EN
129
- Error code
- Error message
- LED status
Name of Alarm and Cause
Solution
- E033
- Undertemper.
- Yellow LED
Low ambient temperature:
Temperature outside the inverter below
-25°C
• Wait for the temperatures to which the inverter is exposed to
return to the operating range.
- If the problem persists, contact customer assistance. You
must remember to wait for the time necessary to allow the
inverter to warm up.
- E034
- IGBT not ready
- Yellow LED
“IGBT” circuitry not ready:
Error inside the inverter
• Error inside the inverter and cannot be checked externally.
- If the problem persists (once the inverter has been switched
off and back on again), contact customer assistance.
- E035
- Remote Off
- Yellow LED
Inverter awaiting “remote ON” command:
The inverter has been switched off
remotely (remote OFF) and remains in
waiting state for the signal that will switch it
on again (remote ON).
• Switch the inverter back on remotely. If the unit does not
switch on, disable the remote on/off function and switch the
equipment off completely and then switch it on again.
- If the problem persists (once the Remote ON/OFF function
has been reactivated), contact customer assistance.
- E036
- Internal error
- Yellow LED
Average of the measurements of grid
voltage outside of range:
The average value of the grid voltage
(sampled every 10 minutes) does not
fall within the permitted ranges. The grid
voltage in the point connected to the
inverter is too high. This may be caused
by a grid impedance that is too high. In
the final stage of the timeout, the inverter
limits the power to check whether the
grid voltage has stabilised into regular
parameters. If this does not happen, the
inverter disconnects from the grid
• Check the grid voltage in the connection point to the inverter.
- If the grid voltage differs from the range due to the conditions
of the distribution grid, ask the operator to adjust the grid
voltage. If the operator authorises a change to the inverter's
parameters, agree the new limits with customer assistance.
- E046
- Str. test failed
- No LED
Error during the automatic check of the
string voltages (only in models with the
“fuse-control” board):
In some inverter models it is possible to
carry out the check test of the polarity of
the strings connected to the input.
This error signal occurs when, during the
test stage, an inverted string is recorded
• Section the inverter and check the polarity of the string(s)
which the inverter has recorded as inverted.
- Once all the strings have been correctly connected, activate
the system once again; the inverter will once again check the
correct polarity of the string inputs at the end of which it will
carry out the checks for the grid connection.
- If the problem persists (once the inverter has been switched
off and back on again), contact customer assistance.
- E049
- Internal error
- Yellow LED
Error in the “AC feed-forward” circuit:
Error inside the inverter
• Error inside the inverter and cannot be checked externally.
- If the problem persists (once the inverter has been switched
off and back on again), contact customer assistance.
- E050
- AFDD Activated
- Yellow LED
Arc Fault protection activated:
Possible photovoltaic arc detected on the
DC side.
• If it is the first time this problem has occurred, press the ESC
button for 5 seconds and wait for the unit to restart.
- If the problem persists (once the inverter has been switched
off and back on again), contact customer assistance.
- E051
- Safety mem. Fault
- Yellow LED
Error inside the inverter.
• Error inside the inverter and cannot be checked externally.
- If the problem persists (once the inverter has been switched
off and back on again), contact customer assistance.
- E053
- AFDD Fault
- Yellow LED
Arc Fault board autotest failed:
Problem detected during the AFDD board
autotest phase.
• Error inside the inverter and cannot be checked externally.
- If the problem persists (once the inverter has been switched
off and back on again), contact customer assistance.
- E054
- AFDD comm. Fault
- Yellow LED
Arc Fault board communication error:
Error on the RS485 serial communication
detected between the inverter and the
AFDD board.
• Error inside the inverter and cannot be checked externally.
- If the problem persists (once the inverter has been switched
off and back on again), contact customer assistance.
- E055
- AFDD wrong conf.
- Yellow LED
Arc Fault board parameter reading error:
Error in the parameter reading by the
system.
• Error inside the inverter and cannot be checked externally.
- If the problem persists (once the inverter has been switched
off and back on again), contact customer assistance.
- E057
- Vbulk reading
- Yellow LED
Input voltage (Vin) higher than booster
voltage (Vbulk):
The error occurs if the input voltage
exceeds the Bulk voltage (voltage on the
DC-DC circuit inside the inverter)
• It is necessary to measure the input voltage inside the inverter
with a voltmeter.
- If it is higher than the maximum voltage of the operating
range, the alarm is genuine and it is necessary to check the
configuration of the PV generator. If the voltage has also
exceeded the maximum input threshold the inverter could be
damaged.
- If it is lower than the maximum voltage of the operating
range, the alarm is caused by an internal malfunction and it is
necessary to contact customer assistance.
