ID Name Severity Cause Solution
2063 Cabinet
overtem
perature
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
operating properly.
1. Check the ventilation and
ambient temperature at the
inverter installation position.
2. If the ventilation is poor or
the ambient temperature
exceeds the upper threshold,
improve the ventilation and
heat dissipation.
3. If both the ventilation and
ambient temperature meet
requirements yet the alarm
persists, contact your dealer
or Huawei technical support.
2064 Device
fault
Major Cause ID = 1–15
An unrecoverable fault
occurs 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 alarm persists, contact your
dealer or Huawei technical
support.
NOTICE
Cause ID = 1: Perform the preceding
operations when the PV string
current is less than 1 A.
2065 Upgrade
failed or
version
mismatc
h
Minor Cause ID = 1–6
The upgrade is not
completed normally.
1. Perform an upgrade again.
2. If the upgrade fails several
times, contact your dealer or
Huawei technical support.
2066 License
expired
Warning Cause ID = 1
● The privilege license has
entered the grace
period.
● The privilege feature is
about to expire.
1. Apply for a new license.
2. Load a new certicate.
SUN2000-(50KTL-ZHM3, 50KTL-M3)
User Manual 8 Maintenance
Issue 05 (2023-02-28) Copyright © Huawei Technologies Co., Ltd. 80
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