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Defrost operation is fully automatic but can be
manually controlled.
- Defrost cycles are fully controlled by the integrated
microprocessor.
- During the defrost cycle, the evaporator fan shuts
down. The condenser fan is controlled by the
microprocessor.
- Defrost cycle termination is controlled by a timer or
defrost temperature sensor(DTS)..
- During the defrost cycle, the cab command display
indicates "d F".
Heating - For frozen unit with heating function
option
Heating is provided by hot gas system.
The evaporator fan operates, the condenser fan is
controlled by the microprocessor
.
6.2.1 To start the unit
1. Start the vehicle engine.
2. Start the unit by pressing the
key.
Start-up is time-delayed for 50 seconds.
3. The digital display of the cab control displays the
box temperature.
4. Check the temperature setpoint is correct by
pressing the
key. The setpoint temperature is
highlighted on the digital display.
5. Enter a new setpoint if necessary (See To change
setpoint temperature– paragraph 6.4)
In the event of difficulty on start-up, check that:
- The main road fuse has not blown. If it is ok, contact
your Carrier Service centre.
- The temperature selected by the cab control has not
been affected.
6.2.2 To stop the unit
- For a short stop (ex. delivery): switch off by the
vehicle ignition key.
- For a long stop: press the
key in the cab
command.
6.2.3 To change setpoint temperature
Important
If, when settings are adjusted, no key is activated
within 5 sec. the system reverts to displaying the
box temperature. All changes made are recorded.
If the cab command is built into the vehicle control
panel, the command unit must be located as far as
possible
from
the
heating
ducts.
Maximum
temperature of exposure : 85°C.
1. Press the
key to display setpoint
temperature.
2. Press the
or
key to change the
setpoint.
3. Press the
key to return to box temperature
display.
6.2.4 To change defrost parameters
Important
If, when settings are adjusted, no key is activated
within 5 seconds, the unit will be turned off
automatically. All changes made are recorded.
1. Press the
key to shut-down the unit.
2. Press
simultaneously
the
and
keys during 5 seconds to display last selected defrost
interval.
3. Press the
or
key to change the defrost
time:
5 to 45 min :increase or decrease time (5, 10, 15, 20,
25, 30 and 45) (default value 10 min)
4. Press the
key to display defrost interval:
0: inhibit defrost function.
1 h, 1.5h, 2 h, 2.5h, 3h, 4h, 5h and 6 h (default value
2h)
5. Press the
key to return to turn off the unit.
6.2.5 To display other data (alarms,
software version, operation time, box T
º
)
1. Press the
key during 5 seconds to enable
access to malfunction codes (see “Fault alarm
display”– paragraph 6.8).
2. Press
or
key to display alarms.
3. Press the
key to display controller
software version.
4. Press the
key to display cab command
software version.
