Troubleshooting - Huawei SUN2000 Series User Manual

SUN2000-(196KTL-H3, 200KTL-H3, 215KTL-H3)
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User Manual

8.5 Troubleshooting

When the inverter is faulty, the fault information can be displayed on the mobile
phone app or the remote monitoring system. During troubleshooting, perform
power-off operations according to
perform power-on operations according to
Alarm severities are defined as follows:
●
●
●
Table 8-1 Common alarms and troubleshooting measures
Alarm Alarm Name
ID
2001 High String
Input Voltage
2011 String Reverse
Connection
Issue 03 (2021-09-30)
Major: The inverter is faulty. As a result, the output power decreases or the
grid-tied power generation is stopped.
Minor: Some components are faulty without affecting the grid-tied power
generation.
Warning: The inverter works properly. The output power decreases or some
authorization functions fail due to external factors.
Alarm Cause
Severity
Major The PV array is not
properly configured.
Excessive PV modules are
connected in series to a
PV string, and therefore
the PV string open-circuit
voltage exceeds the
maximum operating
voltage of the inverter.
● Cause ID 1: PV strings
1, 2, 3 and 4.
● Cause ID 2: PV strings
4, 5, 6, 7, 8 and 9.
● Cause ID 3: PV strings
10, 11, 12, 13 and 14.
Major The PV string is reversely
connected.
Cause ID 1–14: PV strings
1–14.
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8.2 Power-Off for Troubleshooting, and
6.2 System Power-On.
Troubleshooting Suggestions
Reduce the number of PV
modules connected in series in
the PV string until the PV
string open-circuit voltage is
not greater than the
maximum operating voltage
of the inverter. After the PV
array configuration is
corrected, the alarm
disappears.
Check whether the PV string is
reversely connected to the
inverter. If yes, wait until the
PV string current drops below
0.5 A. Then, set all DC
switches to OFF and correct
the PV string connection.
8 Maintenance
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