155
JOHNSON CONTROLS
FORM 201.21-NM4 (616)
155
JOHNSON CONTROLS
6
CHILLER ELECTRONIC COMPONENTS (CON'T)
Pressing the
◄
(LEFT ARROW) key moves the
opposite direction. The arrow keys also allow fast
scrolling through data under keys such as HISTORY
by enabling the operator to move between subgroups
of data such as Unit, System, and VSD data.
Keypad Data Entry Mode
For numeric programmable items, the data entry mode is
entered by pressing any of the number keys, the decimal
point key, or the +/- key. When the data entry mode is
entered, the data from the key press will be entered and
the cursor will appear under the position where the data
is being entered.
For non-numeric programmable items, data entry mode
is entered by pressing the
◄
or
►
(ARROW) keys.
When the data entry mode is entered, the cursor will
appear under the first position of the non-numeric string.
The programmable choice may be changed by pressing
the
◄
or
►
(ARROW) keys.
To exit the data entry mode and store the programmed
value, the √ (ENTER) key must be pressed. When the
√ (ENTER) key is pressed, the cursor will disappear.
The data entry mode may also be exited by pressing
the X (CANCEL) key. The programmed data will be
returned to its original value when the X (CANCEL)
key is pressed.
When the data entry mode is exited, the cursor will
disappear. If any other key is pressed while in the
Data Entry Mode, the following display will appear
for 2 seconds indicating the user must choose between
accepting or canceling the change:
XXXXXXXXXXX PRESS
√√
TO ACCEPT VALUE OR
X TO CANCEL DATA ENTRY
If the √ (ENTER) key was pressed from the data en
-
try mode and the numeric value entered was out of
range, the following message will appear for 2 seconds
followed by the original data display.
XXXXXXXXXXX OUT OF RANGE – TRY AGAIN!
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
DISPLAY
The 80 character (2 lines of 40 characters per line)
display is a Liquid Crystal Display (LCD) used for
displaying unit parameters, system parameters, and
operator messages. The display has an LED backlight
background for night viewing and is viewable in direct
sunlight.
LD10605
UNIT
SWITCH
