Huawei SUN2000-3KTL-M0 User Manual page 61

SUN2000-(3KTL-12KTL)-M0
User Manual
Alar Alarm Name
m ID
2062 Low Insulation
Resistance
2063 Overtemperature
2064 Device Fault
2065 Upgrade Failed
2066 License Expired
Issue 01 (2018-12-30)
Alarm Possible Cause
Severity
Major  PV arrays are
short-circuited with PE.

The ambient air of the PV
array is damp and the
insulation between the PV
array and the ground is
poor.

Major The SUN2000 is installed
in a place with poor
ventilation.
 The ambient temperature is
too high.

The SUN2000 is not
working properly.
Major An unrecoverable fault has
occurred on a circuit inside the
SUN2000.
Major The upgrade does not end
normally.

Minor The privilege certificate
has entered the grace
period.
 The privilege feature will
be invalid soon.
Copyright © Huawei Technologies Co., Ltd.
7 Maintenance
Troubleshooting Suggestion
1. Check the output resistance of
the PV array to ground. If
there is a short circuit or lack
of insulation, rectify it.
2. Check that the PE cable of the
SUN2000 is correctly
connected.
3. If you are sure that the
impedance is less than the
default value in a cloudy or
rainy environment, log in to
the mobile phone app,
SmartLogger, or NMS and
reset the insulation impedance
protection threshold.

Check the ventilation and
ambient temperature of the
SUN2000 installation position.
 If the ventilation is poor or the
ambient temperature exceeds
the upper threshold, improve
the ventilation and heat
dissipation.

If the ventilation and ambient
temperature both meet
requirements, contact your
dealer or Huawei technical
support.
Turn off the AC output switch
and DC input switch, and then
turn them on after 5 minutes. If
the fault persists, contact your
dealer or Huawei technical
support.
1. Perform the upgrade again.
2. If the upgrade fails several
times, contact your dealer or
Huawei technical support.
1. Apply for a new certificate.
2. Load the new certificate.
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