21
Display Module Usage
SCROLLING MARQUEE DISPLAY — This device is the
keypad interface used for accessing unit information, reading
sensor values, and testing the unit. See Fig. 16. The scrolling
marquee display is a 4-key, 4-character, 16-segment LED
(light-emitting diode) display. Eleven mode LEDs are located
on the display as well as an Alarm Status LED. See Appendix
A—Display Tables on page 176 for further details.
The scrolling marquee display module provides the user in-
terface to the ComfortLink control system. The display has up
and down arrow keys, an key, and an key.
These keys are used to navigate through the different levels of
the display structure. See Appendix A—Display Tables on
page 176. Press the key until the display is blank to
move through the top 11 mode levels indicated by LEDs on the
left side of the display.
Pressing the and keys simultaneously
will scroll a clear language text description across the display
indicating the full meaning of each display acronym. Clear lan-
guage descriptions will be displayed in the language of choice
(see page 22). Pressing the and keys
when the display is blank (Mode LED level) will return the
scrolling marquee display to its default menu of rotating dis-
play items, found under Run Status
o
VIEW. In addition, the
password will be disabled, requiring that it be entered again be-
fore changes can be made to password protected items. After a
period of time with no key activity, the scrolling marquee will
display its default menu of rotating display items found under
Run Status
o
VIEW.
When a specific item is located, the display will flash show-
ing the operator, the item, the item value and then the item units
(if any). Press the key to stop the display at the item
value. Press the key again so that the item value
flashes. Use the arrow keys to change the value or state of an
item and press the key to accept it. Press the
key and the item, value, or units display will re-
sume. Repeat the process as required for other items.
NOTE: If a value has been forced, the lower right “.” will be
flashing.
ACCESSORY NAVIGATOR™ DISPLAY MODULE —
The Navigator module (available only as a field-installed
accessory) provides a mobile user interface to the ComfortLink
control system. The display is a hand-held module with a
4-line by 40-character backlit LCD (liquid crystal diode)
screen. Four keys control the display menus, which provide
clear language descriptions of all menu items, operating
modes, configuration points, and alarm diagnostics. A coiled
extension cord capable of extending to 12 ft (5.6 m) allows the
display to be moved around the condensing unit. Magnets
attached to the back of the display hold the display module to
any sheet metal panel to allow hands-free operation. The dis-
play module has a NEMA (National Electrical Manufacturers
Association) 4x housing suitable for use in outdoor environ-
ments, and features a backlight and contrast adjustment for
easy viewing in bright sunlight or night conditions. The display
module also has raised surface buttons with positive tactile
response.
The Navigator display has up and down arrow keys, an
key, and an key. These keys are used to
navigate through the different levels of the display structure.
Press the key until ‘Select a Menu Item’ is dis-
played to move through the top 11 mode levels indicated by
LEDs on the left side of the display. See Fig. 17.
Once within a Mode or sub-mode, a “>” indicates the cur-
rently selected item on the display screen. Pressing the
and keys simultaneously will put the Nav-
igator module into expanded text mode where the full meaning
of all sub-modes, items and their values can be displayed. Press
the key to exit out of the expanded text mode. Press-
ing the and keys when the display says
“Select Menu Item” (Mode LED level) will return the Navigator
module to its default menu of rotating display items (those items
in Run Status
o
VIEW). In addition, the password will be dis-
abled, requiring that it be entered again before changes can be
made to password protected items. After a period of time with
no key activity, the Navigator will display its default menu of ro-
tating display items found under Run Status
o
VIEW.
When a specific item is located, the item name appears on the
left of the display, the value will appear near the middle of the
display and the units (if any) will appear on the far right of the
display. Press the key at a changeable item and the val-
ue will begin to flash. Use the up and down arrow keys to change
the value, and confirm the value by pressing the key.
Changing item values or testing outputs is accomplished in
the same manner. Locate and display the desired item. Press
so that the item value flashes. Use the arrow keys to
change the value or state and press the key to accept
Run Status
Service Test
Temperature
Pressures
Setpoints
Inputs
Outputs
Configuration
Time Clock
Operating Modes
Alarms
Alarm Status
ENTER
MODE
ESCAPE
Fig. 16 — Scrolling Marquee Display
Run Status
Service Test
Temperatures
Pressures
Setpoints
Inputs
Outputs
Configuration
Time Clock
Operating Modes
Alarms
ENTER
ESC
MODE
Alarm Status
Comfort
Link
RAT
64.3
°F
R
ETU
R
N AIR
T
EMPER
AT UR E
Fig. 17 — Accessory Navigator Display Module
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