Operating Instructions
38
The display briefly shows OFF (Figure 30) and
then goes blank. To start the unit again, press the
ON Key.
Figure 30: Display Shows OFF
The Standard Display
The Standard Display is the default display that
appears if no other display function is selected.
The Standard Display shows the box temperature
and setpoint. The box temperature is that
measured by the controlling sensor, usually the
return air sensor. The box temperature in Figure
31 is 35.8 F (2.1 C) with a 35 F (1.7 C) setpoint.
Figure 31: Standard Display
The down-pointing arrow at the left
side of the display shows the unit is
cooling. If the arrow were pointing
upward the unit would be heating.
The unit is running in Cycle Sentry
Mode as shown by the Cycle Sentry
Icon in the upper right corner of the
display. If the Cycle Sentry icon is not
present, the unit would be running in
Continuous Mode.
The USB Icon in the upper left corner
of the display will appear when a USB
Flash Drive is connected to the Flash
Drive Only USB Port on the Unit
Control Panel or a PC computer is
connected to the PC Only USB Port
inside the control box.
Pressing the left soft key allows the user to change
the SETPOINT, and pressing the right soft key
accesses the MAIN MENU. The other two soft
keys access the GAUGES menu and the
SENSORS menu.
NOTE: The functions of the GAUGES and
SENSORS soft keys may be re-assigned to better
suit customer requirements. The GAUGES and
SENSORS functions are always available from
the Maintenance Menu.
The TemperatureWatch Display
The TemperatureWatch Display appears 2 ½
minutes after the Standard Display appears so
long as there is no key activity and no check,
prevent or shutdown alarms are present. The
TemperatureWatch Display will remain on until
any key is pressed or a check, prevent or
shutdown alarm occurs.
The TemperatureWatch Display shows the box
temperature and setpoint. The large numbers
allow unit conditions to be checked from a
distance. The box temperature is that measured by
the controlling sensor, usually the return air
sensor. The box temperature in Figure 32 is 35.8 F
(2.1 C) with a 35 F (1.7 C) setpoint. The Cycle
Sentry icon in the upper right corner of the display
shows that the unit is operating in Cycle Sentry
mode. If the Cycle Sentry icon is not present, the
unit is running in Continuous Mode. The
down-pointing arrow indicates that the unit is
cooling. Pressing any soft key returns the display
to the Standard Display.
Figure 32: TemperatureWatch Display
If an alarm condition (other than a log alarm) is
present, the TemperatureWatch Display will not
appear. If an alarm condition occurs while the
TemperatureWatch Display is present the display
will return to the Standard Display to indicate that
an alarm condition has occurred.
OFF
ON
OFF
ON
OFF
MENU
35
°F
35
SET
SENSORS
GAUGES
POINT
.8
MENU
35
°F
35
TEMPERATURE
SETPOINT
.8
ON
OFF
