Alarm
Notification LED
Description
Possible solutions
A08
Locked
rotor
2 flashes of the
yellow alarm led
The automatic frequency limitation
created by the inverter following an
excessive absorption by the motor
(beyond the value set in the param-
eter Rated motor current) causes a
reduction of the frequency below the
average value between Min motor
frequency and Max motor frequency.
Reset mode:
• Alarm reset by STOP key.
• Disconnecting the power supply
• Check the possible solutions for the alarm A01 Overcurrent
motor
A09
Overload
inverter
5 flashes of the
yellow alarm led
The current absorbed by the load ex-
ceeds the rated current of the device.
Reset mode:
• Alarm reset by STOP key.
• Disconnecting the power supply
• Make sure that the motor is free to rotate and check for any
mechanical issues.
• Increase the value of the parameter Ramp up time.
• Increase the value of the parameter Ramp freq. min motor.
• Adjust parameter Voltage boost
• Check the value of the power supply voltage both under no
load and load conditions.
A10 IGBT
trip alarm
5 flashes of the
yellow alarm led
The current absorbed by the load in-
stantaneously exceeds the maximum
current protection of the device's
power module.
Reset mode:
• Automatic reset after 10 seconds
for up to 3 attempts, after which
you must wait for 60 minutes.
• Disconnecting the power supply
• Check the possible solutions for alarms A01 Overcurrent mo-
tor and A09 Overload inverter.
• Check for short circuits between the output phases and the
ground insulation.
• Check that the system is properly grounded.
• Check for electrical noise from other devices connected to
the system.
A11 No
load
Yellow alarm
LED on and
alarm display via
App.
The current absorbed by the load is
too low in relation to the parameter
Rated motor current.
Reset mode:
• Alarm reset by STOP key.
• Disconnecting the power supply
• Check the possible solutions for the alarm A01 Overcurrent
motor
A12 Ad-
dress er-
ror
9 flashes of the
yellow alarm led
In COMBO mode, multiple devices in
the group have the same address.
Reset mode:
• Automatic reset
• Restore the correct value of parameter Address in all the
devices in the group.
• Verify which situation triggers the alarm.
• If the alarm is triggered after a master replacement, check
that the parameter Autorestart is activated.
• Check the electrical connection between the slave unit and
the master, and the presence of possible disturbances.
A13 No
communi-
cation
6 flashes of the
yellow alarm led
In COMBO mode, the communication
between the slave unit and the mas-
ter has been interrupted.
Reset mode:
• Automatic reset
• Check the electrical connection between the slave unit and
the master, and the presence of possible disturbances.
• Exit the master programming menu.
• Attempt a manual reset of the alarm.
CAUTION
Keep signal cables separate and never par-
allel to power cables. If it is necessary to
cross them, make sure that they cross per-
pendicularly.
A14 Min
value
alarm
8 flashes of the
yellow alarm led
The value read by the analog input
is lower than the value set for the pa-
rameter Min alarm value.
Reset mode:
• Automatic reset
• Check the value set for the parameter.
• Check the hydraulic causes that lead to the alarm condition.
• Check that the sensor is working properly.
A15 Key-
board
fault
Yellow alarm
LED on and
alarm display via
App.
One of the keys of the keyboard was
held down for more than 30 seconds.
Reset mode:
• Alarm reset by STOP key.
• Disconnecting the power supply
• Check that the keys are mechanically free.
SUND
35
