Unit installation

42 OMRCPMICRO
Keypad/Display
Menu structure (general description)
Figure 14, Keypad/display
The information stored in the MicroTech
controller can be accessed through the keypad
using a tree-like structure. This tree structure is
divided into Categories, Menus and Menu
Items. There are three Categories which make
up the tree structure: STATUS, CONTROL, and
ALARM. Each category is divided into Menus
and each Menu into Menu Items. The three
categories are described below:
Status category—Menus and menu items in
this category provide information on the
MicroTech and unit operating conditions. The
entries under each menu item in this category
provide information only and are not changeable through the MicroTech keypad. Menus 1 through 12 are
Status Menus.
Control category—Menus and menu items in this category provide for the input of all the unit control
parameters. These include cooling and heating control, compressor control and condenser fan control
parameters as well as time schedules and alarm limits. The entries under these menu items are changeable
through the MicroTech keypad. Menu Items 13 through 23 are Control Menus.
Alarm category—Menu and menu items in this category provide information regarding current and previous
alarm conditions. Menus 23 through 27 are Alarm Menus.
Display format
The information stored in the MicroTech controller tree structure can be viewed (one menu and menu item at a
time) through a two line by sixteen character LCD display. The current MENU is shown on the top line and the
current MENU ITEM is shown on the bottom line of the display.
MicroTech menu structure
A complete listing of the information stored in the MicroTech controller tree structure is shown in Table 7,
Table 8, and Table 9. These tables show the menu numbers and names along with their corresponding menu
items and menu item entries as they appear on the MicroTech display. The # symbol is used where the
controller would normally display a numerical value. Also included in this figure is the corresponding switch
menu for each menu item. (The switch function is described in the section, Keypad Key Functions).
Notes:
1. Status category—Where more than one menu item entry is listed under a menu item, the list includes all
the entries which can appear in the display for the particular item. The entry that shows in the display
depends on the operating status of the unit.
2. Control category—Where more than one menu item entry is listed under a menu item, the list includes all
the choices from which the user can select. The selected entry appears in the display.
3. Alarm category—The entries listed include all the possible alarm messages. The display will show the
current and previous alarm conditions for each circuit.