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64
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 delivery pressure sensor
BP2
Blockage due to reading error on the suction pressure sensor
PB
Blockage due to supply voltage outside specifications
LP
Block for low DC voltage
HP
Block for high DC voltage
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
6.1 - Description of blockages
6.1.1 -
“BL” Anti Dry-Run (Protection against dry running)
In the case of lack of water the pump is stopped automatically after the
time TB. This is indicated by the red “Alarm” led and by the letters “BL”
on the display. After having restored the correct flow 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 flow of water and resetting the
Table 8: Indications of blockages
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.
6.1.2 - 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 5.6.6).
In Basic mode, once the condition of recurrence is detected the pump
stops and remains waiting to be manually reset. This condition is com
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municated 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.
6.1.3 - Anti-Freeze (Protection against freezing of water in the system)
The change of state of water from liquid to solid involves an increase in
volume. It is therefore essential to ensure that the system does not remain
full of water with temperatures close to freezing point, to avoid breakages
of the system. This is the reason why it is recommended to empty any elec
-
tropump that is going to remain unused during the winter. However, this
system has a protection that prevents ice formation inside by activating the
electropump when the temperature falls to values close to freezing point. In
this way the water inside is heated and freezing prevented.
The Anti-Freeze protection works only if the system is regularly fed:
with the plug disconnected or in the absence of current the protec
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tion cannot work. However, it is advised not to leave the system full
during long periods of inactivity: drain the system accurately through
the drainage cap and put it away in a sheltered place.
