Italtecnica Sirio Manuel D'instructions page 12

5.0 Ta max
5.1 Tm max
5.2 Ta reduction index
5.3 Tm reduction index
5.6 Minimum voltage
5.7 Maximum voltage
5.9 Debug Variable
ALARMS
In the event of system anomalies or malfunctions, one of the following screens will appear on the Sirio display. Each error is
coded with the letter "E" followed by a number from 0 to 13. The number which appears in brackets represents the number of
recurrences of each error. To reset an alarm, after having resolved the cause, it is usually sufficient to press the central "reset"
key or interrupt the electrical power supply for a few seconds.
E0 – Low voltage: indicates that the power supply voltage is too low. Check the input voltage value
E0 ( 0)
Lo.Volt
E1 ( 0)
E1 – High voltage indicates that the power supply voltage is too high. Check the input voltage
Hi.Volt
value
E2 ( 0) E2-Short Circuit: This message will appear on the screen when a short circuit is detected at the
inverter output; this may occur following incorrect connections of the electric motor, damage to the
Shortcir
electrical insulation in the wires which connect the electric pump to the device or a fault in the
pump's electric motor. When this error appears the electrical system should be checked as soon as
possible by specialised personnel. The error may only be removed by disconnecting the equipment from the electrical power
source and resolving the cause of the fault. Attempting to restart the inverter in the presence of a short-circuit in output may
cause serious damage to the equipment and be a source of danger to the user.
E3 ( 0)
E3-Dry running: this message appears when the system is stopped following a pump intake water
shortage. If the auto-reset function has been enabled, the Sirio will carry out automatic attempts to
Dry run
check for the availability of water. To clear the error status, press the central "reset" button.
E4 ( 0)
E4- Ambient temperature: the error appears if the maximum internal ambient temperature of the
inverter is exceeded. Check the conditions of operation of the inverter.
Amb.Temp
E5 ( 0)
E5-module temperature: the error appears if the maximum temperature of the IGBT module of the
inverter is exceeded. Check inverter operating conditions, in particular the water temperature and the
IGBTtemp
current absorbed by the pump.
E6-Overload: this alarm is displayed when electric pump absorption exceeds the maximum set
E6 ( 0)
current as entered in the Imax value: this may occur following intensive use of the electric pump,
continuous restarts at close intervals, problems with the motor windings, or following problems with
Overload
the electrical connection between the motor and Sirio. If this alarm trips frequently, arrange for the
system to be checked by the installer.
E7 ( 0)
E7-Out of Curve: this alarmappears if the pump operates over the maximum allowed performance.
To prevent this reduce the delivery rate and make sure the pump is running withn the nominal flow
OutCurve
and pressure ratings.
E8 ( 0)
E8-Serial error: this alarm may occur where there is an internal serial communication on Sirio.
Ser.Err.
Contact the technical assistance.
E9-Pressure limit: the alarm intervenes when the maximum set pressure threshold has been
E9 ( 0)
exceeded. If the error appears repeatedly, check the setting of the "P limit" parameter. Also check
other conditions which may have caused an overpressure (for example, partial freezing of the fluid).
Ov.Pres
Maximum ambient temperature
IGBT module maximum temperature
Frequency reduction index on ambient temperature
Frequency reduction index on module temperature
Minimum power supply voltage threshold
Maximum power supply voltage threshold
Debug variable selection for process value display
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