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Battery
overtemperature
protection
The battery temperature is too
high.
Take measures to reduce the
ambient temperature.
Battery
overvoltage
protection
The voltage of a single cell
is too high.
The battery string is
abnormal.
The battery management
module is abnormal.
The battery voltage
exceeds the overvoltage
protection threshold.
Check the UPS status.
Check the lithium battery
cabinet status.
Check whether the battery
voltage is normal.
Replace the battery
management module.
Replace the battery
management module.
Software package
not exist
The package of the power unit
or module does not exist in the
monitoring system.
Upload the software packages
of the power unit or module
and MDU, and activate all the
packages.
The state of health of a battery
is abnormal.
Fully charge the batteries,
and perform a capacity test.
Replace the abnormal
battery.
Cabinet quantity
mismatch
The configured number of
battery cabinets does not
match the actual number.
Set the number of battery
cabinets to be the same as
the actual number.
Check the parallel cable
connection.
The BCB switch is turned
off.
The BCB switch status
signal cable is abnormal.
Turn on the BCB switch.
Check whether the BCB
switch status signal cable is
properly connected.
The sampling connecter is
not firmly connected.
The board sampling circuit
of the battery module is
faulty.
The battery module is
faulty.
Replace the faulty battery
module.
The battery temperature is too
low.
Take measures to increase the
ambient temperature.
The voltage of a single cell
Check the mains, and charge