Operating Instructions
46
Figure 63: Initiating a Manual Defrost Cycle
Terminating a Defrost Cycle
The defrost cycle terminates automatically when
the coil temperature is greater than or equal to
58 F (14 C) or the defrost timer expires. Defrost
can also be terminated by turning the unit off and
back on.
NOTE: If Rail Alternate is set YES the defrost
cycle terminates at 70 F (21 C) or if the defrost
timer expires.
Selecting Cycle Sentry or
Continuous Mode
When Cycle Sentry Mode is selected the unit will
start and stop automatically to maintain setpoint,
keep the engine warm and the battery charged.
When Continuous Mode is selected, the unit starts
automatically and runs continuously to maintain
setpoint and provide constant airflow.
IMPORTANT: Cycle Sentry or Continuous
Mode may not be selectable if OptiSet Plus is in
use.
See Figure 69 for an overview of the S
electing
Cycle Sentry or Continuous Mode
procedure.
If the unit is operating in Cycle Sentry Mode, the
Cycle Sentry Icon will be present in the upper
right corner of the display as shown below. If the
Cycle Sentry Icon (Figure 64) is not present the
unit is operating in Continuous Mode.
Figure 64: Cycle Sentry Icon
If allowed by OptiSet Plus, Cycle Sentry Mode or
Continuous Mode is selected by pressing the
Cycle Sentry/Continuous Key as shown (Figure
65).
Figure 65: Cycle Sentry/Continuous Key
NOTE: Cycle Sentry Mode or Continuous Mode
can also be selected using the Main Menu >
Mode Submenu.
If the unit is in Cycle Sentry Mode, pressing the
Cycle Sentry/Continuous Key changes the mode
from Cycle Sentry Mode to Continuous Mode.
The display confirms the change (Figure 66).
ON
OFF
MENU
35
°F
35
SET
SENSORS
GAUGES
POINT
.8
DEFROST STARTED
ON
OFF
35
MENU
SET
SENSORS
GAUGES
POINT
ON
OFF
ON
OFF
DEFROST NOT AVAILABLE
No
Yes
ON
OFF
MENU
35
°F
35
SET
SENSORS
GAUGES
POINT
.8
ON
OFF
MENU
35
°F
35
SET
SENSORS
GAUGES
POINT
.8
