ABB PVI-3.0-TL-OUTD-S-US Product Manual page 54

Display Message Causes
E018 The alarm is generated when,
Ground Fault during normal operation of the
Leakage current fail inverter, a ground leakage cur-
rent is detected in the DC sec-
tion of the system. The alarm is
accompanied by the lighting up
of the red LED on the front of the
inverter. The inverter may even
also generate the E018 alarm
message for AC leakage currents
associated with the capacitive
nature of the photovoltaic array
compared to ground.
E019 Before connecting to the grid, the
Self-Test Error 3 inverter carries out an autotest
Leakage current that tests the leakage current
sensor self- test fail sensor. The test is carried out by
"forcing" a current of known value
in the leakage current sensor: the
microprocessor compares the
read value with the known value.
The error is generated if the com-
parison between the read value
and the known value during the
test is not within the allowed tol-
erance.
E020 Before connecting to the grid, the
Self-Test Error 1 inverter carries out some internal
Booster relay self- tests. One of these tests regards
test fail the correct operation of the boost
relay. The test is carried out by
"forcing" the switching of the re-
lay and checking its functionality.
The error is generated if a prob-
lem is found with the operation of
the relay.
E021 Before connecting to the grid, the
Self-Test Error 2 inverter carries out a test that re-
gards the operation of the invert-
Inverter relay self- er relay. The test is carried out by
test fail "forcing" the switching of the relay
and checking its functionality. The
error is generated if a problem is
found with the operation of the
relay.
Solution
If possible, measure the insulation resistance us-
ing a megohmmeter positioned between the photo-
voltaic field (positive terminal short-circuited to the
negative pole) and ground.
If the measured value is less than 1 megohm, the
PV array must be checked by a technician/installer
to identify and eliminate the problem.
If the measured value is greater than 1 megohm
and the error warning continues to be present, con-
tact customer service.
This is an error inside the inverter that cannot be
checked externally. If the problem persists (after
switching the inverter off and then on again), con-
tact customer service. By its nature, the alarm ap-
pears only before connection to the grid.
This is an error inside the inverter that cannot be
checked externally. If the problem persists (after
switching the inverter off and then on again), con-
tact customer service. By its nature, the alarm ap-
pears only before connection to the grid.
This is an error inside the inverter that cannot be
checked externally. If the problem persists (after
switching the inverter off and then on again), con-
tact customer service. By its nature, the alarm ap-
pears only before connection to the grid.
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5 - Troubleshooting