EG4 EG4-LL Руководство пользователя - Страница 19
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Common Faults and Solutions
Number
1
Inverter communication failure
2
3
4
Battery can't be charged fully
5
6
The battery output voltage is
7
ALM LED flashes 20 times w/
8
ALM LED flashes 20 times w/
9
ALM LED flashes 20 times w/
10
Different SOC value of batteries
11
Low voltage protection w/ no
12
Deep discharged w/ "ON" LED
Fault
No DC output
Power supply unstable
ALM LED always on
unstable
SOC1 LED on
SOC2 LED on
SOC 3/4 LED on
in parallel operation
LED on
on
Analysis
Check communication port
connection, and battery ID
setting
Open breaker, or battery
voltage is too low
Battery capacity is not at full
power
DC output voltage is below
the minimum charge voltage
Short circuit
Battery management system
does not operate normally
Unbalanced voltage within a
cell
Unbalanced temperature
BMS damaged
No issue
BMS is in low voltage
protection, and is in sleep
mode
The battery has been
discharged too low, and
voltage is too low to start
BMS
18
Solution
Refer 8.4.2
Check battery breaker, or
charge the battery
Check for proper battery
cable connection, or
t
replacemen
Check the charging settings
on the inverter to ensure
they match battery
requirements
Disconnect the power cable
and check all cables
Press the reset button to
reset the battery, then reboot
the system
Examine/balance the cell
Replace temperature sensor
cable
Replace BMS
Deep discharge the battery
bank (<20% SOC), then
charge battery bank fully
Follow the below steps to
reboot the module
Open the top cover and
charge the battery pack
above 40V to reboot