Alarm
ID
Alarm Name Alarm
Severity
Cause Troubleshooting Suggestions
2062 Low Insulation
Resistance
Major Cause ID=1
1. The PV string is short-
circuited to the PE
cable.
2. The PV string has been
in a moist environment
for a long time and the
circuit is not well
insulated to ground.
1. Check the impedance of
the PV string to PE. If a
short circuit occurs, rectify
it.
2. Check that the ground
cable of the inverter is
correctly connected.
3. If you are sure that the
impedance is less than the
preset value in a cloudy or
rainy environment, reset
Insulation resistance
protection.
2063 Cabinet
Overtemperatu
re
Minor Cause ID=1
1. The inverter is installed
in a place with poor
ventilation.
2. The ambient
temperature is too high.
3. The inverter is not
working properly.
1. Check the ventilation and
whether the ambient
temperature of the inverter
exceeds the upper limit. If
the ventilation is poor or
the ambient temperature is
too high, improve
ventilation.
2. If both the ventilation and
ambient temperature meet
requirements yet the fault
persists, contact your
dealer or Huawei technical
support.
2064 Device Fault Major Cause ID=1
An unrecoverable fault has
occurred on a circuit inside
the inverter.
Turn o the AC output switch
and DC input switch, and then
turn them on after 15
minutes. If the fault persists,
contact your dealer or Huawei
technical support.
2065 Upgrade Failed
or Software
Version
Unmatch
Minor Cause ID=1
The upgrade does not
complete normally.
1. Perform an upgrade again.
2. If the upgrade fails several
times, contact your dealer.
2066 License Expired Warning Cause ID=1
1. The privilege license
has entered the grace
period.
2. The privilege feature
will be invalid soon.
1. Apply for a new license.
2. Load a new license.
SUN2000-(175KTL-H0, 185KTL-INH0, 185KTL-H1
User Manual
8 Maintenance
Issue 05 (2020-08-30) Copyright © Huawei Technologies Co., Ltd. 96
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