Alarm
ID
Alarm Name Alarm
Severity
Possible Cause Troubleshooting Suggestion
2062 Low Insulation
Resistance
Major Cause ID = 1
● The PV array is
short-circuited
to ground.
● The PV array is
in a moist
environment
and the power
cable is not well
insulated to
ground.
1. Check the impedance between
the PV array output and PE, and
eliminate short circuits and poor
insulation points.
2. Check that the PE cable for the
inverter is connected correctly.
3. If you are sure that the
impedance is less than the
preset protection threshold in a
cloudy or rainy environment, log
in to the mobile phone app,
SmartLogger, or NMS and reset
the insulation impedance
protection threshold.
2063 Cabinet
Overtemperatur
e
Minor Cause ID = 1
● The inverter is
installed in a
place with poor
ventilation.
● The ambient
temperature
exceeds the
upper threshold.
● The inverter is
not working
properly.
● Check the ventilation and
ambient temperature at the
inverter 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.
2064 Device Fault Major Cause ID = 1–12
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 5 minutes. If the
fault persists, contact your dealer
or Huawei technical support.
Note: If the cause ID is ID 1,
perform the preceding operation
when the PV string current is less
than 1 A.
SUN2000-(8KTL-20KTL)-M2
User Manual 8 Maintenance
Issue 11 (2023-02-07) Copyright © Huawei Technologies Co., Ltd. 101
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