Carrier TRANSICOLD VECTOR 8100, Operation & Service Manual, Page: 154 / 294

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00053 BOX TEMP OUT-OF-RANGE
• ACTIVATION:
Condition One : If the unit is running in Pulldown and the SAT is not greater than 1°F (0.56°C) below
the RAT or if the unit is running in Pull-Up and the SAT is not above the RAT, the configured action
(Alarm only after 30 minutes or Alarm and Shutdown after 45 minutes) will be activated.
NOTE
If the Out-Of-Range Alarm Functional Parameter is set to OFF, the following conditions will not trig-
ger an alarm or shutdown.
Condition Two : If the refrigerated compartment temperature has been within ± 2.7°F (± 1.5°C) for
perishable setpoints or + 2.7°F (± 1.5°C) for frozen of setpoint at least once since the unit was
started and is now further away from setpoint than the limit set in the Out-Of-Range Alarm Func-
tional Parameter [4°, 5°, or 7°F (2°, 3°, or 4°C)], the configured action (Alarm only after 30 minutes
or Alarm and Shutdown after 45 minutes) will be activated.
Condition Three : If a shutdown alarm occurs and the RAT is further away from setpoint than the limit
set in the Out-Of-Range Alarm Functional Parameter [4°, 5°, or 7°F (2°, 3°, or 4°C)], the configured
action (Alarm only after 30 minutes or Alarm and Shutdown after 45 minutes) will be activated regard-
less if the refrigerated compartment temperature has been in-range or not.
• UNIT CONTROL: If the microprocessor is not configured for shutdown, alarm only.
If the microprocessor is configured for shutdown the unit will shutdown and alarm.
• RESET CONDITION:
Condition 1 : Auto reset; If the unit is running in Pulldown and the SAT is greater than 1°F (0.56°C)
below the RAT or if the unit is running in Pull-Up and the SAT is greater than the RAT.
Condition 2 & 3 : Auto reset when the temperature is within ±2.7°F (±1.5°C) for perishable setpoints
or + 2.7°F (± 1.5°C) for frozen setpoint.
For Any Condition : alarm may be manually reset using the display mounted keys OR by turning the
unit off, then back on again.
NOTE: The 30 or 45 minute timer is reset and starts again whenever:
• The unit cycles off and restarts in Start-Stop.
• The unit goes into and comes out of Defrost.
NOTE: This alarm does not go into the Inactive alarm List when it becomes inactive or is cleared.
NOTE: This alarm will not be activated in Sleep Mode.
NOTE: For Condition Two, the temperature criteria for this alarm is reset, and the refrigerated compartment tem-
perature must again go In Range before this alarm can be activated if any of the following occur:
• Pretrip is started.
• Setpoint is changed.
• A door switch or remote switch is installed and configured as a door switch, and the switch is opened indi-
cating that the compartment door has been opened.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, clear the
alarm(s). (Refer to Note 1 in
Notes Section.) Operate the unit through the appropriate modes to see if any active
alarm occurs. Continue with the steps below as necessary.
CORRECTIVE ACTIONS:
1. Check Compartment Doors - Inspect all compartment doors. Must be closed, and not allowing any air
leakage.
2. Defrost Evaporator - Initiate manual defrost cycle. Must terminate automatically. Verify all ice cleared
from evaporator coil.
Alarm continued on next page...