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Alarm in the fault log
Display indication Description
PD Irregular switching off
FA Problems in the cooling system
Blockage conditions
Display indication Description
PH Cutout due to pump overheating
BL Blockage due to water lack
BP1 Blockage due to reading error on the internal pressure sensor
PB Blockage due to supply voltage outside specications
OT Blockage due to overheating of the power stages
OC Blockage due to motor overload
SC Blockage due to short circuit between the motor phases
ESC Blockage due to short circuit to earth
HL Hot liquid
NC Blockage due to motor disconnected
Ei Blockage due to i-th internal error
Vi Blockage due to i-th internal voltage out of tolerance
EY Block for cyclicality abnormal detected on the system
4.1 - Description of blockages
4.1.1 - “BL” Anti Dry-Run (Protection against dry running)
In the case of lack of water the pump is stopped automatically after the
Table 1: Alarms
Table 2: Indications of blockages
time TB. This is indicated by the red “Alarm” led and by the letters “BL” on
the display.
After having restored the correct ow of water you can try to leave the
protective block manually by pressing the “+” and “-“ keys simultaneously
and then releasing them.
If the alarm status remains, or if the user does not intervene by restoring
the ow of water and resetting the pump, the automatic restart will try to
restart the pump.
If the parameter SP is not correctly set, the protection against
water lack may not work correctly.
4.1.2 - Anti-Cycling (Protection against continuous cycles without
utility request)
If there are leaks in the delivery section of the plant, the system starts and
stops cyclically even if no water is intentionally being drawn: even just a
slight leak (a few ml) can cause a fall in pressure which in turn starts the
electropump.
The electronic control of the system is able to detect the presence of the
leak, based on its recurrence.
The Anti-Cycling function can be excluded or activated in Basic or Smart
mode (par 7.6.12).
In Basic mode, once the condition of recurrence is detected the pump
stops and remains waiting to be manually reset. This condition is commu-
nicated to the user by the lighting of the red “Alarm” led and the appear-
ance of the word “ANTICYCLING” on the display. After the leak has been
removed, you can manually force restart by simultaneously pressing and
releasing the “+” and “-“ keys.
In Smart mode, once the leak condition is detected, the parameter RP is
increased to decrease the number of starts over time.
4.1.3 - Anti-Freeze (Protection against freezing of water in the system)
The change of state of water from liquid to solid involves an increase in vol-
ume. It is therefore essential to ensure that the system does not remain full
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