Accorroni PACK DUE 12, Technical Manual

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9.1 DISPLAY
In normal view displays the alarm code if at least an alarm is active . In case of multiple alarms activation, it will display the first
alarm, while the second appears when the first is reset.
9.2 LED
Compressor LED
•
ON if the compressor is running
•
OFF if the compressor is off
•
FLASHING if timings are in progress waiting for compressor’s start up
Sanitary water LED
•
ON if sanitary water valve is in open position
•
OFF if the sanitary water valve is in closed position
Defrosting LED
•
ON in defrost operating mode
•
OFF if defrosting mode is disabled or completed
•
FLASHING if defrosting cycle interval’s time is in progress
Antfreeze resistance LED
•
The LED is ON if the antifreeze resistance is active.
Water pump LED
•
The LED is ON if the water pump is running.
Alarm LED
•
The LED is ON if an alarm is activated.
Heat LED
•
The LED is ON if the unit is in the heating mode operation.
Cool LED
•
LED is ON if the unit is in the cooling mode operation.
9.3 ANTIFREEZE PROTECTION RESISTANCES (if the KAS accessory is present)
The heating cable placed on the basement of the appliance is equipped with a built ‐ in thermostat which activates the cable even if
the unit is off (but energized) when the outside air temperature decreases below 5°C.
9.4 ALARMS
9.4.1 Sensor alarms
The alarm will be activated in the case of a short or open circuit of any connected and enabled sensor.
The alarm will be activated also when the temperature becomes higher than the sensors’ upper limit (100°C) or less than the
lower limit ( ‐ 50°C).
9.4.2 Time out inverter
Supposing the controller does not communicate with the driver of the compressor, the time out alarm will be activated in order to
prevent a system’s control loss.
9.4.3 High pressure
If the on board pressure transductor detects a pressure higher than 40 bar, the alarm will be activated.
In this case the compressor will stop immediately.
The alarm will reset when the pressure decreases under 36 bar.
9.4.4 High pressure flow switch (in series with the compressor outlet probe)
If the pressure switch on the machine detects a pressure higher than 42 bar the alarm will be active.
In this case, the compressor will be immediately stopped. The alarm resets when the pressure drops below 32 bar.
9.4.5 Low pressure
If the on board pressure transductor detects a pressure lower than 2 bars, the alarm will be activated.
In this case the compressor will stop immediately.
The alarm will reset when the pressure goes over 6 bar.
9.5 POWER FAILURE
After power supply reset:
1. The system comes back to the previous state before the power failure.
2. If the system is defrosting, this mode will be cancelled after power supply reset.
3. All the running timings will be cleared and reset again.