Other Common Faults and Solutions
Inverter communication failure
Check communication port
connection, and battery ID
setting.
Input proper “host” battery DIP
switch address, and power
cycle the battery.
Open breaker, or battery
voltage is too low.
Check battery breaker or
charge the battery.
Battery capacity is not at full
power.
Check for proper battery cable
connection.
Battery can’t be charged fully
DC output voltage is below the
minimum charge voltage.
Check the charging settings on
the inverter to ensure they
match battery requirements.
Disconnect the power cable and
check all cables.
The battery output voltage is
unstable.
Battery management system
does not operate normally.
Press the reset button to reset
the battery, then reboot the
system.
ALM LED flashes 20 times with
SOC1 LED on.
Unbalanced voltage within a
cell
Deep discharge the battery
bank (<20% SOC), then charge
battery bank fully.
ALM LED flashes 20 times with
SOC2 LED on.
ALM LED flashes 20 times with
SOC 3/4 LED on.
Different SOC value of batteries
in parallel operation.
Deep discharge the battery
bank (<20% SOC), then charge
battery bank fully.
Low voltage protection with no
LED on
BMS is in low voltage
protection, and is in sleep mode
Deeply discharged with “RUN”
LED on
The battery voltage is too low to
start BMS.
HELPFUL TIP: The “Historical Record” tab can indicate what occurred with the module
before entering a warning or protection state. It is recommended to export this data into a text
(.txt) file to provide to the distributor for any additional troubleshooting assistance.
If any of the warnings or faults from both tables persist, please contact the distributor for
additional troubleshooting steps.
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