Possible Malfunctions - Italtecnica Sirio Entry 230 Instrucciones Para El Uso

with the wiring of the motor to the Sirio Entry. If this alarm is often displayed the system should
be checked by the installer.

POSSIBLE MALFUNCTIONS:

When one of the cocks in the system is opened, the pump does not start, or there is a few
seconds delay before it starts
The Pmin is set too low or a check valve has been fitted downstream of the device. Try increasing
the start pressure Pmin and remove all valves fitted downstream of the Sirio Entry.
When the cocks are closed, the pump stops but restarts a few seconds later and there is no
leakage from the system
The difference between the Pmin and the Pmax is too low and the drop in pressure that occurs
when the pump stops is sufficient to make it restart. Increase the Pmax value or decrease the Pmin.
The pump keeps switching on and off
There is leakage in the system. Check the various hydraulic connections. Check the display for
pressure drops when the cocks are closed. Check the Sirio Entry's check valve for dirt which could
be preventing it from closing properly and, if necessary, clean it with compressed air.
The device often signals 'dry running'
The pump intake pipe drains when the system is not used for some time, thereby preventing it
priming the next time it is started. If there is a foot valve fitted, check its seal.
The device frequently signals an inverter error.
The supply voltage may not comply with the equipment specifications; the control must be carried
out by qualified personnel.
The inverter no longer exchanges heat with the water that runs through the device or the
temperature of the fluid pumped is too high; check for foreign bodies that block the flow of water
and if necessary have the device checked by the manufacturer.
When the water flow is extremely low, the pump does not operate normally.
The flow values are too low and as the device is unable to detect them, it shuts down the motor
pump. Fit a small surge tank (1-2 litres) in the system to give it more flexibility and reduce the
number of restarts.
The pump does not stop
There is substantial leakage in the system or the check valve on the device is jammed by dirt; try
moving the check valve with your fingers and checking that the spring can maintain the seal.
Overload: This alarm appears when the absorption of the motor
pump is greater than the maximum current value set (Imax); this
may be caused by extremely difficult working conditions for the
motor pump, problems related to the motor winding , if the pump
is restarted continuously at short intervals or following problems
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