A flash memory failure means the flash storage on the inverter's monitoring board has run out of space or has developed bad sectors or blocks. On Huawei SUN2000 inverters it appears as alarm 61440 with Minor severity, shown as Flash Fault or Faulty Monitoring Unit depending on the model. If the alarm persists, replace the monitoring board or contact Huawei technical support.
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affectsc1 drafted · lead Monitoring board
tbl=59.r4 h=b125f4aca843tbl=59.r5 h=46367c2285fctbl=43.r6 h=8be6c57c93bctbl=59 h=141ea9cae244caused_byc2 verified · fact Insufficient flash storage
The manuals list insufficient flash memory or flash space as a cause of alarm 61440.
tbl=59.r4 h=b125f4aca843tbl=59.r5 h=46367c2285fctbl=43.r6 h=8be6c57c93bctbl=59 h=141ea9cae244verified by: review-workflowverified on: 2026-10-23
c3 verified · fact Flash memory bad sectors
Bad sectors or bad blocks in the flash, or a faulty flash, are listed as a cause.
tbl=59.r4 h=b125f4aca843tbl=59.r5 h=46367c2285fctbl=43.r6 h=8be6c57c93bctbl=59 h=141ea9cae244verified by: review-workflowverified on: 2026-10-23
presents_asc4 drafted · lead Internal memory error
Huawei SUN2000 inverters raise alarm ID 61440 with Minor severity, named Flash Fault or Faulty Monitoring Unit depending on model.
tbl=59.r4 h=b125f4aca843tbl=59.r5 h=46367c2285fctbl=43.r6 h=8be6c57c93bctbl=59 h=141ea9cae244review note: support check: partial - Alarm 61440 Minor with names Flash Fault/Faulty Monitoring Unit is stated, but the passages never say it presents as an 'internal memory error' symptom, and the model dependence is not stated.
mitigated_byc5 verified · fact Monitoring board replacement
tbl=59.r4 h=b125f4aca843tbl=59.r5 h=46367c2285fctbl=43.r6 h=8be6c57c93bctbl=59 h=141ea9cae244verified by: review-workflowverified on: 2026-10-23
c6 verified · fact Monitoring device replacement
Applies when the monitoring board is built into the monitoring device.
tbl=59.r4 h=b125f4aca843tbl=43.r6 h=8be6c57c93bcverified by: review-workflowverified on: 2026-10-23
c7 verified · fact Contact manufacturer service
Contact Huawei technical support if the fault is still there after the restart.
tbl=59.r5 h=46367c2285fctbl=59 h=141ea9cae244verified by: review-workflowverified on: 2026-10-23
indicates c4indicates c4indicates c4