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waiting to be manually reset. This condition is communicated to the user by the lighting of
the red "Alarm" led and the appearance 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 there-
fore 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 electropump 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 protection cannot work. However, it is
advised not to leave the system full during long periods of inactivity: drain the sys-
tem accurately through the drainage cap and put it away in a sheltered place.
6.1.4 - "BP1" Blockage due to fault of the delivery pressure sensor (system pres-
surisation)
If the device detects a fault in the delivery pressure sensor the pump remains blocked and
the error signal "BP1" is given. This status begins as soon as the problem is detected and
ends automatically when correct conditions have been restored.
6.1.5 - "BP2" Blockage due to fault of the suction pressure sensor
If the device detects a fault in the suction pressure sensor the pump remains blocked and
the error signal "BP2" is given. This status begins as soon as the problem is detected and
ends automatically when correct conditions have been restored.
6.1.6 - "PB" Blockage due to supply voltage outside specifications
This occurs when the allowed line voltage at the supply terminal assumes values outside
the specifications. It is reset only automatically when the voltage at the terminal returns
within the allowed values.
6.1.7 - "SC" Blockage due to short circuit between the motor phases
The device is provided with protection against the direct short circuit which may occur
between the motor phases. When this blockage is indicated you can attempt to restore op-
eration by simultaneously holding down the ˄ and ˅ keys, but this will not have any effect
61
until 10 seconds have passed since the moment the short circuit occurred.
6.2 - Manual reset of error conditions
In error status, the user can cancel the error by forcing a new attempt, pressing and then
releasing the ˄ and ˅ keys.
6.3 - Self-reset of error conditions
For some malfunctions and blockage conditions, the system attempts automatic self-reset.
The auto self-reset procedure concerns in particular:
"BL"
Blockage due to water lack
"PB"
Blockage due to line voltage outside specifications
"OT"
Blockage due to overheating of the power stages
"OC"
Blockage due to motor overload
"BP"
Blockage due to fault of the pressure sensor
For example, if the system is blocked due to water lack, the device automatically starts a
test procedure to check whether the machine is really left definitively and permanently dry.
If during the sequence of operations an attempted reset is successful (for example, the
water comes back), the procedure is interrupted and normal operation is resumed.
Table 9 shows the sequences of the operations performed by the device for the different
types of blockage.
Automatic resets of error conditions
Display
Description
indication
Blockage due to water lack
BL
Blockage due to line voltage
PB
outside specifications
Blockage due to overheating
OT
of the power stages
Automatic reset sequence
- One attempt every 10 minutes for a total of
6 attempts.
- One attempt every hour for a total of 24 at-
tempts
- One attempt every 24 hours for a total of 30
attempts.
- It is reset when it returns to a specific voltage.
- It is reset when the temperature of the power
stages returns within the specifications.
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