Alarm
ID
Alarm Name Alarm
Severity
Possible Cause Troubleshooting Suggestion
2040 Output DC
Component
Overhigh
Major Cause ID = 1
The DC component
in the grid current
exceeds the upper
threshold.
1. The inverter monitors its
external working conditions in
real time. The inverter
automatically recovers after the
fault is rectied.
2. If the alarm occurs frequently,
contact your dealer or Huawei
technical support.
2051 Abnormal
Residual Current
Major Cause ID = 1
The input-to-
ground insulation
impedance has
decreased during
the inverter
operation.
1. If the alarm occurs accidentally,
the external power cable may be
abnormal temporarily. The
inverter automatically recovers
after the fault is rectied.
2. If the alarm occurs frequently or
persists, check that the
impedance between the PV
string and ground is not below
the lower threshold.
2061 Abnormal
Grounding
Major Cause ID = 1
● The neutral wire
or ground cable
is not connected.
● The PV array is
grounded, but
the inverter
output does not
connect to an
isolation
transformer.
Power o the inverter (turn o the
AC output switch and DC input
switch, and wait for 5 minutes),
and then perform the following
operations:
1. Check that the PE cable for the
inverter is connected properly.
2. If the inverter is connected to
the TN power grid, check
whether the N cable is properly
connected and whether the
voltage to ground is normal.
3. Check whether the AC output
connects to an isolation
transformer. If yes, after
powering on the inverter, log in
to the mobile phone app,
SmartLogger, or NMS and
disable Grounding inspection.
SUN2000-(8KTL-20KTL)-M2
User Manual 8 Maintenance
Issue 11 (2023-02-07) Copyright © Huawei Technologies Co., Ltd. 100
To Next Page
Loading...
Need help?
General