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E11-Number of maximum starts/hour:
this error appears if the maximum number of admissible start-
ups per hour has been exceeded. Check for the presence of any leaks in the system. Check pre-loading of
the expansion tank.
E12- Error 12V:
an anomaly has been detected in the internal low voltage power supply circuit. Have
the manufacturer check the device.
E13-Pressure sensor error:
the pressure sensor has detected an incorrect value. Check or replace the
pressure sensor.
POSSIBLE MALFUNCTIONS:
The pump does not stop
The stop frequency is too low; increase this value or run the self adjusting procedure.
The expansion tank does not have the correct pre-load value; check.
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 set “pump start-up DeltaP” is too high. Try to reduce the DeltaP value
.
Ensure that the system is not set to stand-by; press the central key if necessary.
Check correct operation of the external permissive contact (if configured).
When the water flow is extremely low, the pump does not operate normally
The stop frequency is too high; try to lower the value to ensure more uniform operation also at low flow rates.
When the cocks are closed, the pump stops but restarts a few seconds later and there is no leakage from the system
The “pump start-up DeltaP” value is too low; increase.
The expansion tank does not have the correct pre-load value; check.
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 dry running protection pressure value has not been set correctly; correct the value.
The device often signals 'high or low voltage'
The power supply voltage may not comply with the device specifications; have it checked by qualified personnel.
The device overheats and the over-temperature protection intervenes
The forced air cooling system on the heatsink fins may be blocked; check correct operation and condition (cleanliness).
The switching frequency is too high for the power of the pump used; reduce the value.
The ambient temperature is too high for use of this device.
The pump turns at maximum speed but with poor performance
The connection of the pump is incorrect; check the electrical wiring.
The pump turns in the opposite direction; check the direction of rotation.
When more water is required by the system, the pressure drops
This is a normal condition which is due to the fact that the device is unable to force the pump beyond its capacity curve. As a result, once
a certain flow rate is exceeded, the pressure is no longer offset as the pump is already running at the highest number of revolutions allowed.
In these cases, a pump with higher performance levels should be installed.
E11 Max.starting
hour ( 0)
E12 12V supply
Error ( 0)
E13 Press.sensor
error ( 0)
