Alarm
ID
Alarm Name Alarm
Severity
Possible Causes Troubleshooting
2064 Device Fault Major An unrecoverable fault has
occurred on a circuit inside
the SUN2000.
Cause ID = 1–12
● 1: The Boost input is
short-circuited.
● 2: The Boost input
experiences overcurrent.
● 3: The control circuit is
faulty.
● 4: The inverter circuit is
abnormal.
● 5: The residual current
sensor is faulty.
● 6: The temperature
detection fails.
● 7: EEPROM read/write
fails.
● 8: The auxiliary power
supply is abnormal.
● 9: The grid-tied relay is
abnormal.
● 10: The DC bus
experiences overvoltage.
● 11: The DC bus
experiences
undervoltage.
● 12: The DC bus
experiences voltage
imbalance.
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.
SUN2000-(2KTL-6KTL)-L1
User Manual 8 System Maintenance
Issue 04 (2021-04-01) Copyright © Huawei Technologies Co., Ltd. 90
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