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Idiomas disponibles
10. TROUBLE SHOOTING
Earth Fault Alarm
This inverter complies with IEC 62109-2 clause 13.9 for earth fault alarm
monitoring. If an Earth Fault Alarm occurs, the error code 6 will be
displayed on the LCD. Red LED indicator will also light up.
If an external indication of earth fault alarm is required, please connect PV
System to inverter monitoring app/portal. The monitoring platform will
send email notification in the event of an Earth Fault. Please refer to Sector
6.1 and the Wi-Fi stick guide on how to setup your inverter communication
function.
Full Error Code and Corrective Measures
When the PV system does not operate normally, we recommend the
following solutions for quick troubleshooting. If an error occurs, the Error
code will be displayed on the inverter's screen or on the monitoring App/
Web, the red LED will light up. The corresponding corrective measures are
as follows:
Error Code
Fault Name
Description
Functional
fault in
MCU abnormal
Micro-
1
self-check in
Controller
start process
Unit (MCU)
A faulty
AC current sensor
current
detect current
sensor
2
abnormal in the
detected
start process
Ground fault
circuit
GFCI sensor self-
3
check abnormal
interrupter
(GFCI)
Corrective Measures
Disconnect the inverter from the utility
grid and the PV array, and reconnect it
after LED turns off. If this fault is still being
displayed, please contact service.
Disconnect the inverter from the utility grid
and the PV array, and reconnect it after
LED turns off. If this fault is still being
displayed, please contact service.
Disconnect the inverter from the utility
grid and the PV array, and reconnect it
after LED turns off. If this fault is still being
displayed, please contact service.
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A faulty grid
4
relay detec-
ted
5
PV voltage
too high
Surface
6
insulation
resistance
error
Ground fault
circuit
interrupter
(GFCI)
7
exceeds the
permissible
range
Inverter
temperature
8
too high
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1. Disconnect the inverter from the utility
grid and the PV array, and reconnect it
after LED turns off.
2. If the fault persists, measure the phase
to phase voltage and phase to zero and
The difference
zero to ground voltage with a multimeter
between INV
to ensure that the voltage is normal and
voltage and
the zero to ground voltage value should
output voltage
not be greater than 10V.
exceeds limit.
3. Disconnect the inverter from the utility
grid and the PV array, and reconnect it
after LED turns off. If this fault is still being
displayed, please contact service.
When the PV
Check the open-circuit voltages of the
voltage of any
strings and make sure it is below the
circuit is greater
maximum DC input voltage of the
than 600V, it is
inverter. If the input voltage lies within
determined as the
the permissible range while the fault
PV voltage is too
occurs, please contact the service.
high.
1. If it happens occasionally, it may be
In the process of
caused by rainy or humid environment.
power on and start-
After the fault is eliminated, the inverter
up, the insulation
can resume normal operation without
impedance of PV +
other actions.
and PV - to ground
2. If there is continuous alarm, please
is detected. When
check the PV array's insulation to ground
the detection
and make sure that the insulation
insulation
resistance to ground is greater than
impedance is less
200KΩ. Otherwise, visual inspection of all
than 200kohm, it is
PV cables and modules. Make sure the
judged as insulation
grounding connection of the inverter is
fault.
reliable.
If all above are normal, please contact the
service.
1. Make sure the grounding connection
of the inverter is reliable.
residual current
2. Make a visual inspection of all PV
over the
cables and modules.
permission range
3. If this fault is still shown, contact the
service.
Please confirm:
Heat sink and
1. Whether the airflow to the heat
internal
sink is obstructed.
environment
2. Whether the installation site is in
temperature
direct sunlight and ambient
higher than 85
3. temperature around the inverter
degree
is too high.
If all above is normal, contact the service.
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V.2
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