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Alarm codes
(alarm)
Motor jammed (51)
Dry running (57)
Excessive FI tem-
perature (66)
Internal fault
– Hardware fault
(72)
– Starting current
fault (155)
High voltage (74)
Motor connection
interrupted (242)
Warning codes
(warning)
Internal fault
– Memory access
error (84)
– FI parameter
error (85)
Sensor fault (93)
Fault
The pump is
jammed.
The pump does not
pump water.
The temperature in
the stator windings
is too high.
Internal fault in the
pump electronics.
Irregularities in the
power supply can
trigger alarm 72.
The supply voltage
to the pump is too
high.
The motor is not
correctly connected
or separated from
the electronics.
Fault
Fault in pump elec-
tronics
The pump receives
a signal from the
integrated sensor
which is outside the
permissible range.
Auto
reset/
restart
Remedy
Yes
Disassemble the pump head and
remove any foreign matter or impurities
that prevent the pump from rotating.
Check the impeller and, if it is dam-
aged, replace the motor, otherwise
reassemble the pump.
No
First, check that the sensor is correct-
ly connected to the pump housing.
Furthermore, the inflow of the installa-
tion and the correct setting should be
checked.
No
Replace the motor or contact the Biral
service team.
Yes
There may be an unwanted forced flow
through the pump caused by other
pumps/devices in the application. Check
whether the sensor is obstructed by
solids. This can happen if the medium is
not clean. Replace the AQVAtron elec-
tronics or contact the Biral service team.
Yes
Make sure that the power supply is
within the specified range.
No
Also check the cabling for any interrup-
tion or incorrect connection.
Auto
reset/
restart
Remedy
–
Replace the AQVAtron electronics or
contact the Biral service team.
–
Make sure that the plug and cable are
properly connected to the sensor. The
sensor is on the rear of the pump hous-
ing. Replace the sensor or contact the
Biral service team.
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