EN
127
- Error code
- Error message
- LED status
Name of Alarm and Cause
Solution
- E019
- Internal error
- Yellow LED
Failure of test on sensor to measure the
leakage current (DC side):
Before connecting to the grid the inverter
runs a self-test regarding the sensor for
the leakage current. The test is carried out
by “forcing", in the sensor of the leakage
current, a current with a known value: the
microprocessor compares the value read
with the known value.
The error is generated if the comparison
between the read value and the known
value during the test does not fall within the
allowed tolerance.
• Error inside the inverter and cannot be checked externally.
By its nature, the alarm only occurs prior to connection to the
grid
- If the problem persists (once the inverter has been switched
off and back on again), contact customer assistance.
- E020
- Internal error
- Yellow LED
Failure of the test on the relay of the
“Booster” (DC-DC circuit):
Before connecting to the grid, the inverter
carries out some internal tests. One of
these tests concerns the correct operation
of the booster relay. The test is carried out
by “forcing” the switching of the relay and
checking its operation.
The error is generated if a problem is found
in actioning the relay.
• Error inside the inverter and cannot be checked externally.
By its nature, the alarm only occurs prior to connection to the
grid
- If the problem persists (once the inverter has been switched
off and back on again), contact customer assistance.
- E021
- Internal error
- Yellow LED
Failure of the test on the inverter's relay
(DC-AC circuit):
Before connecting to the grid, the inverter
carries out some internal tests. One of
these tests concerns the correct operation
of the inverter relay. The test is carried out
by “forcing” the switching of the relay and
checking its operation.
The error is generated if a problem is found
in actioning the relay.
• Error inside the inverter and cannot be checked externally.
By its nature, the alarm only occurs prior to connection to the
grid
- If the problem persists (once the inverter has been switched
off and back on again), contact customer assistance.
- E022
- Internal error
- Yellow LED
Timeout of the tests undertaken on the
relays inside the inverter:
Execution time for the self-test carried
out on the relay of the DC_AC (inverter)
circuit too high. It may indicate a problem
connected to the aforementioned relays
• 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.
- E023
- DC injection
- Yellow LED
Feeding of direct current to grid outside
of range:
The error is generated if the direct
component of the current supplied to the
grid exceeds the threshold of 0.5% of the
rated operating current.
In any case, the inverter does not stop
because of the E023 error, but tries to
connect to the grid again.
The sporadic repetition of the error is a
sign of serious grid distortions or sharp
irradiation changes, while systematic
repetition of the error signal will indicate a
breakdown on the inverter
Once the error appears, the inverter attempts to resume normal
operation.
- Should the error occur sporadically, it may be caused by a
brusque transition of the grid voltage or of the input voltage, but
is not due to a malfunction by the inverter.
- If the error is connected to an internal fault, it will continue to
appear and so it is necessary to contact customer assistance.
- E024
- Internal error
- Yellow LED
Error inside the inverter:
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.