Carrier 48LC Series Controls, Start-Up, Operation And Troubleshooting page 4

Fig. 2 — SystemVu Interface
SYSTEMVU INTERFACE OPERATION
Units are shipped from the factory with the SystemVu interface
FIOP, located in the main control box. (See Fig. 2.) In addition,
the interface has up and down arrow keys, BACK, ENTER,
MENU, and TEST keys. These keys are used to navigate
through the different levels of the menu structure. All discus-
sions and examples in this document will be based on the Sys-
temVu display except in the Navigator™ display section. See
the Accessory Navigator Display section for further details and
Table 2 for the Navigator menu structure and usage.
The six keys are used to navigate through the display structure,
which is organized in a tiered menu structure. If the buttons have
not been used for a period of time, the display will default to a
standby screen intended to provide a quick overall look at the
system. To show the top-level display, first press any key to turn
the display backlight on, and then press the MENU key. Then
use the up and down arrow keys to scroll through the top-level
menus. These are shown in Fig. 3 and listed in Appendix A.
Fig. 3 — SystemVu™ Main Menu Structures
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When a specific menu or submenu is located, push the ENTER
key to enter the menu. Depending on the menu, there may be ad-
ditional tiers. Continue to use the up and down keys and the EN-
TER key until the desired display item is found. At any time, the
user can move back a menu level by pressing the BACK key.
Once an item has been selected, the display will flash showing
the item, followed by the item value and then by the item units
(if any). Pressing the TEST button at any time will jump the dis-
play to the test menu. Pressing the MENU button any time will
jump the display to the main menu.
Items in the Configuration and Service Test menus are pass-
word protected. The display will prompt the enter password
screen when required. Use the ENTER, BACK, and arrow keys
to enter the four digits of the password. The default user pass-
word is 1111.
Pressing the BACK and ENTER keys simultaneously will
show an expanded text description screen on the display indi-
cating the full meaning of each display point. To put the screen
in standby, hold down the BACK key for 5 seconds.
Some points can be forced from the SystemVu interface. To
force a variable, follow the same process as editing a configu-
ration parameter. A forced variable, regardless where the force
has come from will be displayed with a lower case "f" follow-
ing its value. For example, if ECON CMD POSITION is
forced, the display shows "80%f", where the "f" is to signify a
force on the point. Remove the force by selecting the point that
is forced with the key ENTER and then pressing the up and
down arrow keys simultaneously. Pressing ENTER and BACK
on a forced item will display the expanded description for that
item including the force level that is currently applied. De-
pending on the type of unit (48LC or 50LC), factory-installed
options, and field-installed accessories, some of the items in
the various menus may not apply.