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3.5 SETPOINT ADJUSTMENT
1. Press the SET key to display the setpoint
temperature.
2. Press the - key to decrease the setpoint.
3. Press the + key to increase the setpoint.
4. Press the SET key to validate the setpoint
temperature and return to the display of box
temperature.
If no key is pressed within 5 seconds of adjusting settings, the system reverts to displaying the box
temperature. Only validated changes are recorded.
3.6 MANUAL DEFROST
1. Check that box temperature is 40°F (4.4°C)
or lower.
2. Press the Manual Defrost key to initiate man-
ual defrost.
3.7 CHANGING DEFROST PARAMETERS
1. Press the OFF key to shut down the unit.
2. Press simultaneously the Manual Defrost
key and ON key for 5 seconds to display the
last selected defrost interval.
3. Press the - key to decrease the setpoint.
4. Press the + key to increase the setpoint.
5. Press the SET key to validate the setpoint
temperature and return to the display of box
temperature.
If no key is pressed within 5 seconds of adjusting settings, the system reverts to displaying the box
temperature. Only validated changes are recorded.
3.8 ALARM DISPLAY
In the event of a malfunction, the unit will shut down and the Cab Command will display an error message or alarm
message. The message will remain displayed until the malfunction is corrected. A listing of the error messages and
alarm codes is provided in Table 3–1. There are three types of alarms:
• AXX: Active alarms that cannot be cleared until the malfunction can be corrected. The red LED is flashing
rapidly.
• PXX: Passive alarms that stay in memory until the technician clears them. The red LED is flashing slowly.
• Direct Display: These alarm messages are displayed instead of temperature read-out as soon as the mal-
function is detected, and remain displayed as long as the malfunction persists. The unit does not run until
the malfunction has disappeared or been corrected.
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