Huawei SUN2000 Series User Manual page 77

SUN2000-(3KTL-10KTL)-M0
User Manual
Alarm ID Alarm
Name
2062 Low
Insulation
Resistance
2063 Cabinet
Overtempe
rature
2064 Device
Fault
Upgrade
2065
Failed or
Version
Mismatch
2066 License
Expired
Issue 04 (2019-10-18)
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.
Minor Cause ID = 1, 2 and 4
The upgrade ends abnormally.
NOTE
Upgrade the inverter again if it is
stuck in initialization state
without generating any alarms
and cannot be restored to the
normal state during the upgrade
when the PV inputs are
disconnected and reconnected
next time.
Warning Cause ID = 1

The privilege certificate has
entered the grace period.
 The privilege feature will
be invalid soon.
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.
1. 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.
7 Maintenance
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