOL) submenu is used to change output status for
the individual compressors. Compressor starts are staggered by
15 seconds. The fans (FANS) and heating (HEAT) service test
outputs are reset to OFF for the cooling service test.
fans and outdoor fans are controlled normally to maintain proper
unit operation. All normal cooling alarms and alerts are
functional.
When charging unit, all outdoor fans may be forced on in cooling
service test modes by setting the Outdoor Fan Override (OF.OV)
to on.
55
procedure for period
system start up and during
Digital Control
Indoor
2
Type