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Alpha ESS Co., Ltd.
Page 68 of 75
Your Smart Energy
10.2.3
Battery Error Description
LED Indictor
Error Code
LED dis-
play
Description
Troubleshooting
Red LEDs flash
once every 1S.
Error 01
Hardware error
Wait for automated recovery.
If the problem is not
resolved, call for service.
Error 02
Hardware error
Error 03
Hardware error
Error 05
Hardware error
Error 06
Circuit breaker
open
Switch on circuit breaker after
powering off the battery.
Error 08
LMU disconnect
(slave)
Reconnect the BMS
communication cable.
Error 09
SN missing
Call for service.
Error 10
LMU disconnect
(master)
Reconnect the BMS
communication cable.
Error 11
Software version
inconsistent
Call for service.
Error 12
Multi master
Restart all batteries.
Error 13
MOS
overtemperature
Power off the battery and
power on the battery after 30
minutes.
Error 14
Insulation fault
Restart battery and in case the
problem is not resolved, call
for service.
Error 15
Total voltage
fault
Restart battery and in case the
problem is not resolved, call for
service.
NOTE:
In the case of work mode, if the protection code 09 appears, please press the power
button 5 times within 10 seconds, the BMS will be forced to turn on the MOSFET of dis-
charge so that the inverter can detect the battery open voltage and charge the battery.