Page 70 of 80 Instruction Manual for AURORA CDD BCG.00613_AA
Part 5 Troubleshooting
OverTemp E014
High internal temperature recorded by the
inverter. This parameter depends in part on
the power that the inverter must supply, as
the internal inverter temperature is affected
by the heat dissipated internally by its
components. This may be caused by:
a)
Failure to observe the installation
conditions
b) Internal inverter fault
a) Verify the installation conditions
(exposure to sunlight) and check that air
flow to the MICRO inverter is not
obstructed, so as to permit cooling of the
device. Check that the ambient temperature
measured around the MICRO inverter does
not exceed the limits set in the technical
data.
b) Verify the MICRO-
inverter temperature
readings (see the Internal Web Server
section in the CDD manual). If one of the
temperatures remains at
not compatible with the environmental con-
ditions (e.g. -
40°C internal temp. reading
with 20°C effective ambient temperature),
the alarm may be due to internal inverter
causes.
Ground
fault
E018
The error is generated when a ground
leakage current is detected in the DC
section of the system. This may be caused
by:
a) PV module ground leakage
b) Internal inverter fault
See the “Verification of ground leakage” and
“Measuring the insulation resistance”
sections for information on how to perform
checks and measurements.
a) If the measured insulation resistance
value is less than 1KΩ, the PV module has
a ground leakage that prevents the grid
connection of the inverter. In this case the
PV module must be replaced.
b) If the measured value exceeds 1KΩ, try
connecting the MICRO-
inverter to a
different PV module. If the error persists,
the alarm may be caused by internal
inverter faults. To perform this test, the
MICRO-
inverter Ground Fault condition
must be reset via the Web Server.
DC
Injection
E023
The error is generated if the DC component
of the current supplied to the grid exceeds
the threshold set by the country of
installation’s applicable regulation. In any
case, the inverter will automatically try to
reconnect to the grid. This may be caused
by:
a) Sporadic recurrence of this error is a
sign of large grid distortions or sudden
changes in irradiance.
b) Systematic recurrence of this error may
be due to an inverter fault.
a) Verify the grid parameters and, if the grid
voltage is strongly distorted, please contact
your grid operator to address the problem
If the grid voltage is stable, the error may
also be due to sudden irradiance variations.
In this case, the inverter will automatically
try to reconnect to the grid and no actions
are required to solve the problem.
b) If the grid voltage is stable, yet the error
systematically persists, the malfunction may
be caused by an internal inverter fault
Internal
Error
E024
a) The alarm may occur during inverter ini-
tialization and is caused by the initialization
of communication between the CDD and
the MICRO inverters.
b) Systematic occurrence of this error may
a) The alarm will automatically reset upon
connection of the inverter to the grid, and no
actions are required to solve the problem.
b) If the error systematically persists, the
malfunction may be caused by an internal
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