Carrier Weathermaster 48P2030-100, Управление, пуск, эксплуатация, обслуживание и устранение неисправностей.

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• Occupancy or start/stop sequences based on third party
signals
• Alarm status and history and run time data
• Management of a complete unit service test sequence
• Economizer operation and Fault Detection and Diagnos-
tics (FDD) per California Energy Commission (CEC)
Title 24-2013.
System diagnostics are enhanced by the use of sensors for air
temperatures, air pressures, and refrigerant pressures. Unit-
mounted actuators provide digital feedback data to the unit
control.
The
Comfort Link controller is fully communicating and cable-
ready for connection to the Carrier Comfort Network ® (CCN)
building management system. The control provides high-speed
communications for remote monitoring. Multiple 48/50P Se-
ries units can be linked together (and to other Comfort Link
controller equipped units) using a 3-wire communication bus.
The
Comfort Link control system is easy to access through the
use of a unit-mounted display module. A computer is not needed
to perform unit start-up. Access to control menus is simplified
by the ability to quickly select from 11 menus. A scrolling read-
out provides detailed explanations of control information. Only
four, large, easy-to-use buttons are required to maneuver through
the entire controls menu. The display readout is designed to be
visible even in bright sunlight.
For added service flexibility, an accessory hand-held Navigator™
module is also available. This portable device has an extended
communication cable that can be plugged into the unit’s commu-
nication network either at the main control box or at the opposite
end of the unit, at a remote modular plug. The Navigator display
provides the same menu structure, control access, and display data
as is available at the unit-mounted scrolling marquee display.
Scrolling Marquee
This device is the keypad interface used to access the control in-
formation, read sensor values, and test the unit. The scrolling
marquee is located in the main control box and is standard on all
units. The scrolling marquee display is a 4-key, 4-character, 16-
segment LED (light-emitting diode) display module. The display
also contains an Alarm Status LED. See Fig. 1. The display is
easy to operate using 4 buttons and a group of 11 LEDs that indi-
cate the following menu structures: Run Status, Service Test,
Temperatures, Pressures, Set points, Inputs, Outputs, Configura-
tion, Timeclock, Operating Modes, and Alarms.
Fig. 1 — Scrolling Marquee
Through the scrolling marquee, the user can access all of the in-
puts and outputs to check on their values and status, configure
operating parameters, and evaluate the current decision status for
operating modes. Because the 48/50P Series units are equipped
with suction pressure and discharge pressure transducers, the
scrolling marquee can also display refrigerant circuit pressures
typically obtained from service gages. The control also includes
an alarm history which can be accessed from the display. In ad-
dition, through the scrolling marquee, the user can access a built-
in test routine that can be used at start-up commissioning and to
diagnose operational problems with the unit.
Accessory Navigator™ Display
The accessory hand-held Navigator display can be used with
the 48/50P Series units. See Fig. 2. The Navigator display op-
erates in the same way as the scrolling marquee device. The
Navigator display is plugged into the RJ-11 jack in the main
control box on the COMM board. The Navigator display can
also be plugged into the RJ-11 jack located on the unit corner
post located at the economizer end of the unit.
Fig. 2 — Accessory Navigator Display
Operation
All units are shipped from the factory with the scrolling mar-
quee display, which is located in the main control box. See
Fig. 1. In addition, the Comfort Link controls also support the
use of the handheld Navigator™ display.
Both displays provide the user with an interface to the
Com-
fort Link control system. The displays have and arrow
keys, an key and an key. These keys are
used to navigate through the different levels of the display
structure. The Navigator and the scrolling marquee operate in
the same manner, except that the Navigator display has multi-
ple lines of display and the scrolling marquee has a single line.
All further discussions and examples in this document will be
based on the scrolling marquee display. See Table 2 for the
menu structure.
The four keys are used to navigate through the display structure,
which is organized in a tiered mode structure. See Table 2 for the
first two levels of the mode structure. If the buttons have not
been used for a period, the display will default to the AUTO
VIEW display category as shown under the RUN STATUS cate-
gory. To show the top-level display, press the
key un-
til a blank display is shown. Then use the and arrow
keys to scroll through the top-level categories. These are listed in
Appendix A and will be indicated on the scrolling marquee by
the LED next to each mode listed on the face of the display.
When a specific mode or sub-mode is located, push the
key to enter the mode. Depending on the mode, there
may be additional tiers. Continue to use the and keys
and the keys until the desired display item is found.
At any time, the user can move back a mode level by pressing
the
key. Once an item has been selected, the display
will flash showing the item, followed by the item value and
then the item units (if any).
Items in the Configuration and Service Test modes are pass-
word protected. The display will flash PASS and WORD when
required. Use the
and arrow keys to enter the four
digits of the password. The default password is 1111.
Run Status
Service Test
Temperature
Pressures
Setpoints
Inputs
Outputs
Configuration
Time Clock
Operating Modes
Alarms
Alarm Status
ENTER
MODE
ESCAPE
R
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S t
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S ervice
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Temper
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Pre
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S etpoin
t s
Inp
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Config
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Time Clo
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Oper
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ode
s Al
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s
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C
M O D
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Al a
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TIME
EWT
LWT
S ETP
1 2 . 5
8
5 4 . 6
F
4 4 . 1
F
4 4 . 0
F
N A V
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T O R
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ESCAPE ENTER
ESCAPE
ENTER
ENTER
ESCAPE
ENTER