Troubleshooting - Huawei SUN2000-45KTL-US-HV-D0 User Manual

SUN2000-45KTL-US-HV-D0
User Manual
Item
Sealing

9.2 Troubleshooting

Alarm severities are defined as follows:



Table 9-2 Common alarms and troubleshooting measures
Alarm ID Alarm
Name
High DC
103
Input
Voltage
Issue 04 (2018-06-01)
Check Method
Check whether all cable glands are
properly sealed.
Major: The inverter enters the shutdown mode and disconnects from the power grid to
stop generating electricity after a fault occurs.
Minor: Some components are faulty but the inverter can still generate electricity.
Warning: The inverter output power decreases due to external factors.
Alarm Possible Cause
Severity

Major Cause ID = 1
The PV array is not
properly configured.
Excessive PV modules are
connected in series to PV
strings 1 and 2, and
therefore the PV string
open-circuit voltage
exceeds the inverter
maximum operating
voltage.
 Cause ID = 2
The PV array is not
properly configured.
Excessive PV modules are
connected in series to PV
strings 3 and 4, and
therefore the PV string
open-circuit voltage
exceeds the inverter
maximum operating
voltage.
 Cause ID = 3
The PV array is not
properly configured.
Excessive PV modules are
connected in series to PV
strings 5 and 6, and
therefore the PV string
open-circuit voltage
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9 System Maintenance
Maintenance Interval
Annual
Suggestion

Cause ID = 1
Reduce the number of PV
modules connected in series to
PV strings 1 and 2 until the
open-circuit voltage is less than
or equal to the maximum inverter
operating voltage. After the PV
array configuration is corrected,
the inverter alarm disappears.
 Cause ID = 2
Reduce the number of PV
modules connected in series to
PV strings 3 and 4 until the
open-circuit voltage is less than
or equal to the maximum inverter
operating voltage. After the PV
array configuration is corrected,
the inverter alarm disappears.

Cause ID = 3
Reduce the number of PV
modules connected in series to
PV strings 5 and 6 until the
open-circuit voltage is less than
or equal to the maximum inverter
operating voltage. After the PV
array configuration is corrected,
the inverter alarm disappears.
 Cause ID = 4
Reduce the number of PV
107