Huawei SUN2000 Series User Manual page 90

SUN2000-(8KTL-20KTL)-M2
User Manual
Alarm Alarm Name
ID
2062 Low Insulation
Resistance
2063 Cabinet
Overtemperatur
e
2064 Device Fault
Issue 01 (2020-07-02)
Alarm Possible Cause
Severity
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.
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.
Major Cause ID = 1–12
An unrecoverable
fault has occurred
on a circuit inside
the inverter.
Copyright © Huawei Technologies Co., Ltd.
Troubleshooting Suggestion
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.
● 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.
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.
Note: If the cause ID is ID 1,
perform the preceding operation
when the PV string current is less
than 1 A.
8 Maintenance
83