Zanotti FZ214, Руководство по установке

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8. Operation
8.1 Operation in road mode:
Check that the punctiform LED on the display is on, showing that the unit is on. Start the vehicle engine and
press the ON button for 3 seconds. Attention: when the vehicle is not in motion the refrigerating unit can not be
used in road mode. The operation and road icons light up.
To stop the refrigerating unit press the on/off button or stop the vehicle.
8.2. Operation in stand-by mode:
Check that supply voltage corresponds to the one shown in the data plate (tolerance: +/-10% on nominal
voltage), then insert the plug.
Press the ON button for 3 seconds: the operation and standby icons light up; the red display shows the cold
room temperature and the yellow display the set point. To stop the refrigerating unit press the on/off button.
8.3. Automatic operation:
After starting the unit operates automatically and it stops any time the cold room temperature reaches the
set point; it resumes operation when temperature reaches a value corresponding to set point + differential.
According to the model, the refrigerating unit can show different operating modes which give rise to the
activation of different icons:
- cold mode: activated icons - -
- hot mode: activated icons -
In addition to these icons the road or standby icon, or , will also be activated.
8.4. Defrost:
The defrost cycle is activated automatically at intervals, or manually by pressing the defrost button. During
this cycle the icons and light up.
In the operating mode with heat pump, evaporator and condenser exchange their functions; for this reason
the icons activating during defrost can also be and , depending on the defrost cycle involving the
evaporator or the condenser.
In the operating mode with heat pump the defrost cycle ends by time out.
8.5 Alarms and warnings
Low pressure switch alarm
When the low pressure switch trips, the unit stops: the alarm LED lights up and the label PRL is displayed.
Reset is automatic. If the number of interventions is higher than parameter LPn during the time set by parameter
LPd, the alarm PMI is produced. This alarm can only be reset by switching the unit off and on again.
High pressure switch alarm
When the high pressure switch trips, the unit stops: the alarm LED lights up and the label PRH is displayed.
Reset is automatic. If the number of interventions is higher than parameter HPn during the time set by parameter
HPd, the alarm PMS is produced. This alarm can only be reset by switching the unit off and on again.
Overload relay alarm
This alarm is only active when the unit operates in standby mode. When the relay or the thermistor trips,
the unit stops. The alarm LED lights up and the label F1t is displayed. Regulation is resumed after reset and a time
Htt. If the number of interventions is higher than parameter Htn during the time set by parameter Htd, the alarm
FTB is produced. This alarm can only be reset by switching the unit off and on again.
Sensor failure alarm
Label E01 is displayed and the alarm LED is activated. The unit stops.
High/Low temperature alarm
Alarms are produced when the actual temperature goes out of a certain range determined on the basis of
the set point.
In case of low temperature the alarm LED lights up and LA is displayed; in case of high temperature the alarm LED
lights up and HA is displayed.