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Troubleshooting and Maintenance
Error Code Fault Diagnosis and Solution
BMS_HVB_OVER_FAULT
Total voltage
overvoltage fault
Total voltage overvoltage:
• Tap "Power Off" on the inverter
screen until the fault is rectified.
• Contact the after-sales personnel of
our company.
BMS_HVB_LOW_FAULT
Total voltage
undervoltage fault
Total voltage undervoltage:
• Make sure that the inverter is
connected to the grid and that
there is successful communication
between the battery and inverter to
ensure that the battery is charged.
• Contact the after-sales personnel of
our company.
BMS_TEMP_OVER_FAULT
High temperature
of the BMS
The temperature of the BMS is too
high:
• Cool down the BMS to normal
temperature, and then restart it.
• Contact the after-sales personnel of
our company.
BMS_TEMP_LOW_FAULT
Low temperature
of the BMS
The temperature of the BMS is too low:
• Warm up the BMS to normal
temperature, and then restart it.
• Contact the after-sales personnel of
our company.
BMS_SELF_CHECK_FAULT
Self-test fault of
the BMS
Self-test fault of the BMS:
• Restart the BMS.
• Contact the after-sales personnel of
our company.
BMS_PRECHG_FAIL_
FAULT
BMS precharge
failure fault
External short circuit of the BMS:
• Check the external connection and
restart the BMS.
• Contact the after-sales personnel of
our company.
BMS_TEMP_SAMPLE_
FAULT
Temperature
sampling anomaly
Temperature sampling anomaly:
• Restart the BMS.
• Contact the after-sales personnel of
our company.
BMS_SYS_FAULT
Slave control of
abnormal current
exists in the
system
Slave control of abnormal current
exists in the system:
• Restart the BMS.
• Contact the after-sales personnel of
our company.